Economic consequences of CAV infections
The immunosuppresive effects of CAV on broilers are economically significant.
CAV is immunosuppressive, affected flocks suffer from an increase of opportunistic and/or secondary infections. Broilers may perform badly due to poor feed conversion and reduced weight gain. It has been proven that even flocks that may appear normal but suffered from a subclinical CAV infection performed less well when compared to flocks that remained negative throughout the growing period. Also infections may result in increased condemnation rates at slaughter.
The effect of a subclinical CAV infection on the performance parameters of broilers was well documented by Mc Nulty et al.
|Effect of CAV infection on Performance – % of deviation from the commercial average|
|Flock CAV status||% net income||Bonus %||Feed conversion||Weight %||Mortality %|
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