Research And Application Of Nutrition Optimization Technology In Pigs

In this study, growing pigs were used to study nutrition optimization technology in Pigs This research included five experiments:The first experiment was conducted to study effects of adding fat powder and increasing energy levels on growing performance in growing pigs.The second experiment was conducted to study effects of different lysine level on growth performance in growing pigs.The third experiment was conducted to study effects of bacillus subtilis on growth performance in growing pigs.The fourth experiment was conducted to study effects of different copper level on growth performance in growing pigs.The fifth experiment was conducted to study effects of low protein, low copper, no antibiotics on growth performance in growing pigs.The results showed that adding fat powder and increasing energy levels could increase performance(P<0.05) and decrease feed cost.Increasing lysine levels from 0.82% to 0.9% could increase performance and decrease feed cost.Adding 500g/t bacillus subtilis in diet had no significant affects on performance (P>0.05).50mg/kg copper had no significant affects on performance compared with 150 mg/kg copper in diet (P>0.05)Technology of low protein,low copper and no antibiotics diet in growing pigs were as follows:(1) Crude protein was reduced 2% compared with high protein diet,the protein level was 14.5%.(2)The lysine,sulfur amino acid,threonine and tryptophan level were respectively 0.90%,0.51%,0.59% and 0.17%.(3) The copper level was 20 mg/kg.(4) The no antibiotics diet added 500 mg/kg bacillus subtilis...