Production of meat and characteristics of lamb carcass non-castrated, castrated and induced to cryptorchidism

Hélio Carlos Rocha, Maria Isabel Botelho Vieira, Rafael Streinstrasser Fonseca, Leandro Oliveira da Costa, Dileta Cecchetti, Rogério dos Passos Nadal, Filipe dos Santos Rocha

Abstract


The characteristics of lamb meat are influenced by a series of factors, among which the testicular hormone production. In order to estimate the influence on meat characteristics, 24 Suffolk, Ile de France, Santa Inês and Texel crossbred lambs male, in a completely casualised delineation, with three treatments and eight repetitions. All animals were managed in the same way, pasture-raised and fed on native grass, in a Voisin system. The experiment treatments were constituted of non-castrated, castrated and cryptorchid animals. Live weight measurements were recorded at birth, once a month to assess body development and before slaughter. The warm carcass weight at slaughter and the 24 hours post-slaughter weight of the carcass cooled in refrigeration chamber at 5ºC were recorded.  Also, the weights of the variables related to the carcass were obtained. The results were analyzed using GLM Procedure and the means compared by Tukey’s test at the 5% significance level. No differences in production were found in the components and in the characteristics of the ovine meat and carcass of non-castrated, castrated and cryptorchid lambs raised on pasture land, fed on native grass and slaughtered young.   


Keywords


Ovine; Entire male; Castrated; Cryptorchid



DOI: http://dx.doi.org/10.5433/1679-0359.2010v31n3p783

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional