本文選題：亞油酸 + 鵝��； 參考：《動(dòng)物營(yíng)養(yǎng)學(xué)報(bào)》2016年11期

【摘要】：本試驗(yàn)旨在研究亞油酸對(duì)5~16周齡肉鵝生長(zhǎng)性能、屠宰性能、肌肉品質(zhì)和營(yíng)養(yǎng)物質(zhì)利用率的影響,以確定飼糧亞油酸的適宜水平。試驗(yàn)選用5周齡五龍鵝360只,隨機(jī)分為6組,每組6個(gè)重復(fù),每個(gè)重復(fù)10只(公母各占1/2)。6組(Ⅰ~Ⅵ組,Ⅰ組為對(duì)照組)飼糧中亞油酸水平分別為0.52%、0.72%、0.92%、1.12%、1.32%、1.52%。試驗(yàn)期12周。結(jié)果表明:1)Ⅲ、Ⅳ組體重、平均日增重顯著或極顯著高于對(duì)照組(P0.05或P0.01),料重比(F/G)顯著低于對(duì)照組(P0.05)。2)采用不相關(guān)比較法進(jìn)行分析,飼糧中亞油酸水平為1.09%時(shí)屠宰率最高。Ⅳ、Ⅴ組胸肌率顯著高于對(duì)照組(P0.05),Ⅲ、Ⅳ組腹脂率顯著或極顯著低于對(duì)照組(P0.05或P0.01)。3)Ⅲ~Ⅵ組肌肉亮度(L*)值顯著或極顯著高于對(duì)照組(P0.05或P0.01);Ⅳ組肌肉紅度(a*)值極顯著高于對(duì)照組(P0.01),失水率和剪切力顯著或極顯著低于對(duì)照組(P0.05或P0.01);Ⅳ~(yú)Ⅵ組p H顯著高于對(duì)照組(P0.05)。4)Ⅳ組粗蛋白質(zhì)、粗脂肪和鈣的利用率極顯著高于對(duì)照組(P0.01)。Ⅱ~Ⅵ組磷利用率顯著高于對(duì)照組(P0.05)。Ⅲ~Ⅵ組糞便氮排泄量顯著或極顯著低于對(duì)照組(P0.05或P0.01),沉積氮和氮的利用率顯著或極顯著高于對(duì)照組(P0.05或P0.01)。由此可見(jiàn),飼糧中適宜水平的亞油酸能夠提高5~16周齡肉鵝的生長(zhǎng)性能、屠宰性能、肌肉品質(zhì)和營(yíng)養(yǎng)物質(zhì)利用率,并降低腹脂率。5~16周齡肉鵝飼糧中亞油酸的適宜水平為0.92%~1.12%。
[Abstract]:The purpose of this experiment was to study the effects of linoleic acid on the growth performance, slaughter performance, muscle quality and nutrient utilization rate of meat geese at the age of 5 ~ 16 weeks, in order to determine the appropriate level of linoleic acid in diet. 360 five-week-old Wulong geese were randomly divided into 6 groups, 6 repeats in each group, 10 replicates (1 / 2 male and female, 1 / 2) group (鈪，

本文編號(hào)：2090020