Fattening of steers of Kalmyk breed in Yakutia with using of local natural mineral feed additives
The results of scientifi c and production experiment in fattening of steers of Kalmyk breed under farm environments of feeding have been presented in the article. The ration of the experimental group of steers included local natural mineral feed additives: Khongurinsky zeolite and Kempendyskaya salt, the deposit of them is located in the Suntarsky district in the Republic of Sakha (Yakutia). It has been found when adding 200 g/head/day of zeolite and 45 g of salt to the ration for fattening steers the growth of young animals has increased by 12,0 % compared to the control group. The research has confi rmed the prospects of using local natural mineral feed additives in the ration of fattening steers in order to increase the growth and development of animals. In a short period of fattening after feeding (for 60 days), you can get an absolute gain in live weight from 40 to 50 kg with an average daily gain of 700–800 g with a daily feed consumption of 8 to 9 EFU with the fi nal live weight of 350 to 400 kg at the age of 18 months in farm environments of feeding. The feed conversion rate was 9,77. The level of profi tability from rearing of steers of Kalmyk breed by the age of 18 months has increased in comparison with the 15-month age, and in all age periods young Kalmyk cattle were more profi table than their herdmates of other local zoned breeds. For example, the superiority at 15 months of age was 8,2–3,5 %, at 18 months – 11,7–3,4 %. Economic calculations have shown that the prime-cost of 1 kg of meat at slaughter is 143,34 rubles, profi t per 1 ruble of costs – 2,14 rubles, profi tability – 186,13 %. Higher profi ts and profi tability obtained in the sale of the Kalmyk steers. Rational use of fattening-off and organization of fattening of steers leads to minimizing the prime-cost and increasing the effi ciency of beef cattle breeding in Yakutia.