Desempenho e qualidade dos ovos de diferentes linhagens de poedeiras comerciais pós-muda forçada recebendo rações com níveis variáveis de cálcio

• Autor(a) principal: Albano Jr., Milton
• Data de Publicação: 2000
• Outros Autores: Albuquerque, Ricardo, Lima, César Gonçalvez, Ghion, Esleibe, Lima, Félix Ribeiro, Morais, Cintra Suzane Dias
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Journal of Veterinary Research and Animal Science
• Texto Completo: https://www.revistas.usp.br/bjvras/article/view/5810
• topic: Linhagens; Galinhas poedeiras; Muda; Cálcio; Desempenho; Lines; Laying hens; Moult; Calcium; Performance

One experiment was conducted to study performance of laying hens of four strains after forced molt: Lohmann White, Babcok, Embrapa-011 (light weight) and Lohmann Brown (semi-heavy weight). Different levels of calcium were applied during the production period (2, 3, 4, 5 and 6%), the experimental design was a random block design with whole 400 birds. Hens were 74 week old at the beginning of the molt phase. The birds fed 2% of calcium showed lower feed consumption and lower egg production. The highest levels of calcium increased the egg shell quality. The color of egg yolk was lower for levels 2 and 6% of calcium. Egg weight, Haugh unit and egg yolk color were related to strain, and the Embrapa-011 showed the lower performance among strains.