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

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

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

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

RESEARCH PAPER

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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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

Cite this article

ZHANG Rui , RUAN Chao , XIONG Suyu , ZANG Changjiang , CHENG Zhiqiang , JIAO Yiling , YU Yingying , LI Xiaobin , LI Fengming , LUO Qiujiang . Effects of 5, 6-Dimethylbenzimidazole and Cobalt Supplementation in High-Concentrate Diets on Growth Performance and Digestion and Metabolism of Sheep[J]. Chinese Journal of Animal Nutrition, 2022 , 34(10) : 6576 -6586 . DOI: 10.3969/j.issn.1006-267x.2022.10.051

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