Effects of Adding Mannan Oligosaccharides to Complex Chemical Chemically-Treated Straw Diet on Performance and Antioxidation Capacity of Tan Sheep

  • WANG Tian ,
  • WANG Xue ,
  • LI Qingmin ,
  • ZHOU Yuxiang
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  • Agricultural College of Ningxia University, Yinchuan 750021, China

Received date: 2020-09-25

  Online published: 2021-04-15

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Abstract

The purpose of this experiment was to study the effects of adding manna oligosaccharide (MOS) to complex chemical chemically-treated straw diet on the performance and antioxidant capacity of Tan sheep. Twenty weaned Tan sheep with good body condition, good health, similar birth date and similar body weight were selected and randomly divided into 4 groups with 5 sheep in each group. The sheep in control group were fed a basal diet, while those in trial groups Ⅰ, Ⅱ and Ⅲ were fed diets supplemented with 1.0%, 2.0% and 3.0% MOS in the concentrate under the basal diet formula. The forage of the basal diet consisted of complex chemical chemically-treated straw and alfalfa in a ratio of 60:40. The pre-feeding period was 15 days and the trial period was 60 days. The results showed as follows:1) there were no significant differences in average daily gain, total gain, feed/gain and dry matter intake among all groups (P>0.05), however, the average daily gain and total gain of trial group Ⅰ were the highest, and the feed/gain was the lowest. 2) There were no significant differences in initial and final body height, body length and bust, and the increments of them among all groups (P>0.05), but the increments of body height, body length and bust in trial group Ⅰ were higher than those in other groups. 3) On the 30th and 60th day of the trial, the content of serum malondialdehyde (MDA) in each trial group was significantly lower than that in control group (P<0.05), and the serum total antioxidant capacity (T-AOC) in trial group Ⅲ was significantly lower than that in control group (P<0.05); the serum T-AOC in trial group Ⅱ was significantly higher than that in control group on the 60th day (P<0.05). 4) The slaughter performance and nutrient composition of Tan sheep in each trial group were not significantly different from those in control group (P>0.05), but the shear force, water loss rate and the yellow (b*) value of mutton were significantly lower than those in control group (P<0.05). In summary, adding 1.0% MOS to the complex chemically-treated straw diet can promote the growth of Tan sheep, reduce the feed/gain, and improve the meat quality; adding 2.0% MOS can significantly enhance the antioxidant capacity of Tan sheep.

Cite this article

WANG Tian , WANG Xue , LI Qingmin , ZHOU Yuxiang . Effects of Adding Mannan Oligosaccharides to Complex Chemical Chemically-Treated Straw Diet on Performance and Antioxidation Capacity of Tan Sheep[J]. Chinese Journal of Animal Nutrition, 2021 , 33(4) : 2136 -2145 . DOI: 10.3969/j.issn.1006-267x.2021.04.033

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