RESUMO Objetivou-se avaliar o efeito da inclusão de níveis de glicerina bruta na alimentação de cordeiros nas características biométricas e histológicas testiculares. Foram utilizados 24 cordeiros não castrados, confinados com 93,79 ± 5,73 dias de idade e peso corporal de 20,22±2,84kg. Os tratamentos testados foram: 0; 2,5; 5,0 e 7,5% de inclusão de glicerina bruta na matéria seca da dieta em substituição ao milho. Os animais foram abatidos usando a condição corporal como critério em escore de 2,5 a 3,5, em uma escala que varia de 1 a 5, sendo que as variáveis avaliadas foram o peso inicial, peso final, peso de carcaça quente, espessura de gordura de cobertura, condição corporal, e os parâmetros biométricos testiculares: perímetro escrotal, peso testicular no escroto, peso dos testículos direito e esquerdo, volume dos testículos direito e esquerdo, largura testicular, comprimento testicular, diâmetro de túbulo seminífero e altura de epitélio germinativo. Não houve influência significativa dos níveis de glicerina bruta sobre nenhuma das variáveis analisadas, também não houve correlação entre as características avaliadas com a condição corporal. Foram observadas correlações positivas entre o peso de carcaça quente e espessura de gordura de cobertura (r=0,57, p<0,05). Houve correlação positiva (r=0,55, p<0,05)) entre perímetro escrotal e peso corporal. O diâmetro do túbulo (r=0,47, p<0,05) e a altura do epitélio seminíferos (r=0,62, p<0,05) estiveram correlacionados com o volume testicular. A inclusão de níveis crescentes de glicerina bruta na alimentação de cordeiros Pantaneiros até 7,5% de inclusão não influencia nas características biométricas e histométricas testiculares dos animais.
This study aimed to evaluate visual contamination rates of carcasses of broilers slaughtered in establishments supervised by the Federal Inspection Service (SIF) and efficiency of carcass washing in replacement of trimming. The work was divided into three parts: analysis of partial and total carcass condemnation by contamination in hot (October to March) and cold (April to September) periods; evaluation of microbiological contamination before and after washing 800 carcasses (400 that did not go through washing x 400 that went through washing); and carcass washing test. For the test, twenty carcasses were evaluated in five treatments: carcasses without contamination-before washing; carcasses without contamination-after washing; contaminated carcasses-before washing and before trimming; contaminated carcasses-after washing; contaminated carcassesafter trimming. Hot and cold periods obtained a similar number and weight of slaughtered chickens. There were no differences regarding condemnation by contamination. Periods of the year did not influence the average weight of the birds slaughtered in the state of Mato Grosso do Sul. Carcass washing in the slaughter line was effective in reducing total bacterial contamination, E. coli, and enterobacteria. There is a similarity in the reduction of condemnations by contamination, evidencing that the uniformity of production systems. Although it is not yet a reality in Brazilian slaughterhouses, the washing procedure can be considered a safe replacement for trimming.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.