Vet World Vol.16 March-2023 Article-6
Research Article
Veterinary World, 16(3): 464-473
https://doi.org/10.14202/vetworld.2023.464-473
Effect of short-term nutritional supplementation of green microalgae on some reproductive indicators of Anglo-Nubian crossbred goats
2. School of Veterinary Medicine, Ceará State University (UECE), Fortaleza, CearCeará, 60714-903, Brazil.
3. School of Veterinary Medicine, University of Fortaleza (UNIFOR), Fortaleza, Ceará, 60811-905, Brazil.
4. Department of Animal Science, Federal University of Ceará (UFC), Fortaleza, Ceará, 60021-970 Brazil.
Background and Aim: Despite the wide spectrum of uses, one of the chief drawbacks to expanding microalgae as a food supplement in livestock is the lack of a regimen protocol with established dosage and time length of supplementation. Therefore, this study aimed to investigate the effect of short-term supplementation with increasing doses of microalgae on ovarian response in goats reared in northeast Brazil.
Materials and Methods: Twenty-eight goats had their follicular waves synchronized using three injections of a prostaglandin analog at 7-day intervals. Goats were allocated to groups that received daily oral Chlorella supplementation for 7 days, respectively: 5 g, GMA5 group (n = 7), 10 g (GMA10; n = 7), and 20 g (GMA20; n = 7). The control group (GMA 0; n = 7) received a drench of water.
Results: The groups showed a quadratic increase (p = 0.0156) in kidney fat thickness but there was a significant reduction in dry matter intake in the GMA20 group. The GMA20 group showed higher glucose levels and glutathione peroxidase (p < 0.05). There was a decrease in plasma cholesterol (p < 0.05) in the 10 and 20 g treatments. The number of total follicles increased quadratically. Follicles <3 mm increased linearly (p = 0.0113) for microalgal supply. The GMA10 and GMA20 groups had the highest values (p < 0.05) among the treatments. After inducing ovulation, there was a significant increase in follicles >3 mm in the GMA10 group, which also showed a greater (p < 0.05) area of intraovarian blood perfusion and pulsatility index of the ovarian artery.
Conclusion: We conclude that for 7 days of supplementation, the administration of 10 g of microalgae appears to be the most efficient dosage for stimulating the ovarian response in tropical goats. Keywords: Doppler, follicles, goat, microalga, ovarian blood flow, ovarian response.
Keywords: Doppler, follicles, goat, microalga, ovarian blood flow, ovarian response.
How to cite this article: Silva MRL, Alves JPM, Fernandes CCL, Cavalcanti CM, Conde AJH, Bezerra AF, Soares ACS, Teixeira DIA, do Rego AC, and Rondina D (2023) Effect of short-term nutritional supplementation of green microalgae on some reproductive indicators of Anglo-Nubian crossbred goats, Veterinary World, 16(3): 464-473.
Received: 03-12-2022 Accepted: 30-01-2023 Published online: 17-03-2023
Corresponding author: Davide Rondina E-mail: davide.rondina@uece.br
DOI: 10.14202/vetworld.2023.464-473
Copyright: Silva MRL, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.