Ovarian follicular growth in Morada Nova sheep supplemented with crude glycerin before mating

Autores

  • Felipe Brener Bezerra de Oliveira Universidade Estadual do Ceará (UECE), Fortaleza, CE
  • Caroline Pessoa da Silva Universidade Estadual do Ceará (UECE), Fortaleza, CE
  • César Carneiro Linhares Fernandes Universidade Estadual do Ceará (UECE), Fortaleza, CE
  • Francisco Carlos de Sousa Instituto Federal do Ceará (IFCE), Crateús, CE
  • Aline Maia Silva Universidade Estadual do Ceará (UECE), Fortaleza, CE
  • Diana Célia Nunes Pinheiro Universidade Estadual do Ceará (UECE), Fortaleza, CE
  • Luiz Fernando de Souza Rodrigues Universidade Federal Rural da Amazônia (UFRA)
  • Davide Rondina Universidade Estadual do Ceará (UECE), Fortaleza, CE

DOI:

https://doi.org/10.7213/academica.14.2016.26

Palavras-chave:

Follicle, Crude glycerin, Pregnancy rate, Ovine, Morada Nova

Resumo

This study was aimed to investigate the follicular growth of Morada Nova sheep supplemented with crude glycerin before mating. Eighteen ewes were subjected to follicular wave and estrus synchronization with three injections of D-cloprostenol administered via IM, on days -14, -7 and -1 before mating. Animals were randomized into two groups, the control (n = 9), which received an oral drench of solution of 200 mL of saline solution, and the glycerin group (n = 9), which was supplied with 200 mL glycerol (n = 9), administered as an oral drench of crude glycerin in saline solution (9:1), 1h after morning feeding. Glycerin was supplied for 6 days, beginning 7 days from the mate. Growth follicular pattern was monitored daily by transrectal ultrasonography during the period of glycerin supplementation. Blood samples were taken during glycerin administration for progesterone and glucose analysis. There was a significant increase (P < 0.001) in blood glucose after supplementation with glycerin (mean of 66.2 ± 1.3 vs 56.5 ± 0.8 mg/dL). The greater availability of energy near to ovulation was beneficial to Morada Nova ewes, leading to a significant increase (P < 0.001) of large follicles (> 3 mm). At diagnosis of pregnancy, it was observed that approximately 87% (13/15) (87.5% control group vs. 85.7% glycerin group) of the ewes were pregnant. The group treated with glycerin presented an increase of more than 40% of prolificacy (1.7 ± 0.3 vs. 1.2 ± 0.2; P=0.21). In conclusion, the monitoring of follicular growth reveals that crude glycerin increases the follicular population of Morada Nova ewes, when applied before mating. 

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Publicado

15-02-2016

Como Citar

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Bezerra de Oliveira FB, Pessoa da Silva C, Carneiro Linhares Fernandes C, de Sousa FC, Maia Silva A, Nunes Pinheiro DC, et al. Ovarian follicular growth in Morada Nova sheep supplemented with crude glycerin before mating. Rev. Acad. Ciênc. Anim. [Internet]. 15º de fevereiro de 2016 [citado 24º de dezembro de 2024];14:235-44. Disponível em: https://periodicos.pucpr.br/cienciaanimal/article/view/12620

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