Exigência nutricional de lisina para poedeiras leves e semipesadas nos períodos de 1 a 3 e de 4 a 6 semanas de idade
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Data
2006-06-21
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Revista Brasileira de Zootecnia
Resumo
Com o objetivo de determinar a exigência nutricional de lisina para poedeiras leves e semipesadas em crescimento nos períodos de 1 a 3 e de 4 a 6 semanas de idade, foram utilizadas 480 aves no período de 1 a 3 semanas de idade e 432 aves no período de 4 a 6 semanas de idade. Em ambos os períodos, foram utilizadas aves Hy Line, 50% Hy-line W 36 (leves) e 50% Hy-line Brown (semipesadas), em delineamento inteiramente casualizado, em esquema fatorial 6 × 2, composto de seis níveis de lisina (0,00; 0,06; 0,12; 0,18; 0,24 e 0,30%) e duas linhagens de aves de postura. Considerando os resultados obtidos para as variáveis analisadas, a exigência de lisina total para o período de 1 a 3 semanas de idade foi 1,052% para aves leves e de 0,981% para aves semipesadas ou 207,38 mg de lisina total/dia para aves leves e 198,63 mg de lisina total/dia para aves semipesadas. Para o período de 4 a 6 semanas, a exigência de lisina foi de 0,939% de lisina para aves leves e de 0,889% de lisina para aves semipesadas ou 323,30 mg de lisina total/dia para aves leves e 300,29 mg de lisina total/dia para aves semipesadas.
With the objective of determine the nutritional requirement of lysine for growing white-egg and brown-egg laying hens in the period from 1 to 3 and 4 to 6 weeks of age, 480 birds were used in the period from 1 to 3 weeks of age and 432 birds in the period from 4 to 6 weeks of age. In both periods, Hy-line birds were used; 50% Hy-line W 36 (White) and 50% Hy-line Brown in completely randomized design in a 6 × 2 factorial arrangement (level of lysine [0.00, 0.06, 0.12, 0.18, 0.24, and 0.30%] and strains of laying hens). Based on the obtained results for the analyzed variable, the total lysine requirement for the period from 1 to 3 weeks of age was 1.052% for white birds and 0.981% brown birds or 207.38 mg of total lysine/day for white birds and 198.63 mg of total lysine/day for brown birds. For the period from 4 to 6 weeks of age the lysine requirement was 0.939% for white birds and 0.889% for brown birds or 323.30 mg of total lysine/day for white birds and 300.29 mg of total lysine/day for brown birds.
With the objective of determine the nutritional requirement of lysine for growing white-egg and brown-egg laying hens in the period from 1 to 3 and 4 to 6 weeks of age, 480 birds were used in the period from 1 to 3 weeks of age and 432 birds in the period from 4 to 6 weeks of age. In both periods, Hy-line birds were used; 50% Hy-line W 36 (White) and 50% Hy-line Brown in completely randomized design in a 6 × 2 factorial arrangement (level of lysine [0.00, 0.06, 0.12, 0.18, 0.24, and 0.30%] and strains of laying hens). Based on the obtained results for the analyzed variable, the total lysine requirement for the period from 1 to 3 weeks of age was 1.052% for white birds and 0.981% brown birds or 207.38 mg of total lysine/day for white birds and 198.63 mg of total lysine/day for brown birds. For the period from 4 to 6 weeks of age the lysine requirement was 0.939% for white birds and 0.889% for brown birds or 323.30 mg of total lysine/day for white birds and 300.29 mg of total lysine/day for brown birds.
Descrição
Palavras-chave
Aminoácidos, Crescimento, Exigência lisina, Poedeiras comerciais