The reinsertion of controlled internal drug release devices in goats does not increase the pregnancy rate after short oestrus synchronization protocol at the beginning of the breeding season

Montes Quiroz, Gabriela Lisset y Sánchez Dávila, Fernando y Grizelj, Juraj y Bernal Barragán, Hugo y Vázquez Armijo, José Fernando y Bosque González, Alejandro Sergio del y Luna Palomera, Carlos y González Gómez, Adán y Ledezma Torres, Rogelio Alejandro (2018) The reinsertion of controlled internal drug release devices in goats does not increase the pregnancy rate after short oestrus synchronization protocol at the beginning of the breeding season. Journal of Applied Animal Research, 46 (1). pp. 714-719. ISSN 0971-2119

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ABSTRACT This study aimed to evaluate the effect of reinserting controlled internal drug release (CIDR) devices after fixed-time artificial insemination (FTAI) on pregnancy rates in goats. Oestrus was synchronized with a short (5 days) CIDR protocol, and FTAI was conducted 54 hours after CIDR removal. According to the reinsertion of CIDR after FTAI, goats were assigned to three treatments: G0 control group (n=29), no CIDR reinsertion; G7 group (n=27), CIDR reinserted 7 days; G14 group (n=29), CIDR reinserted 14 days. Blood samples were collected to determine progesterone levels. Oestrus appearance (92.9%), interval of CIDR removal to oestrus (IRE=34.1±1.1 hours), interval of oestrus onset to artificial insemination (IEAI= 20.2±1.0 hours), mean duration of oestrus (38.4±1.4 hours), and pregnancy rates (61.0%) were similar (P>.05) among groups. Progesterone concentrations were higher (P<.05) in G7 and G14 than G0 goats. G7 goats had lower (P<.05) oestrus rate, after CIDR reinsertion, than G0 and G14 goats. Overall pregnancy rate was similar (P>.05) for all groups. In conclusion, reinsertion of CIDR for 7 or 14 days after a short oestrus synchronization protocol and FTAI did not increase the overall pregnancy rate of goats.

Tipo de elemento: Article
Materias: S Agricultura > SF Ganadería / Medicina veretrinaria
Divisiones: Medicina Veterinaria y Zootecnia
Usuario depositante: Lic. Josimar Pulido
Creadores:
CreadorEmailORCID
Montes Quiroz, Gabriela LissetNO ESPECIFICADONO ESPECIFICADO
Sánchez Dávila, FernandoNO ESPECIFICADONO ESPECIFICADO
Grizelj, JurajNO ESPECIFICADONO ESPECIFICADO
Bernal Barragán, HugoNO ESPECIFICADONO ESPECIFICADO
Vázquez Armijo, José FernandoNO ESPECIFICADONO ESPECIFICADO
Bosque González, Alejandro Sergio delNO ESPECIFICADONO ESPECIFICADO
Luna Palomera, CarlosNO ESPECIFICADONO ESPECIFICADO
González Gómez, AdánNO ESPECIFICADONO ESPECIFICADO
Ledezma Torres, Rogelio AlejandroNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 28 Ago 2019 21:28
Última modificación: 28 Ago 2019 21:28
URI: http://eprints.uanl.mx/id/eprint/16615

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