Research Article Open Access

β-carotene Supplementation Increases Progesterone Concentration and Glutathione Peroxidase Activity Following Alternative Progesterone Primed Oestrous Synchronization Protocol in Goats

Dominic Lado Marino Gore1 and Khoboso Christina Lehloenya2
  • 1 University of Pretoria, South Africa
  • 2 University of Zululand, South Africa

Abstract

The present study evaluated the effect of β-carotene supplementation and oestrous synchronization protocol on ovarian activity and fertility of Saanen does during the breeding season. The supplemented group received 100 mg β-carotene during the breeding and all does were synchronised with Controlled Internal Drug Release dispenser (CIDR) and injected with cloprostenol at CIDR withdrawal. One group of does were injected with 300 IU of eCG, while in another group bucks wearing aprons were introduced at CIDR withdrawal. Does were artificially inseminated twice (48 and 60 h) with fresh undiluted semen. The onset and duration of oestrus, progesterone, oestrdiol-17β and glutathione peroxidase activity, oestrous response and conception rate were analysed. Synchronization protocol did not affect response to oestrus, onset and duration of oestrus and oestradiol-17β concentration. The male presence group had significantly higher conception rate (97%) than the eCG (72%) group. β-carotene supplemented group had higher progesterone concentration and glutathione peroxidase activity. Supplemental β-carotene during the breeding period therefore, could play an important role on establishment of pregnancy due to high progesterone concentration and glutathione peroxidase activity. Inclusion of male effect in progesterone based oestrous synchronization protocol improves conception rate. Therefore, male effect can be used as an alternative to equine chorionic gonadotropin in progesterone based oestrous synchronization protocols especially, where drugs for oestrous synchronization are not affordable.

American Journal of Animal and Veterinary Sciences
Volume 15 No. 3, 2020, 211-219

DOI: https://doi.org/10.3844/ajavsp.2020.211.219

Submitted On: 19 May 2020 Published On: 8 August 2020

How to Cite: Gore, D. L. M. & Lehloenya, K. C. (2020). β-carotene Supplementation Increases Progesterone Concentration and Glutathione Peroxidase Activity Following Alternative Progesterone Primed Oestrous Synchronization Protocol in Goats. American Journal of Animal and Veterinary Sciences, 15(3), 211-219. https://doi.org/10.3844/ajavsp.2020.211.219

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Keywords

  • Artificial Insemination
  • Buck Effect
  • eCG
  • Glutathione Peroxidase Activity
  • Oestradiol-17β
  • Progesterone