Brand new onset of eggs laying to have hens was influenced by genotype, health muscles updates and you may ecological conditions. Regional breeds (white eggshell types-Padovana and you may Polverara; shaded eggshell breeds-Pepoi, Ermellinata di Rovigo, Robusta Maculata and you can Robusta Lionata) on Veneto region, from inside the Northern Italy, was basically reared external away from spring season (6 weeks of age; six WA) to help you trip and you may winter. The brand new start of installing ranged with respect to the breed (22–twenty-eight WA): just the tinted eggshell types been laying at the end of summer/beginning of fall, regarding presence of a reducing sheer photoperiod, while the egg production lasted for the majority months. During the 38 WA, phony white is slowly put in the fresh photoperiod to get 14L:10D, at 42 WA, every half a dozen breeds was indeed installing. To possess hens reared outside, relations one of ecosystem, body times and you may health standards should be considered. The information and knowledge with the effective give and you will eggs quality of the fresh new local reproduce hens are useful on the management of the brand new wild birds and also for an acceptable supply of eggs, for market as well as brooding all year long.

Abstract

The month of hatching and the rearing management, especially temperature and photoperiod, are important factors for pullets and hens reared outdoors. The yield performance and egg quality of dual-purpose chicken breeds from the Veneto region (Italy), Pepoi (PP), Ermellinata di Rovigo (ER), Robusta Maculata (RM) and Robusta Lionata (RL), with different adult body weights (ABW, kg, PP = 1.3; ER = 2.3, RM and RL = 3.1), were studied, using a factorial model (4 ? 2), considering breed and age (26–33 weeks, first age, summer–autumn, under decreasing natural photoperiod-on average, 12L:12D, and 42–53 weeks, second age, winter, under implemented photoperiod-14L:10D) as the main effects and interaction. Continue reading “A study to the Egg Creation and you can High quality With regards to the Many years of Five Italian Poultry Twin-Purpose Purebred Hens Reared External”