The Effect of Feeding Top-Dress Cottonseed Bioactive Peptide and Organic Selenium in the Prepartum on the Health of the Reproductive Tract and Subsequent Pregnancy in Holstein Dairy Cattle

Articles in Press

Document Type : Research Paper

Authors

1 Department of Animal Science, Agriculture Faculty, University of Zanjan., Zanjan. Iran.

2 Department of animal science, Faculty of agriculture, University of Zanjan, Zanjan, Iran

3 Agriculture and natural resources research and education center of Chahar Mahal and Bakhtiari province, Animal science research, Iran

Abstract

This study aimed to investigate the effect of feeding top dress Hydroxy Seleno Methionine (HSM) and cotton seed bioactive peptide (CSBP) on body condition, health of the reproductive system and subsequent pregnancy of dairy cows. For this purpose, one hundred and eighty multiparous Holstein cows 21 days prior to the expected calving date were assigned to one of four experimental treatments of a randomized complete block design in a 2x2 factorial arrangement: 1) Basal diet (containing mineral selenium as per NRC (2001) recommendations without peptide; 2) Basal diet plus 300 g bioactive peptide; 3) Basal diet plus 1.2 mg organic selenium per kg of dry matter without bioactive peptides; 4) Basal diet plus 1.2 mg organic selenium per kg of dry matter plus 300 grams of bioactive peptide. The inclusion of HSM during the prepartum period resulted in a higher BCS in postpartum and smaller increase in BCS during prepartumd (P<0.01). Additionally, there was a significant interaction effect between HSM and CSBP on BCS (P<0.02) and its changes (P<0.01) during the post-partum periods. The presence of ovarian cysts, number of inseminations per pregnancy, the endometrium and uterine regression scores and pregnancy during the first insemination was not influenced by any of the experimental treatments (P>0.1). However, HSM had a positive effect on pregnancy during the second insemination (P<0.05). It can be concluded that supplementing HSM could reduce the BCS changes before and after parturition and subsequent to that, it leads to an enhancement in the pregnancy during the second insemination.

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Iranian Journal of animal Science

Articles in Press, Accepted Manuscript
Available Online from 10 July 2024

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History

  • Receive Date: 14 March 2024
  • Revise Date: 13 May 2024
  • Accept Date: 23 May 2024

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