Desempenho produtivo de cabritos alimentados com glicerina bruta

Abstract

RESUMOAvaliou-se o desempenho produtivo de cabritos mestiços terminados em confinamento, alimentados com dietas contendo glicerina bruta (0, 4, 8 e 12% na MS). Vinte cabritos mestiços foram utilizados em blocos completos, casualizados com quatro tratamentos e cinco repetições, para determinação do ganho médio diário (GMD), consumo de matéria seca (CMS) e nutrientes (PB, FDN, EE) e comportamento ingestivo. Para o ensaio de digestibilidade, foram utilizados quatro caprinos alocados em delineamento em quadrado latino, para determinação da digestibilidade da MS e nutrientes (PB, FDN, EE). A adição de glicerina bruta não interferiu (P>0,05) no GMD e no CMS e demais nutrientes. O tempo de ingestão aumentou com o incremento de glicerina bruta nas dietas. Não houve diferença significativa (P>0,05) dos tratamentos sobre o tempo gasto na ruminação e digestibilidade da MS, PB e FDN, contudo, houve efeito quadrático para a digestibilidade do EE. Recomendase a inclusão em até 12% de glicerina bruta para cabritos em terminação, em situações de oscilação do preço do milho, sem alteração nos parâmetros produtivos avaliados. ABSTRACT This study was conducted to evaluate the productive performance of crossbred goats finished in feedlots fed diets containing increasing levels of crude glycerin (0, 4, 8 and 12%, DM basis). Twenty crossbred goat kids were used in a randomized complete block design with 4 treatments and 5 replications to determine average daily gain (ADG), dry matter intake (DMI) and nutrients (CP, NDF, EE) and ingestive behavior. For digestibility trial, four castrated male goats were used in a Latin Square Design to determine the DM and nutrients digestibility. Crude glycerin did not affect (P>0.05) the ADG, DMI and nutrients intake. Eating time increased linearly (P<0.05) with crude glycerin addition. Rumination time and dry matter and nutrients digestibility were unaffected by crude glycerin addition. However was a quadratic effect (P<0.05) to EE digestibility. It is recommended adding up to 12% crude glycerin to finishing kids, in situations of high price of corn, without changes in production parameters evaluated.

Crude glycerin in meat goat diets: intake, performance and carcass traits

“…The results presented are similar to those described by CORREIA et al (2006), observed in crossbred female kid goats, Saanen x Crioula, feedlot and fed with pineapple agro-industrial residue, a FC varying from 5.62 to 5.97kg MS kg -1 of weight gain. The inclusion of up to 15% of glycerin in the DM of the diet had no effect on the exploitation and conversion of dry matter in body weight by the animals, corroborating the findings by SANTOS et al (2015). Table 3 presents the initial and final averages body weight, daily weight gain (DWG) and characteristics of the carcass of goats fed with diet containing different levels of glycerin inclusion.…”

Production and economic analysis of milk from goats fed with double-distilled glycerin

“…According to Dias et al (2016) the inclusion up to 15% of glycerin in the diet of kid goats Boer crossbred, although does not affect feed conversion and performance, compromises the intake and carcass weight. This same trend was observed by Santos et al (2015) who, when evaluating the productive performance of kids fed with crude glycerin, found that diets containing increasing levels of 0; 4; 8; and 12% of glycerin replacing corn also did not significantly influence (P > 0.05) the dry matter intake.…”