Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
Meat Sci. 2012 Jan;90(1):66-70. doi: 10.1016/j.meatsci.2011.06.004. Epub 2011 Jun 12.
This study investigated the effects of dietary digestible energy (DE) concentration (3.20, 3.40, 3.60 & 3.80 M cal/kg) on growth, meat quality, and PPARγ gene expression in muscle and adipose tissues of Rongchang piglets. There was a quadratic increase in average daily gain and a linear decrease in the ratio of feed intake and gain as dietary DE increased (P<0.05). Increasing dietary DE resulted in a linear increase of back fat thickness and intramuscular fat content (P<0.05). A significant linear or quadratic effect (P<0.01) was detected for shearing force. Increasing dietary DE linearly enhanced the expression of PPARγ in adipose tissues (P<0.01). These data suggest that dietary DE had an impact on carcass and meat quality of Rongchang piglets. This could be partly due to the increased gene expression of PPARγ in adipose tissues, which may regulate the fat deposition of whole body.
本研究旨在探讨饲粮消化能（DE）浓度（3.20、3.40、3.60 和 3.80 兆卡/千克）对荣昌仔猪生长性能、肉品质和肌肉及脂肪组织中过氧化物酶体增殖物激活受体γ（PPARγ）基因表达的影响。结果表明：随着饲粮 DE 的增加，平均日增重呈二次增加，而料重比呈线性降低（P＜0.05）。饲粮 DE 的增加导致背膘厚和肌内脂肪含量呈线性增加（P＜0.05）。剪切力呈显著的线性或二次效应（P＜0.01）。饲粮 DE 呈线性增加脂肪组织中 PPARγ 的表达（P＜0.01）。这些数据表明，饲粮 DE 对荣昌仔猪的胴体和肉质有影响。这可能部分是由于脂肪组织中 PPARγ 基因表达的增加，这可能调节全身脂肪沉积。
