RESEARCHES CONCERNING THE CAUSES OF OUTPUTS IN THE EFFECTS OF HERBAL BLOOD CHICKEN

Elena Hriscu (Ursu), Irina Elena Ismană (Ciobotaru), M.G. Usturoi

Abstract
    The study was conducted in two chicken broiler breeding units divided into two seasons (one summer and one winter) and the losses from the flock and their causes were observed from day one to the day 40th (before slaughter).
    The outbreak situation in chickens in Unit A was very good, with levels of 2.38% in the hot season and 2.14% in the cold.
    In the hot season, the causes of mortality due to handling and transport were 40.33% (173 caps); from the causes of post-vaccine reactions the mortality was 12.95% (53 caps) and due to bacterial infections was a with 30.16% meaning a 168 head, these infections being caused by bacteria of the genus Escherichia coli and Staphylococuss spp.
    For the last period of growth (28-40 days), the losses in the herd were due to the high density of the chickens due to weight gain, but they were smaller and sporadic, accounting for only 8.16% (35 caps).
    In the cold season, mechanical outbreaks / incubation defects were 249 head. (57.91%), post-vaccination reactions 72 head (16.74%) and bacterial causes caused by bacteria of the genus Escherichia coli and Staphylococuss spp. were 109 head (25.35%).
    The outbreak situation in B units was 2.4% in the warm season and 2.0% in the cold season.
    In the warm season due to mechanical accidents and incubation defects, the mortality was 57.21% (278 caps); the causes of bacterial outflows were 21.19% (103 caps), infections caused by bacteria of the genus Escherichia coli and Staphylococuss spp.
    Other causes that determined mortality were post vaccination reactions, totaling 72 head (14.81%) and due to increased density towards the end of the growth period, mortality of 33 head was recorded. (6.79%).
    The results of the losses in the cold season obtained by mechanical and incubation defects were 280 head. (68.13%), the outcomes due to bacterial infections were 23.84% (98 caps), which were determined by bacteria of the genus Escherichia coli and Staphylococuss spp., Due to increased density during the last period of growth, the losses were of 8.03% (33 caps).
    Outflows from the two units under study were below the 5% maximum as specified in the ROSS 308 Hybrid Growth Guide, demonstrating that growth technology was appropriate.

Key words: cause of exits, biosecurity, broiler chickens, growing farm