Características de carcaça de caprinos terminados com diferentes níveis de suplementação concentrada e mantidos em caatinga enriquecida com Urochloa trichopus

Jean Francisco Pereira Gama; José Morais Pereira Filho; George Vieira do Nascimento; Marcilio Fontes Cezar; Severino Gonzaga Neto; Rosa Maria dos Santos Pessoa; Joyanne Mirelle de Sousa Ferreira; Maiza Araújo Cordão

doi:10.1590/1809-6891v23e-71730E

Authors

Jean Francisco Pereira Gama Escola Cidadã Integral Técnica (ECIT) Arlinda Pessoa da Silva, Juru, PB, Brasil https://orcid.org/0000-0002-5268-1886
José Morais Pereira Filho Universidade Federal de Campina Grande (UFCG), Patos, Paraíba, Brasil https://orcid.org/0000-0002-9683-4565
George Vieira do Nascimento Instituto Nacional do Semiárido (INSA), Campina Grande, Paraíba, Brasil https://orcid.org/0000-0003-3548-3615
Marcilio Fontes Cezar Universidade Federal de Campina Grande (UFCG), Patos, Paraíba, Brasil https://orcid.org/0000-0003-3746-3917
Severino Gonzaga Neto Universidade Federal da Paraíba (UFPB), Areia, Paraíba, Brasil https://orcid.org/0000-0003-4220-4071
Rosa Maria dos Santos Pessoa Universidade Federal da Paraíba (UFPB), Areia, Paraíba, Brasil https://orcid.org/0000-0002-8898-9161
Joyanne Mirelle de Sousa Ferreira Universidade Federal de Campina Grande (UFCG), Patos, Paraíba, Brasil https://orcid.org/0000-0002-1371-1798
Maiza Araújo Cordão Faculdades Nova Esperança, João Pessoa, Paraíba, Brasil https://orcid.org/0000-0002-5645-1869

DOI:

https://doi.org/10.1590/1809-6891v23e-71730E

Abstract

The objective of this study was to evaluate the carcass traits of crossbred F1 goats (Boer x non-descript breed) finished on thinned caatinga pasture enriched with signal grass (Urochloa trichopus Stapf.), and receiving supplementation. Twenty-four crossbred F1 goats with 27.00 ± 3.32 kg body weight were used. The supplement was designed to meet the nutritional requirements and animals receiving the highest supplementation level could gain 150g per day. For data analysis, a completely randomized design was adopted, with four treatments (supplementation levels of 0.0%; 0.5%; 1.0% and 1.5% body weight) and six replications (animals). Data were subjected to analysis of variance and regression. Supplementation resulted in an increasing linear effect for slaughter weight, hot carcass weight, cold carcass weight, empty body weight, hot carcass yield and cold carcass yield; and a quadratic effect for biological yield. Weight loss by cooling was not influenced by supplementation. For the results of subjective evaluations, only conformation was influenced by supplementation (P<0.05). For morphometry, a positive linear effect of supplementation was found for thorax perimeter, croup perimeter, croup width, thorax width. The level of supplementation caused a positive linear effect on the weight of most non-edible carcass components, and there was no influence of supplementation on most variables for yield. It can be concluded that increasing levels of supplementation up to 1.5% body weight for F1 goats (Boer x non-descript breed) kept on caatinga pasture results in higher carcass weight and yield.
Keywords: Boer; carcass conformation; carcass quality; native pasture; pasture supplementation

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