本文選題：賴氨酸　切入點：京紅號　出處：《動物營養(yǎng)學報》2017年04期

【摘要】：本試驗旨在研究5~8周齡京紅1號蛋雞飼糧賴氨酸(Lys)的需要量。選取4周齡末京紅1號蛋雞母雛360只,隨機分為5組,每組6個重復,每個重復12只雞。飼糧Lys水平分別為0.70%、0.84%、0.98%、1.12%和1.26%,試驗期4周。結果表明:0.84%Lys組蛋雞平均日增重、8周齡體重和群體均勻度均顯著高于1.26%Lys組(P0.05)。0.98%和1.12%Lys組的體格發(fā)育顯著優(yōu)于1.26%Lys組(P0.05)。0.98%和1.12%Lys組的十二指腸重、空腸長顯著高于0.70%和1.26%Lys組(P0.05)。0.84%Lys組胸腺指數顯著高于0.98%、1.12%和1.26%Lys組(P0.05);0.84%、0.98%和1.12%Lys組法氏囊指數顯著高于其他組(P0.05)。0.84%、0.98%和1.12%Lys組血清總蛋白和白蛋白含量顯著高于0.70%和1.26%Lys組(P0.05);0.98%Lys組血清尿素氮和尿酸含量顯著低于1.26%Lys組(P0.05);0.84%Lys組血清堿性磷酸酶活性和血漿生長激素含量均顯著高于0.70%Lys組(P0.05)。根據8周齡雞體重、群體均勻度、全凈膛重、屠體重、心臟指數、肝臟指數、脛長、十二指腸重及血清尿酸含量等指標,各自擬合二次曲線,得出最佳飼糧Lys水平分別為0.906%、0.888%、0.931%、0.928%、0.889%、0.902%、0.902%、1.071%和0.958%。綜上,推薦5~8周齡京紅1號蛋雞飼糧Lys需要量為0.93%。
[Abstract]:The purpose of this study was to study the dietary lysine Lys1 requirement of 5 ~ 8 weeks old Jinghong 1 laying hens.360 female chicks of Jinghong No. 1 layer at the end of 4 weeks old were randomly divided into 5 groups with 6 replicates in each group and 12 chickens in each replica.The dietary Lys levels were 0.70% 0.84% and 1.26%, respectively. The experiment period was 4 weeks.The content of nitrogen and uric acid was significantly lower than that of 1.26%Lys group (P 0.05) and plasma growth hormone (GH) content was significantly higher than that of 0.70%Lys group (P 0.05).In conclusion, the recommended dietary Lys requirement of 5 ~ 8 weeks old Jinghong No. 1 laying hens was 0.93kW.
【作者單位】： 中國農業(yè)科學院飼料研究所農業(yè)部飼料生物技術重點開放實驗室生物飼料開發(fā)國家工程研究中心;
【基金】：基金項目:現代農業(yè)產業(yè)技術體系(CARS-41-K13) 家禽產業(yè)技術體系北京市創(chuàng)新團隊(CARS-PSTP)
【分類號】：S831.5
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本文編號：1725998