提高日粮能量、赖氨酸及蛋白质水平对高产哺乳母猪和仔猪生产性能的影响

Effects of production performance in lactation sows and piglets by improving dietary energy and lysine and protein levels

本研究通过提高哺乳母猪日粮的能量、赖氨酸及蛋白质水平，探讨其对现代高产型母猪和哺乳仔猪生产性能的影响。试验选取分娩日期相近的3-6胎妊娠后期母猪（长×大）26头，按胎次、体重、膘情随机分成2组，每组13个重复。对照组和试验组的日粮粗蛋白质水平分别为16.20%和18.52%，代谢能水平分别为13.15 MJ/kg和13.81 MJ/kg，回肠标准可消化赖氨酸（SID-LYS）含量分别为0.8%和0.88%。试验期为预产期前15 d至产后21 d。试验结果表明：试验组母猪在整个试验期的背膘损失比对照组少36%（0.05＜P＜0.1），产程比对照组缩短34.49%（P＜0.01）；试验组仔猪断奶均重比对照组高10.29%（0.05＜P＜0.1），平均日增重比对照组高14.52%（P＜0.05）。由此可见，提高日粮能量、赖氨酸及蛋白质水平能够改善哺乳母猪繁殖性能和提高仔猪生长性能。

This study discussed the effect of improving the energy,lysine and protein levels in lactation sow diets on production performance in modern hyperprolific sows and piglets.A total of 26 pregnancy sows （Landrace×Yorkshire）with similar farrowing date and 3 - 6 births were selected and randomly divided into 2 groups according to parity,body weight and body condition,resulting in 13 repetitions in each group.The crude protein （CP） content and metabolizable energy （ME） levels in diets of control and test group were respectively 16.20%,13.15 MJ/kg and 18.52%,13.81MJ/kg.The stan-dardized ileal digestible lysine （SID-LYS）content was 0.8%and 0.88%,respectively.This trial started from 15 days before the due date to postpartum 21 days.The results showed that the backfat loss of the test group was 36%less than that of the control group（0.05〈P〈0.1）,and labor duration was 34.49%shorten than that of the control group（P〈0.01）.Compared with the control group,weaning weight of the test group piglets was 10.29% elevated （0.05 〈 P 〈 0.1）,and average daily gain （ADG） was 14.52%increased（P〈0.05）.The results indicated that increasing dietary energy,lysine and protein lev-els could improve the production performance of lactation sows and nursing piglets.