STUDIES ON THE PRODUCTIVE PERFORMANCE OF HUBBARD ROOSTERS IN THE POST-CAPONISATION PERIOD

Cipriana Maria Cuciureanu, M.G. Usturoi, R.M. Radu-Rusu, L.C. Burtan, M. Fântânaru

Abstract
    Capons are male chickens whose testicles have been surgically removed, resulting in deficiencies in the production of androgen hormones, the effect materializing in a very efficient conversion of feed, fat deposits mainly in the abdominal area and high quality meat. The research took into account the productive performance of Hubbard roosters in the post-claping period. In this sense, were constituted two groups of birds, the experimental group LE consisting of 20 heads and the control group LM consisting of 10 roosters. At the age of 6 weeks, the rooster of LE underwent the operation of removing the testicles (claponisation) by the surgical method, making an incision in the last intercostal space. At the end of the study period (12th week of life) the mortality rate was 60% for LE, the average growth rate was 1334 g / head / period, an average daily consumption 127.46 g / head / day and a value of the feed conversion index 3.32 kg nc / kg body weight. As for the LM roosters, the average growth increase recorded in the same period was 1789.5 g / head / period, with an average daily consumption of 127.75 g / head / day and feed conversion rate 2.47 kg nc / kg corp.