RESEARCH PAPER

Effects of Rumen-Protected Choline and Rumen-Protected Glucose on Health, Serum Biochemical Indices and Lambing Performance of Perinatal Ewes

  • TU Yuanlu ,
  • TANG Haijiang ,
  • ZHANG Kai ,
  • JIA Xuejing ,
  • BAI Yunfeng ,
  • HONG Wei
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  • 1. Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2. Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing 210014, China;
    3. Xiaohe Technology Co., Ltd., Xuzhou 221300, China;
    4. Shanghai Menon Animal Nutrition Technology Co., Ltd., Shanghai 200157, China

Received date: 2022-05-25

  Online published: 2022-12-15

Abstract

The aim of this study was to evaluate the effects of rumen-protected choline (RPC) and rumen- protected glucose (RPG) on negative energy balance and lambing performance of perinatal ewes. A total of 80 Hu sheep were selected and randomly divided into 4 groups with 20 sheep in each group. The control group was fed a basal diet. The RPG group, RPC group and RPC+RPG group were given 15 g RPG, 3 g RPC, 15 g RPG+3 g per day, respectively. The experimental period was 50 days. The results showed as follows:1) there was no significant difference in the incidence of pregnancy toxemia among groups (P>0.05), but the experimental group had a tendency to improve the survival rate of lambs weaning (0.10>P>0.05) and the birth weight of lambs increased significantly (P<0.05). 2) Compared with the control group, adding RPG significantly decreased the β-hydroxybutyric acid (BHBA) content in serum of the ewes on the day of delivery (P<0.05) and the total protein content in the serum also significantly increased (P<0.05), it also significantly increased the content of thyroxine (T4) at 10 days postpartum (P<0.05), but had no significant effect on serum glucose content (P>0.05). 3) Compared with the control group, the addition of RPC had no significant effect on serum glucose and BHBA contents (P>0.05), on the contrary, serum glutamic-pyruvic transaminase activity on the day of delivery and 20 days after delivery were also significantly improved (P<0.05), and the combination of RPC and RPG had no significant interaction on serum biochemical parameters (P>0.05). In conclusion, adding 15 g/d RPG per head to the perinatal ewe diet can help alleviate the negative energy balance, while the addition of 3 g/d of RPC per head has no significant effect, but the addition of RPC and RPG can improve lamb weaning survival rate and increase the birth weight of lambs.

Cite this article

TU Yuanlu , TANG Haijiang , ZHANG Kai , JIA Xuejing , BAI Yunfeng , HONG Wei . Effects of Rumen-Protected Choline and Rumen-Protected Glucose on Health, Serum Biochemical Indices and Lambing Performance of Perinatal Ewes[J]. Chinese Journal of Animal Nutrition, 2022 , 34(12) : 7935 -7944 . DOI: 10.3969/j.issn.1006-267x.2022.12.042

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