Data/hora: 05/06/2024 09:08:35

Provedor de dados: | 65
País: | Brazil
Título: | Concentrate intake and performance of dairy calves subjected to programs of supplementary lighting
Autores: | Almeida,Gledson Luiz Pontes de; Pandorfi,Héliton; Baptista,Fátima; Guiselini,Cristiane; Ferreira,Marcelo de Andrade; Cruz,Vasco Fitas.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Animal performance; Dairy cattle; Light duration; Weight gain.
Resumo: | ABSTRACT: This research aimed to assess Girolando calves’ concentrate intake and performance when placed in shelters with distinct roofing materials and programs of supplementary lighting during the milk-feeding stage. In order to so, we used a completely randomized design with a 3×3 factorial arrangement, with three replications. Females Girolando calves (n=27) were assigned in individual shelters at random with 3 different roofing materials (fiber cement tile, recycled tile and thatched roofs) and subjected to three lighting programs (12, 16 and 20 hours). No interaction was observed between roofing material and lighting programs, whilst no significant effect (P&gt;0.05) was observed among the roofing materials. The supplementary lighting, by providing greater light exposure time, has stimulated intake and therefore, significantly affected (P&lt;0.05) the concentrate intake and performance of the animals that were subjected to 20 hours of light.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900651
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20160726
Formato: | text/html
Fonte: | Ciência Rural  v.47 n.9 2017
Fonte: | info:eu-repo/semantics/openAccess