本文關鍵詞： 過瘤胃保護甜菜堿 過瘤胃保護膽堿 生長性能 消化性能 屠宰性能 脂肪沉積　出處：《動物營養(yǎng)學報》2017年05期 　論文類型：期刊論文

【摘要】：本試驗旨在研究過瘤胃保護甜菜堿(RPB)和過瘤胃保護膽堿(RPC)對1~3月齡湖羊生長性能、消化性能、屠宰性能和脂肪沉積的影響。試驗選用30只體重相近的1月齡左右的湖羊公羔,隨機分成3組,分別為對照組、RPB組和RPC組,每組10只。對照組飼喂基礎飼糧,RPB組和RPC組則飼喂在基礎飼糧干物質(zhì)(DM)基礎上分別添加2.9 g/kg RPB和2.5 g/kg RPC的試驗飼糧。預試期21 d,正試期54 d。結果表明:1)飼糧中添加RPB和RPC對1~3月齡湖羊的平均日增重、平均日采食量和料重比均無顯著影響(P0.05),但RPB組、RPC組的平均日增重較對照組分別增加了19.97%和27.75%。2)飼糧中添加RPB和RPC對1~3月齡湖羊的粗蛋白質(zhì)(CP)、中性洗滌纖維(NDF)、酸性洗滌纖維(ADF)、DM和有機物(OM)的表觀消化率均無顯著影響(P0.05)。3)飼糧中添加RPB和RPC均可以顯著降低1~3月齡湖羊的背膘厚(P0.05),對宰前活重、屠宰率、胴體重、GR值、眼肌面積、腹脂重、腎周脂肪重和肌內(nèi)脂肪(IMF)含量無顯著影響(P0.05),但RPB組和RPC組眼肌面積較對照組分別增加了10.86%和3.16%,IMF含量較對照組分別增加了17.27%和36.36%,腎周脂肪重較對照組分別降低了20.60%和22.67%。綜合以上試驗結果得出,飼糧中添加2.9 g/kg RPB或2.5 g/kg RPC均可以改善1~3月齡湖羊的脂肪沉積部位和胴體品質(zhì),并且從消化性能、生長性能和屠宰性能來看,在滿足維持需要的飼糧營養(yǎng)水平下,2種添加劑的作用相當
[Abstract]:The purpose of this study was to study the growth and digestibility of rumen protected betaine (RPBB) and rumen protected choline (RPC) on 1 ~ 3 month old Hu sheep. The effect of slaughter performance and fat deposition. Thirty male male lambs of about 1 month old with similar body weight were randomly divided into three groups: control group and RPC group. 10 rats in each group. The control group was fed with basic diet. RPB group and RPC group were fed with 2. 9 g / kg RPB and 2. 5 g / kg RPC on the basis of basic diet. The results showed that the average daily gain (ADG), average daily feed intake (ADFI) and feed weight ratio (FWR) were not significantly affected by adding RPB and RPC in the diet of 1: 1) 3-month-old Hu Sheep (P 0.05). But RPB group. Compared with the control group, the average daily gain of RPC group increased by 19.97% and 27.75.2respectively. Neutral detergent fiber (NDF), acid detergent fiber (ADF). The apparent digestibility of DM and Om had no significant effect on P0.05U. 3) the addition of RPB and RPC in diet could significantly decrease the backfat thickness (P0.05) of 1 ~ 3 month old Hu sheep. There were no significant effects on live weight, slaughter rate, carcass weight and gr value, eye muscle area, abdominal fat weight, perirenal fat weight and IMF content of intramuscular fat (P0.05). However, the area of eye muscle in RPB group and RPC group increased by 10.86% and 3.16 respectively compared with the control group, 17.27% and 36.36% respectively. Compared with the control group, the perirenal fat weight decreased by 20.60% and 22.67 respectively. Addition of 2. 9 g / kg RPB or 2. 5 g / kg RPC to diet could improve fat deposition and carcass quality of 1 or 3 month old Hu sheep and improve digestibility. In terms of growth performance and slaughtering performance, the effect of the two additives is equivalent under the dietary nutrition level which meets the maintenance needs.
【作者單位】： 揚州大學動物科學與技術學院;
【基金】：國家公益性行業(yè)(農(nóng)業(yè))科研專項“南方地區(qū)肉羊育肥與高品質(zhì)肉生產(chǎn)技術研究”(201303144) 江蘇省蘇北科技發(fā)展計劃(BN2016075)
【分類號】：S826.5
【正文快照】： 近年來,受集約化養(yǎng)殖的影響,我國肉羊活動量減少,加之新鮮青綠飼料的缺乏,從而造成羔羊在育肥后期背膘、腹脂逐漸增厚,嚴重影響著我國肉羊的肉品質(zhì)及應有的經(jīng)濟效益。另外,隨著人們生活水平的提高,對羊肉的需求逐漸轉移到鮮嫩可口、營養(yǎng)豐富的高檔羔羊肉上來,因此,迫切需要一

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