生長(zhǎng)肥育豬采食菜籽粕、豌豆和小麥粗麥粉的凈能值

發(fā)布單位:天津瑞孚農(nóng)牧科技集團(tuán)有限公司

查看次數(shù)：6871

時(shí)間：2021-10-14
本研究實(shí)施了兩個(gè)試驗(yàn)：（1）使用間接測(cè)熱法測(cè)定豆粕（SBM）、甘藍(lán)型油菜粕（NCM）和芥菜型油菜粕（JCM）、以及豌豆、小麥粗麥粉（WM）的凈能（NE）值；（2）根據(jù)預(yù)測(cè)方程來(lái)比較相同飼料的NE計(jì)算值與測(cè)定值。

試驗(yàn)1選用6頭回腸瘺管公豬（31 kg），在5 × 6饒丁方設(shè)計(jì)中飼喂5種日糧，每個(gè)日糧6個(gè)重復(fù)。日糧以玉米淀粉為基礎(chǔ)，包含SBM、NCM、JCM、豌豆或WM；SBM是作為參考的。試驗(yàn)2選用6頭回腸瘺管公豬（70 kg）飼喂無(wú)氮飼糧，采用差異法測(cè)定試驗(yàn)1中試驗(yàn)飼料的能量消化率和NE值。利用可消化能（DE）計(jì)算了試驗(yàn)飼料的NE值，并分析了試驗(yàn)飼料的大量營(yíng)養(yǎng)素含量。

試驗(yàn)數(shù)據(jù)顯示，干物質(zhì)水平上，SBM、NCM、JCM、豌豆和WM分別含有：51%、41%、42%、28%和18%的粗蛋白質(zhì)；1.52%、2.95%、2.36%、1.33%、3.12%的乙醚提取物； 2.93%、0.14%、1.44%、36.7%、28.7%的淀粉；5.30%、21.0%、13.4%、9.49%和16.1%的酸性洗滌纖維。SBM的NE測(cè)定值（2.29 Mcal/kg）與NCM（1.72 Mcal/kg DM）或JCM（2.14 Mcal/kg DM）沒(méi)有顯著差異。NCM和JCM在NE值上沒(méi)有差異。豌豆（2.00 Mcal/kg）和WM（2.55 Mcal/kg）的NE測(cè)定值無(wú)顯著差異。相同飼料的NE計(jì)算值：SBM 的（2.18 Mcal/kg DM）、NCM （1.73 Mcal/kg DM）和JCM （1.86 Mcal/kg DM）之間無(wú)顯著差異。但是，豌豆的NE計(jì)算值（2.51 Mcal/kg DM）高于其測(cè)定值（P = 0.004），WM的NE計(jì)算值（2.27 Mcal/kg DM）與測(cè)定值比較有降低的趨勢(shì)（P = 0.054）。

綜上所述，基于同一飼料的DE值和大量營(yíng)養(yǎng)成分，可以預(yù)測(cè)豆粕和菜籽粕的NE值；然而，不能準(zhǔn)確預(yù)測(cè)豌豆和WM的NE值。


Net energy value of canola meal, field pea, and wheat millrun fed to growing-finishing pigs
Two experiments were conducted to (1) determine net energy (NE) values of soybean meal (SBM), Napus canola meal (NCM), Juncea canola meal (JCM), field pea, and wheat millrun (WM) using indirect calorimetry, and (2) compare the determined NE values with the calculated NE values of the same feedstuffs based on a prediction equation. In experiment 1, six ileal-cannulated barrows (31 kg) were fed five diets in 5 × 6 Youden square to give six replicates per diet. Diets were cornstarch-based diets containing SBM, NCM, JCM, field pea, or WM. The SBM was included as a reference. In experiment 2, six ileal-cannulated barrows (70 kg) were fed a N-free diet for determining energy digestibility and NE values of test feedstuffs fed in experiment 1 by difference method. The NE values of test feedstuffs were also calculated from the digestible energy (DE) values and analyzed macronutrient content of the test feedstuffs. On dry matter (DM) basis, SBM, NCM, JCM, field pea, and WM contained 51%, 41%, 42%, 28%, and 18% crude protein; 1.52%, 2.95%, 2.36%, 1.33%, and 3.12% ether extract; 2.93%, 0.14%, 1.44%, 36.7%, and 28.7% starch; and 5.30%, 21.0%, 13.4%, 9.49%, and 16.1% acid detergent fiber, respectively. The determined NE value for SBM (2.29 Mcal/kg) did not differ from that of NCM (1.72 Mcal/kg DM) or JCM (2.14 Mcal/kg DM). The NCM and JCM did not differ in NE value. Also, the determined NE value did not differ between field pea (2.00 Mcal/kg) and WM (2.55 Mcal/kg). The calculated NE values for SBM (2.18 Mcal/kg DM), NCM (1.73 Mcal/kg DM), and JCM (1.86 Mcal/kg DM) did not differ from the corresponding determined NE values of the same feedstuffs. However, the calculated NE value for field pea (2.51 Mcal/kg DM) was greater (P = 0.004) than the determined NE value of field pea, whereas the calculated NE value for WM (2.27 Mcal/kg DM) tended to be lower (P = 0.054) than the determined NE value of WM. In conclusion, the NE value for SBM and canola meals can be predicted based on the DE value and the macronutrient composition of the same feedstuffs. However, the NE value for field pea and WM may not be predicted precisely based on the DE value and the macronutrient composition of the same feedstuffs.

文章來(lái)源：豬營(yíng)養(yǎng)國(guó)際論壇
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