Farelo de trigo na alimentação de poedeiras semipesadas na fase de recria
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Data
2008-01-01
Autores
Araujo, Daniel de Magalhaes [UNESP]
Vilar da Silva, Jose Humberto
de Araujo, Jose Anchieta
Magalhaes Teixeira, Elisanie Neiva [UNESP]
Jordao Filho, Jose
Gomes Ribeiro, Marcelo Luis
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ISSN da Revista
Título de Volume
Editor
Revista Brasileira Zootecnia Brazilian Journal Animal Sci
Resumo
O estudo foi conduzido com o objetivo de avaliar os efeitos da inclusão de farelo de trigo (FT) na ração sobre o desempenho de frangas semipesadas nas fases de recria 1 (7 a 14 semanas de idade) e recria 2 (15 a 19 semanasde idade) e seu efeito residual durante a fase inicial de produção de ovos. Foram utilizadas 160 frangas Lohmann Brown distribuídas em delineamento inteiramente casualizado, com quatro níveis de FT na ração: 0 (controle), 10, 20 e 30%, que resultaram em quatro tratamentos, com cinco repetições de oito aves na fase de recria 1. Ao completarem 14 semanas, as aves foram transferidas para gaiolas de arame galvanizado, redistribuídas em seis repetições de seis aves. Utilizaram-se 144 aves e descartaram-se, aleatoriamente, quatro aves por tratamento, constituindo a fase de recria 2. A adição de FT diminuiu linearmente o peso vivo final e o ganho de peso, resultando em reduções de 1,15 e 0,03 g, respectivamente, para cada 1% de inclusão de FT na ração. O consumo de água aumentou de forma quadrática e cresceu, em valores absolutos, com o aumento de 0 a 30% de farelo de trigo. A cada aumento de 1% de FT na ração, a idade das aves ao primeiro ovo elevou aproximadamente 0,6 dia e o peso do ovo em 0,22 g. A inclusão de farelo de trigo na ração reduz a taxa de crescimento de frangas, atrasa o início da postura, mas melhora o peso inicial dos ovos em relação a dietas à base de milho e de farelo de soja.
This study aimed to evaluate the effect of the inclusion of the wheat bran (WB) in the ration on egg brown chicken (Lohmann Brown) performance in the growing phase 1 (7 to 19 week of age) and growing phase 2 (15 to 19 week of age) and its residual effects on initial egg production. One hundred-sixty chickens were allotted to a completely randomized design with four level of WB in the ration: 0 (control), 10, 20 and 30%, that resulted in four treatments, with five replicates of eight birds in the growing phase 1. At the 14(th) week, the birds were transferred to galvanized wire cages and reallocated in six replicates of six birds each. A total of 144 birds were used and, randomly, four birds per treatment were discarding per treatment, constituting the growing phase 2. The addition of the WB linearly decreased the final body weight and the weight gain, resulting in decreasing of 1.15 g and 0.03g, respectively for each 1% of WB inclusion in the ration. Water intake show a quadratic effect and increased in absolute values with the addition of WB from 0 to 30%. The birds age at the first egg production and egg weight increased 0.6 day and 0.22 g, respectively for each 1% of WB in the ration. The inclusion of WB reduces chickens growth rate, delays posture starting and improves egg initial weight when compared to corn and soybean meal based diets.
This study aimed to evaluate the effect of the inclusion of the wheat bran (WB) in the ration on egg brown chicken (Lohmann Brown) performance in the growing phase 1 (7 to 19 week of age) and growing phase 2 (15 to 19 week of age) and its residual effects on initial egg production. One hundred-sixty chickens were allotted to a completely randomized design with four level of WB in the ration: 0 (control), 10, 20 and 30%, that resulted in four treatments, with five replicates of eight birds in the growing phase 1. At the 14(th) week, the birds were transferred to galvanized wire cages and reallocated in six replicates of six birds each. A total of 144 birds were used and, randomly, four birds per treatment were discarding per treatment, constituting the growing phase 2. The addition of the WB linearly decreased the final body weight and the weight gain, resulting in decreasing of 1.15 g and 0.03g, respectively for each 1% of WB inclusion in the ration. Water intake show a quadratic effect and increased in absolute values with the addition of WB from 0 to 30%. The birds age at the first egg production and egg weight increased 0.6 day and 0.22 g, respectively for each 1% of WB in the ration. The inclusion of WB reduces chickens growth rate, delays posture starting and improves egg initial weight when compared to corn and soybean meal based diets.
Descrição
Palavras-chave
age at first egg production, alternative feedstuff, performance
Como citar
Revista Brasileira de Zootecnia-brazilian Journal of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 37, n. 1, p. 67-72, 2008.