Effects of different levels of small peptide-chelated iron on growth performance,blood routine indices,and immune function in weaned piglets
WANG Shuanglong
LU Linghua
WANG Xiaoping
Abstract：This study aimed to investigate the effects of dietary supplementation with different levels of small peptide-chelated iron on the growth performance,blood routine indices,and immune function in weaned piglets.A total of 240 healthy 21-day-old weaned piglets were randomly assigned to four groups with six replicates per group,10 piglets per replicate.Piglets in the control group were fed a corn-soybean meal basal diet,and piglets in the test groups were fed diets supplemented with 50(test group 1),100(test group 2)and 200 mg/kg(test group 3)small peptide-chelated iron,respectively.The pre-test period was 1 week and the formal test period was 4 weeks.The results showed that compared to the control group,the number of red blood cells in the blood in test group 2 was significantly increased(P＜0.05),the hematocrit in test groups 1 and 2 was significantly increased(P＜0.05),the hemoglobin concentration in test groups was significantly increased(P＜0.05),and the average volume of red blood cells in test groups 2 and 3 was significantly increased(P＜0.05).Compared with the control group,the serum immunoglobulin A(IgA)and immunoglobulin G(IgG)concentrations in test groups 2 and 3 were significantly increased(P＜0.05),and the serum immunoglobulin M(IgM)and CD8+lymphocyte concentrations in experimental groups were significantly increased(P＜0.05).Serum interleukin-10(IL-10)and CD4+lymphocyte concentrations in test group 2 were significantly increased(P＜0.05).Compared with control group,the serum ferritin content in experimental groups was significantly increased(P＜0.05).The results show that dietary supplemented with appropriate amount of small peptide-chelated iron can improve the growth performance and immunity of piglets,and the best effect is when the level of small peptide-chelated iron is 100 mg/kg.
Keywords：small peptide-chelated ironweaned pigletsgrowth performanceimmune functionblood routine indices
Publication Date：2025-03-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 38-42 )