Data/hora: 30/05/2024 13:52:09

Provedor de dados: | 52
País: | Brazil
Título: | Performance of calves submitted to protocols using extruded or ground starter
Autores: | Chaves,Amália Saturnino; Costa,Suely de Fátima; Melo,Leandra Queiroz de; Pereira,Marcos Neves.
Data: | 2014-10-01
Ano: | 2014
Palavras-chave: | Milk-feeding period; Grain processing; Reticulorumen.
Resumo: | Feed processing can affect rumen development in new born calves, and potentially define animal performance. Two feed management systems, extruded starter (Ruter) with possible early weaning and ground starter (control), were evaluated in thirty-two Holstein calves (16 females and 16 males). Animals were randomly assigned to the treatments using a randomized block design with birth weight as a covariate. They were weaned when starter intake reached 800 g for two consecutive days. Twenty-one days after the weaning, males were slaughtered and the stomach compartments were isolated. Rumen and omasum fragments were processed for morphological evaluation. Animal performance, clinical condition and stomach compartment weight did not differ between the treatments (P&gt; 0.05), despite weaning weight of animals receiving extruded starter being 5.68% higher than the control animals. Extruded starter stimulated cell proliferation of the ruminal epithelium (P &lt;0.05), but did not affect the dimensions of the papillary rumen and omasum mitotic index (MI). The Ruter feeding system was potentially beneficial for weight gain and morphofunctional rumen development in lactating animals; however, this treatment did not allow early weaning as proposed by the feeding system.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500695
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-8913201401909
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.57 n.5 2014
Fonte: | info:eu-repo/semantics/openAccess