Abstract
The performance, intake, feed efficiency, and carcass traits of beef cattle from different gender profile were assessed. Fifteen animals (five steers, five spayed heifers, and five intact heifers) with ±250 kg of initial body weight were randomly assigned in individual pens and fed the same diet for 106 days. At the end of the trial, all the animals were slaughtered and the pH, temperature, and weight of the carcass were recorded. The right side of each carcass was then separated into chuck, shoulder, flank sirloin, and round for evaluation of commercial cuts yield. The left carcass sides were ribbed between the 12th and 13th ribs where the rib eye area and fat thickness measurements were taken. The 9th–11th rib section was removed from the left half carcass and then dissected into muscle, fat, and bones in order to estimate carcass composition. Gender had no effect (P > 0.05) on performance, intake, digestibility of dry matter and all the nutrients evaluated, feed efficiency, and carcass characteristics. It can be concluded that steers and heifers (spayed or not) have the same potential to produce beef. From a productive and welfare standpoint, there is no reason to spay heifers.
Similar content being viewed by others
References
Association of Official Analytical Chemists—AOAC, 1990. Official methods of analysis 15th ed., (AOAC International, Arlington).
Casali, A.O., Detmann, E., Valadares Filho, S.C., Pereira, J.C., Henriques, L.T., Freitas, S.G. and Paulino, M.F., 2008. Influência do tempo de incubação e do tamanho de partículas sobre os teores de compostos indigestíveis em alimentos e fezes bovinas obtidos por procedimentos in situ, Revista Brasileira de Zootecnia, 37, 335–342.
Dayton, W.R. and White, M.E. 2008. Cellular and molecular regulation of muscle growth and development in meat animals, Journal of Animal Science, 86, E217-E225.
Duarte, M. S., Paulino, P. V. R., Fonseca, M. A., Diniz, L. L., Cavali, J., Serão, N. V. L. 2011. Influence of carcass dental maturity on carcass traits and meat quality of Nellore bulls. Meat Science, 88, 441–446.
Hafez, B., and Hafez, E.S.E. Reprodução animal. 7. ed. Barueri: Manole, p. 13–29, 2004.
Hall, M.B., 2000. Calculation of non-structural carbohydrate content f feeds that contain non-protein nitrogen. University of Florida. PA-25 (Bulletin, 339).
Hankins, O.G., Howe, P.E. 1946. Estimation of the composition of beef carcasses and cuts. United States Department of Agriculture, 1–19. (Technical Bulletin, 926).
Leme, P.R., Silva, S.L., Pereira, A.S.C., Putrino, S.M., Lanna, D.P.D. and Nogueira Filho, J.C,M. 2003. Levels of sugarcane bagasse in diets with high concentrate for Nellore steers in feedlot, Revista Brasileira de Zootecnia, 32, 1786–1791.
Marcondes, M.I., Valadares Filho, S.C. Paulino, P.V.R., Detmann, E. Paulino, M.F. Diniz, L.L. and Santos, T.R. 2008. Performance of animals fed individually or in group and carcass traits of Nellore cattle from three sexual classes, Revista Brasileira de Zootecnia, 37,2243–2250.
Meirelles, C., Bueno Junior, C.F., Kozicki, L.E., Weiss, R.R. and Segui, M.S. 2007. Analysis of the weight profit of heifers castrated by transvaginal technique, Revista Acadêmica, 5, 303–307.
Menezes, L.F.G. and Restle, J. 2005. Performance of feedlot finished steers from advanced generations of rotational crossbreeding between Charolais and Nellore, Revista Brasileira de Zootecnia, 34, 1927–1937.
National Research Council - NRC., 2000. Nutrient requirements of beef cattle. (National Academic Press, Washington, D.C.).
National research council – NRC., 2001. Nutrient requirements of dairy cattle. 7.ed. (National Academic Press, Washington, D.C.).
Oliveira, E.A., Sampaio, A.A.M. Fernandes, A.R.M., Henrique, W., Oliveira, R.V. and Ribeiro, G.M. 2009. Performance and carcass traits of Nellore and Canchim young bulls finished in a feedlot system, receiving diets with sugarcane and two concentrate levels, Revista Brasileira de Zootecnia, 38, 2465–2472.
Paulino, P.V.R., Valadares Filho, S.C., Fonseca, M.A., Marcondes, M.I., Detmann, E., Valadares, R.F.D., Araújo, A. and Véras, R.M.L. 2007. Rendimento de cortes comerciais da carcaça de bovinos Nelore de três classes sexuais, Archivo Latinoamericano de Producción Animal, 15, 434.
Paulino, P.V.R., Valadares Filho, S.C., Detmann, E., Valadares, R.F.D., Fonseca, M.A., Véras, R.M.L. and Oliveira, D.M. 2008. Productive performance of Nellore cattle of different gender fed diets containing two levels of concentrate allowance,Revista Brasileira de Zootecnia, 37, 1079–1087.
Restle, J., Alves Filho, D.C., Faturi, C., Rosa, J.R.P., Pascoal, L.L. Bernardes, R.A.C. and Kuss, F. 2000a. Performance during the growth phase of bulls or steers from different genetic groups, Revista Brazileira de Zootecnia, 291036–1043.
Restle, J., Vaz, F.N. Feijá, G.L.D., Brondani, I.L., Alves Filho, D.C., Bernardes, R.A.C., Faturi, C. and Pacheco, P.S. 2000b. Carcass characteristics from young bulls or steers from different breed composition of Charalois x Nellore, Revista Brasileira de Zootecnia, 29, 1371–1379.
Silva, L.A.F., Pales, A.P. Prado, C.S. Fioravante, M.C.S., Pádua, J.T., Miyagi, E.S., Santos, K.J.G., Silva, M.A.M. and Barbosa, V.T. 2007. Characteristics of carcass and meat in castrated or non castrated Nelore breed heifers, Ciência Animal Brasileira, 8, 777–785.
Van Soest, P.J., Robertson, J.B. and Lewis, B.A. 1991. Symposium: carbohydrate methodology, metabolism, and nutritional implications in dairy cattle. Journal of Dairy Science, 74, 3583–3597.
Vaz, F.N., Restle, J. Arboite, M.Z., Pascoal, L.L., Alves Filho, D.C. and Pacheco, R.F. 2010. Carcass and meat characteristics of young steers and heifers, finished with supplementation on cultivated pasture, Ciência Animal Brasileira, 11, 42–52.
Vittori, A., Qeuiroz, A.C., Resende, F.D., Gesualdi Junior, A., Alleoni, G.F.,Razook, A.G., Figueiredo, L.A.,. Gesualdi, A.C.L.S. 2006. Carcass traits of finishing steers and bulls from different genetic groups, Revista Brasileira de Zootecnia, 35, 2085–2092.
Vittori, A., Gesuáldi Junior, A., Queiroz, A.C. Rezende, F.D., Alleoni, G.F.,Razook, A.G. and Figueiredo, L.A. 2007. Productive performance of castrated or non-castrated bovines of different breeds at finishing phase, Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 59, 1263–1269.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lage, I.N.K., Paulino, P.V.R., Pires, C.V. et al. Intake, digestibility, performance, and carcass traits of beef cattle of different gender. Trop Anim Health Prod 44, 361–367 (2012). https://doi.org/10.1007/s11250-011-0030-z
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11250-011-0030-z