SHAPING THE MEAT PRODUCTIVITY OF MEAT AND WOOL SHEEP OF DIFFERENT GENOTYPES

2021 ◽  
Vol 1 (1) ◽  
pp. 66-71
Keyword(s):  
Muscle Tissue ◽  
Live Weight ◽  
Chemical Components ◽  
Feeding Period ◽  
Meat Content ◽  
Quantitative And Qualitative Traits ◽  
Calcium And Phosphorus ◽  
Meat Productivity ◽  
Selection Of

The article presents the results of the control slaughter of 8 months. rams after feeding with feeding, obtained from the selection of semi-fine-fleece queens of Akzhaik meat and wool sheep with producers of Akzhaik and Kuibyshev breeds. Studies have shown that the KB x AKMSh crosses before feeding with feeding had a better live weight than purebred peers. During the feeding period with feeding in terms of the rate of gain in live weight, the Kuibyshev rams' hybrids retained their superiority. Feeding qualities of crossbred animals in the variant of selection of KB x AKMSh in comparison with purebred AKMSh x AKMSh indicates their better use of feed and better live weight. Consideration of the quantitative and qualitative traits of meat productivity in the studied genotypes revealed the superiority of the KB x AKMSh genotype over the AKMSh x AKMSh genotype in terms of fresh carcass weight, slaughter weight, slaughter yield, muscle tissue content in the carcass and meat content coefficient. For all groups, the slaughter yield was 47.8 -48.7%. The meat content coefficient at the control slaughter of young animals at 8 months indicates the influence of producers of all groups, with somewhat better meat and wool rams in Kuibyshev, on improving the meat quality of carcasses. Analysis of the results of studies of the chemical composition of muscle tissue indicates certain differences in the amount of its chemical components in the studied animals, depending on the genotype. The muscle tissue of the KB x AKMSh genotype contained less moisture, but more protein and fat in comparison with the meat of akzhaik purebred animals. There were no significant changes in the amount of ash, calcium and phosphorus in the muscle tissue of young animals of different genotypes. In general, the carcasses of all the rams were well formed and characterized the sheep of the meat and wool direction of productivity with the best slaughter indicators from the producers of the Kuibyshev breed.

scholarly journals EFFECT OF ABSORPTION CROSSING ON YOUNG CATTLE CARCASS

2020 ◽  
pp. 41-46
Author(s):  
Е.А. НИКОНОВА ◽  
В.И. КОСИЛОВ ◽  
И.Ю. БЫСТРОВА ◽  
Е.Н. ПРАВДИНА
Keyword(s):  
Meat Products ◽  
Live Weight ◽  
2Nd Generation ◽  
Meat Content ◽  
Absolute Mass ◽  
Content Index ◽  
Morphological Composition ◽  
Young Cattle ◽  
Meat Productivity

Проблема и цель. Цель исследований – установить генотипические различия по убойным показателям чистопородных и помесных телок, полученных от скрещивания красной степной и голштинской пород, для более широкого использования эффекта гетерозиса в целях увеличения мясной продуктивности. Методология. Для проведения исследования были сформированы 3 группы телочек по 15 голов в каждой: I – красная степная порода, II – ½ голштин х ½ красная степная,III – ¾ голштин х¼ красная степная. По результатам контрольного убоя телок были определены убойные качества и морфологический состав. Качество полученной мясной продукции устанавливали путем определения морфологического состава полутуши и расчета полученного индекса мясности, соотношения съедобных и несъедобных частей туши, выхода мякоти на 100 кг предубойной живой массы. Результаты. Результаты исследований показали, что вследствие проявления эффекта скрещивания помесные телки превосходили чистопородных сверстниц по массе полутуши на 10,9 кг (12,0 %, Р<0,001) и 3,9 кг (4,3 %, Р<0,001), тогда как помеси 2-го поколения несколько уступали помесям 1-го поколения на 7,0 кг (7,4 %, Р<0,01). Неодинаковый выход мякоти у телок разных генотипов был обусловлен межгрупповыми различиями по массе полутуши. Было установлено, что помеси 1-го поколения превосходили по абсолютной массе мякоти телок красной степной породы на 9,3 кг (13,1 %, Р<0,001), а также по относительной – на 0,8 %, а помесей 2-го поколения, соответственно, на 6,0 кг (8,1 %, Р<0,01) и 0,5 %. В свою очередь, помеси 2-го поколения превосходили своих чистопородных сверстниц по изучаемым показателям на 3,3 кг (4,7 %, Р<0,05) и 0,3 % соответственно. Заключение. В результате исследований было установлено положительное влияние скрещивания на убойные показатели и качество мясной продукции. Problem and purpose. The aim of the research is to establish genotypic diferences in the slaughter parameters of purebred and crossbred heifers obtained from crossing red steppe and Holstein breeds, for a wider use of the heterosis efect in order to increase meat productivity. Methodology. To conduct the study, 3 groups of heifers were formed with 15 heads each: I – red steppe breed, II – ½ Holstein x ½ red steppe, III - ¾ Holstein x ¼ red steppe. According to the results of the control slaughter of heifers, the slaughter qualities and morphological composition were determined. The quality of the obtained meat products was determined by examining the morphological composition of the half-carcass and calculating the resulting meat content index, the ratio of edible and inedible parts of the carcass, the yield of meat per 100 kg of pre-slaughter live weight. Results. The results of the research showed that due to the efect of crossbreeding, crossbred heifers outnumbered purebred peers by 10.9 kg (12.0 %, P<0.001) and 3.9 kg (4.3 %, P<0.001), while crossbreeds of the 2nd generation were slightly inferior to crossbreeds of the 1st generation by 7.0 kg (7.4 %, P<0.01). The uneven yield of meat in heifers of diferent genotypes was due to intergroup diferences in the mass of the half-carcass. It was found that hybrids of the 1st generation surpassed red steppe breed heifers by the absolute mass of meat by 9.3 kg (13.1 %, P<0.001), and relative – 0.8 %, and hybrids of the 2nd generation, respectively, 6.0 kg (8.1 percent, P<0.01) and 0.5 %. In turn, crossbreeds of the 2nd generation exceeded their purebred peers in the studied indicators by 3.3 kg (4.7 %, P<0.05) and 0.3%, respectively. Conclusion. As a result of the research, a positive efect of crossbreeding on slaughter indicators and the quality of meat products was established.

СОВЕРШЕНСТВОВАНИЕ СТАД СКОТА СИММЕНТАЛЬСКОЙ ПОРОДЫ ПО МОЛОЧНОЙ И МЯСНОЙ ПРОДУКТИВНОСТИ

2020 ◽  
Author(s):  
N.V. SIVKIN ◽  
N.V. STREKOZOV ◽  
V.I. CHINAROV
Keyword(s):  
Milk Yield ◽  
Live Weight ◽  
Breeding Value ◽  
Early Age ◽  
Group I ◽  
Breeding Herd ◽  
Simmental Cattle ◽  
Meat Productivity ◽  
Selection Of ◽  
Meat Type

В симментальской породе предусматривается разведение скота, сбалансировано сочетающего молочную и мясную продуктивность. Однако в практике совершенствования племенных стад в подборах быков доминируют улучшатели удоя, что во многом предопределяет результаты селекции и продуктивный тип животных. Объектом нашего исследования стало стадо чистопородного симментальского скота в условиях стойловой системы беспривязного и привязного содержания коров. Для изучения эффективности использования быков-производителей разного племенного достоинства сформировали 2 опытные группы: I состояла из бычков, полученных от отцов с племенной ценностью (ПЦ) по удою 100 кг и более, а во II с ПЦ от 0 до 100 кг молока. Симментальские бычки, отобранные для контрольного убоя, достигали весовых кондиций 500 кг и более в 17,5 мес при среднесуточном приросте 911 г. При использовании на маточном поголовье быков-производителей с улучшающим эффектом по удою 100 кг и более, их сыновья (I группа), на фоне более высоких суточных приростов (на 30 г) и раннем возрасте достижения живой массы 500 кг (на 18 дней) имели массу и выход туши на 21,4 кг и 2,7 ниже, чем у бычков II группы. При формировании молочно-мясного типа быки-производители с умеренной племенной ценностью по удою обеспечивали получение потомства, сочетающего молочную и мясную продуктивность в экономически значимых пропорциях.The Simmental breed provides for the breeding of cattle that combines milk and meat productivity in a balanced proportion. However, in the practice of improving breeding herds, the selection of bulls is dominated by milk yield improvers, which largely determines the results of selection and the productive type of animals. The object of our research was a breeding herd of purebred Simmental cattle in variety feeding and housing practices. To study the effectiveness of using bulls-producers of different breeding values, 2 experimental groups were formed: I consisted of bulls received from fathers with a breeding value (BV) of milk yield 100 kg or more, and II with a BV from 0 to 100 kg of milk. Simmental bulls selected for control slaughter reached weight standards of 500 kg or more in 17.5 months with an average daily increase of 911 g. When used on breeding of bulls with an improving effect on the yield of 100 kg or more, their sons (group I), against the background of higher daily gains (30 g) and an early age of reaching a live weight of 500 kg (18 days), had a mass and carcass yield of 21.4 kg and 2.7 lower than that of group II bulls. When forming a dairy-meat type, producing bulls with a moderate breeding value for milk yield provided for the production of offspring that combined dairy and meat productivity in economically significant proportions.

Influence of different factors on the growth rate of young animals and the quality of beef

2021 ◽  
pp. 28-39
Author(s):  
V. N. Pristupa ◽  
D. S. Torosyan
Keyword(s):  
Experimental Studies ◽  
Live Weight ◽  
Federal District ◽  
Steppe Zone ◽  
Industrial Complex ◽  
Black And White ◽  
Dry Steppe ◽  
Intensive Rearing ◽  
Meat Productivity

The purpose of the work was to study and identify the main factors aff ecting the quantity and quality of beef produced and sold in the Southern Federal district. A comparative assessment of the growth, development, formation of meat productivity and quality of beef of young animals of beef, dual and dairy breeds with stall-pasture technology and intensive rearing in the industrial complex. Experimental studies have been carried out in farms in the Rostov region. The object of research was cows with calves of Kalmyk, Hereford, Aberdeen-Angus, Russian komolaya, Kazakh White-headed breeds, as well as young animals of the same breeds, in addition, Black-and-White and Swiss breeds. Removable live weight in Hereford steers at 18 months of age was 658,0 kg, and Aberdeen-Angus – 655,2 kg. Domestic steers of Kalmyk were 41–44 kg lower in live weight than their herdmates of two imported breeds. However, with intensive rearing at 18 months of age, steers of Kalmyk breed had a removable live weight of more than 613,7 kg and a carcass weight of 326 kg. The yield of hot carcass was 55,4 %, and the slaughter yield was 58,89 %, which was only 1–2 % lower than the world’s leading beef breeds. It has been found when analyzing the results of boning the half-carcasses of experimental steers that the biggest weight of half-carcasses and the content of muscle and fat tissue in them in absolute terms were in Hereford steers. Steers of Kalmyk breed took the third place in terms of weight of large-sized semi–fi nished products and signifi cantly lost to Aberdeen-Angus herdmates by 7,3 kg or 6,5 %, and Hereford steers by 9,2 kg or 8,3 %. The results obtained prove the expediency of using stallpasture technology in the dry-steppe zone of the Southern Federal district when rearing young animals for beef up to 350–400 kg live weight at 15 months of age and its subsequent intensive rearing under industrial technology, in order to obtain the live weight of more than 570 kg and produce cost-eff ective beef.

Infl uence of crossbreeding and level of feeding on microstructural indicators of lamb

2020 ◽  
pp. 32-40
Author(s):  
I. I. Dmitrik
Keyword(s):  
Muscle Tissue ◽  
Nutritional Value ◽  
Histological Analysis ◽  
Meat Industry ◽  
North Caucasus ◽  
Marbling Score ◽  
Sheep Meat ◽  
Histological Method ◽  
Meat Productivity

When studying indicators that characterize the quality of meat and its nutritional value as part of the development and improvement of existing research methods, histological analysis of the tissues included in it becomes increasingly important. Histological method has been used to study the microstructure of muscle tissue (m. longissimus dorsi) and chemical composition in sheep of diff erent genotypes and reared at diff erent feeding levels. It has been found that the muscle tissue of sheep obtained from crossbreeding of breeds North Caucasus (SC) with Texel (T) has been characterized by a large amount of muscle fi bers by 5,0 and 11,3 % (P < 0,05), the smaller amount by 5,7 and 18,6 % (P < 0,05) in diameter, a higher “marbling” score by 5,2 and 8,3 points, and the lower content of connective tissue by 0,8 and 1,3 abs.% compared to purebreds North Caucasian and from crossbreeding North Caucasian with Poll Dorset breed (PD). Chemical analysis of meat revealed a tendency to increase the content of dry matter and fat by 1,1 and 0,1 abs. % in lamb genotype T×SC and less than the amount by 1,1 and 0,1 abs.% moisture compared to purebreds and PD×SC. Increasing the energy supply of sheep, regardless of breed affi liation, contributes to the formation by 10 % more number of muscle fi bers per unit area and the decrease in their diameter, which increases the “marbling” of lamb and increases its consumer quality. The results have been obtained indicate the feasibility of using morphometric indicators of muscle tissue in the development of criteria for assessing the quality of sheep meat productivity, intended for practical use in agriculture and the meat industry.

THE EFFECTS OF SEX AND AGE OF MALE AT CASTRATION ON GROWTH AND CARCASS QUALITY OF YORKSHIRE SWINE

1961 ◽  
Vol 41 (1) ◽  
pp. 30-39 ◽  
Author(s):  
L. A. Charette
Keyword(s):  
Growth Rate ◽  
Iodine Number ◽  
Feed Efficiency ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Carcass Quality ◽  
Selection Of ◽  
Effect On Growth

The effects of sex and age of castration of males on growth rate, feed efficiency and carcass characteristics in bacon type swine were measured using 16 pigs each as gilts, entire boars, and boars castrated at birth, 6, 12, 16, and 20 weeks of age. Castration at 20 weeks was too late since some pigs reached 200 pounds live weight before that age. Boars consumed less feed daily than barrows and gilts, were thinner in loin fat, and yielded a higher percentage of shoulder than gilts. The carcasses of boars and gilts were longer, had less fat covering over the shoulder and back, a larger area of loin, and a higher iodine number than those castrated late. Acceptability tests showed that sex or age of castration did not affect the flavour, odour, or tenderness of the meat.Purebred breeders can delay castration for better selection of boars without any serious effect on growth, physical carcass characteristics, and feed requirements. Although the market discriminates against boars, it appears questionable whether castration is necessary when boars are slaughtered at 200 pounds before they reach the age of 150 days.

scholarly journals COMPREHENSIVE ASSESSMENT OF FARMING RAMS BREEDING VALUE RELATED TO DIFFERENT GENOTYPES

2020 ◽  
pp. 137-148
Author(s):  
Ivan Pomitun ◽  
Nadezhda Kosova ◽  
Igor Korkh ◽  
Lubov Pankiv ◽  
Natalia Boyko ◽  
...  
Keyword(s):  
Live Weight ◽  
Breeding Value ◽  
Daily Growth ◽  
Reproductive Ability ◽  
Individual Traits ◽  
Wide Range ◽  
Productivity Indicators ◽  
Meat Productivity ◽  
Breed Sheep

The results of evaluating the breeding value of rams of different genotypes by a wide range of productivity indicators of their descendants are presented. Tribal rams of the Kharkov interbreed type of Prekos breed of 2-3 years of age, as well as crosses from the introductory crossing of Prekos sheep with the Romanov breed and Merinolandsheep, were evaluated. The resulting offspring were grown under the conditions of one production flock. The evaluation considered the indicators of the reproductive ability of ewes, sex and type of birth of the offspring, the safety of lambs from birth to 20 days of age, the dynamics of the average daily growth of daughters in the uterus and at the age of birth to 20 days and from 21 to 90 days, live weight indicators were considered, cutting and length of hair of daughters at the age of 14 months. Studies have established that the average yield of lambs throughout the sample was 115.3 % per 100 ewes, with significant differences between the estimated producers - from 105.1 to 131.3 %. This indicator did not have a definite relationship with the genotype of the estimated sheep. Among the offspring of all rams, males slightly prevail over females in the ratio of 1.09 to 1. This advantage is due to the large number of rams born among same-sex twins. Their part exceeded 28 %, while only 23.4 % turned out to be similar in type of birth. By the sum of the ranks that were put to individual sheep for the indicators of the average daily growth of daughters at different periods of their growth, the best cross-breed sheep No. 1625 and No. 9953 are distinguished. On the whole, there is a fairly clear tendency for a positive relationship between the ranks for the growth rate in the embryonic period and the same indicator for posterity aged 21-90 days. According to both the ranking and the probity-based evaluation results, ram No. 1625 (a created line based on crossing with the Romanov breed) is assigned to complex improvers. The rest topping ram out to be improvers of individual traits, and the producer of the breed Prekos No. 1823 was an improvement in production of wool and length of staple. Ram No. 1960 turned out to be a complex deteriorator in the quality of offspring. The descendants of rams No. 4464 and 9953, derived from the breed of Merino landscape, reliably (p≤0.01), by 18.6-20.8 % in terms of wool coefficients, are inferior to the daughters of ram No. 1823, breed Prekos, which is an unconditional evidence of the strengthening of their characters meat productivity over wool one.

QUALITY INDICATORS OF WOOL CROSSBREDS BRIGHT AKZHAIK MEAT-WOOL BREED DEPENDING FROM THE SELECTION OF PARENTAL PAIRS

2016 ◽  
Vol 1 (2) ◽  
pp. 78-82
Author(s):  
Селионова ◽  
Marina Selionova ◽  
Траисов ◽  
Baluash Traisov ◽  
Баймишев ◽  
...  
Keyword(s):  
Textile Industry ◽  
Live Weight ◽  
Class I ◽  
Wool Production ◽  
Local Type ◽  
Meat Content ◽  
Technical Properties ◽  
One Year ◽  
Age And Sex ◽  
Selection Of

The purpose of the study is improving the wool productivity of sheep of Akzhaik meat-wool breed at the expense of different selections of parents. For research used two variants of selection of parental pairs: Akzhaik meat-wool sheep producing meat-tion type (weight not less than 110 kg, wool production in the original 9.5 kg, wool length of 15.0 cm, fineness of wool 50 quality) were paired with ewes class I and II at the age of 2.5 years is not a local type of herd age and sex depending on the class ewes were divided into two groups of 200 animals each. The same principle was formed the second option of selection of parental pairs. Only were used for mating with avamat-kami class I and II rams-manufacturers of custom herd (live weight 102 kg, wool production in the original 8.24 kg, wool length 15.5 cm, wool fineness 50 quality). The study of wool production and physico-technical properties of the wool yearling bright were carried out using established techniques in research laboratories of wool VNIIOK Stavropol. As a result of the conducted researches it is established that the increase in meat content of Akzhaik meat-wool sheep has no adverse effects on wool productivity bright. So the hair is bright at one year of age was typical for crossbreeding in fineness and the staple well-adjusted. Significant differences in physico-technical properties between the compared groups was not available and the wool meet the requirements of the textile industry for a homogenous semi-fine wool.

scholarly journals The Effect of Drying Parameters on the Quality of Pork and Poultry-Pork Kabanosy Produced according to the Traditional Specialties Guaranteed Recipe

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Marta Chmiel ◽  
Lech Adamczak ◽  
Katarzyna Wrońska ◽  
Dorota Pietrzak ◽  
Tomasz Florowski
Keyword(s):  
Relative Humidity ◽  
Salt Content ◽  
Raw Material ◽  
Chemical Components ◽  
Drying Process ◽  
Final Yield ◽  
Drying Conditions ◽  
Drying Chamber ◽  
Selection Of

The aim of this study was to determine the effect of differentiated air relative humidity during the drying process on selected quality features of TSG (traditional specialties guaranteed) pork and poultry-pork kabanosy. After heat treatment and 24-hour cooling at 4–6°C, the products were placed in three chambers at 15°C with differentiated air relative humidity: 60, 70, and 80%, respectively. The drying process was carried out until all variants of kabanosy achieved the required final yield of the product (<68%). Color components, water activity and shear force, water, protein, fat, and salt content, and the TBARS indicator values were determined. The drying process might be shortened (~50%) by a reduction of humidity in the drying chamber from 80 to 60%. The changes in the content of chemical components in pork kabanosy compared to poultry-pork ones demonstrated the different dynamics of the drying of the two types of kabanosy and the need for the selection of optimum drying conditions relative to raw material composition.

scholarly journals Effect of adsorbent and phospholipide on meat production and nutritional value of fattened calf bull meat

2021 ◽  
Vol 262 ◽  
pp. 02022
Author(s):  
Maksim Shabanov ◽  
Victor Temiraev ◽  
Taladin Kokov ◽  
Beslan Efendiev ◽  
Shamurat Herremov
Keyword(s):  
Meat Products ◽  
Live Weight ◽  
The Body ◽  
Meat Production ◽  
Study Results ◽  
Heavy Metal Salts ◽  
Group 3 ◽  
Young Cattle ◽  
Meat Productivity

One of the most effective ways of removing HM salts that have entered the digestive tract of fattened animals is the technological method of including adsorbent preparations in their diets, which, binding various toxins, excrete them from the body. The study purpose is to develop a method to increase the meat productivity and quality of meat of young cattle for fattening in a technogenic zone by inclusion of ToxySorb adsorbent in their diets with a high content of heavy metal salts in the amount of 1.25 kg/t of compound feed and lecithin in the amount of 10 g/100 kg of live weight. According to study results, it was shown that when these drugs were fed together in the indicated quantities, it contributed to better detoxification of xenobiotics. The calf bulls of experimental group 3 had the best slaughter indicators, as well as the best consumer, sanitary and hygienic properties of meat products.

Influence of the complex of amino acids and silicon dioxide on the productivity and quality of meat of broiler chickens

2021 ◽  
pp. 42-56
Author(s):  
V. N. Nikulin ◽  
A. S. Mustafina
Keyword(s):  
Amino Acids ◽  
Silicon Dioxide ◽  
Broiler Chickens ◽  
Live Weight ◽  
Chicken Meat ◽  
Poultry Meat ◽  
Feed Consumption ◽  
Meat Productivity ◽  
Experimental Group

In order to increase the meat productivity of poultry scientists around the all world are working to improve the breeding traits and technologies of housing and feeding. However, the efficiency of poultry meat production on an industrial basis depends not only on the strengthening and inheritance of breed qualities, but also on a complete and balanced feeding, including the use of new feed additives. All this generally affects the duration of rearing, the average daily and absolute live weight gains, the biological value and nutritional value of poultry meat produced in industrial conditions. The purpose of the work was to study the effect of the amino acid complex and silicon dioxide on the productivity and quality of broiler chicken meat. The paper scientifi cally substantiates and experimentally proves the effectiveness of using a rational dose of ultrafine silicon dioxide (300 mg/kg of feed) and the complex of amino acids (arginine – 7 g/kg, lysine – 6 g/kg, methionine – 2 g/kg) in the rearing of broiler chickens. Data on the positive influence of the studied factor on the consumption, digestibility and use of feed nutrients, as well as meat productivity and quality of broiler chicken meat have been obtained. The dependence of meat productivity and quality of chicken meat on physiological and biochemical parameters has been proved. Analysis of the results of the production experiment has been shown that the livability of poultry in the experimental group was higher than the control group by 1,4 %. This made it possible to reduce feed consumption to 100 g/head, and feed consumption per 1 kg of chicken growth in the experimental group by 9,2 %. Activation of metabolic processes of the body of broiler chickens of the experimental group contributed to the increase in their live weight, which increased the weight of the gutted carcass, the yield of meat by 13,8 %, and meat with off al for sale by 18,0 %. The efficiency of the complex application of amino acids and silicon dioxide in the production of poultry meat is economically justified.

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