Data/hora: 26/06/2024 15:57:26

Biblioteca(s): | Epagri-Sede.
Data corrente: | 09/03/2015
Data da última atualização: | 09/03/2015
Autoria: | van CLEEF, E. H. C. B.; EZEQUIEL, J. M. B.; D'AUREA, A. P.; FAVARO, V. R.; SANCANARI, J. B. D.
Título: | Crude glycerin in diets for feedlot Nellore cattle.
Ano de publicação: | 2014
Fonte/Imprenta: | Revista Brasileira de Zootecnia, Brasilia, DF, v. 43, n. 2, p. 86-91, 2014.
Idioma: | Inglês

Conteúdo:

Two studies were conducted to evaluate the effects of crude glycerin on feed intake, performance, carcass
characteristics, and total digestibility of Nellore bulls. In experiment 1, cattle (n = 30) were fed a control diet without crude
glycerin and diets containing 7.5, 15, 22.5, and 30% crude glycerin, for 103 d. Animals were harvested and data of carcass
characteristics were collected. In experiment 2, a digestibility trial was performed using indigestible acid detergent fiber (iADF)
as internal marker, and five rumen-cannulated steers. Both experiments were conducted as a randomized complete block design
and data were analyzed using mixed procedures. In experiment 1 no differences were observed among treatments on dry matter
intake, and performance variables. Regarding carcass characteristics, no effect was observed, except for carcass fat estimates,
which were greater in treatments with crude glycerin. In experiment 2, crude glycerin promoted a decrease in digestibility
of fibrous fractions NDF and HEM, and increased digestibility of crude protein by 6%. Although it caused negative effect
on digestibility of fibrous fraction of diets, crude glycerin can be a good energy source for Nellore bulls, since no losses are
observed on performance and carcass characteristics when animals are fed up to 30% of this by-product.

Palavras-Chave: | beef cattle; by-products; carcass; digestion; glycerol.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_35810.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (98286-1) - UPC - AP - DD -  -  -  - DIS