| Registro completo |
| Provedor de dados: |
R. Bras. Zootec.
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| País: |
Brazil
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| Título: |
Crude glycerin in diets for feedlot Nellore cattle
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| Autores: |
van Cleef,Eric Haydt Castello Branco
Ezequiel,Jane Maria Bertocco
D'Aurea,André Pastori
Fávaro,Vanessa Ruiz
Sancanari,Juliana Borsari Dourado
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| Data: |
2014-02-01
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| Ano: |
2014
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| Palavras-chave: |
Beef cattle
By-products
Carcass
Digestion
Glycerol
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| Resumo: |
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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000200006
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| Editor: |
Sociedade Brasileira de Zootecnia
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| Relação: |
10.1590/S1516-35982014000200006
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Zootecnia v.43 n.2 2014
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| Direitos: |
info:eu-repo/semantics/openAccess
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