Archive | 2019
Продуктивность помесных с австралийским мясным мериносом овец ставропольской породы в Поволжье
Abstract
The study was conducted in ZAO Novaya Zhizn” in Saratov region. Stavropol breed ewes of the local population were inseminated with sperm of highly productive half-blood Australian meat Merino rams, as a result there was received 1/4AMM+3/4ST offspring. Then these sheep were bred inter se. Productivity indicators were studied in the resulting offspring under one year of age and at the age 13-14 months. After that backcrossing of 1/4AMM+3/4ST with Stavropol breed was performed, as a result, there was received 1/8AMM+7/8ST offspring, productivity indicators were studied in the animals under one year of age and at the age 13-14 months. After that the productivity indicators were determined through consolidation by selecting crossbred 1/8AMM+7/8ST sheep, the experimental data on the use of the genotype of Australian meat Merino in the local Stavropol population were analyzed and summarized. The body weight of 1/8АММ Stavropol breed gimmers was 7.67% (P > 0.999) higher than the body weight of their purebred herdmates. The shearing of greasy wool from the crossbred gimmers was 5.97% higher (Р > 0,999), the shearing of pure wool was 1.46% higher. The wool with almost the same amount of mechanical impurities was less greasy (26.3 and 24.6%, respectively), had lower iodine value (21.9 and 20.5 units, respectively) and was more cream-colored. Thus, 1/8 hybrids at the age of 13-14 months showed high rates of wool quality and body weight in comparison with purebred animals.