Crude glycerin in meat goat diets: intake, performance and carcass traits/Glicerina bruta na dieta de caprinos de corte: consumo, desempenho e caracteristicas de carcaca

• Published in: Ciência rural Vol. 46; no. 4; p. 719
• Main Authors: Dias, Juliano Cesar, da Silveira, Andre Luis Finkler, Lancanova, Jose Antonio Cogo, Hill, Joao Ari Gualberto, Moletta, Jose Luiz
• Format: Journal Article
• Language: English
• Published: Universidade Federal de Santa Maria 01-04-2016
• Subjects: Brasil
• ISSN: 0103-8478
• DOI: 10.1590/0103-8478cr20141489

This experiment aimed to evaluate the effect of including glycerin in kid goats diet on intake, performance and carcass traits. Twenty intact male kid goats Boer crossbred were used, with body weight of 25.06 [+ or -] 4.15kg and 8.00 [+ or -] 0.66 months old, allocated in block design, with four treatments and five replicates. The treatments consisted on including dry matter basis (DM) of the diet of four levels of glycerin: zero, five, 10 and 15%, in replacing corn. It was not reported influence (P>0.05) of level of glycerin on intake of forage and feed conversion of animals. The concentrate and total DM intake were affected (P<0.05) for the level of glycerin in DIM, with reduction in the animals that received the highest level. It was not reported influence (P>0.05) of level of glycerin on weight gain, carcass yield and percentage of cooling losses. However, the hot and cold carcass weight was lower (P<0.05) to the animals feed with 15% of glycerin. The inclusion up to 15% of glycerin in the diet of kid goats Boer crossbred, although did not affect feed conversion and performance, compromised the intake and carcass weight. Key words: boer, body weight, glycerol, kid goat. Objetivou-se avaliar o efeito da inclusao de glicerina na dieta de cabritos sobre o consumo, desempenho e caracteristicas de carcaca. Foram utilizados 20 cabritos nao castrados, mesticos Boer, com peso corporal medio de 25,06 [+ or -] 4,15 kg e 8,00 [+ or -] 0,66 meses de idade, distribuidos em blocos ao acaso, com quatro tratamentos e cinco repeticoes. Os tratamentos consistiram da inclusao de glicerina (87% de glicerol) na dieta, em substituicao ao milho, em quatro niveis de concentracao: zero, cinco, 10 e 15% na materia seca (MS). Nao foi encontrada influencia (P>0,05) da glicerina na dieta sobre o consumo de volumoso e a conversao alimentar. Os consumos de concentrado e de MS total foram afetados (P<0,05) pelo nivel de glicerina na MS, com reducao nos animais que receberam o mais alto nivel. Nao houve efeito (P>0,05) dos niveis de glicerina para ganho de peso, rendimento de carcaca e perdas por resfriamento. Entretanto, houve efeito (P<0,05) para peso da carcaca quente e fria para os animais alimentados com 15% de glicerina. A inclusao de ate 15% de glicerina na dieta de cabritos mesticos Boer, embora nao afete a conversao alimentar e o desempenho, compromete o consumo e o peso da carcaca dos animais. Palavras-chave: boer, cabrito, glicerol, peso corporal.