Dynamics Of Live Weight Research Articles

GROWTH AND REPRODUCTIVE ABILITY OF HEIFERS AND FIRST-CALF COWS OF THE CREATED SIMМENTAL MEAT BREED

GROWTH AND REPRODUCTIVE ABILITY OF HEIFERS AND FIRST-CALF COWS OF THE CREATED SIMМENTAL MEAT BREED

Dynamics of live weight of young goats of the different origin in the Republic of Tyva

Live weight is one of the most important traits of the economic value of animals. It characterizes the breed and constitutional characteristics of animals, has a high positive correlation with meat, wool, and under hair productivity, and its age dynamics gives an idea of the animal’s precocity. In this regard, the dynamics of live weight of young goats of diff erent origins in the Republic of Tuva have been studied. The research material was young animals (yeanlings and doe kids) of goats of the Tuva population of Soviet wool breed and Tuva rough-woolen goats. The live weight and its gains from birth to 18 months of age have been determined. It has been found that in all the studied age periods, yeanlings and doe kids of Tuva rough-woolen goats had a higher live weight and increased growth rate. At birth, yeanlings surpassed their herdmates of Soviet wool breed by 28,0 %, at the age of 6 months by 27,0, at the age of 12 months by 27,2 and at 18 months of age by 30,1 %. The diff erence in live weight in doe kids was 27,3; 25,1; 20,7; 21,4 %, respectively. The data of live weight gains have showed that all the young goats had the highest growth rate during the milk growing period. The absolute gain in live weight of Tuva rough-woolen yeanlings in this period was higher by 4,8 kg compared to the Soviet woolly yeanlings.

Ecologically clean technologies of young cattle development

The article discusses the effectiveness of calf rearing in lightweight buildings in individual cages and in houses for individual keeping from 3 days of his life to 60 days of age. It has shown the advantage of growing young animals using this technology in comparison with the traditional method for group keeping indoors. This method of calf breeding contributes to maintaining the cultivation of full-fledged repair young animals, and ultimately, increasing the efficiency of animal husbandry. Since all experimental groups had a different content system, the dynamics of live weight in age periods helped to reveal the difference in growth rates and developed animals. The data obtained indicate that the weight during the formulation did not differ much in animals of the control I and II of the experimental groups was 36 kg, respectively, 35.7 and 38 kg. At 3 months of age, it amounted to 83, 87.6 and 90.2 kg, respectively. They exceeded their peers in the control group 7.2 kg or 7.99%, 4.6 kg 4.67%, respectively. The average daily increase in 3 months was 626 g, 692 g, 696 g, respectively.

Feeding and slaughter qualities of young dairy and dairy and beef cattle

Relevance. According to the results of numerous scientific and laboratory studies, both lack of fatness and excessive obesity of livestock reduce the quality of meat and are the result of imperfect technology of growing and fattening animals or a low level of breeding and irrational use of feed.Methods. Scientific and production experiments were carried out in the Tau Samal LTD Company LLP and the Plemzavod Almaty SEC Almaty region. The dynamics of live weight, fattening and slaughter qualities of young dairy and dairy and beef cattle during the periods of growing and fattening were studied.Results. Gobies of experimental groups of different genotypes, which received feed additives in addition to the main diet, in terms of live weight, fattening qualities, growth and development rates, total and average daily gains, morphological and chemical compositions and energy value of meat favorably differed from uniform age counterparts from the control groups.

Динамика живой массы и мясная продуктивность баранчиков разных генотипов

Динамика живой массы и мясная продуктивность баранчиков разных генотипов

Мясная продуктивность чистопородных герефордских бычков белорусской селекции

Биоклиматический потенциал сельскохозяйственных угодий Белоруссии позволяет производить уже в недалекой перспективе до 2,5 млн т говядины. Несколько лет назад в стране был взят курс на выращивание мясных пород крупного рогатого скота. Изучен рост и оценена мясная продуктивность чистопородных герефордских бычков в условиях Витебской области. Определен морфологический состав отдельных естественно-анатомических частей туш бычков. Проведена сравнительная оценка динамики живой массы и среднесуточного прироста чистопородных герефордских бычков до 18-месячного возраста в условиях племенных хозяйств. Убойный выход туши, полученный при контрольном убое бычков, составил 54,8 – 55,1 % с индексом мясности 4,28 – 4,34. На долю мышечной ткани в тушах приходилось в среднем порядка 71,7 – 72,0 %, на кости — 18,7 – 18,9 %. Выход наиболее ценных сортов мяса высшего и I сортов соответственно составил 14,5 – 18,9 и 45,1 – 46,5 % от общего количества мякоти. По данным контрольного убоя у бычков всех групп получили высококачественные нежирные туши массой 190 – 242 кг.

Extract of oats as a modulator of fatty acid composition of geese tissues in the conditions of physiological stress

Feeding natural antioxidant supplements to animals and birds has multiple advantages over traditional synthetic vitamins of the antioxidant group. This study investigated the effect of the Avena satíva extract on the antioxidant status and fatty acid composition of liver tissues, the brain, and skeletal muscles of geese, live weight dynamics, and pterylographic parameters during physiological stress of formation of contour and juvenile feathers. It is confirmed that adding oat extract to the geese diet during physiological stress increases tissue antioxidant activity. It was established that during the formation of contour feathers (day 28), the voltage of the antioxidant system is significantly weakened by the action of the extract due to selective inhibition of the synthesis of unsaturated fatty acids, in particular oleic. The synthesis of palmitic and stearic acids is activated. The oat extract caused the most remarkable changes in liver tissues. The subsequent period of formation of juvenile feathers (49 days) is characterized by equalization of the composition of fatty acids in the control and experimental groups. At the end of the experiment, the mass of the geese of the experimental group increased by 17.9% and their pterylographic parameters improved.

Динамика живой массы и высоты в крестце скота австралийской селекции в условиях Амурской области

Динамика живой массы и высоты в крестце скота австралийской селекции в условиях Амурской области

Locusta migratoria extruded meal in young steers diet: evaluation of growth performance, blood indices and meat traits of Calves Kasakh white-headed breed

ABSTRACT The article presented the data that confirm the efficiency of the extruded Locusta migratoria (ELM) meal used in feeding steers. The experiment was based on collecting locust, feeding steers and calculation of economic efficiency. One hundred steers of Kasakh white-headed breed were equally divided to 2 treatment groups, and fed either a basal ration (BR, Control group), or a ration containing complete feed supplemented with ELM at 10% (Test group). In the population under study, the live weight dynamics was observed, and the physiological state and haematological status were controlled. The steers’ meat productivity and meat quality were studied on the results of the control slaughter. Partial replacement of the feed with locust reduced the feed costs and contributed to an increase in profits per animal in Test group compared to the control animals, as well as in the beef production profitability.

Use of different levels of mixed ligand complex of zinc, manganese and cobalt in feeding highly productive cows in late dry period and its effect on feed intake, their live weight dynamics and postnatal state

Use of different levels of mixed ligand complex of zinc, manganese and cobalt in feeding highly productive cows in late dry period and its effect on feed intake, their live weight dynamics and postnatal state

ОЦЕНКА ЭФФЕКТИВНОСТИ ОРГАНИЗАЦИИ КОРМЛЕНИЯ ЦЫПЛЯТ-БРОЙЛЕРОВ КРОССА ARBOR ACRES В ЖАРКИХ КЛИМАТИЧЕСКИХ УСЛОВИЯХ РЕСПУБЛИКИ ЧАД

The paper presents the results of evaluating the efficiency of feed rations offered to broilers of the Arbor Acres cross, formed taking into account the climatic, geochemical conditions of Central Africa and its native food flora. The study was conducted on the basis of an experimental farm at the University of N’Djamena, the Republic of Chad. In the experiment, the authors used five formulas of feed rations, which are currently used by farms in the Republic of Chad for growing broiler chickens. They mainly contain locally availble ingredients. To increase the resistance of the poultry organism to unfavorable environmental factors, the chickens of the control and experimental groups were given “TETRACOLIVIT” and “AMIN’TOTAL” vitamins. The efficiency of feed rations was evaluated by determining the age dynamics of live weight, average weekly gains in live weight and blood biochemical parameters of broiler chickens of the Arbor Acres cross from 1 to 42 days of life. The formula of feed ration No. 1 proved to be the most effective in terms of the cross productivity.

Влияние баранов-производителей на молочность маток-дочерей карачаевской породы и динамику живой массы их потомства

Влияние баранов-производителей на молочность маток-дочерей карачаевской породы и динамику живой массы их потомства

Influence of fodder "M-Feed” addition in rations on the intensity of growth and meat productivity of chicken- broilers of cross ross-308

The article presents materials on the study of the influence of the biological feed additive “M-Feed” in the rations of broiler chickens on the dynamics of live weight and average daily gains. It is determined that the highest absolute increase in live weight of the experimental bird was observed when using “M-Feed” in the amount of 400 mg per 100 g of feed in the cellular method of cultivation.
 

Live weight dynamics and exterior indexes of jersey breed fed on dry brewers waste

The scientific results of the body weight dynamics, the multiplicity of its increase, the average daily weight gain, the relative growth rate and the exterior indicators are presented. The brewers waste is a high-protein product with a high content of carbohydrates, including fiber.For the research, three groups of Jersey breed were formed on the principle of the analogue group: the first was control, the second and the third – experimental. Their rations were introduced by 15 % and 20 % of dry brewers waste from the total diet, respectively. It was established that the live weight of the experimental cows from the 2nd group was 9.3 times bigger. The live weight of the experimental cows from the 1st and 3rd group increased 9 times. The cows from the 2nd group had the highest average daily weight gain (811.4 g) in the period from 2 to 6 months. It was 3.2 % times more than in the control group and 7.4 % times more than in the 3rd experimental group. The cows from the 2nd experimental group had the highest relative growth rate (85.7 %) in the period from 2 to 6 months which was 2.2 % times more than in the 1st control group and 4.2% times more than in the 3rd experimental group. In the period from 6 to 12 months, the 2nd experimental group had the highest average daily weight gain (671.4 g), which was 2.1 % more than in the 1st control group and 3.5 % more than in the 3rd experimental group. From 6 to 12 months the relative growth rate in all groups was almost the same and ranged from 54.2% – 54.7 %. At the age of 12 months, the 1st control group had greater index (120.4). The 3rd experimental group had 119.6 and the 2nd – 118.6. The 2nd group of the same age had better shooting index than the 1st control group 0.7 % times more and the 3rd group 1.4 % times more. It indicated the better development of the body weight. Key words: dynamics, weight gain, repair heifers, Jersey breed, measurements, indicators.

RESEARCH OF LIVE MASS OF CALF–EMBRYOTRANSLANTANTS

The efficiency of breeding and production processes in dairy cattle breeding are closely linked and limited by the genetic value of animals, their reproduction ratio, and the rate of change of generations. The use transplantation of embryo in the practice of dairy cattle breeding ensures the effective implementation of modern reproductive biotechnology, which will promote the expanded reproduction of the most valuable, tested animal complexes.
 Goal. To study the dynamics of live weight of calves-embryo-transplants and compare them with analogues obtained after artificial insemination, in conditions of farms of different climatic regions of Ukraine.
 Methods. Zotechnical, statistical, analytical. Analytical part of the work was carried out on the retrospective data of zootechnical records in three farms, in the warehouse of which were introduced repair heifers-embryotransplantants. Biotechnological procedures (in vivo) for embryocollection, transplantation of fresh and frozen-thawed embryos were carried out in accordance with well-known techniques. Materials for system analysis were collected during the period of practical activity of the Laboratory of embryo transplantation at PJSC "Poltavapleservis" and in the period after its reorganization. To study the dynamics of the live weight of repair calves-embryo-transplants in three different climatic and technological conditions farms were selected analogue groups of calves of the corresponding age and breed (in the ALLC "Petrodolynske", the comparison was made with Ukrainian red dairy breeds) born after fertilization artificial insemination of heifers.
 Results. It was established that the live weight of newborn calves-embryo-transplants of dairy breeds was lower compared to analogues by 6.8% (with fluctuations of 0.86–5.46 kg). Heifers-embryo-transplants yielded to live weight analogues for the entire period of the survey, but had a higher rate of growth. At 9 months of age, the difference in live weight was 4.7%, but the difference in farms of different climatic regions increased significantly: from 0.96 to 8.72%.
 Conclusions. The tendency of the dependence of the dynamics of the live weight of heifers on the methods of reproduction biotechnology, as well as on the effects of the conditions of retention, is established. Some elements of this trend require further study, in order to optimize the technology of growing a repair stock with high genetic potential.

Динамика живой массы и оплата корма бычками красной степной и красно-пёстрой по-род при выращивании по технологии молочного скотоводства

Динамика живой массы и оплата корма бычками красной степной и красно-пёстрой по-род при выращивании по технологии молочного скотоводства

Live weight and age dynamics in Karakul lambs of Kyzylkum factory type

The article presents data on the studied dynamics of live weight of plant-type lambs of the Kyzylkumtupe from birth to 4 months of age compared to black colored lambs. The data summarized in the table show that there are certain differences in terms of live weight between colors. Moreover, higher rates, although they are statistically unreliable, are observed in black lambs at birth. Such differences in lambs of a semi circular curlicue type are 0.05 kilograms, ribbed type 0.08 kilograms, flat type 0.11 kilograms, over grown type 0.17 kilograms, and a weighted average of 0.09 kilograms. The same trend is observed at 4 months of age. Moreover, higher rates, although they are statistically unreliable, are observed in black lambs at birth. Such differences in lambs of a semi circular curlicue type are 0.05 kilograms, ribbed type 0.08 kilograms, flat type 0.11 kilograms, over grown type 0.17 kilograms, and a weighted average of 0.09 kilograms. The same trend is observed at 4 months of age. However, it should be noted that the slightly low live weight of sura lambs does not say that they are to some extent under developed. The performance of these lambs may well provide them with a sufficiently high vitality and productivity.

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THE EFFECT OF SEASON OF BIRTH ON LIVE WEIGHT HEREFORD STEERS

The aim of the research is to study the influence of different seasons of birth on the productivity of Hereford bulls for the implementation of various technological solutions. The object of the study were Hereford bulls from birth to 16 months of age in LLC «Andrianovsky» of the Republic of Khakassia. By pairing custom-made 100 cows with the bull in 2015-2016 was obtained 53 bull. Of these, 2 groups of 20 bulls were formulated for control cultivation: 1st-animals born from January to April, and 2nd - from October to December. Assessment of the dynamics of live weight of test bulls of both groups shows that the average age of 16 months met the requirements of the elite class. While significant differences between the groups in live weight over the accounting periods was not observed. Bulls of the 1st group had a live weight of 462.9±10.9 kg, the 2nd group-438.6±11.2 kg. the Exception is only the average daily increase from 12 to 16 months. There was a significant superiority of bulls born in the period from January to April (P<0.001). The greatest relative increase was observed in animals of the 1st group aged from birth to 16 months, i. e. for the entire period of cultivation, and bulls of the 2nd group only in the period from 8 to 12 months, when this group, using the potential of pastures, is ahead of the average daily growth of their peers. Season of birth has no significant effect on the ability to achieve Hereford bulls optimal body weight. This proves the possibility of using Hereford animals in the implementation of new promising technological solutions.

Comparative evaluation of the seasonal dynamics of live weight of mares of different genotypes

The article presents the results of a study of the adaptive dynamics of a live weight of native mares Khakass groups Orlov trotter, Russian trotter breed and Russian Heavy Draft. In horse breeding at the year-round grazing horses, the main problem associated with adverse to the body of animals and the longest winter tebenevochnym period. Quality wintering herd horses depends largely on the ability to retain fatness (conditionally resistance) during this difficult period. Applied today assessment of the herd of horses that are on tebenevke by visual inspection, does not allow to identify the start of a sharp loss of body weight, as a result of animals are depleted, which leads to an increase in the number of abortions in mares and waste both young and adult population. Investigations were carried out to study the adaptive dynamics of a live weight of mares in a year-round grazing for timely identification of the onset of critical changes. Degree horses adapt to seasonal rhythms in a year-round grazing animals reflects their annual dynamics of live weight. This indicator is one of the criteria for adaptation to breeding conditions. Comparative seasonal dynamics of the live weight of the mares of different genotypes studied by seasons by the formula AA Motorina [1]. During the year, the mares of different genotypes reacted differently to the drastically changing feed, temperature, physiological, and others. Factors. Hardier mare were Khakass groups. They are less than animals of other genotypes, react to the current level of feeding and management, sharp temperature changes. What does the change of body weight in the autumn-winter period (1.0-1.9 vs. 2.5-3.8%), autumn-spring (against 15,9-17,4 17,0-20,9) and autumn-summer (against 10,4-11,3 10,8-13,0%), indicating that a good adaptation mares Khakass groups to environmental factors.