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| Gonçalves,Ana Paula; Nascimento,Carolina Fernanda Moysés do; Ferreira,Fernanda Altieri; Gomes,Rodrigo da Costa; Manella,Marcelo de Queiroz; Marino,Carolina Tobias; Demarchi,João José Assumpção de Abreu; Rodrigues,Paulo Henrique Mazza. |
| Replacing regular urea (RU) by slow-release urea (SRU) at two levels of non-protein nitrogen (NPN) in concentrate, offered with low-quality roughage, was evaluated in beef steers on dry matter intake (DMI), ruminal fermentation parameters, plasma urea nitrogen (PUN), total tract apparent digestibility of diets and in situ degradability of nitrogen sources. Eight ruminally cannulated steers were allocated into two 4x4 Latin squares, totalizing four treatments: 40 NPN/0 SRU: 40% of concentrate crude protein (CP) as NPN, resulting from 0% of SRU and 100% of RU; 40 NPN/50 SRU: 40% of concentrate CP as NPN, resulting from 50% of SRU and 50% of RU; 40 NPN/100 SRU: 40% of concentrate CP as NPN, resulting from 100% of SRU and 0% of RU; 80 NPN/100 SRU: 80% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Controlled release; Feed intake; Non-protein nitrogen; Short chain fatty acids. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100022 |
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