动物营养学报 >

2019 , Vol. 31 >Issue 7: 3398 - 3410

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.07.054

研究简报 Short Communications

火龙果皮与苜蓿、精料配比对饲料组合效应的研究

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  • 1. 甘肃农业大学动物科学技术学院, 兰州 730070;
    2. 甘肃正合生物科技有限公司, 兰州 730060
袁玖(1980-),女,新疆乌鲁木齐人,讲师,硕士,从事反刍动物营养与饲料资源开发利用研究。E-mail:511370041@qq.com

收稿日期: 2018-12-20

  网络出版日期: 2019-07-19

基金资助

甘肃农业大学伏羲青年英才培养计划（Gaufx-02Y07）

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Evaluation of Associative Effects of Proportion of Pitaya Peel, Alfalfa and Concentrate

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  • 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Gansu Zhenghe Biotechnology Co., Ltd., Lanzhou 730060, China

Received date: 2018-12-20

  Online published: 2019-07-19

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摘要

本试验旨在探讨火龙果皮与苜蓿、精料配比对饲料组合效应（AE）的影响。试验采用体外产气法测定在精粗比分别为40：60和30：70时，精料：火龙果皮：苜蓿分别为40：60：0、40：45：15、40：30：30、40：15：45、40：0：60和30：70：0、30：55：15、30：40：30、30：25：45、30：10：60、30：0：70时11种饲料组合及3种单独饲料（精料、火龙果皮、苜蓿）分别培养0、2、4、6、9、12、24、36、48 h的产气量（GP），培养结束后的上清液及残渣用以测定pH、总挥发性脂肪酸（TVFA）与氨态氮（NH3-N）含量、干物质降解率（DMD）和有机物降解率（OMD），并计算出各指标的单项组合效应指数（SFAEI）和综合组合效应指数（MFAEI）。结果表明：精粗比为40：60时，40：60：0、40：45：15组24 h产气量（GP24 h）、DMD、OMD的SFAEI显著或极显著高于其他各组（P<0.05或P<0.01），40：60：0、40：45：15、40：30：30组TVFA和NH3-N的SFAEI显著或极显著高于其他各组（P<0.05或P<0.01），40：60：0、40：45：15组的MFAEI极显著高于其他各组（P<0.01）。精粗比为30：70时，30：70：0组GP24 h的SFAEI极显著高于其他各组（P<0.01），30：70：0、30：55：15、30：40：30组DMD和TVFA的SFAEI极显著高于其他各组（P<0.01），30：70：0、30：55：15组OMD和NH3-N的SFAEI极显著高于其他各组（P<0.01），30：70：0、30：55：15、30：40：30组的MFAEI极显著高于其他各组（P<0.01）。由此可见，精粗比为40：60时，精料：火龙果皮：苜蓿为40：45：15时的MFAEI最大；精粗比为30：70时，精料：火龙果皮：苜蓿为30：70：0时的MFAEI最大。

关键词： 组合效应; 火龙果皮; 苜蓿; 精料; 体外产气法

本文引用格式

袁玖, 唐德富, 万欣杰, 寇伟, 刘自强, 赵祥民, 张泽岩, 王燕娜, 王娟丽, 崔仲勇 . 火龙果皮与苜蓿、精料配比对饲料组合效应的研究[J]. 动物营养学报, 2019 , 31(7) : 3398 -3410 . DOI: 10.3969/j.issn.1006-267x.2019.07.054

Abstract

This experiment was conducted to investigate the effects of proportion of pitaya peel, alfalfa and concentrate on associative effects. The experiment using an in vitro gas production technique, and the proportion of concentrate, pitaya peel and alfalfa was 40:60:0, 40:45:15, 40:30:30, 40:15:45, 40:0:60 and 30:70:0, 30:55:15, 30:40:30, 30:25:45, 30:10:60, 30:0:70 when concentrate to roughage ratio was 40:60 and 30:70, respectively. Gas production (GP) of 11 feed combinations and 3 individual feed (concentrate, pitaya peel and alfalfa) fermented alone was recorded at 0, 2, 4, 6, 9, 12, 24, 36, 48 h, respectively. After incubation, the incubation fluid and residues were used to determine pH, total volatile fatty acids (TVFA) content, ammonia nitrogen (NH3-N) content, dry matter degradability (DMD) and organic matter degradability (OMD), and the single-factor associative effects indexes (SFAEI) of each index and multiple-factors associative effects index (MFAEI) were calculate. The results showed as follows:when the concentrate to roughage ratio was 40:60, the SFAEI of 24 h gas production (GP24 h), DMD and OMD in 40:60:0 and 40:45:15 groups was significantly higher than that in other groups (P<0.05 or P<0.01), the SFAEI of TVFA and NH3-N in 40:60:0, 40:45:15 and 40:30:30 groups was significantly higher than that in other groups (P<0.05 or P<0.01), and the MFAEI in 40:60:0 and 40:45:15 groups was significantly higher than that in other groups (P<0.01). When the concentrate to roughage ratio was 30:70, the SFAEI of GP24 h in 30:70:0 group was significantly higher than that in other groups (P<0.01), the SFAEI of DMD and TVFA in 30:70:0, 30:55:15 and 30:40:30 groups was significantly higher than that in other groups (P<0.01), the OMD and NH3-N in 30:70:0 and 30:55:15 groups were significantly higher than those in other groups (P<0.01), and the MFAEI in 30:70:0, 30:55:15 and 30:40:30 groups was significantly higher than that in other groups (P<0.01). In conclusion, when the concentrate to roughage ratio is 40:60, the MFAEI is the highest when concentrate:pitaya peel:alfalfa is 40:45:15; when the concentrate to roughage ratio is 30:70, the MFAEI is the highest when concentrate:pitaya peel:alfalfa is 30:70:0.

Key words： associative effects; pitaya peel; alfalfa; concentrate; in vitro gas production

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