本文選題：肉羊 + 代謝能��； 參考：《動物營養(yǎng)學報》2017年05期

【摘要】：本試驗應用套算法分析肉羊常用蛋白質(zhì)飼料原料中的營養(yǎng)成分含量和可消化營養(yǎng)成分對有效能值的影響,基于飼料原料中的營養(yǎng)成分含量和可消化營養(yǎng)成分建立蛋白質(zhì)飼料原料代謝能(ME)的預測模型。選取36只22月齡、體重為(52.6±1.4)kg的杜泊×小尾寒羊F1代雜交去勢肉羊,采用完全隨機區(qū)組設計分為6個處理,包括1個基礎飼糧處理和5個試驗飼糧處理,每個處理6只羊。利用消化代謝試驗和呼吸代謝試驗并結(jié)合套算法計算5種蛋白質(zhì)飼料原料的消化能(DE)和ME,并分析蛋白質(zhì)飼料原料DE、ME與該原料中營養(yǎng)成分[干物質(zhì)(DM)、有機物(OM)、總能(GE)、粗蛋白質(zhì)(CP)、粗脂肪(EE)、中性洗滌纖維(NDF)、酸性洗滌纖維(ADF)]和可消化營養(yǎng)成分[可消化干物質(zhì)(DDM)、可消化有機物(DOM)、可消化粗蛋白質(zhì)(DCP)、可消化粗脂肪(DEE)、可消化中性洗滌纖維(DNDF)、可消化酸性洗滌纖維(DADF)]含量之間的相關關系。結(jié)果表明:飼料原料中的OM、DDM、DOM、DCP含量與DE和ME均存在極顯著正相關(P0.01);另外,DADF與DE存在極顯著負相關(P0.01),與ME存在顯著負相關(P0.05)。通過飼料原料中的營養(yǎng)成分含量預測ME的方程為:ME(MJ/kg)=-82.855+2.391OM(%)+1.802EE(%)-6.21GE(MJ/kg)-0.121ADF(%)(R2=0.910,n=30,P0.01);通過飼料原料中的可消化營養(yǎng)成分含量預測ME的方程為:ME(MJ/kg)=-5.564+30.526DOM(%)+55.402DEE(%)(R2=0.841,n=30,P0.01);通過飼料原料中的可消化營養(yǎng)成分含量與DE共同預測ME的方程為:ME=-5.787+1.126DE(MJ/kg)+20.769DEE(%)(R2=0.879,n=30,P0.01)。綜上所述,在本試驗中,蛋白質(zhì)飼料原料中的部分營養(yǎng)成分和可消化營養(yǎng)成分含量與ME之間存在顯著相關,可通過飼料原料中的營養(yǎng)成分和可消化營養(yǎng)成分含量對肉羊蛋白質(zhì)飼料原料的ME進行有效預測。
[Abstract]:The effect of nutrient content and digestible nutrient on the effective value of common protein feedstuff in meat sheep was analyzed by using set algorithm in this experiment. Based on the content of nutrients and digestible nutrients in feed materials, a prediction model of metabolic energy (ME) of protein feedstuff was established. 36 22 month old crossbred ovariectomized sheep with weight of (52.6 鹵1.4) kg were divided into 6 treatments, including 1 basal diet treatment and 5 experimental diet treatments. The digestibility energy (DE) and ME3 of five kinds of protein feed raw materials were calculated by digestion and metabolism test and respiratory metabolism test combined with a set of algorithms. The total energy of protein feed raw material DEMe and its nutrient components [dry matter (DM), organic matter (OM), total energy] was analyzed. (GE), crude protein (CP), crude fat (EE), neutral detergent fiber (NDF), acid detergent fiber (ADF)] and digestible nutrients [digestible dry matter (DDM), digestible organic matter (Dom), digestible crude protein (DCP), digestible crude fat (DEE), digestible neutral detergent fiber (DEE)] Correlation between the content of DNDF and digestible acid detergent fiber (DADF). The results showed that the content of DOMDCP in feed materials was significantly positively correlated with DE and ME (P0.01), and DADF with DE (P0.01) and ME (P0.05). The equation of predicting ME by the content of nutrients in feed feedstock is: 1 / ME (MJ / kg) -82.855 2.391OM (%) 1.802EE (%) -6.21GE (MJ / kg) -0.121ADF (%) (R2O0.910NU 30P0.01), and the equation of predicting ME by the content of digestible nutrients in feed feedstock is: me (MJ / kg) -5.564 30.526 (%) 55.402DEE (%) (R20.8841n ~ (30P0.01), and the equation of predicting ME by the content of digestible nutrients in feedstuff is: (MJ / kg) -5.564 30.526 (%) 55.402DEE (%) (R20.8841nn ~ (30P0.01); The equation of ME-5.787 1.126DE (MJ / kg) is 20.769DEE (%) (R2O0.879DE (P0.01), and the equation of ME is: ME-5.787 1.126DE (MJ / kg) 20.769DEE (%). In conclusion, in this experiment, there was a significant correlation between the contents of some nutrients and digestible nutrients in protein feed materials and ME. The ME of meat sheep protein feedstuff can be effectively predicted by the contents of nutrient and digestible nutrients in feed materials.
【作者單位】： 中國農(nóng)業(yè)科學院飼料研究所農(nóng)業(yè)部飼料生物技術重點實驗室;新疆農(nóng)業(yè)大學動物科學學院;
【基金】：國家肉羊產(chǎn)業(yè)技術體系(CARS-39) 國家“十二五”支撐計劃“肉羊健康養(yǎng)殖模式構(gòu)建與示范”(2011BAZ01734)
【分類號】：S816

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