Morbidity-mortality and performance evaluation of Brahman calves from in vitro embryo productionReportar como inadecuado

Morbidity-mortality and performance evaluation of Brahman calves from in vitro embryo production - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

BMC Veterinary Research

, 7:79

First Online: 04 December 2011Received: 06 April 2011Accepted: 04 December 2011 Background

The use of bovine in vitro embryo production IVP increases the reproductive potential of genetically superior cows, enabling a larger scale of embryo production when compared with other biotechnologies. However, deleterious effects such as abnormal fetal growth, longer gestation period, increased birth weight, abortion, preterm birth and higher rates of neonatal mortality have been attributed to IVP. The aim of this study was to compare the influence of in vitro embryo production and artificial insemination AI on gestation length, complications with birth, birth weight, method of feeding colostrum, passive transfer of immunity, morbidity-mortality, and performance in Brahman calves.

ResultsWhilst gestation length and birth weight were significantly increased in IVP-derived calves, no difference in weaning weight was observed between groups. The passive transfer of immunity PT, was assessed in IVP n = 80 and AI n = 20 groups 24 hours after birth by determination of gamma-glutamyl transferase GGT and gammaglobulin activity as well as by quantification of the concentration of total protein in serum. No differences in passive transfer or incidences of dystocia and diseases at weaning were observed between groups. Birth weight, method of feeding colostrum and dystocia were not correlated with PT in either group.

ConclusionsIn this study, in vitro embryo production did not affect the health status, development, or passive transfer of immunity in Brahman calves.

Electronic supplementary materialThe online version of this article doi:10.1186-1746-6148-7-79 contains supplementary material, which is available to authorized users.

Download fulltext PDF

Autor: Andreza Pimenta-Oliveira - José P Oliveira-Filho - Adriano Dias - Roberto C Gonçalves


Documentos relacionados