摘要
该文旨在研究利用净能体系配制低蛋白质日粮对商业条件下生长和育肥猪生长性能和胴体品质及肉品质的影响。生长阶段(试验1)与育肥阶段(试验2)分别选择杜洛克×长白×大约克三元杂交生长猪(30～55kg)和育肥猪(50～100kg)各216头,随机分为正常蛋白质组和低蛋白质组2个组,每组6个重复,每个重复18头,试验2结束后每组选30头育肥猪进行屠宰。结果表明,低蛋白质组生长猪和育肥猪的平均日增重、平均日采食量和料重比与正常蛋白质组相比差异均不显著(P>0.05),生长猪增重成本降低6.80%/kg(P<0.05),育肥猪增重成本降低9.49%/kg(P<0.05);除失水率显著高于正常蛋白质组外(P<0.05),低蛋白质组育肥猪胴体品质和肌肉品质与正常蛋白质组相比,差异均不显著(P>0.05)。综上所述,商业化条件下,利用净能体系配制生长和育肥猪低蛋白质日粮可获得与传统日粮相近的生产性能、胴体品质和肌肉品质,增重成本能够显著下降。
The aim of this study was to investigate the growth performance of growing and finishing pigs,and carcass characteristic and meat quality of finishing pigs fed with low crude protein （CP） diet formulated by net energy system in commercial pig farm. In the growing （experiment 1） and finishing stage （experiment 2）,two hundred and sixteen Duroc×Landrace×Yorkshire growing （30-55 kg） and finishing pigs （50-100 kg） were all randomly allocated to 2 groups of a low CP diet and a normal CP diet group,respectively （each group 6 replicates and 18 pigs per replicate）. Thirty finishing pigs were slaughtered when experiment 2 finished. The results showed that average day gain,average day feed intake,and F/G of growing and finishing pigs received the low CP diet were all significantly lower when compared with normal CP group （P〉0.05）; but the cost of each increased kilogram weight of growing pigs was significantly decreased by 6.80%/kg compared with the pigs received the normal CP diet （P〈0.05）,and that of finishing pigs was significantly decreased by 6.80%/kg （P〈0.05）. Except that water loss rate of low CP diet group was significantly higher than that of normal CP group （P〈0.05）,carcass characteristics and meat qualities in low CP diet group had no significant difference compared with that in normal CP group （P〉0.05）. In conclusion,low CP diet formulated by the net energy system in commercial pig farm could achieve similar performance for growing or finishing pigs and carcass characteristic and meat qualities for finishing pigs compared with normal CP diet,and decrease cost of per increased kilogram weight.
出处
《动物营养学报》
CAS
CSCD
北大核心
2010年第3期557-563,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家"十一五"科技支撑计划课题(2006BAD12B02)
动物营养需要动态模型技术研究(2006BAD12B02)
关键词
净能
生长猪
育肥猪
低蛋白质日粮
肉品质
胴体品质
Net energy
Growing pigs
Finishing pigs
Low crude protein diet
Meat quality
Carcass characteristic
