Effect of short-term nutritional supplementation of green microalgae on some reproductive indicators of Anglo-Nubian crossbred goats
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Published:2023-03
Issue:
Volume:
Page:464-473
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ISSN:2231-0916
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Container-title:Veterinary World
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language:en
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Short-container-title:Vet World
Author:
Silva Maria Raquel Lopes1ORCID, Alves Juliana Paula Martins2ORCID, Fernandes César Carneiro Linhares3ORCID, Cavalcanti Camila Muniz2ORCID, Conde Alfredo José Herrera1ORCID, Bezerra Alessandra Façanha1ORCID, Soares Anne Caroline Santos1ORCID, Teixeira Dárcio Ítalo Alves1ORCID, do Rego Anibal Coutinho4ORCID, Rondina Davide1ORCID
Affiliation:
1. School of Veterinary Medicine, Ceará State University (UECE), Fortaleza, Ceará, 60714-903, Brazil. 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.
Abstract
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.
Funder
Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico
Publisher
Veterinary World
Subject
General Veterinary
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