Kernel Protein Content Research Articles

Soil drought decreases oil synthesis and increases protein synthesis in cottonseed kernel during the flowering and boll formation of cotton

In cotton production, drought is particularly prominent in the flowering and boll formation stage, which significantly affects the cottonseed yield and quality. As the two main storage products in cottonseed kernel, the formation of oil and protein will be affected inescapably under soil drought. Still, the effects of soil drought on the synthesis of cottonseed oil and protein are poorly investigated. To this end, experiments were conducted using two cultivars with contrasting drought tolerance (Dexiamian 1 and Yuzaomian 9110) under three water levels [soil relative water content: control (75 ± 5)%, mild drought (60 ± 5)% and severe drought (45 ± 5)%] from 2017 to 2019. We examined the responses of metabolic activities in cottonseed kernels to drought. Otherwise, 13 CO 2 and 15 N-urea isotope labeling were applied to verify the trend of oil and protein accumulation under soil drought. Results showed that drought decreased cottonseed yield per plant due to the decreases of single-seed weight and cottonseed number. And drought decreased oil content (% dry weight −1 ) and increased protein content (% dry weight −1 ) in cottonseed kernel. According to the findings, drought decreased 13 C content and limited the flow of carbon into oil synthesis pathway; moreover, drought decreased the expression of GhPEPC1 and GhDGAT and activities of phosphoenolpyruvate carboxylase (PEPCase) and diacylglycerol acyltransferase (DGAT), which restrained oil accumulation. Increased protein content under drought was attributed to the increased translocation of plant nitrogen to cottonseed kernel, higher expression of GhGS and GhGOGAT , glutamine synthetase (GS) and glutamate synthase (GOGAT) activities. The Yuzaomian 9110 was more sensitive to drought stress with a higher loss of cottonseed yield and yield components than Dexiamian 1. This study provides insight into the physiological mechanisms of cottonseed oil and protein synthesis under drought and provides a theoretical basis for the utilization of cottonseed oil and protein in the future. Annotation: PEP, phosphoenolpyruvic acid; OAA, oxaloacetic acid; TCA, tricarboxylic acid cycle; Ace-CoA, acetyl coenzyme A; Mal-CoA, Malonyl mono-CoA; G3P, glyceraldehyde 3-phosphate; DAG, diacylglycerol; TAG, triacylglycerol; NADPH, nicotinamide adenine dinucleotide phosphate; PEPCase, Phosphoenolpyruvate carboxylase; ACCase, acetyl-CoA carboxylase; DGAT, diacylglycerol acyltransferase; GS, glutamine synthetase; GOGAT, glutamate synthase; AST, aspartate aminotransferase; ALT, alanine aminotransferase. • Cottonseed yield was significantly decreased under soil drought. • Drought stress significantly restrained 13 C into oil in cottonseed kernels, and enhanced 15 N into kernels. • The oil content was restrained under drought due to lower carbon substrates and enzyme activities. • The increase of nitrogen accumulation and protein synthesis enhanced kernel protein content under drought.

Elevated temperature further inhibited cottonseed protein synthesis under severe drought, but promoted cottonseed protein synthesis under mild drought

Cottonseed as the main by-product of cotton has important industrial utilization value due to the high protein content. Although previous studies found that high temperature or drought can affect cottonseed protein yield, reports on the detailed physiological mechanisms are limited. Moreover, the combination of the two stresses on cottonseed protein synthesis has received little attention. To address this, two cotton cultivars, Sumian 15 and PHY370WR, were exposed to two temperature regimes consisting of ambient temperature and elevated temperature (ambient temperature plus 2.5–2.7 °C), and three water treatments including soil relative water content (SRWC)(75 ± 5)% (optimum soil moisture), SRWC(60 ± 5)% (mild drought) and SRWC(45 ± 5)% (severe drought) were established under each temperature regime. Results showed that individual elevated temperature or drought had quite different effects on protein synthesis. Elevated temperature alone improved the kernel protein content by 3.90–8.53% for both cultivars compared with ambient temperature by increasing the maximum rate of protein accumulation (Vm). Moreover, elevated temperature alone enhanced amino acid synthesis by increasing the activity of glutamine synthetase (GS) and glutamate synthase (GOGAT) and the expression of GhGS and GhGOGAT, which was also good for increasing protein content. Mild drought slightly affected the protein accumulation during cottonseed kernel development. Although the duration of protein rapid accumulation increased, severe drought significantly decreased the Vm and the activity of GS and GOGAT as well as the expression of GhGS and GhGOGAT, finally leading to lower protein content. The interaction effect between the two stresses on protein synthesis was significant, since elevated temperature promoted protein synthesis under mild drought by increasing the Vm, the activity of GS and GOGAT, and the expression of GhGS and GhGOGAT; however, elevated temperature further reduced GS and GOGAT activities and GhGS and GhGOGAT expressions to inhibit protein synthesis under severe drought.

The effect of conjugated linoleic acids on the growth performance, carcase composition and meat quality of fattening rabbits

This experiment was conducted to study the effects of dietary conjugated linoleic acids (CLAs) on the growth performance, fat metabolism, carcase composition and muscle quality of fattening rabbits. A total of 160 Minxinan black rabbits aged 75 days with body weights of 1658.9 ± 188.8 g were randomly divided into 4 groups. They were fed a basic diet supplemented with 0 (control), 0.5%, 1.0%, or 1.5% CLA for 50 days. Dietary CLA reduced the feed intake and serum triglyceride and cholesterol levels. In addition, the crude protein content in rabbit meat was increased, along with the cholesterol and the ether extract levels in the 1.5% depression group. Moreover, the fatty acid composition in rabbit meat was changed, and the content of polyunsaturated fatty acids/monounsaturated fatty acids (PUFAs/MUFAs) increased with the increasing levels of CLA addition. These findings indicate that CLA greatly improved the nutritional value of rabbit meat. From an economic point of view, CLA would normally be included at a concentration of 0.5% in the formulation of feeds for fattening rabbits. HIGHLIGHTS Minxinan black rabbits were fed conjugated linoleic acid (CLA)- supplemented diets for 50 d. CLA decreased the feed intake of experimental rabbits. CLA has significant effects on fat deposition and serum triglyceride and cholesterol levels. CLA greatly improved the nutritional value of rabbit meat. The recommended CLA level is 0.5% for meat rabbits．

Administration of Branched-Chain Amino Acids in the Pre- or Post-Hatch Period Improves the Fiber Characteristics of Pectoralis major Muscle in Turkey Poults Subjected to Early or Delayed Feeding

Poultry meat quality is controlled by muscle fiber properties associated with body weight gain in the immediate pre- or post-hatch period. This study aimed to determine the effect of administration of branched-chain amino acids blend (BCAAb, 3 L-leucine:1 L-isoleucine:2 L-valine) in the pre- or post-hatch period on the growth performance and fiber characteristics of the Pectoralis major (PM) muscle in turkey poults subjected to early or delayed feeding. Newly hatched poults from eggs injected in ovo with BCAAb or received no injection were used in a 21-d study. Poults (n=192) produced without injection of BCAAb received a starter diet supplemented (BCAA) or not (C) with the BCAAb (2 g/kg) immediately or with a delay of 48 h (48BCAA and 48C) after hatching. Poults (n=36) produced with (IOBCAA) in ovo injection of BCAAb (2 mg /ml) received the diet and water immediately. The BCAA and IOBCAA poults had higher body weight than those of the C, 48C, and 48BCAA birds. The body weight of the C poults was higher than those of the 48C and 48BCAA birds. The BCAA poults had higher PM muscle weight than those of the C and 48C poults, while that of the IOBCAA poults was higher than that of the 48C poults. The IOBCAA treatment increased the protein content of the PM muscle meat, compared with the C and 48C treatments. The 48C treatment increased the type IIB fiber area and the type I and type IIA fiber percentages but decreased the type IIB fiber, compared with other treatments. The numbers of type IIB and total fibers in the IOBCAA poults were higher than those of the 48C birds. In conclusion, administering BCAAb in ovo or in a starter diet enhanced early growth performance and improved the fiber characteristics of the PM muscle in turkey poults.

Determination of the Effects on Meat Quality and Fatty Acids of Different Boron Sources in Akkaraman Lambs

In this study, the effects of boron sources such as colemanite, ulexite and etibor-48 supplementation on meat quality and fatty acid composition of Akkaraman lambs weaned at 2.5 months of age were investigated. In the study, 50 single Akkaraman male lambs weaned at the age of 2.5 months were used as animal material. Concentrated containing (17.56% CP and 2600 Kcal/kg ME) and forage (meadow hay) were used as feed material. Colemanite (50.8% B2O2, Ca2B6O11.5H2O), ulexite (43% B2O3, NaCaB5O9.8H2O) and etibor-48 (48%, Na2(OH)2.8H2O) as boron sources were used. The highest protein content of Akkaraman lamb meat was obtained from C and S groups, and the lowest in L group (P

Effects of the Source–Sink Relationship on Walnut Nut Quality at the Scale of the Fruit–Bearing Branch

Fruit quality is known to be regulated by the balance between leaf number/area and fruit number, but less is known about the effects of fruit–bearing branch agronomic traits, particularly for walnuts (Juglans regia L.). We assessed nut quality, physiological and biochemical indexes of leaves, and microstructure of leaves and fruit stalks at various leaf–to–fruit ratios to gain insight into the relationships between branch agronomic traits and nut quality, to identify those traits that made a better contribution to nut quality and to find out the range of the leaf–to–fruit ratio and the object of fruit to be removed for thinning. We found that the top fruit on the fruit stalk had a higher longitudinal diameter and kernel weight than the bottom at the low leaf–to–fruit level, and branches with more pinnate compound leaves had a better capacity for carbohydrate assimilation and transportation to produce better quality fruits. Specifically, with the increasing leaf number, the branch diameter, total leaf area, net photosynthetic rate, chlorophyll content, fruit weight, fruit diameters, and kernel protein content also increased. Moreover, at the microscopic level, the fruit stalk vascular bundle, leaf thickness, palisade mesophyll thickness, and ratios of palisade mesophyll to spongy mesophyll thickness in the leaf also showed the same trend. Therefore, when the ratio of leaf area to the fruit number was less than 181.5 square centimeters per fruit on the branches, reducing the fruit number could improve the size and the crude fat content of fruits. While the ratio was more than 247.8 square centimeters per fruit, the fruit number had no significant effect on fruit quality, but increasing leaf area and branch diameter could improve the fruit size and yield.

EFFECTS OF DIFFERENT BORON APPLICATIONS ON SEED YIELD AND SOME AGRONOMICAL CHARACTERISTICS OF RED LENTIL

This study is to determine the effect of different boron application methods to grain yield and some agricultural properties of Sakar red lentil variety (Lens culinaris Medic.). Study was conducted in 2018-2019 and 2019-2020 growing years in the Boron lack areas of Sanliurfa in Turkey. Experimental design was randomized complete block design with four replicates. Borax and Sakar lentil variety were used as Boron source and plant material, respectively. The methods of applying boron were control (0 kg B da-1), to soil (0.20 kg B da-1), to foliar spraying (when plants have 5-6 leaves 0.05 kg da-1 and have pre-flowering period 0.05 kg da-1) and to soil+foliar application (to soil 0.10 kg B da-1 + to foliar when plants have 5-6 leaves 0.05 kg da-1 and have pre-flowering period 0.05 kg da-1). According to average of two years; the highest grain yield was obtained from soil+foliar aplications (198.57 kg da-1). Also the highest harvest index (33.96%), thousand kernel weight (41.78 g), biological yield (582.96 g/m2) values were seen on soil+foliar applications. Protein content of kernel (33.29 %) and the boron content of kernel (19.09 mg kg-1) values increased with boron applications at the average of two years. The most effective boron application method was determined as soil + foliar boron application but other application methods were more effective than control parcels.

Effect of different processing methods on the proximate composition, mineral content and functional properties of snail (Archachatina marginata) meat

This work aimed at assessing the effect of different processing methods on some nutrients and functional properties of snail meat. Meat samples were divided into seven groups. Six of them were processed and one served as control. The treatments applied were boiling, steaming, roasting, grilling, frying or their combinations. After that, they were characterized for their proximate composition, mineral content and the functional properties of their powders. Boiling for 12 min without water coupled to grilling or roasting; boiling with water or steaming for 24 min coupled to frying increased the protein content of snail meat from 41.65 to 58.62%. All treatments reduced its carbohydrate, sodium, potassium and phosphorus content, but increased its calcium (from 304 to 1892 mg/100 g) and magnesium (from 117.20 to 260.38 mg/100 g). Results of the functional properties are showed that the treatments applied increased the water absorption capacity (WAC), swelling capacity (SC), packed bulk density (PBD), emulsion stability (ES), hausner ratio and pH of snail meat powder. Boiling without water for 12 min coupled to roasting and boiling with water for 12 min coupled to frying decreased its oil absorption capacity (OAC). Frying decreased the loose bulk density (LBD) of the powder and increased its porosity. Snail meat can be a very good ingredient for the preparation and industrial formulation of food products. • The effect of different processing methods on the nutritional and functional properties of snail meat was assessed. • The protein content increased with boiling coupled to grilling/roasting/frying and steaming coupled to frying. • All treatments increased the calcium and magnesium content of the meat. • The functional properties of snail meat powder varied with treatments.

Effect of coconut husk extract on broiler chicken performance, pH and microbial composition of digesta, and small intestine histomorphology

Plants that contain a large number of bioactive substances have been used as alternative phytobi-otic additives. The objectives of the current study were to investigate the efficacy of coconut husk ex-tract on broiler performance, ileal digesta characteristic and small intestine morphology. Two hundred and fifty day-old-chicks (DOC) were randomly placed in five treatment groups with five replicates each, and the chickens were reared until six weeks old. Basal ration was hand mixed to ensure the re-quirements in the starter period and finisher period. Treatments were basal ration only (TCT-), basal ration with 40 ppm tetracycline (TCT+), basal ration with 100 ppm coconut husk extract (T100), basal ration with 400 ppm coconut husk extract (T400) and basal ration with 700 ppm coconut husk extract (T700). The variables included feed intake, live weight gain (LWG), feed to gain ratio (FCR), breast meat quality, pH and microbial composition of digesta and small intestine morphology. Data were sta-tistically analyzed using analysis of variances and comparison test using the Duncan’s multiple range test. The results demonstrated that the feed additives significantly increased feed intake, LWG, breast meat protein content, villi height in the ileum, and the height:crypt depth ratio in the duodenum and ileum, and significantly decreased the abundance of Escherichia coli and Staphylococcus aureus and the pH of digesta (P<0.05). Therefore, coconut husk extract could be applied as a phytobiotic feed ad-ditive for broiler chickens to stimulate the growth of broilers, suppress colonies of harmful bacteria in the small intestine and enhance the improvement of intestinal morphology.

Corn distiller's dried grains with solubles as an alternative ingredient to corn and soybean meal in Pekin duck diets based on its predicted AME and the evaluated standardized ileal digestibility of amino acids

The study aimed to investigate the effects of dietary distillers dried grains with solubles (DDGS) levels on growth performance, carcass characteristic, serum biochemical indexes, meat physical and chemical quality, nutrient utilization, and standardized ileal digestibility of amino acids (SIDAA) in Pekin ducks aged 11 to 42 d based on the evaluation of its SIDAA. A total of 560 eleven-day-old Cherry Valley ducks were randomly allotted to 5 treatments with 7 replicate pens per treatment and 16 ducks per pen based on the average body weight. Six isonitrogenous and isocaloric experimental diets were formulated on a digestible amino acid basis to produce diets containing 0, 5, 10, 15, and 20% DDGS, respectively. With increasing of dietary DDGS levels, a linear and quadratic reduction (P < 0.05) was observed in the body weight (BW) at d 42, average day gain (ADG) and average day feed intake (ADFI) from d 11 to 42, breast meat yield, the moisture and protein content in the breast meat, and dietary DM and EE utilization. Moreover, a linear and quadratic increase (P < 0.05) was observed in the b* value of the breast meat and serum total cholesterol and triglyceride concentrations. Compared with the control group, the group with 10% inclusion of DDGS exhibited no adverse effect on growth performance, carcass characteristics, serum biochemical indexes, meat physical and chemical quality, nutrient utilization, and the SIDAA of the diets (P > 0.05). These results suggested that 10% of corn DDGS can function as an alternative ingredient to corn and soybean meal, and the optimal levels of DDGS in the diets of ducks aged from 11 to 42 d depends more on its quality.

Progress in Almond Quality and Sensory Assessment: An Overview

World production of shelled almonds has reached 3.2 million tonnes (FAO 2020). Almond production has grown during the last decennium, also because of the consumer conviction that almonds have significant health benefits. Almonds have exceptional nutritional and organoleptic characteristics, and proper assessment of the quality of almonds is of utmost importance. Almonds have a nutritional value that is relatively low in total sugars (4.35 g/100 g of almonds) but rich in lipids, proteins, minerals, vitamins, and phytonutrients, making them a healthy and nutritious food. The almond kernel is particularly rich in protein, the second most important fraction after the lipid fraction. The protein content of almond kernel depends on the cultivar and varies from 8.4% to 35.1%. This review examines current advancements in the quality assessment of almonds, evidencing above all their nutritional characteristics, health benefits and the influence of processing on shelf life. Our aim was to provide an overview in order to improve the quality of almonds and the sustainability of the whole production. According to the literature, almonds can provide many health benefits and are a great economic resource. This review will help almond producers to choose the best cultivars to cultivate and, in the final analysis, enhance the qualitative characteristics of almonds. Our review is also an important resource for scientists. It provides state of the art research and can offer inspiration for other researchers.

Determination of the Nutritional Properties of Snail Meat and Its Comparative Analysis with Other Animal Species

In Ukraine, in today’s conditions, snails, which are widely used for food in a number of European countries, are of increased interest. Over the past few years, this type of shellfish has been intensively harvested for processing and exporting abroad. However, there is not much data on the nutritional properties of snail meat, and there is practically no such information in Ukraine. The aim of this study is to determine the chemical composition (wet, dry matter, and energy value) of raw and cooked snail meat Helix aspersa maxima, Helix aspersa muller, Helix pomatia and conducting their comparative analysis among themselves with other types of meat. Indicators of nutritional properties were determined according to the following methods. The moisture and fat content was determined according to DSTU ISO 1442:2005; DSTU ISO 1443:2005, respectively. The mass fraction of dry matter, protein, ash, and caloric content of meat was determined by the methods described by P.V. Zhitenko and others. Comparative analysis of snail meat with other animal species was carried out based on literature sources. In the study, the authors found that on average in snails of the following species: Helix aspersa maxima, Helix aspersa muller, Helix pomatia it contains moisture – 72.03±0.29% and dry matter – 27.97±0.29%, of which: protein – 22.83±0.3%, fat – 0.23±0.03%, carbohydrates – 2.07±0.17%. It was determined that the indicators of moisture, dry matter, protein, fat, carbohydrates, ash and energy value in snails of all three species taken in the experiment did not differ significantly from each other. At the same time a sample of boiled snail meat Helix pomatia it has a higher chemical composition compared to the other two types of snails, namely: dry matter (28.5%), protein (23.4%), fat (0.3%) and energy value (103.9 kcal/100 g). Comparing the obtained data on the study of the chemical composition of raw and boiled meat of the same snail species, it was found that boiled meat is 14.2% more energetically valuable than raw, both in kCal/100 g and in kJ/100 g. We consider determining changes in organs at the cellular level, that is, conducting histological studies, taking into account different periods: hibernation, after hibernation and during the active period of their vital activity, to be a promising area of further research

THE EFFECT OF A NEW COMPLEX SORBENT OF MYCOTOXINS IN PIGS DIETS ON THEIR GROWTH PERFORMANCE, FATTENING AND MEAT TRAITS

Compliance with feed safety in livestock production requires pork producers to add mycotoxin-binding adsorbents to pig diets. Therefore, the purpose of the study was to evaluate the effect of two complex sorbents added to the diet of fattening pigs on their performance. The experiment included 90 pigs, which were kept in LLC “Tavriyski svyni” in the Kherson region. According to the principle of analogues, experimental animals were divided into three groups of 30 animals each: I – the control group of pigs consumed the basic diet “Grower”, and “Finisher”; pigs of experimental group II consumed the basic diet “Grower”, “Finisher” with the addition of 0.15% by weight of feed of a commercial analogue of mycotoxin adsorbent; animals of experimental group III received the basic diet “Grower”, “Finisher” with the addition of 0.15% by weight of feed of the complex preparation “Hepasorbex”. Animals that consumed feed containing adsorbents of mycotoxins had a higher live body weight, and average daily weight gain, reaching weights of 100 and 120 kg with lower feed conversion earlier compared to analogues of a control group. It was found that the introduction of “Gepasorbex” in the diet of store pigs of experimental group III at a pre-slaughter weight of 100 and 120 kg resulted in an increase in: slaughter yield, half-carcass length, muscle eye area, the weight of the hind third of the half-carcass and a decrease in the thickness of the fat compared to the control group. In terms of chemical composition, the meat of animals of experimental groups, both at slaughter in 100 kg and in 120 kg, met the requirements for pork of normal quality (NORMAL). At a live weight of 100 and 120 kg, pigs of experimental group III had significantly lower moisture content, higher protein, fat and ash content in meat. Due to the complex composition of “Gepasorbex” ingredients, the nutrients in the feed remained and were absorbed by the pig’s body, which is confirmed by higher productivity indicators and significantly reduces the cost of the main expense item of pig farms in pig production technologies – “Feed”. Therefore, this research is useful for specialists in pork production and processing in developing strategies for feeding pigs and obtaining quality raw materials for processing enterprises, which opens up ways to ensure food security in the country

The effect of Sauropus androgynus leaves extracted at different methods on performance and carcass quality in broiler chickens

The objective of this study was to analyze the effect of Sauropus androgynus leaves extracted at different methods on performance and carcass quality in broiler chickens. One hundred and eighty broilers aged 20 days were divided into six groups as follows: Broilers were fed a diet containing 5 g commercial feed supplement /kg as the control (P0); Broilers were fed a diet containing 2.5 g commercial feed supplement /kg plus 2.5 g Sauropus androgynus leaf (SAL) extracted at a 90oC/kg (P1); Broilers were fed diet containing 5 g SAL extracted at a 5°C/kg (P2); Broilers were fed diet containing 5 g SAL extracted at a 30°C/kg (P3); Broilers were fed diet containing 5 g SAL extracted at a 60oC/kg (P4); Broilers were fed diet containing 5 g SAL extracted at a 90°C/kg (P5). Sauropus androgynus leaves extracted at different methods significantly (P&lt;0.05) affected body weight, and cholesterol, protein, vitamin E, and β-carotene contents of meats (p&lt;0.05), but it did not significantly affect feed intake, feed conversion ratio, carcass weight, carcass color cooking loss, meat taste and odor, and meat fat contents (P&gt;0.05). In conclusion, supplementation of Sauropus androgynus extracted at 30oC could replace 100% commercial feed supplement. Supplementation of Sauropus androgynus leaf extracted at 60oC or 90°C reduced meat cholesterol. In addition, this extract inclusion resulted in higher meat protein content as compared with the control.

The behavior of apricot kernel oil body and proteins during in vitro gastric and intestinal digestion

In this study, an apricot kernel milk suspension was prepared, for which Hacıhaliloğlu-type raw and roasted apricot kernels were used. Protein, total lipid, and ash contents of apricot kernels and apricot kernel milk were determined. Palmitic acid, oleic acid, and linoleic acid were considered as major fatty acids according to gas chromatography. During in vitro gastrointestinal digestion, the proteins of raw and roasted apricot kernel milk were hydrolyzed and pepsin-resistant proteins were determined. No difference was recorded between the pancreatic lipase penetration in the oil–water interface of oil bodies of both milk types.

Meat Quality of Guinea Pig (Cavia porcellus) Fed with Black Soldier Fly Larvae Meal (Hermetia illucens) as a Protein Source

The most widely used feed ingredients in the world are fishmeal and soybean, which, despite having high-quality digestible protein and good fat content, are considered environmentally unsustainable and increasingly expensive. This issue also involves the guinea pig, a very important animal protein source for people in Andean regions in South America. Here we investigate the substitution of soybean meal with 50% and 100% black soldier fly larvae meal in the guinea pig diet and its effects on meat quality (fatty acid profile, amino acid profile, water-holding capacity, pH, proximal composition, and color). The results showed no differences in the protein content and amino acid profile of meat nor in the n-6:n-3 and P/S ratios, but did show an increment in the desirable fats (mono- and polyunsaturated fatty acids) in the guinea pigs fed with black soldier fly larvae meal. All the other analyzed parameters showed no differences among the diets tested. These results suggest that total replacement of soybean meal with black soldier fly larvae meal in guinea pig nutrition is feasible since meat quality was maintained or improved.

KUALITAS KIMIA DAGING KERBAU KALIMANTAN SELATAN (Buballus bubalis) PADA EKOSISTEM PEMELIHARAAN BERBEDA

This study aims to determine the chemical quality (water content, protein content and fat content) of South Kalimantan swamp buffalo meat in different ecosystems. The research was conducted using survey and laboratory methods. Meat samples were taken from three Slaughterhouses (RPH), RPH Basirih, RPH Martapura and RPH Pelaihari. The samples were then taken to the laboratory to test the chemical quality of buffalo meat. The sample of swamp buffalo meat used was the Longissimus dorsi muscle. The resulting data were analyzed and tabulated based on the maintenance ecosystem, namely the swamp buffalo kept in the swamp ecosystem and the swamp buffalo kept in the terrestrial ecosystem. The data obtained were then grouped and tested using the Independent Samples Test. The results showed that the difference in the buffalo rearing ecosystem did not affect the protein and fat content but had a very significant effect on the water content of the buffalo meat produced (P&lt;0.01).

Using sheep selection to improve the nutritional value of lambmeat

Relevance. The article provides a justification for the use of sheep selection taking into account the intra-breed type of Prekos ewes in purebred breeding and crossing with producers of semi-fine wool breeds Romney-Marsh and Kuibyshevskaya to improve the biological usefulness of meat in offspring.Methods: scientific and economic experiment in the use of different selection options, taking into account the productive type of sheep of the Precos breed.Results. The article presents the results of a study on the influence of the selection of sheep on the composition of lambmeat, increasing the usefulness and quality of meat and, thus, the efficiency of its production. It was found that the content of water in the meat of crossbred animalswas lower compared to purebred Precos. There is a lower water content in the meat of rams obtained from sheep of the Precos meat-wool type, both in purebred and crossbred animals. In terms of the protein content in meat, there is an advantage in rams with purebred breeding and crossing compared to meat obtained from the wool-meat type of queens. In the hip bran of purebred animals and crossbreeds with the Kuibyshev breed, this superiority was 1.1% (Р &gt; 0.95), and in the lumbar bran of Romney-Marsh crossbreeds, this difference was 1.6% (Р &gt; 0.95). Mutton from the offspring of the sheep of meat-wool type is characterized by a significantly high content of the essential amino acids threanine, lysine, leucine, phenylanin and isoleucine in comparison with meat from the offspring of the wool-meat type of sheep. A significant superiority was also established in the content of interchangeable amino acids — oxyproline, serine, tyrosine, proline, glycine, aspartic and glutamic acid, cystine and analin.

Predicting Single Kernel Moisture and Protein Content of Mushroom Popcorn Using NIR Spectroscopy: Tool for Determining their Effect on Popping Performance

HighlightsPrediction models for high accuracy measurement of single kernel (SK) moisture content (MC) and protein content (PC) were developed using near-infrared reflectance (NIR) spectroscopy.USDA-ARS tube SKNIR instrument sorted individual kernels based on single kernel protein content (SKPC) which enabled determining the effect of three PC levels within a popcorn variety on popping performance.Variety, MC, and PC affected popping expansion, ball rate, and number of unpopped/half-popped kernels.Within popcorn variety, increased PC significantly increased expansion and reduced number of unpopped kernels but did not affect ball rate of popped flakes.The ability to sort single kernels for specific quality parameter, such as PC, is an important and useful tool for popcorn breeders and processors to meet consumer demand for specialized products.Abstract. The increasing demand for specialized high-quality popcorn products necessitates that the popcorn industry continuously identify quality parameters that can be improved through plant breeding or manipulated or sorted for improved end-products. Relationships between protein content (PC) and popping performance (expansion, ball rate, and number of unpopped kernels) has been investigated but there has been no research on segregating individual kernels from within the same variety for specific PC ranges, which may eliminate possible interference from some underlying variety- or production-related effects. Prediction models for determination of single kernel moisture content (MC) and PC were developed for the USDA-ARS tube single kernel near infrared reflectance (SKNIR) instrument. Both parameters were predicted with high accuracies for independent validations. MC showed an R2 of 0.94 and SEP of 0.25% while PC had R2 of 0.92 and SEP of 0.35%. Popping tests showed that increased kernel PC significantly (p&amp;lt;0.05) increased expansion and lowered the number of unpopped kernels but had no effect on the ball rate of popped flakes. Thus, applications that require increased overall expansion and reduced number of unpopped kernels may be addressed by the removal of low protein popcorn kernels from a popcorn lot, which can be achieved using an automated SKNIR technique. The SKNIR technique also provides a means for plant breeders to work on targeted/specific PC or PC range based on the single kernel selection. Keywords: Ball rate, Expansion, Mushroom popcorn, NIR spectroscopy, Popcorn quality, Single kernel, Unpopped kernels.

Carcass characteristics and selected meat quality traits from commercial broiler chickens of different origin.

The aim of the study was to compare carcass and meat quality traits in 42-day-old Ross 308 and Cobb 500 broiler chickens. Forty carcasses were studied. Acidity (pH24 ) and electrical conductivity (EC24 ) of pectoralis major muscle and drumstick were determined 24 h postmortem. After carcass cutting, samples of breast and leg meat were collected for determination of quality traits. Broiler genotype had a significant effect on abdominal fat content in carcass and on water, protein, fat, sodium, and magnesium content in breast meat. Bird origin had an effect on the lightness, yellowness, horizontal diameter of muscle fiber, horizontal:vertical (H:V) diameter ratio, and most textural characteristics of pectoralis major muscle, as well as on the pH (pH24 ), electrical conductivity (EC24 ), and yellowness (b*) of leg muscles. Sex of birds had a significant effect on carcass weight, water, fat and collagen content, L*, a*, b* color attributes, and chewiness and gumminess of breast meat and on water and protein content in leg muscles. The present study provided information on the differences in carcass and meat quality between Ross 308 and Cobb 500 broiler chickens.