Abstract
The article presents materials on the study of the cows’ exterior and meat productivity of Aubrac gobies in the acclimatization period of the third and sixth generation animals in the conditions of Northern Trans-Urals. It was established that as a result of 18 years of Aubrac breeding, animals were formed in the enlarged type of physique in the conditions of the Northern Trans-Urals. Cows of the sixth generation had larger measurements in shoulder height by 9.7cm, in rump - by 5.2 cm, slantwise body length - by 12.8 cm, as well as chest depth - by 5.5cm, chest width by 9.2 cm and chest girth by 10.1 cm. The highest live weight in growing gobies between 9 and 18 months was in sixth-generation animals. The indicators that characterize animals’ meat productivity increased. The slaughter weight of the sixth-generation gobies was 330 kg. It was found that by the size of the carcasses’ edible part, animals of the sixth generation were superior to the peers of previous generations. The amount of muscle tissue in the sixth-generation gobies was the highest and amounted to 243.2 kg, muscle tissue output - 77.5%.
Highlights
In the Russian Federation, meat cattle breeding has been intensively developing in the last decade [1,2,3]
The Aubrac breed was bred in France; during its formation, it was reoriented from dairy to meat productivity direction [4]
In comparison with animals imported from France, the measurements magnitude of shoulder height increased by 8.2 and 9.7 cm (P≥0.999), rump height - by 5.0 and 5.2 cm (P≥0.999), slantwise body length - by 3.3 (P≥0.99) and 12.8 cm (P≥0.999) in cows of the third and sixth generation, respectively
Summary
In the Russian Federation, meat cattle breeding has been intensively developing in the last decade [1,2,3]. The industry intensification is associated with the use of imported livestock breeds, one of which is the Aubrac breed. The Aubrac breed was bred in France; during its formation, it was reoriented from dairy to meat productivity direction [4]. Selection with the breed in the country of origin is carried out on improving meat forms, increasing animals' meat productivity indicators at slaughter. The cattle of this breed were brought to Tyumen region in 2002. More than six generations of animals have been obtained, which indicates the completion of the breed's acclimatization process in the zone of the Northern Trans-Urals [5,6,7]
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