用大豆油部分替代日粮淀粉可提高断奶獭兔的生产性能。
Partially replacing dietary starch with soybean oil improved production performance of weaned Rex rabbits.
作者信息
Gong Ruiguang, Chen Yuan, Li Zhen, Zhang Rui, Song Bing, Wang Shuhui, Dong Xianggui, Ren Zhanjun
机构信息
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
出版信息
J Anim Sci. 2025 Jan 4;103. doi: 10.1093/jas/skae381.
The differences between the high-starch diet commonly used in rabbit farming and the natural feeding habits of rabbits may pose certain health risks. In our study, we replaced part of the starch in the feed with soybean oil and conducted a 4-wk feeding trial with weaned Rex rabbits. The results indicated that rabbits fed the oil-supplemented diet had a lower incidence of diarrhea, improved growth performance, and higher feed conversion efficiency, along with increased absorptive capacity of small intestine. Additionally, the composition of the cecal contents and fermentation patterns were altered; the concentration of ammonia in the cecum and the proportion of acetate among volatile fatty acids decreased, while the proportion of butyrate increased. Furthermore, the concentration of ammonia nitrogen in the cecum decreased, along with reductions in hepatic urea synthesis activity and urinary nitrogen excretion. These findings suggest that replacing part of the dietary starch with oil can enhance the production efficiency of Rex rabbits.
家兔养殖中常用的高淀粉日粮与家兔自然采食习性之间的差异可能会带来一定的健康风险。在我们的研究中，我们用大豆油替代了饲料中的部分淀粉，并对断奶獭兔进行了为期4周的饲养试验。结果表明，采食添加油脂日粮的家兔腹泻发生率较低，生长性能得到改善，饲料转化效率更高，同时小肠吸收能力增强。此外，盲肠内容物的组成和发酵模式发生了改变；盲肠中氨的浓度以及挥发性脂肪酸中乙酸的比例降低，而丁酸的比例增加。此外，盲肠中氨氮的浓度降低，同时肝脏尿素合成活性和尿氮排泄减少。这些研究结果表明，用油脂替代部分日粮淀粉可以提高獭兔的生产效率。
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