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Body weight and enzymes activities in blood plasma of chickens hatched from eggs irradiated with low level gamma rays before incubation

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Author(s): Kraljević Petar | Vilić M. | Miljanić S. | Šimpraga M.

Journal: Acta Veterinaria
ISSN 0567-8315

Volume: 59;
Issue: 5-6;
Start page: 503;
Date: 2009;
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Keywords: gamma radiation | low dose | chickens | body weight | blood plasma | enzymes

ABSTRACT
An attempt was made to determine the effect of eggs irradiation by low dose gamma radiation upon body weight (BW), body weight gain (BWG), feed consumption (FC) and feed conversion ratio (FCR) of chickens hatched from irradiated eggs. Our aim was also to investigate the activity of aspartate aminotransferase (AST), alanine aminotransferase (ALT), acid phosphatase (ACP) and alkaline phosphatase (ALP) in the blood plasma of those chickens. The eggs of heavy breed chickens were irradiated with a dose of 0.15 Gy gamma radiation (60Co) before incubation. Along with the chickens which were hatched from irradiated eggs, there was a control group of chickens hatched from nonirradiated eggs. All other conditions were the same for both groups of chickens. BW of chickens was measured by a single weighting of chickens on the 1st and 42nd day of the fattening period. An average BWG was calculated from the obtained results during the whole fattening period (i.e. from the 1st until the 42nd day). FC was measured each day during the fattening time and total feed consumption was calculated. On the basis of FC and BW, FCR was calculated (FC/BWG). Blood samples were taken from the right jugular vein on the 1st and 3rd day, or from the wing vein on days 5, 7, 10, 20, 30 and 42. The activity of all enzymes was determined spectrophotometrically by using reagents according to recommendations of the International Federation of Clinical Chemistry and Laboratory Medicine. BW of chickens hatched from irradiated eggs was statistically significant higher than in the controls during the fattening period; on day 42 of fattening, BW of the experimental chickens was 90 g (i.e. 4.8 %) higher than in the controls (P
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