天然牧草型全混合日粮颗粒饲料配方筛选研究

doi:10.12160/j.issn.1672-5190.2021.02.008

Abstract

Abstract: [Objective] To select the formula of native grass based total mixed ration pellets for fattening mutton sheep. [Method] Taking native grass as roughage, maize meal, soybean cake and wheat skin as concentrate, salt and premix as feed additive, and by referring to the ′Feeding Standard of Meat-producing Sheep and Goats′（NY/T 816-2004）, an agricultural industry recommended standard of China, formulas of total mixed ration were designed on the basis of setting native hay accounting for 50% （formula 1）, 60% （formula 2） and 70 % （formula 3） of the feed intake. Then pellets of total mixed ration were prepared. By analyzing the nutrient composition and in vitro dry matter digestibility （IVDMD） of different formulas, the optimum formula of native grass-type total mixed ration pellets for fattening mutton sheep was selected. [Result] The crude protein （CP） contents in formula 2 and formula 3 were significantly （P<0.05） higher than that in formula 1. The contents of neutral detergent fiber （NDF） and acid detergent fiber （ADF） in formula 2 and 3 were significantly （P<0.05） lower than those in formula 1,while the IVDMD in formula 2 was significantly （P<0.05） higher than that in formula 1 and 3. [Conclusion] For fattening sheep with a weight of 25 kg and a daily gain of 0.45 kg, the native grass-type total mixed ration pellets with native hay accounting for 60% of the feed intake （formula 2） is the best.

Key words: native grass, pellet feed, mutton sheep fattening, formula selection, in vitro dry matter digestibility

CLC Number:

SUN Lin, XIAO Yan-zi, FANG Yong-yu, WU Xiao-guang, Nana, YIN Guo-mei, LIU Si-bo, XUE Yan-lin. Optimum Formula Selection of Native Grass-type Total Mixed Ration Pellets[J]. Animal Husbandry and Feed Science, 2021, 42(2): 42-47.

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Optimum Formula Selection of Native Grass-type Total Mixed Ration Pellets

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