Data/hora: 02/06/2024 06:23:31

Provedor de dados: | 96
País: | Brazil
Título: | Type of corn and grinding degree in a concentrate supplied to suckling calves
Autores: | Ferreira,Cibele Santos; Silva,Fabiano Ferreira da; Veloso,Cristina Mattos; Bonomo,Paulo; Oliveira,Julinessa Silva; Silva,Vinícius Lopes da; Schio,Alex Resende; Ítavo,Luís Carlos Vínhas.
Data: | 2012-06-01
Ano: | 2012
Palavras-chave: | Dent corn; Early weaning; Flint corn; Initial concentrate.
Resumo: | The objective was to assess the effects of a concentrate consisting of two types of corn: flint and dent, with three different grinding degrees (1, 3 and 5 mm), as a function of intake, performance and digestibility of three crossbred dairy suckling heifers. A randomized block design involving 54 crossbred heifers in a 2 × 3 factorial arrangement was used to assess intake and performance patterns. In order to assess digestibility, the experimental design was completely randomized, consisting of 24 crossbred heifers. Weighting and measurements of height at withers and thoracic perimeter were performed. There was no significant interaction between grinding degree and corn type for any of the studied variables. The daily intake of concentrate dry matter was higher for flint corn (243 g/day) as compared with dent corn (160 g/day). The grinding degree caused difference in the dry matter, crude protein and ether extract intake, with higher intake when 3 and 5 mm sieves were used in the process. There was no difference regarding average daily gain and increased withers, croup and thoracic perimeter. Likewise, feed conversion did not differ. Regarding dry matter digestibility, there was an effect resulting from the hardness of corn (78.9% for dent, and 84.3% and for flint corn). As for the grinding degree, the highest value of dry matter digestibility was found when using 5 mm sieves (84.2%), whereas the percentage values found for 1 mm and 3 mm mesh sieves were 79.1% and 78.1%, respectively. It is recommended that heifer calves in the early stage of growth be fed flint corn ground through 3 or 5 mm mesh sieves.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600024
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982012000600024
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.41 n.6 2012
Fonte: | info:eu-repo/semantics/openAccess