RUMINANT AND HERBIVORE NUTRITION AND FEED

Effects of Soybean Straw on Postpartum Weight Loss, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Simmental Cows

  • ZOU Songyan ,
  • LI Yan ,
  • SUN Xiaoyu ,
  • LI Jianguo ,
  • SHEN Yizhao ,
  • GAO Yanxia ,
  • LI Qiufeng ,
  • CAO Yufeng ,
  • WANG Meimei
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  • 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001, China;
    2. College of Animal Medicine, Hebei Agricultural University, Baoding 071001, China;
    3. Institute of Animal Husbandry and Veterinary Medicine, Heilongjiang Academy of Agricultural Reclamation Sciences, Harbin 150038, China

Received date: 2021-02-07

  Online published: 2021-09-18

Supported by

 

Abstract

The aim of this experiment was to study the effects of soybean straw on postpartum weight loss, nutrient apparent digestibility and serum biochemical indexes of Simmental cattle. Thirty-six Simmental cows with similar weight, mating date, parity and 4 to 6 months gestation were randomly divided into three groups (groups Ⅰ, Ⅱ and Ⅲ), with 12 cows in each group. Three kinds of combined roughages were composed of soybean straw and corn straw according to different proportions (0:100, 50:50 and 50:50, respectively), and two kinds of separate roughages were fed, respectively. The experimental period was 11 months. The results showed as follows:1) there was no significant difference in prenatal body weight and postpartum body weight among the three groups (P>0.05). 2) The apparent digestibility of dry matter (DM) in group Ⅰ was the highest, which was 3.59% and 0.81% higher than that in group Ⅱ and group Ⅲ, respectively (P<0.05), and that in group Ⅲ was 2.76% higher than that in group Ⅱ (P<0.05). The apparent digestibility of neutral detergent fiber (NDF) in group Ⅰ was the highest, which was 8.02% (P<0.05) and 6.73% (P>0.05) higher than that in group Ⅱ and group Ⅲ, respectively. Soybean straw had no significant effect on the apparent digestibility of DM, crude protein (CP), ether extract (EE), NDF, acid detergent fiber (ADF), calcium (Ca), phosphorus (P) of Simmental cattle (P>0.05). 3) Compared with group Ⅰ, the serum prenatal triglyceride (TG) content and alkaline phosphatase (ALP) activity and postpartum glucose (GLU) content and ALP activity in group Ⅱ and group Ⅲ were significantly lower (P<0.05). To sum up, with the increase of the proportion of soybean straw in diet, the feeding cost of Simmental cows decrease, and the apparent digestibility of DM, CP, EE, NDF, ADF, Ca and P are not affected, but some serum indexes decrease. Combined with various indicators, it is recommended that the amount of soybean straw instead of corn straw is 50%.

Cite this article

ZOU Songyan , LI Yan , SUN Xiaoyu , LI Jianguo , SHEN Yizhao , GAO Yanxia , LI Qiufeng , CAO Yufeng , WANG Meimei . Effects of Soybean Straw on Postpartum Weight Loss, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Simmental Cows[J]. Chinese Journal of Animal Nutrition, 2021 , 33(9) : 5054 -5063 . DOI: 10.3969/j.issn.1006-267x.2021.09.026

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