Effects Of Amino Acid Trace Mineral Chelates In Diets On Growth Performance, Blood Biochemical Indexes And Dietary Nutrient Utlization Of Pigs

This present study was conducted to investigate the effects on the growth performance, blood biochemical index and nutrient utilization rate among the growing pigs, sucking piglets and nursery pigs substituting different content of inorganic trace minerals(iOTM) with amino acid trace mineral chelates(AATMC) in diet.Experiment 1. 48 Duroc-Landrace-Yorkshire cross growing pigs about 28kg in body weigh(BW) were divided into four treatments randomly with three replicates per treatment and four pigs per replicate. AATMC: iOTM in diet were feeded in group 1(0%: 100%), group 2(12.5%: 75%), group 3(25%: 50%) and group 4(37.5%: 25%).The 56 days trial results showed that comparing with group 1, the average daily gain(ADG) of group 2,3 and 4 were increased by 9.85% (P<0.05) ,7.51% (P>0.05) and 1.34% (P>0.05) ,Feed: Gain (F/G)were decreased by 6.74% (P<0.05) ,7.45% (P<0.05) and 1.42% (P>0.05) ,feed cost for body weight gain in group 2,3 and 4 were 93.93% (P>0.05) ,94.37% (P>0.05 ) and 101.66% (P>0.05 ) apparent digestibilittes of Ca were significantly increased,the content of Fe,Zn and Cu in pig feces were significantly decreased, with no significance in blood index.Experiment 2. 24 littermates produced by 24 sows (Landrace-Yorkshire cross) with close litter numbers and births were divided into four treatments randomly with six replicates per treatment feeding same as Experiment 1. The 35 days trail results showed that comparing with group l, the average of body weight on 21d of group 2,3 and 4 were increased by 9.89% (P>0.05) , 3.62% (P>0.05) and 10.64% (P>0.05) , and that ADG on 0～21d were increased by 13.39% (P>0.05) , 4.72% (P>0.05) and 14.50% (P>0.05) , and that on 35d were increased by 2.11% (P>0.05) ,-1.51% (P>0.05) and 3.19% (P>0.05) ,survival rate were increased by 0.15%(P>0.05), 7.30%(P>0.05) and 7.33%(P>0.05), the content of Zn, Cu and Mn in pig feces were significantly decreased, with no significance in blood index.Experiment 3. 240 piglets of 35 days were divided into four treatments randomly with three replicates per treatment and 20 pigs per replicate feeding same as Experiment 1. The 35 days trial results showed that comparing with group 1, ADG in group2,3 and 4 were increased by 2.27% (P>0.05), 4.54% (P>0.05) and 2.27% (P>0.05), F/G were decreased by 2.72% (P>0.05) , 7.07% (P<0.05) and 1.91%(P>0.05), the content of Hg, Pb, As, Cd, Cr, Cu, CTC in pork and Cu in liver were lower than the standard content in non-pollution pork, with no significance in blood index. In summary, the results indicated that it's favourable to replace 37.5% AATMC with 75% iOTM in the diet of sucking piglets, and replace 25% AATMC with 50% iOTM in that of nursery pigs, and 12.5% AATMC with 25% iOTM in the growing pigs.