COMPARISON OF EFFECTIVENESS OF DIFFERENT COPPER FOOD ADDITIVES IN FEEDING FOR LACTATING SOWS AND THEIR SUCKING PIGLETS
The effectiveness of Copper food additives by three types (salt, chelate and pro-humate) in feeding for lactating sows and their sucking piglets had been compared. Copper pro-humate (in dose to make 20 % compensation of Copper deficit in the ration) showed better results than the Copper salt type (in dose to make 100 % compensation of Copper deficit) and both chelate doses (for 50 % and 20 % compensation of Copper deficit).