Carcass and non-carcass components of lambs fed with Cenchrus ciliaris and Mimosa tenuiflora

Abstract

The objective of this study was to evaluate the characteristics of carcass and the non-carcass components of lambs fed with different proportions of buffel grass hay (Cenchrus ciliaris L.) and 'jurema preta' (Mimosa tenuiflora (Willd.) Poir.). The study was developed at the Federal University of Campina Grande, Campus of Patos-PB. Twenty-eight uncastrated lambs with initial body weight of 20 ± 2.49 kg were used. The treatments were the different proportions of 'jurema preta' hays (BJH) and buffel grass hay (BGH) in the bulky portion of the diet: 0% of BJH + 100% of BGH; 33% of BJH + 67% of BGH; 67% of BJH + 33% of BGH; 100% of BJH + 0% of BGH. A quadratic effect was observed for loin eye area, conformation and GR measure ("grade rule"). The thickness measurements of subcutaneous fat and marbling presented negative linear behavior, with the substitution of BGH by BJH. The substitution of BGH in the proportion of 20 to 50% by the BJH of the bulky portion in the lambs' diet allows for a good conformation, loin eye area and non-carcass components.Key words: liver, morphometry, sheep, bulky Carcaça e não constituintes de cordeiros alimentados com capim-buffel e jurema-preta RESUMO Objetivou-se avaliar as características de carcaça e seus não constituintes, de cordeiros alimentados com diferentes proporções de feno de capim-buffel (Cenchrus ciliaris L.) e jurema-preta (Mimosa tenuiflora (Willd.) Poir.). O estudo foi desenvolvido na Universidade Federal de Campina Grande, Campus de Patos-PB. Foram utilizados 28 cordeiros, não castrados, com peso corporal inicial de 20 ± 2,49 kg. Os tratamentos foram as diferentes proporções dos fenos de jurema-preta (FJP) e feno de capimbuffel (FCB) na porção volumosa da dieta: 0% de FJP + 100% de FCB; 33% de FJP + 67% de FCB; 67% de FJP + 33% de FCB; 100% de FJP + 0% de FCB. Observou-se efeito quadrático para área de olho de lombo, conformação e medida GR ("grade rule"). As medidas espessura de gordura subcutânea e marmoreio apresentaram comportamento linear negativo, com a substituição do FCB pelo FJP. A substituição do FCB na proporção de 20 a 50% pelo FJP da porção volumosa na dieta de cordeiros permite uma boa conformação, área de olho de lombo e não constituintes da carcaça.

Low-purity crude glycerin as a nutrient substitute for corn: the effect on yields of goat organs and viscera

“…On the other hand, the liver and spleen have high metabolic rates and require further development to meet the demand for nutrient metabolism. Their respective sizes are related to the higher nutrients intake by the animal, especially energy and protein (Silva et al, 2016).…”

Performance and carcass characteristics of Santa Inês lambs fed different protein sources

“…In the semiarid region, sheep farming is an activity of fundamental social and economic importance, being responsible for providing food of high biological value and bringing income to the population (Lira et al, 2017)., However, it is a region characterized by short periods of rain and long periods of drought that directly reflects on the supply of food and the nutritional value of forages (Silva, Pereira Filho, Bandeira, & Cordão, 2016a;Oliveira, Ferreira, Freitas, Urbano, & Silva, 2017), in addition to the fact that the herds in this region still present animals without a defined racial pattern that have low productive rates throughout the year. Thus, due to hereditary, nutritional factors and the environment in which the animal is inserted, the supply of meat to the market becomes irregular and the carcasses are of low quality, making it difficult to standardize and value them (Esteves et al, 2018;Silva, Lopes Neto, Costa, Furtado, Miranda, 2018).…”