PDF(Pubmed)
Abstract：
Considering the frequently large price fluctuations for soybean meal, an alternative is the increased use of locally produced high-protein ingredients. The objective of this study was to evaluate the effects of the total replacement of soybean meal with different sources of protein on the growth performance, nutrient digestibility, serum parameters, rumen fermentation parameters, and bacterial communities in growing lambs. Sixty sheep with similar body weights (38.46 ± 0.71 kg) were distributed to one of five treatments: soybean meal (SBM); cottonseed meal (COM); peanut meal (PEM); rapeseed meal (RAM); and distillers\' dried grains with solubles (DDGS). The experiment lasted 62 days with a 10-day adaptation period and a 52-day growing period. The results indicated that the body weight and average daily gain were not affected by different protein sources (p > 0.05), but the dry matter intake of the SBM group was lower than that of the other groups (p < 0.05); otherwise, the feed efficiency was higher (p < 0.05). The digestion of dry matter was higher in the SBM, COM, and RAM groups than in the DDGS and PEM groups (p < 0.05). Meanwhile, compared to the other groups, the SBM group had the highest digestion of gross energy and crude protein (p < 0.05). In addition, the concentration of glutathione peroxidase was highest in the SBM group (p < 0.05). Regarding the rumen fermentation, the SBM group had the highest concentration of NH3-N (p < 0.05). The rumen bacterial community was not affected by treatments (p > 0.05). In conclusion, the total replacement of soybean meal with cottonseed, peanut, rapeseed, or DDGS reduced digestibility but did not impact the body weight or average daily gain of growing lambs and had no effect on the immune function and rumen bacterial community; thus, they can be used to substitute the soybean meal.
摘要：
考虑到豆粕价格经常大幅波动，另一种选择是增加使用本地生产的高蛋白成分。本研究的目的是评估用不同来源的蛋白质完全替代豆粕对生长性能的影响。营养素消化率，血清参数，瘤胃发酵参数,和正在生长的羔羊身上的细菌群落。将60只体重相似（38.46±0.71kg）的绵羊分配到以下五种处理之一：大豆粉（SBM）；棉籽粉（COM）；花生粉（PEM）；菜籽粉（RAM）；和酒糟干谷物（DDGS）。实验持续62天，适应期为10天，生长期为52天。结果表明，不同蛋白质来源对体重和平均日增重的影响不大（p>0.05）。但SBM组的干物质摄入量低于其他组(p<0.05)；否则，饲料效率较高(p<0.05)。SBM中干物质的消化率较高，COM,和RAM组高于DDGS和PEM组(p<0.05)。同时,与其他群体相比，SBM组的总能量和粗蛋白消化率最高(p<0.05)。此外,SBM组谷胱甘肽过氧化物酶浓度最高(p<0.05)。关于瘤胃发酵，SBM组的NH3-N浓度最高(p<0.05)。瘤胃细菌群落不受处理影响(p>0.05)。总之,用棉籽代替豆粕，花生,油菜籽,或DDGS降低消化率，但不影响生长羔羊的体重或平均日增重，对免疫功能和瘤胃细菌群落没有影响；因此，它们可以用来代替豆粕。
