动物营养学报 >

2022 , Vol. 34 >Issue 10: 6576 - 6586

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.10.051

研究论文 RESEARCH PAPER

高精料饲粮中添加5, 6-二甲基苯并咪唑和钴对绵羊生长性能及消化代谢的影响

  • 张瑞 ,
  • 阮超 ,
  • 熊素玉 ,
  • 臧长江 ,
  • 成志强 ,
  • 焦毅灵 ,
  • 余英英 ,
  • 李晓斌 ,
  • 李凤鸣 ,
  • 雒秋江
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  • 1. 新疆农业大学动物科学学院, 新疆肉乳用草食动物营养实验室, 乌鲁木齐 830052;
    2. 新疆昌吉回族自治州药品检验所, 昌吉 831100
张瑞(1998-),女,新疆伊犁人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:1508759948@qq.com

收稿日期: 2022-04-02

  网络出版日期: 2022-10-17

基金资助

国家自然科学基金项目(31960671)

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Effects of 5, 6-Dimethylbenzimidazole and Cobalt Supplementation in High-Concentrate Diets on Growth Performance and Digestion and Metabolism of Sheep

  • ZHANG Rui ,
  • RUAN Chao ,
  • XIONG Suyu ,
  • ZANG Changjiang ,
  • CHENG Zhiqiang ,
  • JIAO Yiling ,
  • YU Yingying ,
  • LI Xiaobin ,
  • LI Fengming ,
  • LUO Qiujiang
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  • 1. Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Institute for Drug Control of Changji Hui Autonomous Prefecture, Changji 831100, China

Received date: 2022-04-02

  Online published: 2022-10-17

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摘要

本试验旨在研究高精料饲粮中添加5, 6-二甲基苯并咪唑(5, 6-DMB)和钴对绵羊生长性能及消化代谢的影响。选用24只8月龄左右、体重(39.23±2.61) kg、体况相近且健康的哈萨克羊公羊，随机分为4组，每组6只。对照组饲喂精粗比为7 ∶ 3的基础饲粮，试验Ⅰ、Ⅱ、Ⅲ组在基础饲粮基础中分别添加80 mg/d 5, 6-DMB+0.25 mg/kg钴、100 mg/d 5, 6-DMB+0.50 mg/kg钴和120 mg/d 5, 6-DMB+0.75 mg/kg钴。试验期共22 d，其中预试期14 d，正试期8 d。结果表明：1)与对照组相比，试验Ⅰ、Ⅱ、Ⅲ组的干物质采食量和平均日增重均极显著升高(P<0.01)；试验Ⅱ组的干物质采食量极显著高于试验Ⅰ、Ⅲ组(P<0.01)，试验Ⅱ组的平均日增重显著高于试验Ⅰ、Ⅲ组(P<0.05)。2)与对照组相比，试验Ⅰ、Ⅱ、Ⅲ组的干物质、有机物、粗蛋白质、粗脂肪、纤维素、半纤维素、钙、磷、总能的表观消化量和表观消化率均极显著升高(P<0.01)。试验Ⅱ组的干物质、有机物、纤维素、半纤维素、钙、磷、总能的表观消化量和表观消化率极显著高于试验Ⅰ、Ⅲ组(P<0.01)，试验Ⅱ组的粗蛋白质、粗脂肪的表观消化量极显著高于试验Ⅰ、Ⅲ组(P<0.01)。3)与对照组相比，试验Ⅰ、Ⅱ、Ⅲ组的氮、钙、磷、能量的保留量和保留率极显著升高(P<0.01)。试验Ⅱ组的钙、磷的保留率极显著高于试验Ⅲ组(P<0.01)，显著高于试验Ⅰ组(P<0.05)。试验Ⅱ组的氮、能量的保留率和氮、钙、磷、能量的保留量均极显著高于试验Ⅰ、Ⅲ组(P<0.01)。由此可见，在高精料饲粮条件下添加不同水平5, 6-DMB和钴可提高绵羊干物质采食量和平均日增重，增加干物质、有机物、粗蛋白质等营养物质的表观消化率，提升氮、钙、磷和能量的代谢，且添加100 mg/d 5, 6-DMB+0.50 mg/kg钴时效果最好。

关键词： 5; 6-二甲基苯并咪唑; 钴; 维生素B12; 生长性能; 消化代谢

本文引用格式

张瑞 , 阮超 , 熊素玉 , 臧长江 , 成志强 , 焦毅灵 , 余英英 , 李晓斌 , 李凤鸣 , 雒秋江 . 高精料饲粮中添加5, 6-二甲基苯并咪唑和钴对绵羊生长性能及消化代谢的影响[J]. 动物营养学报, 2022 , 34(10) : 6576 -6586 . DOI: 10.3969/j.issn.1006-267x.2022.10.051

Abstract

The purpose of this experiment was to study the effects of 5, 6-dimethylbenzimidazole (5, 6-DMB) and cobalt supplementation in high-concentrate diets on growth performance and digestion and metabolism of sheep. Twenty-four healthy Kazakh rams with similar body weight of (39.23±2.61) kg and around 8 months were selected and randomly divided into four groups with six sheep in each group. The control group was fed a basic diet with a concentrate-to-forage ratio of 7 ∶ 3, and trial groups Ⅰ, Ⅱ and Ⅲ were supplemented with 80 mg/d 5, 6-DMB+0.25 mg/kg cobalt, 100 mg/d 5, 6-DMB+0.50 mg/kg cobalt and 120 mg/d 5, 6-DMB+0.75 mg/kg cobalt, respectively. The total trial period was 22 days, which the preliminary trial period was 14 days and the formal trial period was 8 days. The results showed as follows: 1) compared with the control group, the dry matter intake and average daily gain of trial groups Ⅰ, Ⅱ and Ⅲ were significantly increased (P<0.01); the dry matter feed intake of trial group Ⅱ was significantly higher than that of trial groups Ⅰ and Ⅲ (P<0.01), and the average daily weight gain of trial group Ⅱ was significantly higher than that of trial groups Ⅰ and Ⅲ (P<0.05). 2) Compared with the control group, the apparent digestion amount and apparent digestibility of dry matter, organic matter, crude protein, crude fat, cellulose, hemicellulose, calcium, phosphorus and gross energy of trial groups Ⅰ, Ⅱ and Ⅲ were significantly increased (P<0.01). The apparent digestion amount and apparent digestibility of dry matter, organic matter, cellulose, hemicellulose, calcium, phosphorus and gross energy of trial group Ⅱ were significantly higher than those of trial groups Ⅰ and Ⅲ (P<0.01), and the apparent digestion amount of crude protein and crude fat of trial group Ⅱ was significantly higher than that of trial groups Ⅰ and Ⅲ (P<0.01). 3) Compared with the control group, the retention and retention rate of nitrogen, calcium, phosphorus and energy of trial groups Ⅰ, Ⅱ and Ⅲ were significantly increased (P<0.01). The retention rate of calcium and phosphorus of trial group Ⅱ was significantly higher than that of trial group Ⅲ (P<0.01), and significantly higher than that of trial group Ⅰ (P<0.05). The retention rate of nitrogen and energy and the retention of nitrogen, calcium, phosphorus and energy of trial group Ⅱ were significantly higher than those of trial groups Ⅰ and Ⅲ (P<0.01). In conclusion, adding different levels of 5, 6-DMB and cobalt under the condition of high-concentrate diet can increase the dry matter feed intake and average daily gain of sheep, and increase the apparent digestibility of dry matter, organic matter, crude protein and other nutrients, improve the metabolism of nitrogen, calcium, phosphorus and energy, and adding 100 mg/d 5, 6-DMB +0.50 mg/kg cobalt get the best effect.

Key words： 5,6-dimethylbenzimidazole; cobalt; vitamin B12; growth performance; digestion and metabolism

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