饲料研究2025，Vol.48Issue(15)：25-30,6.DOI:10.13557/j.cnki.issn1002-2813.2025.15.005
低蛋白饲粮补充赖氨酸对仔猪生长性能和血清指标的影响
Effects of low-protein diets supplemented with lysine on growth performance and serum indexes of piglets
摘要
Abstract
The experiment aimed to investigate the effects of low-protein diets supplemented with lysine on the growth performance,serum biochemical indicators,antioxidant capacity,and amino acid content of piglets.A total of 150'Duroc × Landrace × Yorkshire' piglets with a weight of(19.40±0.54)kg were selected and randomly divided into six groups,with five replicates per group and five piglets per replicate.A 3 × 2 factorial experimental design was adopted to feed diets with different crude protein levels(16.50％,17.50％and 18.50％)and lysine levels(1.32％and 1.25％).By adjusting the addition amount of restrictive amino acids,the ratio of methionine+cysteine,threonine,tryptophan and valine to lysine in the diet was fixed at 0.56,0.68,0.16 and 0.63,respectively.The pre-test period was three days and the formal test period was 25 days.The results showed that compared with the crude protein 17.50％group,total protein,globulin and urea nitrogen concentrations in serum of crude protein 16.50％group were significantly decreased(P＜0.05),while the total protein content of crude protein 18.50％group was significantly reduced(P＜0.05),and the serum urea nitrogen content was significantly increased(P＜0.05).Compared with the crude protein 17.50％group,the serum total superoxide dismutase and glutathione peroxidase activities in crude protein 16.50％and 18.50％groups were significantly reduced(P＜0.05).Compared with the protein 17.50％group,the arginine,leucine,phenylalanine,aspartic acid and alanine concentrations in the crude protein 16.50％and 18.50％groups were significantly reduced(P＜0.05).The study indicates that supplementation with lysine can achieve the same growth performance in piglets with crude protein 17.50％group as in those with crude protein 18.50％group,while having little effect on the growth performance of piglets with protein 16.50％group.关键词
仔猪/蛋白质/赖氨酸/生长性能/血清指标Key words
piglets/protein/lysine/growth performance/serum indexes分类
农业科技引用本文复制引用
丁晓,赵小刚,郭吉余,万发春..低蛋白饲粮补充赖氨酸对仔猪生长性能和血清指标的影响[J].饲料研究,2025,48(15):25-30,6.基金项目
广东省养猪与猪病防控技术研究企业重点项目(项目编号:2020B1212070023) （项目编号:2020B1212070023）
