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

The study was conducted to investigate the effects of substituting amino acid trace mineral chelates(AATMC)for different content of inorganic trace minerals(IOTM)in corn-soybean diets on the growth perfomaance,blood biochemical index and dietary nutrient utilization rate for broilers.Three hundred and sixty one-day-old chickens(female)were randomly divided into 6 groups each with 6 replications and 10 per replicate.The experiment lasted 63d with two-phase(1-4week,5-9week).The Fe,Cu,Mn,Zn in diet of group 1 was FeSO₄,CuSO₄,MnSO₄,ZnO,the levels were Fe100mg / kg,Cu20mg / kg,Mn120mg / kg,Zn120mg / kg.Group2,3,4,5 were Substituting 12.5%,25.0%,37.5%and50.0%AATMCfor25%,50%,75%å’Œ100% IOTM(1:2)in diets respectively.Group 6 was Substituting 50.0%AATMC for50%IOYM(1:1).The results showed as follows:1 Compared with group 1,average daily gain(ADG)of group 2,3,4,5,6 in 1-4 weeks periods increased by 1.71%(P＞0.05),0.61%(P＞0.05),6.55% (P＜0.05),1.71%(P＞0.05)and 6.06%(P＜0.05)respectively,and feed conversion ratio(F/G)were not significantly affected among groups(P＞0.05);while there are not significant differences in ADG and F/G among groups(P＞0.05).ADG of group 2,3,4,5,6 in 1-9 weeks periods increased by0.77%(P＞0.05),1.62%(P＞0.05),4.28%(P＞0.05),0.77% (P＞0.05)and 3.11%(P＞0.05),and F/G decreased by 2.65%(P＞0.05), 1.77%(P＞0.05),1.33%(P＞0.05),1.33%(P＞0.05)and0.88%(P＞0.05) respectively compared with group 1,but there were not significant differences among groups.2 Compared with group 1,the apparent digestibility of crude protein (CP),ether extract(EE)and P in group 2,3,4,5,6 tended to increase,but there were not significant differences among groups;the apparent digestibility of Ca increased by 7.15%(P＞0.05),12.02%(P＞0.05),18.87%(P＜0.05), 11.82%(P＞0.05)and 7.07%(P＞0.05)respectively.3 There were not significant differences among groups in the slaughter performance,the meat quality,the immunity organ indexes of broiler (P＞0.05)4 There were not significant differences among groups in ALP,LDH,TP, ALB,Glo,A/G and IgM in serum(P＞0.05)5 The results of the analysis of minerals indicated that,(1)Minerals in feces,There were not significant differences among groups in Zn,While compared with group 1,Cu in group 3,4,5 decreased significantly(P＜0.05), Mn in group 4,5 decreased significantly(P＜0.05)and Fe in group 4 decreased significantly(P＜0.05).(2)Minerals in Brisket,There were not significant differences among groups in Cu and Fe,While Compared with group 1,Zn and Mn in group 3,4,5,6 can increased significantly(P＜0.05). (3)Minerals in liver,There were not significant differences among groups in Cu,Zn and Mn,While Compared with group 1,Fe in group 4,5,6 can increased significantly(P＜0.05)(4)Minerals in serum,There were not significant differences among groups in Cu,Zn and Mn in serum(P＞0.05).In summary,the results of the experiment indicated that there was feasible in corn-soybean diets for broilers of 1-4 weeks-old substituting amino acid trace mineral chelates(AATMC)for different content of inorganic trace minerals(IOTM),it's favourable to replace 75%IOTM with37.5%AATMC. It can increase the growth performance and decrease the pollution to environment.