本文選題：蘇氨酸 + 雛鴨��； 參考：《動(dòng)物營(yíng)養(yǎng)學(xué)報(bào)》2017年06期

【摘要】：本試驗(yàn)旨在研究飼糧蘇氨酸水平對(duì)北京雛鴨生長(zhǎng)性能、胴體品質(zhì)、免疫機(jī)能和血清激素的影響。選取320只1日齡健康的北京鴨公鴨,隨機(jī)分為5組,每組8個(gè)重復(fù),每個(gè)重復(fù)8只。各組飼糧中蘇氨酸水平實(shí)測(cè)值分別為0.65%(對(duì)照)、0.69%、0.81%、0.88%和0.98%,試驗(yàn)期為21 d。結(jié)果表明:1)飼糧蘇氨酸水平對(duì)雛鴨平均日增重和平均日采食量有極顯著影響(P0.01),對(duì)照組雛鴨平均日增重和平均日采食量顯著低于其他各組(P0.05)。2)飼糧蘇氨酸水平對(duì)雛鴨胸肌率有顯著影響(P0.05),對(duì)照組雛鴨胸肌率顯著低于0.69%、0.81%、0.88%水平組(P0.05)。3)飼糧蘇氨酸水平對(duì)雛鴨法氏囊指數(shù)、脾臟指數(shù)、胸腺指數(shù)影響不顯著(P0.05)。飼糧蘇氨酸水平對(duì)雛鴨法氏囊重和胸腺重有極顯著影響(P0.01),對(duì)照組雛鴨法氏囊重顯著低于其他各組(P0.05),對(duì)照組雛鴨胸腺重顯著低于0.81%、0.88%水平組(P0.05)。4)飼糧蘇氨酸水平對(duì)雛鴨血清三碘甲腺原氨酸(T3)含量有顯著影響(P0.05),0.81%水平組的血清T3含量最高,顯著高于對(duì)照組和0.98%水平組(P0.05)。5)蘇氨酸需要量分別與平均日采食量、平均日增重和胸肌率呈二次曲線關(guān)系,并當(dāng)三者達(dá)到最高值時(shí)北京雛鴨的蘇氨酸需要量分別為0.860%、0.852%和0.837%。由此可見(jiàn),飼糧中添加適宜水平的蘇氨酸可提高雛鴨生長(zhǎng)性能、胴體品質(zhì)和免疫機(jī)能。
[Abstract]:The purpose of this study was to study the effects of dietary threonine on growth performance, carcass quality, immune function and serum hormones of Beijing ducklings. 320 healthy Beijing duck ducks were randomly divided into 5 groups with 8 replicates in each group. The measured values of threonine in diet of each group were 0.65 (0.690.690.81% and 0.98% respectively), and the experimental period was 21 days. The results showed that the dietary threonine level had a significant effect on the average daily gain and average daily intake of ducklings, while the average daily gain and average daily intake of the control group were significantly lower than those of the other groups. The breast muscle rate of the control group was significantly lower than that of the control group (0.69%, 0.88%), and the dietary threonine level had a significant effect on the bursa index of ducklings. The spleen index and thymus index had no significant effect on P0.05. Dietary threonine level had a significant effect on bursa weight and thymus weight of ducklings. The weight of bursa of the control group was significantly lower than that of other groups (P 0.05). The thymus weight of the control group was significantly lower than 0.88% of the control group (P 0.05N. 4) the dietary threonine level had a significant effect on ducklings. Serum triiodothyronine (T3) content had a significant effect on the serum T3 content in the group of 0.85% of P0.05 and 0.81%. The threonine requirement was significantly higher than that of the control group and 0.98% group (P 0.05 路5). The threonine requirement of Beijing ducklings was 0.860% 0.85 2% and 0.837%, respectively. It can be seen that the suitable level of threonine in diet can improve the growth performance, carcass quality and immune function of ducklings.
【作者單位】： 中國(guó)農(nóng)業(yè)科學(xué)院北京畜牧獸醫(yī)研究所動(dòng)物營(yíng)養(yǎng)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：中國(guó)農(nóng)業(yè)科學(xué)院鴨營(yíng)養(yǎng)與創(chuàng)新團(tuán)隊(duì) 國(guó)家“十三五”重點(diǎn)研發(fā)課題(2016YFD0700205,2016YFD0700201)
【分類(lèi)號(hào)】：S834.5

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