Studies were carried out in order to determine the dynamics of changes in lysozyme activity in the
serum of turkey females during the laying period, and to identify the relationship between lysozyme
activity and utility parameters. The experiments were carried out on 107 randomly chosen females
from a maternal female strain (J-44), selected to increase egg production. Lysozyme activity was
determined four times, in the 6th, 12th, 18th and 24th week of the laying period. Lysozyme activity
was found to increase significantly in the 12th week, followed by a subsequent, gradual decrease. In
the 18th week of the laying period, a significant negative correlation was found between lysozyme
activity and the number of laid eggs and hatchabihty, and a significant positive correlation between
lysozyme activity and percentage of unhatched poults. Correlation between lysozyme activity and
reproductive performance in other periods was low and insignificant.
CITATIONS(5):
1.
Do birds differentially distribute antimicrobial proteins within clutches of eggs? Matthew D. Shawkey, Karl L. Kosciuch, Mark Liu, Frank C. Rohwer, Elizabeth R. Loos, Jennifer M. Wang, Steven R. Beissinger Behavioral Ecology
Early maternal effects and antibacterial immune factors in the eggs, nestlings and adults of the barn swallow N. Saino, P. Dall'ara, R. Martinelli, A. P. Møller Journal of Evolutionary Biology
Maternal immune factors and the evolution of secondary sexual characters Nicola Saino, Roberta Martinelli, Clotilde Biard, Diego Gil, Claire N. Spottiswoode, Diego Rubolini, Peter F. Surai, Anders P. Møller Behavioral Ecology
Covariation between eggshell colouration and eggshell bacteria abundance and egg characteristics in blackbirds Herbert Hoi, Alžbeta Darolová, Ján Krištofík, Miroslav Poláček, Juraj Majtán, Michal Zeman, Monika Okuliarová, Lucia Turčoková, Felix Knauer Ethology Ecology & Evolution
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