›› 2015, Vol. 42 ›› Issue (11): 2945-2953.doi: 10.16431/j.cnki.1671-7236.2015.11.019

• 动物营养与饲料科学 • 上一篇    下一篇

混合酸处理全株玉米青贮品质及其对绵羊生长性能的影响

卢晓楠1, 丁兰兰1, 朱文广2, 马勇1, 玉柱1, 罗海玲1   

  1. 1. 中国农业大学动物科技学院, 动物营养学国家重点实验室, 北京 100193;
    2. 国家肉羊产业技术体系东营试验站, 东营 257335
  • 收稿日期:2015-05-15 出版日期:2015-11-20 发布日期:2015-11-26
  • 通讯作者: 罗海玲 E-mail:luohailing@cau.edu.cn
  • 作者简介:卢晓楠(1989-),女,辽宁本溪人,硕士,研究方向:反刍动物营养,E-mail:kumaco@163.com
  • 基金资助:
    农业部行业科技(201303061);国家肉羊产业技术体系(CARS-39)

Whole-plant Corn Silage Quality Treated with Mixed Acids and its Effect on Sheep Growth Performance

LU Xiao-nan1, DING Lan-lan1, ZHU Wen-guang2, MA Yong1, YU Zhu1, LUO Hai-ling1   

  1. 1. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. CARS Dongying Experimental Station, Dongying 257335, China
  • Received:2015-05-15 Online:2015-11-20 Published:2015-11-26

摘要: 试验旨在研究添加不同浓度混合酸对全株玉米青贮品质的影响,以及饲喂后对杜寒杂交(杜泊羊×小尾寒羊)F1代绵羊生长性能的影响。试验混合酸比例组成为甲酸45%、丙酸45%、丙酸钠10%,以蜡熟期全株玉米为青贮原料,分为4组,混合酸添加浓度分别为0(对照组)、0.3%、0.6%、1%。结果表明,与对照组相比,各试验组均显著降低了青贮中乙酸/丙酸的比值(P<0.05),且0.3%及0.6%组对全株玉米青贮品质改善效果较好。CNCPS结果显示,0.6%组显著提高了青贮中的慢速降解蛋白(PB3)组分(P<0.05),同时降低了不可利用纤维(CC)组分(P>0.05),改善了青贮品质。与对照组相比,各试验组均有效地抑制了霉菌酵母菌的繁殖,改善了青贮的有氧稳定性。饲养试验结果发现,试验组绵羊平均日增重及料重比均优于对照组,其中0.6%及1%组绵羊的料重比显著优于对照组(P<0.05)。综上所述,混合酸处理能改善全株玉米青贮品质;0.6%浓度混合酸处理青贮饲喂绵羊后可显著提高杜寒杂交F1代绵羊的生长性能。

关键词: 混合酸; 全株玉米青贮; 品质; 绵羊; 生长性能

Abstract: In order to explore different concentrations of mixed acids in improving quality of whole-plant corn silage and their effects on growth performance of Dorper×Han F1 sheep.4 levels of 45% formic acid,45% propionic acid and 10% sodium propionate were mixed,and 0(control),0.3%,0.6% and 1% were added to 4 groups of ripening period whole-plant corn.The results showed that compared with control group,the experimental groups could significantly decrease the proportion of AA/PA in silage (P<0.05);0.3% and 0.6% groups had the better effects.Based on the result of CNCPS,0.6% group significantly improved the PB3 component (P<0.05),reduced the CC component (P>0.05),and improved the quality of silage.Compared with control group,the experimental groups effectively inhibited the mold and yeast reproduction,improved the aerobic stability of silage.The feeding trial results showed that ADG and F/G of sheep in experimental groups were better than control group,and F/G of both 0.6% and 1% groups were significantly better than that in control group (P<0.05).In conclusion,treatment of mixed acids could improve the quality of whole-plant corn silage,and silage treated with 0.6% levels of mixed acids could significantly improve the growth performance of Dorper×Han F1 sheep.

Key words: mixed acids; whole-plant corn silage; quality; sheep; growth performance

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