An experiment was conducted to establish the nutritional requirements of methionine+cystine (Met+Cys) for white-egg and the brown-egg layers hens in the second production cycle. Two hundred and twenty eight Lohmann Selected Leghorn and 288 Lohmann Brown laying hens were submitted to forced molting at the 76 weeks of age, were used. A completely experimental randomized experimental design was used. The treatments consisted of two egg laying strains and six Meth+Cys levels, with six replicates and eight birds per experimental unit. […]

This work aimed to establish lysine requirements for white-egg (Lohmann Selected Leghorn) and brown-egg (Lohmann Brown) layers hens in the second producing cycle, from 83 to 98 weeks of age. A completely randomized design with six replicates and eight birds per experimental unit was used. The treatments consisted in a 2 x 6 factorial involving two commercial lines and six lysine levels. The birds were fed diets containing 2860 kcal of ME/kg, 14.37% CP, and .50% lysine, supplemented with six […]