10.6084/m9.figshare.7273430.v1
Diego Soares Machado
Diego Soares
Machado
Guilherme Joner
Guilherme
Joner
Lucas Braido Pereira
Lucas Braido
Pereira
Luciana Pötter
Luciana
Pötter
Ivan Luiz Brondani
Ivan Luiz
Brondani
Dari Celestino Alves Filho
Dari Celestino
Alves Filho
Meta-analysis of the immunocastration technique (anti-GnRH) for male bovines in the finishing phase
SciELO journals
2018
castration methods
daily weight gain
fat cover
forest plot
meat quality
2018-10-31 02:44:42
Dataset
https://scielo.figshare.com/articles/dataset/Meta-analysis_of_the_immunocastration_technique_anti-GnRH_for_male_bovines_in_the_finishing_phase/7273430
<div><p>Abstract: The objective of this work was to analyze the effects of immunocastration on the performance and carcass quality of steers in the finishing phase, compared with non-castration and surgical castration. Data from ten studies with records of 1,261 male bovines were analyzed. The studies included in the meta-analysis necessarily contained treatments with immunocastration specifically against the gonadotropin-releasing hormone. Each study was considered as a random effect in the statistical model used. The data were tested for homogeneity of variances and residue normality, and then subjected to the analysis of variance. Means were compared by Student’s t-test. Non-castrated steers showed greater daily weight gain, feed efficiency, slaughter and hot carcass weights, and loin eye area, besides lower fat thickness than surgically-castrated animals and the lowest a* and b* meat coloration values. Overall, immunocastrated steers were inferior to the non-castrated ones, but superior to those surgically-castrated. Immunocastrated steers present performance and carcass traits superior to those of surgically-castrated animals, but similar meat quality.</p></div>