Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Liubov LІAKHOVICH, Yuliia MASLAK, Iryna HONCHAROVA, Alla PETRENKO, Inna KOSTYUK
In private mini-poultry farms, poultry that have recovered from infectious bronchitis are often not culled. Changes in the organs of the reproductive system of adult chickens and roosters that recovered after an outbreak of infectious bronchitis were studied. It was found that in most of the flock, egg productivity and condition quality of eggs were preserved in laying hens (69%), and in roosters - fertilization ability (after hatching the eggs, hens hatched condition chicks with 80% hatchability). In 31% of hens, egg productivity and/or egg quality was impaired: reduced laying; hens laid eggs with soft and/or deformed shells; there was no clear boundary between the dense and liquid layers of the egg white; the share of second-grade eggs has increased. During the post-slaughter examination of chicken carcasses, various pathologies of the reproductive organs were found: retention of the egg in the oviduct and damage to its walls (it is possible that this is due to calcareous growths on the eggshell); ovarian cysts; atresia of mature follicles.
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