Application Of Small Peptide Complex Copper, Iron, Manganese, Zinc And Selenium Yeast In Nursery Pigs

In this study, 144 of 38 days old Yorkshire nursery pigs were randomly assigned to three groups using single factor experiment design with three replicates and 16 piglets(half females and half castrated males) each replicate. Three groups were fed basal diet containing inorganic copper, iron, manganese, zinc and selenium(Fe 100 mg/kg, Zn 100 mg/kg, Mn 20 mg/kg, Cu 20 mg/kg, Se 0.4 mg/kg), small peptide complex copper, iron, manganese, zinc and selenium yeast and inorganic copper, iron, manganese and zinc(small peptide complex iron and inorganic iron per 50 mg/kg, small peptide complex zinc and inorganic zinc each 50 mg/kg, inorganic manganese 4 mg/kg, inorganic copper 6 mg/kg, selenium yeast 0.4 mg/kg), small peptide complex copper, iron, manganese, zinc and selenium yeast(Fe 100 mg/kg, Zn 100 mg/kg, Mn 4 mg/kg, Cu 6 mg/kg, Se 0.4 mg/kg). Preliminary trial period was 5 days, the formal experiment lasted for 20 days. The effects of small peptided complex copper, iron, manganese, zinc and selenium yeast on the growth performance, blood physiological-biochemical index, and the content of copper, iron, manganese, zinc and selenium in liver, kidney, spleen, pancreas, longissmus dorsi muscle, serum, fecal of nursery pigs, and the appropriate dose of small peptides complex trace minerals were studied. The data will provide a theoretical basis for applying small peptides complex trace minerals in livestock production.(1)Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on growt h performance of nursery pigsCompared with control, feed:gain(F/G) of group 1 and group 2 was tending to decrease(1.21% and 1.82%)(P=0.094), average daily feed intake(ADFI) and average daily gain(ADG) of group 1 and group 2 were tending to increase(6.17% and 3.14%)(P=0.083)and ADG(5.31% and1.31%)(P=0.091), respectively.(2) Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on serum biochemical parameters of nursery pigsCompared with control and group 1, serum glutathione peroxidase of group 2 was significantly increased by 8.55% and 8.25%(P<0.01), respectively, serum total protein of group 2 was significantly increased by 13.34%(P<0.05). Serum alkaline phosphatase(P=0.069), ceruloplasmin(P=0.057), Cu-Zn-superoxide dismutase(P=0.064), Mn-superoxide dismutase(P=0.061) of group 1 and group 2 were tending to increase. No treatment effect was observed in others(P>0.05).(3)Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on blood physiological parameters of nursery pigsBlood leukocyte number(P=0.055), neutrophil ratio(P=0.089), lymphocyte number(P=0.067), lymphocyte rate(P=0.059), hemoglobin content(P=0.054), erythrocyte number(P=0.052) and hematocrit number(P=0.093) of group 1 and group 2 were tending to increase, no treatment effect was observed in other parameters(P>0.05).(4)Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on content of Cu, Fe, Mn, Zn and Se in serum in nursery pigsCompared with control, the content of serum copper(P=0.088), iron(P=0.072), zinc(P=0.058) and selenium(P=0.071) of group 1 and group 2 were tending to increase. No treatment effect was observed in the content of serum manganese(P>0.05).(5)Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on content of Cu, Fe, Mn, Zn and Se in liver, kidney, spleen, pancreas and longissimus dorsi muscle in nursery pigsCompared with control, the content of liver copper(P=0.063), iron(P=0.053), zinc(P=0.055) and selenium(P=0.084) of group 1 and group 2 was tending to increase; Kidney selenium content of group 2 was significantly increased by 40.63%(P<0.01), the content of kidney copper(P=0.083), iron(P=0.067) and manganese(P=0.075) of group 1 and group 2 were tending to increase; Spleen selenium content of group 2 was significantly increased by 40.19%(P<0.01); the content of spleen copper(P=0.057), iron(P=0.055), zinc(P=0.055) and manganese(P=0.054) of group 1 and group 2 was tending to increase; Pancreas manganese content of group 2 was significantly increased by 55.90%(P<0.01), pancreas manganese content of group 1 was increased by 27.85%(P<0.05), the content of pancreas copper(P=0.052), zinc(P=0.067) and selenium(P=0.086) of group 1 and group 2 was tending to increase; Longissimus dorsi muscle selenium content of group 2 was significantly increased by 47.56%(P<0.01), the content of longissimus dorsi muscle copper(P=0.067), iron(P=0.056) and zinc(P=0.051) of group 1 and group 2 was tending to increase.(6)Effect of small peptide complex Cu, Fe, Mn, Zn and selenium yeast on content of fecal Cu, Fe, Mn, Zn and Se in nursery pigsCompared with control, fecal manganese content of group 2 was significantly decreased by 9.93%(P<0.05), and the content of fecal copper(P=0.072), iron(P=0.067), zinc(P=0.059) and selenium(P=0.070) of group 1 and group 2 was tending to decrease.In conclusion, small peptides chelated Cu, Fe, Mn, Zn and selenium yeast at some dosage increased performance, metabolism of Cu, Fe, Mn, Zn and Se s and reduced the conte nt of Cu, Fe, Mn, Zn and Se in nursery pigs, and the effects of complete small peptides complex Cu, Fe, Mn, Zn and selenium yeast were better than those of partial complex Cu, Fe, Mn, Zn and selenium yeast.