Proporção e crescimento alométrico dos componentes não carcaça de cordeiros Texel abatidos com diferentes pesos

Abstract

RESUMOEste estudo teve como objetivo avaliar a proporção em relação ao peso de corpo vazio; e o crescimento alométrico dos componentes não constituintes da carcaça de cordeiros da raça Texel terminados em confinamento e abatidos com diferentes pesos. Foram utilizados 30 cordeiros machos, não castrados e nascidos de parto simples. Os cordeiros foram desmamados com aproximadamente 50 dias de idade, confinados individualmente e distribuídos em cinco tratamentos com seis repetições, sendo cada tratamento um peso pré-estabelecido de abate (T23 -abate inicial, T25, T30, T35 e T40 kg de peso vivo). As proporções de pulmão+traquéia, abomaso, intestino delgado, intestino grosso, cabeça e patas diminuíram e a proporção de testículos aumentou linearmente de acordo com o incremento no peso de abate dos cordeiros. Os componentes corporais fígado, diafragma, rúmen, retículo, omaso, pele, língua, testículos, gordura interna e gordura renal, apresentam desenvolvimento tardio. De forma inversa, pulmão+traqueia, esôfago, coração, pâncreas, rins, baço, abomaso, intestino delgado, intestino grosso, sangue, cabeça, patas e pênis, são componentes corporais que apresentam desenvolvimento precoce. Palavras-chave: confinamento, órgãos, ovinos, vísceras Proportion and allometric growth of the non-carcass components of lambs Texel slaughtered at different weights ABSTRACTThe objective of this study was to evaluate the proportion regarding the empty body weight, and the allometric growth of noncarcass components of Texel lambs finished in feedlot and slaughtered at different weights. It was used 30 male lambs, noncastrated and simple delivered. The lambs were weaned at 50 day-old, individually confined and distributed in five treatments with six repetitions and each treatment with a predetermined slaughter weight (T23 -initial slaughter, T25, T30, T35 and T40 kg body weight). The proportions of lung+trachea, abomasum, small intestine, large intestine, head and legs decreased and the proportion of testicles increased linearly according to the improvement on the slaughter weight of lambs. The body components as liver, diaphragm, rumen, reticulum, omasun, skin, tongue, testicles, internal fat and kidney fat present late development. On the other way, lung+trachea, esophagus, heart, pancreas, kidneys, spleen, abomasum, small intestine, large intestine, blood, head, feet and penis are body components that present early development.

Animal feed based on forage cactus: use of viscera in traditional dishes. Production of by-products that can result in an economic return

“…Thus, as the study animals belonged to the same genetic pattern, the similarity between the variables is justified. Garcia et al (2014) and Carvalho et al (2017) described that the lung, heart, kidneys, diaphragm, bladder, spleen, blood, head, and paws develop early, surpassing the muscle and fat growth rate in the early stages of life, a situation that is reversed with the animal's growth, which explains the similarity between the weight of organs observed in the present study, since such organs are matured previously, regardless of the nutritional flow.…”

“…The authors assumed that the increase might have been influenced by the increase in the content of NFC in the diet, inducing, through the production of volatile fatty acids, the growth of ruminal papillae, reticular ridges, and intestinal villi, resulting in more excellent absorption by the gastrointestinal tract and subsequent conversion in edible fabrics. Carvalho et al (2017) reported late allometric growth for the rumen, reticulum, and omasum, which may be affected by the aforementioned nutritional factor. However, the authors considered that the abomasum, small intestine, and large intestine are early heterogenic.…”

Performance, carcass characteristics and non-carcass components of Santa Ines and crossbred (Santa Ines x Dorper) lambs finished in different confinement strategies

“…The variables abomasum (full and empty), rumen-full reticulum and the organs: lung/trachea, heart, spleen and tongue, were not influenced by the factors. Non-carcass components such as: omasum, rumen and reticulum, present late development, unlike the abomasum (early), and the percentages of some non-carcass components decrease with increasing live weight of animals [52]. However, the rumen-reticulum weight reached 0.80 kg, higher than those found by [53], with an average weight of 0.46 kg.…”

Rendimiento del quinto cuarto en corderos terminados en pasturas tropicales con o sin suplementación concentrada

“…Sin embargo, la eficiencia productiva de los componentes del quinto cuarto pueden ser afectados por el estado nutricional de la dieta de los animales y el nivel de ingestión de alimentos (Carvalho et al, 2007), peso vivo (Carvalho et al, 2017), sexo (Peña et al, 2005), raza (Mendonça et al, 2003), sistemas de terminación (Camilo et al, 2012), entre otros. Aunque los corderos son caracterizados por su capacidad de convertir alimentos de baja calidad en proteínas de alto valor biológico, variaciones en la concentración de suplementos y especies de forrajes en la dieta pueden presentar respuestas distintas.…”