Beef productivity of steers of different productivity

Abstract

The purpose of the work was to compare the indicators of beef productivity of steers of different breeds and different productivity. The results of assessing the growth intensity and slaughter traits of steers have been presented in the article. The object of the research was steers of Black-and-White (dairy productivity) and Simmental (dairy and beef productivity) breeds. When studying the fattening traits of steers, the dynamics of live weight, its absolute, average daily and relative gains were established. When assessing meat traits, the live weight after fattening and pre-slaughter weight, slaughter weight and slaughter yield were determined, and a tasting assessment of the meat and broth was carried out. When comparing the beef productivity indicators of steers of two breeds, it was found that the breed of animals had a signifi cant infl uence on live weight and its growth. At the end of the rearing period, animals of Simmental breed had the highest live weight 496,0 kg; for steers of Blackand- White breed the fi gure was significantly lower 449,5 kg. When slaughtering animals, carcasses with the high slaughter yield were obtained. The largest carcass weight and slaughter yield were in animals of Simmental breed: 275,7 kg and 58,8 % (p ≤ 0,01), respectively. The results of the tasting assessment showed that the meat of Simmental steers was superior in organoleptic qualities to the meat of steers of Black-and-White breed. Thus, in order to increase the volume of beef production and improve its quality with optimal technological indicators in the Penza region, it is recommended to breed steers of Blackand-White breed, and to obtain high-quality beef, to rear animals of Simmental breed.