Daily Weight Increase Research Articles

The effect of Phytostimplus on blood biochemical parameters, average daily growth and disease resistance of calves

The purpose of the research is to study the effect of the Phytostimplus supplement on the clinical and physiological status, average daily growth and viability of calves during the dairy growing period. The phytobiotic contained an extract from three herbs (safflower rhaponticum, crowned sickle, viscose meadowsweet) and lactic acid microorganisms dried lyophilically. The work was carried out in 2023. The experiment involved calves of the Holstein breed, starting at the age of 2 days. Experimental and control groups of 10 heads each were formed. In the control group, the calves were kept on a regular diet, without the use of any drugs. The additive was soldered to calves of the experimental group at a dose of 30.0 ml / head per day after preliminary dilution in water. The duration of the experiment was 2 months. Thirty days after the start of the experiment, the albumin in the calves of the experimental and control groups exceeded the reference values by 17.8–18.1 %. In both groups of calves, α-globulin decreased in comparison with the physiological norm by 3.3–4.1 %, γ-globulin – by 6.0–6.2 %. A decrease of β-globulin by 5.5 % was observed in animals in the experiment. The rest of the studied blood parameters of calves (urea, zinc sulfate test) in both groups were within the normal range and did not differ significantly. By the end of the experiments, the total protein in the calves in the experiment exceeded the indicator in the control by 30 %, albumin – by 8.1 %, γ-globulin – by 4.9 %, while there was a decrease in α-globulin by 8.6 %, β-globulin – by 4.4 %. The studied parameters did not exceed the limits of the physiological norm. The duration of treatment of enteritis in calves in the experimental groups turned out to be less than in the control with Phytostimplus by 0.7±0.2 days. The safety of animals by the end of the experiments was 100 %. The average daily increase in live weight of calves after the use of phytobiotics for 60 days exceeded that in the control by 4.9 %.

The Potential of Three Vetch Species in Enhancing Feed Intake and Body Weight Gain of Growing Male Lambs

An experiment was intended to evaluate the potential of three vetch species in enhancing feed intake and body weight gain of growing male lambs and to investigate the difference among these three vetch species regarding their effect of supplementation on feed utilization and growth performance of growing male lambs. Twenty-four young male Arsi-Bale lambs of similar body weight were assigned to one of the four treatments in a randomized complete block design. The dietary treatments were 350 g of hay each of <i>Vicia sativa,</i> <i>Vicia Villosa,</i> and <i>Vicia narbonensis</i> for T2, T3, and T4, and ad libitum fodder oat hay alone (T1). Weight measurements of the lambs were made every ten days during the ninety-day feeding trial. Compared to T1 and T3, T2's total dry matter intake (1121.4 g/day) was substantially (P<0.05) greater. Lambs fed T2 diets showed significantly higher (P<0.001) crude protein intake (153.3 g/day) and average daily body weight increase (152.0 g/day). In conclusion, supplementation with Vicia sativa (T2) resulted in the highest feed intake and growth performance of lambs across all treatments. As a result, efforts should be undertaken to introduce and expand the production of this forage within the farming system.

The Effect of Feeding Native Grass, Jackfruit Leaves and Leguminosa on Daily Weight Increase and Body Sizes of Goats

The use of foliage and legumes in goat diet is essential to serve protein sources for maintenance and productivity. This study aimed to evaluate the effect of providing native grass, jackfruit leaves (Artocarpus heterophyllus), and different legumes such as Leucaena leucocephala and Asystasia gangetica (L.) T. Anderson on average daily gain (ADG) and weekly increased body measurements) of four female Kacang goats (5-7 months old; average body weight 6.98?± 1.44 kg) kept in individual pens (1 m x 1.2 m × 1.2m (length x width x height) with a soil base. A 4 x 4 latin square design with four treatments: T0 (100% natural grass), T1 (100% lamtoro leaves), T2 (100% jackfruit leaves), and T3 (100% spinach) were used. The data obtained were analyzed using analysis of variance. The results showed that feeding goats with different type of forages had a significant effect (P<0.05) on ADG, in which the goats fed jackfruit leaves showed the highest ADG value (142.85 ± 15.43 gr/head/day) (p<0.05). Meanwhile, the ADG of goats fed native grass, L. leucocephala, and A. gangetica leaves were not significantly different (P>0.05). The results also showed that different forages had no significant effect (P>0.05) on the weekly increase in body size measurements, including body length, shoulder height and chest girth. It can be concluded that giving jackfruit leaves can increase the ADG of Kacang goats. The use of jackfruit leaves solely can be recommended to increase the growth of goats.

EFFICIENCY OF FEED ADDITIVE EIMERIX ® FOR NATURAL INFECTION OF BROILER CHICKENS WITH EIMERIA SPP.

The article presents the results of the study of the effectiveness of the feed additive EIMERIX® (powder for oral use, granulated), produced by JSC Biopharm (Ukraine), the active pharmaceutical ingredient of which is the polyester ionophore antibiotic monensin, when used for broiler chickens naturally infected with coccidia of the genus Eimeria. The study was conducted on 17-day-old broiler chickens with clinical signs of coccidiosis. E. tenella and E. maxima were identified from faeces samples of sick broiler chickens. For three weeks (21 days), the sick bird the feed supplement EIMERIX® was added in feed at a dose of 0.5 g per 1 kg of feed, or 100 mg of sodium monensin per 1 kg of feed (experimental group). The control group consisted of broiler chickens suffering from coccidiosis, which were not given the supplement or any other anticoccidial drugs. The main criteria for demonstrating the estimation of the feed additive EIMERIX® were: the number of Eimeria oocysts in feces; mortality and morbidity of poultry associated with coccidiosis. Additional indicators of the effectiveness of the feed additive were: average live weight; average daily increase in live weight of poultry; average daily feed consumption, the ratio of the amount of feed consumed to growth; data of bird health monitoring during the experiment. On the 21st day of the experiment, the excretion of Eimeria oocysts in the feces of broiler chickens with coccidiosis practically stopped (<100 oocysts/g of feces), what was confirmed by the absence of clinical signs of coccidiosis in the birds. Addition of EIMERIX® additive in feed contributed for the reduction of morbidity and mortality among sick birds. More live weight gains and lower feed conversion ratios were observed in Eimeria disease birds treated with a feed additive versus untreated birds. The results of the study showed that the use of EIMERIX® feed additive for broiler chickens with coccidiosis, in the recommended by the manufacturer dosage, causes a decrease of the eimeria infection degree of the bird, reduces its morbidity and mortality, and also contributes to an increase of average daily gains and improvement of feed conversion.

The influence of a phytobiotic with <i>F. ulmaria</i> extract and lactobacilli on the clinical and physiological status of calves

Purpose of the research: to study the effect of a phytobiotic additive on some clinical and physiological parameters of the body of calves during the dairy period (biochemical and morphological blood parameters, live weight gain and disease resistance). The subject of the study was a phytobiotic with the code name Fitostim, which is based on an extract of meadow-sweet (Filipendula ulmaria (L.) Maxim.) and a lyophilized culture of lactic acid microorganisms. The experiment used Holstein calves, divided into experimental (Fitostim + traditional diet) and control (traditional diet) groups of 12 animals each. Starting from 4 days of age, calves in the experimental group were administered Fitostim daily, individually, orally for 30 days at a dose of 3 grams per head, after dilution in milk. Blood tests for morphological (erythrocytes, leukocytes, hemoglobin, leukoformula) and biochemical parameters (IgG, total protein, albumin, ALT, AST, creatinine) were carried out on the 10th and 30th days of the experiment. By the end of the experiment, in the experimental group of calves, compared with the control, there was an increase in ALT (8.0±0.01 units/l) by 19.4 %, total protein (51.4±0.07 g/l) by 14.7 %, albumin (44.0±0.01 g/l) by 15.4 %, creatinine (41.5±0.001 µmol/l) by 10.9 %, immunoglobulin G (5.9±0.01g /l) by 18 %, leukocytes (7.1±0.02×109/l) by 31 %. The studied morphological blood parameters (leukocytes, erythrocytes, hemoglobin, leukoformula) did not go beyond the reference values. Recovery from enteritis in calves in the experimental group occurred earlier by 1.8±0.3 days than in calves in the control group. Safety of calves is 100 %. The average daily increase in body weight in calves in the experimental group was 0.811±0.12 kg, which was 17.1 % higher than the result in the control.

The first results of the use of the gene pool of the Kalmyk breed on the brown stock of Brown Swiss cattle

The given investigation is devoted to a comparative assessment of the growth, meat productivity and efficiency of beef production by bulls of different genotypes. It was formed 3 groups of bull calves, 15 heads in eachon the 2nd-3rd days after birth: group firstis brown Swiss calves, the second is Kalmyk breed, the third is crossbreeds obtained from crossing Brown Swiss cows and Kalmyk bulls. It has been established that to the age of 18 months, the advantage of Kalmyk bulls and their crossbreeds in terms of live weight over purebred animals of the Brown Swiss breed averaged 16.3-28.2 kg (P>0.999). According to the average daily increase in live weight for the entire production cycle, animals of the Kalmyk breed favorably differed among the analyzed genotypes of young animals, the superiority of which over their peers of different origin varied within 29-61 g (P> 0.999). The difference between bulls of the Brown Swiss breed and crossbreds was 32 g (P>0.999) in favor of the latter. From bull-calves of the Kalmyk breed and their crosses, in contrast to those of the Brown Swiss breed, heavier carcasses were obtained - by 24.8 (P> 0.99) and 14.9 (P> 0.99) kg, slaughter yield is by 2.4 (P>0.99) and 1.4 abs.%, respectively. Representatives of the Kalmyk breed and crossbred peers differed in the highest yield of pulp, whose superiority over bulls of the improved breed was 12.0 (P>0.99) and 7.5 (P>0.99) kg, respectively. A higher level of profitability at the level of 34.6-37.9% was characterized by the descendants of bulls of the Kalmyk breed versus 26.7% in the group of brown Swiss breed.

Growth intensity of young rabbits on the background of use of complete mixed fodders

The development of each individual is influenced by many factors: from genetic to environmental conditions. Therefore, the goal of our research was to establish the characteristics of the growth rate of rabbits from birth to sale when using complete feed in a controlled microclimate. Research was carried out on complex crossbreeds in the rabbit breeding laboratory of the Belgorod State Agrarian University. At birth, the average live weight is 53±2 g. In the first three days, the rabbits were fed colostrum and their average daily gain was 8±1 g, when switching to milk in the next 4 days it increased to 13±1 g, and in the next week - 19±2 g. In the third week of life, the rabbits were introduced to the feed; during this period, the average daily gain did not increase significantly and amounted to 21±3 g. From the next week, the feed began to prevail in the diet of the young animals, and their average daily gain increased to 39±4 g, and the live weight reached 796±43 g. Starting from the 30th day, the rabbits were exposed to stress factors such as branding and weaning. At the same time, the average daily increase in live weight continued to increase, reaching a maximum in the interval between 50 and 60 days with values of 40-42 g, regardless of the method of preventing eimeriosis. It is worth noting that live weight when using a coccidiostat based on essential oils (Ent-Oil Eimecon Dry) is higher than when using a broad-spectrum antibiotic effective against eimeria (Cycocin) and amounted to 3078±38 and 3305±62 g, respectively (p < 0.01).

EFFECT OF INCORPORATING FERMENTED COFFEE HUSKS INTO SWINE DIETS ON PRODUCTION PERFORMANCE AND FEED COST YIELDS

Pig farming is an important component of the livestock sector at a global scale since pork is the most widely produced and consumed meat in the world. This study aimed to evaluate the effects of diets containing different levels of fermented coffee husk flour on the productive performance of pigs and economic viability in pig farming. Coffee husks were incorporated with probiotics based on Moringaoleifera Lam leaf extracts. Five gilts between 3 to 5 months of age, with an initial average weight of around 13.38 kg, were used. The experiment was conducted using a Latin Square Design, with 5 treatments and 5 replications. The treatments were a control treatment (T0) without coffee husks in the diet; and treatments T1, T2, T3, and T4 with coffee husks at 4%, 6%, 8%, and 10% in the diet, respectively. The statistical analysis showed that T1, which contained 4% fermented coffee husks in the diet, was the most efficient diet formulation with respect to the rest of the treatments. The animals that received T1 showed a high increase in average daily weight, with an average value of 867.70 g; and a better feed conversion rate, requiring only 3.57 kg to produce one kilogram of meat. The results of a descriptive yield analysis on feed cost showed that T1 could generate a higher yield of about $6.04 per kilogram of meat sold in the local market compared to the other treatments. Therefore, it is concluded that the incorporation of fermented coffee husks at 4% into pig diets can improve pig productive performance and reduce feed costs.

ODONTOPLASTIA NO DESEMPENHO E NA CONDIÇÃO CORPORAL DE EQUINOS ATLETAS: relato de caso

Performance in physical activity is fundamental for competitive horses, and dental treatment can play a crucial role in this process, influencing comfort and execution of exercises in a more attentive way to training, in addition to generating animal well- being. Research into the impact of dental treatment on the physical performance of competition horses is limited, but it is known that dental problems can negatively affect horses' ability to feed adequately, affecting their energy, stamina and ability to maintain optimal physical condition. The objective of this study was to evaluate the influence of odontoplasty on the athletic performance and body score condition of competition horses in barrel racing. We observed the sporting development of three Quarter Horses, aged between 3 and 5 years old, on a diet based on hay, feed and minerals, before and after dental treatment, evaluating their weight gain and sporting performance during training. for the drum test. Comparisons were made of performance improvement, how much on average the animals improved (how much less time the animals took the tests), how much on average they gained in weight. Carrying out dental treatment for competition horses resulted in a reduction in average race time of around 1.42” and an increase in average daily weight of 49.33 g/day per animal. It is concluded that horses undergoing an odontoplasty procedure, competing in the three-barrel modality, present better athletic performance and increased body score condition, reducing track times and maintaining an adequate body and nutritional score for competitions as they are able to eat better. and maintain good body balance. It was also noted the need for more studies that can evaluate the influence of dental care on the sporting performance of athletic horses.

Exploring the External Environmental Drivers of Honey Bee Colony Development

Honey bees play an important role in agricultural landscapes by providing pollination services. Throughout the season, colonies increase their population and collect resources from the available flowering plants. Besides internal mechanisms, such as the amount of brood or the availability of bees to perform foraging flights, colonies are also influenced by the climate and the surrounding landscape. Therefore, exposure to different environmental contexts leads to distinct development rates. In this study, we show how colonies develop under three different landscape contexts and explore which external variables (mostly climate and resources availability) influence the colonies’ development. We installed three apiaries in three different landscapes in the Iberian Peninsula, with temporal and spatial variation in climatic conditions and resource availability. The availability of resources and their use, as well as the development of colonies throughout the season, were thoroughly investigated. These data were used to take the first step into creating an ecologically relevant landscape by calculating the number of available resources in the landscape at different points in time, based on plants’ beekeeping interest as well as nectar and production. Furthermore, climatic variables were transformed into the amount of available foraging minutes that bees had to collect resources, and a theoretical threshold of optimal vs. sub-optimal conditions was also explored. Interestingly, the main drivers of colony development (measured by daily weight increase) were not the same in the tested apiaries, evidencing how colonies are indeed intrinsically connected with the surrounding environmental scenario. Therefore, results from field testing are extremely context-dependent and should be interpreted with caution when being extrapolated to other environmental scenarios.

EFFICIENCY OF FEED ADDITIVE NIKAMAX® FOR NATURAL INFECTION OF BROILER CHICKENS WITH EIMERIA SPP.

The article presents the results of the study of the effectiveness of the combined feed additive NIKAMAX® (powder for oral use), produced by JSC Biopharm (Ukraine), the active pharmaceutical ingredients of which are the polyester ionophore antibiotic maduramycin and the synthetic compound nicarbazine, in the treatment of coccidiosis in broilers naturally infected with coccidia genus Eimeria (E. tenella, E. maxima and E. acervulina).
 The main criteria for demonstrating the effectiveness of the feed additive NIKAMAX® were: the number of Eimeria oocysts in feces; assessment of intestinal damage; poultry mortality and morbidity associated with coccidiosis. Additional indicators of the effectiveness of the feed supplement were: average live weight; average daily increase in live weight of poultry; average daily feed consumption, the ratio of the amount of feed consumed to growth; data of bird health monitoring during the experiment.
 The results of the study showed that the feed additive NIKAMAX® when added to feed at a dose of 0.5 g per 1 kg of feed, or 3.75 mg of maduramycin ammonium and 40 g of nicarbazin per 1 kg of feed, causes a decrease in the degree of infestation of broilers with coccidiosis, reduces damage of the intestine of a sick poultry, reduces its mortality and morbidity associated with coccidiosis.
 The combination of nicarbazine and maduramycin, what are the active ingredients of the feed additive NIKAMAX®, contributed to an increase in the growth of broiler chickens and a decrease in the feed conversion ratio in the group of birds to which the additive was added to the compound feed, compared to the infected birds to which it was not administered.
 A general assessment of the main and additional efficiency indicators obtained in the study of natural infection of broiler chickens with Eimeria spp. shows that the feed additive NIKAMAX® is an effective coccidiostatic means of prevention and treatment of eimeriosis in broiler chickens.

Hygienic assessment of the probiotic Bioseven influence on the natural resistance of rabbits pre-clinical researches

Rabbit farming plays an important role in the increase of livestock products, one of the precocious branches of small animal husbandry. From a rabbit and its offspring, more than 100 kg of meat can be obtained per year. The body of rabbits, as well as other agricultural and rural animals. animals, during life is under the influence of abiotic and biotic factors that cause growth depression, changes in the morphological composition of blood, and immunological indicators. The use of biologically active drugs that increase immunological reactivity, stimulating growth, development and resistance deserve attention. The use of probiotic preparations of young animals in the early stages of breeding normalizes the microflora of the gastrointestinal tract, stimulates the synthesis of immunoglobulin IgA, increases its natural resistance, and activates homeostasis. The aim of the work was to carry out a hygienic assessment of the effect of the probiotic Bioseven on the natural resistance of the rabbit's body. The following methods of observation were used to obtain scientific information: biological, hematological, biochemical studies, statistical. The research was conducted on rabbits of the gray giant breed of both sexes. Healthy animals with the appropriate body weight were used in the experiments. Fluctuations in body weight in the respective groups did not exceed ±10.0%. Animals were kept in groups in cages in compliance with sanitary and hygienic requirements. The use of the new domestic biologically active drug (probiotic) Bioseven as a means of preventive action is substantiated in the research paper. The drug has been proven to have a positive effect on the morphological, biochemical and immunological parameters of the blood of animals, increase the natural resistance and growth intensity of rabbits. During morphological studies, it was established that the level of endogenous intoxication of the body of rabbits of experimental groups and controls during the observation period remained stable and amounted to 17.95-18.33% (experimental) and 18.42±0.55 in control, which indicates the absence of a suppressor effects of the probiotic bioseven on the antioxidant properties of the rabbit body in doses: 0.5-5.0 g/head. The economic efficiency of the use of Bioseven consists of: a reduction in the morbidity of animals, an increase in their preservation, an average daily increase in body weight, and therefore an additional increase of 0.300-1.200 kg (depending on the dose), a reduction in the cost of obtaining a unit of production (by 0.5 %) and a decrease in the cost of livestock products per head during the period of the experiment by 5.0–15.0 UAH. Thus, the hygienic evaluation of the effect of the probiotic Bioseven on the natural resistance of the rabbit's body indicates the absence of a suppressive effect of the drug on the metabolic processes of the body of laboratory animals. Key words: rabbit breeding, suppressive effect, probiotic, toxicological characteristics, biochemical, ecologically harmless, complete, food products, of animal origin, food safety, consumer.

THE INFLUENCE OF THE INTENSITY OF GROWTH OF JERSEY BREED HEIFERS DURING ONTOGENESIS ON THEIR MILK PRODUCTIVITY

Obtaining highly productive animals is possible thanks to the introduction of modern systems for the targeted cultivation of repair young animals. Jersey breed animals are particularly popular among cattle breeders due to their unpretentiousness to the feeding and maintenance system, as well as increased protein and fat content parameters compared to other breeds. The manifestation of individual differences in productive qualities in the cultivation of repair heifers during ontogenesis allows an early determination of the direction of their production use.
 The study of the relationship between the intensity of growth of young animals with the results of the evaluation of the milk productivity of the first heifers following the results of the first completed lactation showed the presence of a positive relationship (r = 0,96) between these two parameters. Thus, the highest milk productivity is observed in cows, which in the period from 0 to 6 months had an average daily increase in live weight at the level of 811–961 g, which is generally consistent with the research of Russian and foreign authors and opens up new prospects for improving the productive and economically useful characteristics of the Jersey cattle population in the North Caucasus.

The effectiveness of feeding choline in a "protected" form in the post-dairy period of calf rearing

The physiological and productive effect of the developed "protected" form of choline in calves' diets after removing them from milk drinking was studied. Heifers analogs by breed, live weight at the age of three months were divided into 2 groups (n = 10), and received rations by group loose housing system. The animals of the experimental group were daily given minigranules of "protected" choline at the rate of 50 mg/ kg of live weight of the active substance mixed with feed for 90 days, with the study of the aftereffect. For 90 days of feeding the supplement, the additional increase in live weight of animals in the control group was 67.1±0.5 kg, in the experimental group – 77.5±1.2 kg, with an average daily increase in live weight of 745.5±0.01g versus 861.1±0.40 g (p ≤0.05), for 30 days of aftereffect, respectively, 733.3±0.03g versus 836.7±0.09 g. The acceleration of the growth of heifers is interconnected with the improvement of the direction of metabolic processes in their body due to the use of an additive. In the blood serum taken at the end of the experiment, there was noted a higher level of total protein – by 6.3 % (p <0.05); albumins by 8.0 % (p <0.05); creatine – by 7.4 % (p <0.05); glucose (by 21.2 %) (p <0.05); triglycerides by 28.0 % (p < 0.05); cholesterol by 10.2 % (p < 0.05); alkaline phosphatase by 7.6 %, at lower urea levels, by 22.8 % (p < 0.05), and bilirubin by 23.8 % (p < 0.05). According to hematological indicators, higher levels of erythrocyte formation were revealed – by 8.0 % (p<0.05); hemoglobin by 5.2 %; hematocrit index (by 19.5 %), with a lower (by 13.4 %) white blood cell level. A positive effect on the immune status of the organism of growing animals was also found, with a positive difference in the bactericidal activity of blood serum by 4.1 %, a higher level of lysozyme (by 50.0 %) (p≤0.05), phagocytic activity by 1.0 absolute%, phagocytic index by 14.5 %, phagocytic number by 17.5 %. The data obtained prove the relevance of giving choline in “protected” form to growing ruminants.

Sazer-Fredin index – an effective method of assessing young pigs for feeding and meat qualities

The purpose of the work was to investigate the fattening and meat quality of young pigs of different intrabreeddifferentiation according to the Sazer-Fredin index and, based on the obtained data, to calculate the economic efficiencyof the results of the experiment. The research was carried out in the Dnipropetrovsk region and the animalhusbandry laboratory of the State Institution “Institute of Grain Crops of the National Academy of Sciences”. Theassessment of young pigs of the large white breed in terms of fattening and meat qualities was carried out consideringthe following indicators: average daily gain in live weight during the period of control fattening, g; the age of reaching100 kg live weight, days; thickness of fat at the level of 6–7 thoracic vertebrae, mm; length of the cooled carcass,cm; the length of the bacon half of the chilled half-carcass, see. Control fattening of young pigs was carried out infarm conditions, according to M. D. Berezovsky and I. V. Khatka's method (2005). It was established that the youngpigs of the large white breed of the controlled population belong to the elite class by the age of reaching a live weightof 100 kg, the Thickness of the lard at the level of 6–7 thoracic vertebrae, and the length of the chilled carcass.Taking into account the intrabreed differentiation according to the Suzer-Fredin index, it was established that theyoung pigs of experimental group I prevailed over peers of II in terms of the average daily gain of live weight duringthe period of control fattening by 4.23 %, the age of reaching a live weight of 100 kg – 1.83 %, the Thickness of lardby the level of 6–7 thoracic vertebrae – 14.47 mm and the length of the chilled carcass – 0.31 %. The leading indicatorsof the average daily increase in live weight during the period of control fattening and the length of the chilledcarcass and the minimum values of the age of reaching the live weight of 100 kg and the Thickness of lard at thelevel of 6–7 thoracic vertebrae were found in young pigs of group I-b. The criterion for selecting highly productiveanimals according to the Sazer-Fredin index is young pigs with a variability of the specified mathematical modelfrom +0.089 to +0.591 points. The pairwise correlation coefficient between young pigs' fattening and meat qualitiesand the Sazer-Fredin index ranges from -0.413 (tr=2.93) to +0.248 (tr=1.66). The maximum increase in additionalproduction was obtained from young pigs of the first experimental group according to the Sazer-Fredin index(+1.47 %). The value of additional products obtained from young pigs of the specified group provided that the salesprice for 1 kg of live weight of young pigs at the time of the study was UAH 67.4. is + UAH 101.93/head.

Efficiency of feed additive Nikamax® for artificial infection of broiler chickens with Eimeria spp.

Efficiency of feed additive Nikamax® for artificial infection of broiler chickens with Eimeria spp.

Signs of individual development of young pigs and their relationship with fattening and meat qualities under the condition of industrial technology of their cultivation

The purpose of this work was to investigate the indicators of individual development of young pigs and their relationship with fattening and meat qualities under the condition of industrial technology of their cultivation, as well as to calculate the economic efficiency of the research results. The experimental part of the work was carried out at Agroprime Holding LLC of the Odesa region, the laboratory of innovative technologies, and experimental livestock facilities of the Institute of Pig Breeding and APV of the National Academy of Sciences. The assessment of animals according to indicators of individual development, fattening, and meat qualities was carried out taking into account the following characteristics: live weight at the time of birth, at 4 and 6 months of age (kg), average daily increase in live weight during the period of control fattening (g); age of reaching live weight of 100 kg, days, length of chilled carcass (cm); length of the bacon half of the cooled carcass (cm); fat thickness at the level of 6–7 thoracic vertebrae (mm). A comprehensive evaluation of young pigs according to individual development indicators was carried out using the index “intensity of formation” and “uniformity of growth”. Biometric processing of research results and calculation of the economic efficiency of research results were carried out according to generally accepted methods. It was established that the young pigs of the 1st experimental group (intrabreed differentiation according to the “formation intensity” index (Δt = 0.9354–1.0871) outperformed the peers of the 3rd experimental group (Δt = 0.5737–0.7077) in terms of average daily live weight gain on 37.6 g (td = 2.87; P < 0.01), age of reaching 100 kg live weight – 5.6 days (td = 3.35; P < 0.01), Tyler B. index – 3.03 points (td = 0.73; P > 0.05). The maximum length of the chilled carcass (97.0 cm) and the minimum thickness of lard at the level of 6–7 thoracic vertebrae (20.5 mm) were found in animals of the III experimental group. The difference between the animals of the experimental groups (intrabreed differentiation according to the “evenness of growth” index) in terms of live weight at birth, at 2 and 4 months of age, average daily live weight gain, age at which live weight is 100 kg, fat thickness at the level of 6–7 thoracic vertebrae and the length of the chilled carcass is 7.20 %. The number of reliable correlations between indicators of live weight at the time of birth, at the age of 2 and 4 months, fattening and meat qualities, the index “intensity of formation” (Δt), “growth intensity” index and Tyler B. index is 71.42 %, which indicates the effectiveness of their use in selection and breeding work. The use of young pigs with the index “intensity of formation” Δt = 0.9354–1.0871 and the index “intensity of growth” Ig = 0.0143–0.0185 provides additional production at the level of +2.65 – +2.20 %, respectively.

Triazoline compounds influence on the meat productivity of turkey carcasses

The need to find effective means to improve the quality and production of meat products from poultry farming determines the relevance of the study. The introduction of drugs into the diet can increase the safety of livestock and improve the quality characteristics of poultry meat. The research aims to evaluate the impact of new 1,2,4-triazole derivatives on some blood parameters, as well as meat and slaughter qualities of poultry. The study was conducted between 2022 and 2023 at Odesa State Agrarian University. The trial was conducted to study the effect of new triazoline derivatives GKPF-109 at a dose of 0.5 ml/bird per day on turkey performance and meat quality. The experiment was conducted on Big-6 turkeys aged 1-105 days. The following research methods were used: morphological and biochemical, organoleptic, physicochemical, and statistical. The effects of triazoline derivatives GKPF-109 on organoleptic (appearance, smell, consistency, fat condition, broth quality during meat cooking) and physicochemical studies of turkey meat for microbiological parameters were analysed and investigated following DSTU 3143:2013. The results showed that there was an increase in average daily weight by 13.1%, slaughter yield of gutted carcasses by 12.4%, semi-gutted carcasses by 12.3% and livestock preservation by 4%. An increase in the nutritional value of meat was noted due to an increase in muscle tissue protein by 7.5%, fat by 8.3%, and energy value by 4.8%. The organoleptic, bacteriological, and physicochemical parameters of turkey meat when using triazoline derivatives GKPF-109 in the diet met the requirements of DSTU 3143:2013. It was concluded that the addition of triazoline GKPF-109 derivatives to drinking water enhances haemopoiesis and has antiinflammatory and hepatoprotective effects. The assessment of the quality of broiler turkey meat and broth at the end of the experiment does not allow to assert a decrease in their aroma and taste, which indicates the absence of a negative effect of triazoline derivatives GKPF-109 and methods of their application on the organoleptic characteristics of meat, which should be considered when keeping turkeys

Effect of Marjoram Origanum majorana L. Extract on Growth Performance and Some Haematological Parameters of Common Carp Cyprinus carpio L.

The current study examines the effects of different levels of marjoram Origanum majorana extract (0, 0.5, 1.0, and 1.5 %) on growth performance and haematological parameters in diets of common carp Cyprinus carpio. Four units of the Recirculating Aquaculture System (RAS) were used. Each unit had three plastic tanks (30×30×60 cm), representing four treatments with three replicates, each tank containing ten fish with an average weight of 16.31 + 0.02g - 16.48 + 0.10. Fingerlings were fed at a rate of 3% of the total fish weight. All diets contained an average of 33.89 ± 0.067 % crude protein and about 20.32±0.16 (kJ/g) of gross energy. Fish are fed twice daily, six days a week. The study lasted eight weeks (56 days) during November and December 2021. According to our findings, a group of fish fed 1.5% marjoram extract had the highest rate of final body weight, daily weight increase, relative growth rate, specific growth rate, food conversion ratio, and feed conversion efficiency. The 1.5 % marjoram extract treatment had the highest rate of total protein +5.68 0.84 g/dl, albumin +4.48 0.48 g/dl, globulin +1.17 0.54 g/dl and 3.82 + 0.51% albumin/ globulin. Based on the results, it can be concluded that the use of 1.5 % O. majorana extract was best for growth, and blood profile. The results suggest that the inclusion of O. majorana can improve the nutrient efficiency, growth performance, and haematological parameter of C. carpio fingerlings without negative effects on the fish.

Hranidbena i mesna svojstva mladih svinja različitog intenziteta formiranja u ranoj ontogenezi i unutarpasminske diferencijacije prema genu za melanokortin 4 (Mc4r) receptor

The aim of this study was to investigate young pig fattening and meat quality due to the varying formation intensities in early on- togenesis and two genotypes based on the mel- anocortin receptor 4 (Mc4r) gene. To calculate the correlations between traits and the econom- ic efficiency of using animals of experimental groups in industrial complex conditions, the assessment of animals for fattening and meat quality examined the following characteris- tics: average daily live weight gain during the control fattening period in grams; age of reaching 100 kg live weight in days, chilled car- cass length in centimetres; length of the bacon half of the cooled carcass in centimetres; lard thickness at the thoracic vertebrae T6-T7 in millimetres. Further, the biometric processing of research results and calculation of the eco- nomic efficiency was performed. Young pigs of the controlled population met the requirements of the 1st class and the elite class for fattening and meat qualities. In examining the interbreed differentiation of large white breed animals, the melanocortin 4 receptor (Mc4r) gene determined that the Mc4rAG genotype outperformed the Mc4r AA genotype for average daily live weight gain, age at live weight of 100 kg, lard thickness at T6-T7, and chilled carcass length by an average of 4.50%. The difference between groups for the Tyler B's index was 11.82 points, and according to the average daily increase in live weight, the disparity between young pigs of interbreed differentiation according to the formation intensity index was 4.69%, the age of reaching 100 kg live weight was 3.10%, and the chilled carcass length was 1.23%. The num- ber of reliable connections between fattening and meat qualities, and the formation inten- sity and Tyler B indices was 75.0%, indicating their promise for use in selection and breeding work. The maximum increase in additional production was obtained from young pigs of the Mc4r AG genotype (+2.71%) and of group I, in which the formation intensity index ranged from 0.935 to 1.087 points (+2.65%).