本文選題：日增重 + 體尺指標(biāo)��； 參考：《畜牧與獸醫(yī)》2017年05期

【摘要】：將20只健康、體重相近的7月齡灘母羊隨機(jī)分為5組,進(jìn)行單籠飼養(yǎng),設(shè)計(jì)5種不同營(yíng)養(yǎng)水平的日糧分別飼喂5組育成母羊,來探究日糧營(yíng)養(yǎng)水平對(duì)育成期灘母羊生長(zhǎng)發(fā)育的影響。結(jié)果表明:試驗(yàn)Ⅳ組的增重最快,其平均日增重最高達(dá)(127.22 g/d);育成羊隨著年齡的增長(zhǎng),體重增長(zhǎng)速度下降。在本試驗(yàn)條件下,隨著日糧營(yíng)養(yǎng)水平的提高,育成灘母羊的總增重、平均日增重、干物質(zhì)采食量均顯著增加(P0.05),而料重比不斷下降。各試驗(yàn)組羊只的體長(zhǎng)、體高和管圍的變化無顯著性差異(P0.05),而胸圍的增長(zhǎng)幅度有顯著性差異(P0.05)。結(jié)合日增重、體尺指標(biāo)、生產(chǎn)性能、經(jīng)濟(jì)效益等指標(biāo),可知試驗(yàn)Ⅳ組的營(yíng)養(yǎng)水平(CP:15.94%,ME:10.18 MJ/kg)能顯著改善羊只生長(zhǎng)發(fā)育,提高生產(chǎn)性能,獲得最高的經(jīng)濟(jì)效益。
[Abstract]:Twenty healthy 7-month-old Sheep were randomly divided into 5 groups, which were raised in a single cage. Five diets with different nutritional levels were designed to feed 5 groups of ewe.To explore the effect of dietary nutrition level on the growth and development of beach ewe.The results showed that the weight gain of group 鈪，

本文編號(hào)：1764300