摘要
试验旨在研究不同梯度发酵豆粕等量替代普通豆粕对育肥猪生长性能、胴体性状及肉品质的影响。采用单因素完全随机试验设计,选择240头初始体重(61.25±2.31) kg的"杜×长×大"育肥猪,随机分为6组,每组8个重复,每个重复5头猪。对照组育肥猪饲喂玉米-豆粕型基础日粮,5个试验组依次采用5%、7%、9%、11%、13%发酵豆粕等量替代普通豆粕。试验期60 d。结果显示,与对照组相比,除试验1组外,其他试验组育肥猪末重均显著升高(P<0.05),平均日增重均极显著升高(P<0.01);试验1组育肥猪平均日增重显著升高(P<0.05),试验1组、试验2组、试验4组和试验5组的料重比均显著降低(P<0.05),试验3组料重比极显著降低(P<0.01);试验2组、试验3组、试验4组和试验5组宰前活重、胴体重均显著提高(P<0.05);试验3组背膘厚度显著降低(P<0.05),眼肌面积显著升高(P<0.05);试验3组和试验4组系水力显著升高(P<0.05),24 h滴水损失显著降低(P<0.05);试验3组蒸煮损失和肌肉剪切力均显著降低(P<0.05);各试验组肌肉中蛋白质含量均显著高于对照组(P<0.05)。研究表明,9%发酵豆粕等量替代玉米-豆粕型基础日粮中的普通豆粕,可以增强育肥猪的生长性能,有效改善胴体性状和肉品质。
The experiment studied the effect of different gradient fermented soybean meal replacing ordinary soybean on growth performance, carcass trait and meat quality in finishing pigs. 240 ’Duroc×Landrace×Yorkshire’ finishing pigs with initial weight(61.25±2.31) kg were randomly divided into six groups, with eight replicates in each group and five pigs in each replicate. The control group was fed with corn-soybean meal basal diet, five experimental groups adopted 5%, 7%, 9%,11%, 13% fermented soybean meal to replace ordinary soybean meal in diet. The experimental period was 60 d. The results showed that compared with the control group, the final weight of fattening pigs in each experimental group except group 1 was significantly increased(P<0.05), and the average daily weight gain was extremely increased(P<0.01). The average daily gain in group 1 was significantly increased(P<0.05), the feed to gain ratios in group 1, group 2, group 4 and group 5 were significantly decreased(P<0.05), and the feed to gain ratio in group 3 was extremely decreased(P<0.01). The live weight and carcass weight before slaughter in group 2, group 3, group 4 and group 5 were significantly increased(P<0.05). The backfat thickness was significantly decreased(P<0.05), and the eye muscle area was significantly increased in the three groups(P<0.05). The hydraulic power of group 3 and group 4 was significantly increased(P<0.05), and the drip loss at 24 h was significantly decreased(P<0.05). The cooking loss and muscle shear force in group 3 were significantly decreased(P<0.05).The protein content in the muscle in each experimental group was significantly higher than that in control group(P<0.05).The study indicates that 9% fermented soybean meal equivalent to replace ordinary soybean meal in corn-soybean meal basal diet can improve the growth performance, carcass traits and pork quality of finishing pigs.
作者
关红民
王佳
贺军
郑万来
张玺
张洁慧
魏瑞
GUAN Hong-min;WANG Jia;HE Jun;ZHENG Wan-lai;ZHANG Xi;ZHANG Jie-hui;WEI Rui
出处
《饲料研究》
CAS
北大核心
2022年第2期22-26,共5页
Feed Research
基金
2021年甘肃省高等学校创新基金项目(项目编号:2021B-445)。
关键词
育肥猪
发酵豆粕
生长性能
胴体性状
肉品质
finishing pigs
fermented soybean meal
growth performance
carcass trait
meat quality
作者简介
第一作者:关红民,硕士,副教授,研究方向为猪的营养与饲料;通信作者:王佳,大学,高级兽医师。
