USING OF PUMPKIN SEEDDERIVATIVE PRODUCTS IN BULLOCKS DIET FOR MARBLE BEEF PRODUCTION

Abstract

A fat content increase by 10 and 20 % above the norm in the diets of fattening steers of the Kazakh white head breed (Zavolzhsky type) due to pumpkin seed cake and fuzz obtained after cold pressing (no higher than 60°C) contributed to an increase in consumption and digestibility of feed nutrients. Young animals that consumed cake and fuzz in their diets had the digestibility coefficient of dry matter by 0,7 and 1,1 % higher than animals in control group, organic matter by 1,6 and 1,9 %, crude protein by 1,7 and 2,5 %, and crude fat by 2,4 and 2,8 %. The steers in experimental groups were superior to the steers in control group in terms of the growth rate. Their body weight at the age of 18 months was higher by 3,62 (P>0,999) and 5,43 % (P>0,999), respectively. It is cost-efficient to use pumpkin seed by-products in rations of fattening steers. The level of beef production in the experimental groups was higher by 3,90 and 2,70 % at its average price of 90 rubles per 1 kg and by 52,90 and 51,60 % at a price of marbled meat of 125 rubles per 1 kg.