RESULTS OF COMPARATIVE SLAUGHTER INDICATORS OF EDILBAY SHEEP BREED

Abstract

Sheep of edilbay breed and type with whitt and light-grey wool raised in “Suyindyk” and “Kurmangazy” stud farms in Aturau oblast are characterized with high slaughter and meat qualities that are attributes of the best breeds of the fat-rumped sheep for meat-fat production. It is determined that in 4-4.5 and 16 months old ram lambs live weight right before slaughter, carcass weight with rump and dressing weight were 1/3 and ¾ of the one in adult rams respectively. This is evidence of fast maturing of young animals of the named breed and type. It was also determined that outcome of the carcass’s flash in young animals in the above mentioned groups increases with the age while outcome of the bones and tendons reduces. These indicators at 4-4.5 months of age were 80.0-80.5 and 19.5-20.0%, at 6.5-7 months – 80.3-80.8 and 19.2-19.7%, at 16 months of age – 81.5-81.8 and 18.2-18.5% respectively It was determined that absolute mass of the muscle tissue increases with the age, at the same time comparative share of the muscle tissue in the carcasses of the ram lambs increases too: these indicators at 4-4.5 months of age were 10.3-11.11 kg and 56.8-57.5%, at 6.5-7 months – 10.94-11.89kg and 56.3-56.7%, at 16 months of age – 19.57-20.90 kg; 59.1-59.4%. Obtained data evidence that fat tissue grows more intensively during the period from 4-4.5 till 6.5-7months of age while muscle tissue grows more intensively during the further period. It could be concluded thatsuch development of the mentioned tissues in the carcass composition is a characteristic of the fat-rumped sheep adapted to pasture management. Овцы эдилбайской породы, разводимые в стадах племзаводов ПК «Суиндикский», ПК «Макаш» и имени Курмангазы Атырауской области, характеризуются высокими убойными и мясными качествами, свойственными лучшим породам грубошерстных овец мясо-сального направления продуктивности. Установлено, что у 4-4,5 мес. баранчиков при отбивке предубойная живая масса, масса туши с курдюком и убойная масса составляют более 1/3, а у 16 месячных – примерно на уровне ¾ показателей взрослых баранов, что говорит о высокой скороспелости молодняка эдилбайских овец.Установлено также, что выход мякоти туши у молодняка исследуемых групп с возрастом повышается, а костей и сухожилий, наоборот, снижается. Эти показатели в 4-4,5 месячном возрасте при отбивке колеблются соответственно в пределах 80,0-80,5 и 19,5-20,0%, в 6,5-7 месячном – 80,3-80,8 и 19,2-19,7%, в 16 месячном – 81,5-81,8 и 18,2-18,5%.