REGULATION OF THE CONTENT OF EXCHANGE ENERGY AND ESSENTIAL AMINO ACIDS IN COMBINED FEEDS FOR YOUNG PIGS

Abstract

The determining factors of regulation of nutritional value of combined feeds for pigs are the level of exchange energy and the amount of lysine per 1 MJ of exchange energy. In this case the necessary condition is to comply with the ratio of other essential amino acids to lysine. Balancing of combined feeds on essential amino acids taking into account their availability promotes a significant increase of live weight of weaners and piglets at growing by 9.9 % and at fattening – by 4.2 %, feed costs being reduced by 10.4–11.5 % in comparison with combined feeds calculated in accordance with the detailed regulations of feeding. Exchange energy costs per unit of protein deposited in the body of pigs are reduced by 14.4 %.