Performance and carcass characteristics of cattle with different castration practices
DOI:
https://doi.org/10.17523/bia.2023.v80.e1512Palabras clave:
Dimorfismo sexual, engorde, Espesor de grasa subcutánea, Ganancia de peso, Grado de terminaciónResumen
The aim of this research was to evaluate the performance and carcass characteristics of immunocastrated cattle, in comparison to castrated and non-castrated cattle supplemented on pasture. 36 bovines were used, distributed in a completely randomized design, in 3 treatments: non-castrated animals (ANC), animals castrated late by the surgical method (ACC) and immunocastrated animals (AIC), with 12 replicates each. Immunocastration was performed following the protocol of two doses of the immunocastrating vaccine, with an interval of 60 days, promoting a castrated effect of 120 days. The animals were kept on mixed pasture in an extensive rearing system using rotational grazing, they received mineral supplement in the first 3 months and specific feed for the fattening season in the subsequent 3 months, according to the property’s standards. The total experimental period was 180 days. Data were hidden from the normality test, analysis of variance and mean comparisons were performed using the Tukey test, except for the variable degree of finishing, which was maintained at the chi-square test, at 5%. Average daily weight and total weight gains, hot and cold carcass weights and hot and cold carcass yield did not show statistical differences (P>0.05) for animals submitted to different treatments. However, the cooling loss was lower in immunocastrated animals (P<0.05), followed by surgically castrated and non-castrated animals. Immunocastrated and surgically castrated animals showed better carcass finishing (P<0.05) than non-castrated animals. The initial temperature of the carcass was lower (P<0.05) in the immunocastrated group, while for the final temperature no statistical differences (P>0.05) were verified for the animals submitted to different treatments. Final carcass pH was higher (P<0.05) in immunocastrated than in surgically castrated animals, but did not differ (P>0.05) from non-castrated animals. Immunocastrated animals, in a grazing system receiving supplementation, showed similar gains in weight and carcass weight in relation to non-castrated and surgically castrated animals, however, with lower losses to carcass cooling.
Descargas
Referencias
ALVES, L. G. C.; FERNANDES, A. R.M.; SOUZA, G. M.; CUNHA, C. M.; FOPPA, L. Bem-estar e manejo pré-abate e suas influências sobre a qualidade de carne e carcaça de bovinos de corte. Enciclopédia biosfera, Centro Científico Conhecer, v.16, n. 29, 2019. https://doi.org/10.18677/EnciBio_2019A200
AMATAYAKUL-CHANTLER, S.; HOE, F.; JACKSON, J. A.; ROCA, R. O.; STEGNER, J. E.; KING, V.; HOWARD, R.; LOPEZ, E.; WALKER, J. Effects on performance and carcass and meat quality attributes following immunocastration with the gonadotropin releasing factor vaccine Bopriva or surgical castration of Bos indicus bulls raised on pasture in Brazil. Meat Science, v. 95, n. 1, p. 78-84, 2013. http://doi.org/10.1016/j.meatsci.2013.04.008
ANDREO, N.; BRIDI, A. M.; SOARES, A. L.; PROHMANN, P. E. F.; PERES, L. M.; TARSITANO, M. A.; GIANGARELI, B. L.; TAKABAYASHI, A. A. Fatty acid profile of beef from immunocastrated (BOPRIVA®) Nellore bulls. Meat Science, v. 117, p.12-17, 2016. https://doi.org/10.1016/j.meatsci.2016.02.029
ANDREO, N.; BRIDI, A. M.; TARSITANO, M. A.; PERES, L. M.; BARBON, A. P. A. C.; ANDRADE, E. L.; PROHMANN, P. E. F. Influência da imunocastração (Bopriva®) no ganho de peso, características de carcaça e qualidade da carne de bovinos Nelore. Semina Ciências Agrárias, Londrina, v. 34, n. 6, p. 4121-4132, 2013. http://doi.org/10.5433/1679-0359.2013v34n6Supl2p4121
Descargas
Publicado
Número
Sección
Licencia
Derechos de autor 2023 Boletín de Industria Animal
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.
Os autores não serão remunerados pela publicação de trabalhos, pois devem abrir mão de seus direitos autorais em favor deste periódico. Por outro lado, os autores ficam autorizados a publicar seus artigos, simultaneamente, em repositórios da instituição de sua origem, desde que citada a fonte da publicação original seja Boletim de Indústria Animal. A revista se reserva o direito de efetuar, nos originais, alterações de ordem normativa, ortográfica e gramatical, com vistas a manter o padrão culto da língua e a credibilidade do veículo. Respeitará, no entanto, o estilo de escrever dos autores. Alterações, correções ou sugestões de ordem conceitual serão encaminhadas aos autores, quando necessário. Nesses casos, os artigos, depois de adequados, deverão ser submetidos a nova apreciação. As opiniões emitidas pelos autores dos artigos são de sua exclusiva responsabilidade. Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob a Licença Creative Commons Attribution (CC-BY-NC). A condição BY implica que os licenciados podem copiar, distribuir, exibir e executar a obra e fazer trabalhos derivados com base em que só se dão o autor ou licenciante os créditos na forma especificada por estes. A cláusula NC significa que os licenciados podem copiar, distribuir, exibir e executar a obra e fazer trabalhos derivados com base apenas para fins não comerciais.
