Resumption of ovarian function, the metabolic profile and body condition in Brahman cows (Bos indicus) is not affected by the combination of calf separation and progestogen treatment


Por: Diaz, Ramiro, Galina, Carlos S., Rubio, Ivette, Corro, Manuel, Luis Pablos, Jose, Rodriguez, Ana, Orihuela, Agustin

Publicada: 1 oct 2017
Resumen:
To evaluate the effect of different calf separation procedures after a progestogen treatment on the resumption of ovarian function, body condition and metabolic profile, 59 multiparous Brahman cows grazing on a mixed grass pasture were studied. No supplementation was given at any time. Body condition score (BCS), fat thickness (FAT) and blood metabolites were measured fortnightly from the beginning of the last trimester of gestation until 96 days postpartum. At 30 days postpartum all animals received a progesterone (P4)-releasing device (CIDR) which was withdrawn 9 days later when prostaglandin F2a was applied. At this time, treatments TW (n = 28), where calves were separated from their dams for 48 h; RS (n = 21), calves were allowed to suckle once a day for 1 h; and continuous suckling (CS; n = 10). Ovarian function was assessed by blood concentrations of progesterone on days -14, -9, 10, 13, 30 and 33 after CIDR removal. At the end of the experimental period, an average of 20% of the cows had not initiated estrous cycles. There were no changes of FAT or BCS during the last trimester of pregnancy in all cows (P > 0.05). During the postpartum period cows of all groups lost (P < 0.05) BCS and FAT with a nadir at 60–80 days postpartum, regardless of treatment. At 10 days after CIDR withdrawal the percentage of cows having ovulations was 75, 61 and 80 (P > 0.05) for TW, RS and CS groups. Blood metabolites follow a similar pattern in the three groups. With the conditions of the present study, the method of calf separation after a progestogen treatment, does not affect the resumption of ovarian function or metabolic profile. © 2017 Elsevier B.V.

Filiaciones:
Diaz, Ramiro:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Dept Reprod, Ciudad Univ, Mexico City 04510, DF, Mexico

Galina, Carlos S.:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Dept Reprod, Ciudad Univ, Mexico City 04510, DF, Mexico

Rubio, Ivette:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Ctr Ensenanza Invest & Extens Ganaderia Trop, Tlapacoyan 93650, Veracruz, Mexico

Corro, Manuel:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Ctr Ensenanza Invest & Extens Ganaderia Trop, Tlapacoyan 93650, Veracruz, Mexico

Luis Pablos, Jose:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Dept Genet & Bioestadist, Ciudad Univ, Mexico City 04510, DF, Mexico

Rodriguez, Ana:
 Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Dept Reprod, Ciudad Univ, Mexico City 04510, DF, Mexico

Orihuela, Agustin:
 Univ Autonoma Estado Morelos, Fac Ciencias Agr, Cuernavaca 62210, Morelos, Mexico
ISSN: 03784320
Editorial
Elsevier, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, Países Bajos
Tipo de documento: Article
Volumen: 185 Número:
Páginas: 181-187
WOS Id: 000412613700021
ID de PubMed: 28911854