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| Moreira, Rafaele Ferreira; Freitas, Ednardo Rodrigues; Universidade Federal do Ceará; Sucupira, Francislene Silveira; Universidade Federal do Ceará; Diógenes, Alisson Lucas Freitas; Universidade Federal do Ceará; Abe, Mário Sérgio; Universidade Federal do Ceará; Araújo, Franscisco Wander Soares; Universidade Federal do Ceará. |
| The objective was to evaluate the effect of a quantitative feed restriction on the voluntary intake of hay, the performance of laying hens, and on egg quality. A total of 150 Hisex Brown laying hens at 51-weeks old were distributed into five treatments and five replications of six hens each. The treatments consisted of control, with supply of 100 g of feed bird-1 day-1 without hay; and the others consisting of a feed restriction of 5, 10, 15 and 20% of the diet offered to the birds in the control treatment, along with an ad libitum supply of cunhã hay (CH), leucaena leaf meal (LLM) and tifton hay (TH). A linear increase was found in the hay intake with increasing level of dietary restriction. However, egg production, egg weight, egg mass and feed... |
| Tipo: Pesquisa de campo e análise laboratorial |
Palavras-chave: Zootecnia Nutrição e Alimentação de não-ruminantes dietary restriction; Hay intake; Commercial laying hens; Fodder. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12451 |
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| Casartelli,EM; Junqueira,OM; Laurentiz,AC; Filardi,RS; Lucas Júnior,J; Araujo,LF. |
| An experiment was conducted to evaluate the effects of the enzyme phytase in diets formulated with different phosphorus sources on performance, eggshell quality and excretion of commercial laying hens. Two hundred and eighty-eight commercial Hyssex Brown laying hens were evaluated during two production phases, which included eight twenty-eight-day cycles, using a completely randomized design in a 3x2 factorial with six replicates of eight birds per treatment. Three phosphorus sources (calcium and sodium phosphate, micro-granulated dicalcium phosphate and triple super phosphate) and two phytase levels (0 or 1000 FTU/kg diet) were tested in the composition of the diets. After the post-peak period, triple super phosphate decreased bird performance and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Commercial laying hens; Eggshell quality; Phosphorus sources; Phytase enzyme. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200005 |
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