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Relationship between Serum Alkaline Phosphatase Activity and Growth Performance in Different Duck Breeds

YANG Wei-ping et al(Life Science Department,Luoyang Normal College,Luoyang,Henan 471022)  
[Objective]To study the relationship between serum alkaline phosphatase(AKP) activity and growth performance in different species of duck and provide an assisted selection marker for duck early selection.[Method]A total of 60 black Muscovy ducks,60 Cherry Valley ducks,and 60 Gaoyou ducks were selected in the present study,half male and half female.Venous blood collection was performed from duck wing at 7 and 10 weeks old.The serum AKP activity of each duck was determined using benzene disodium phosphate method.[Result]The serum AKP activity of black Muscovy duck was significantly higher than that of Cherry Valley duck and Gaoyou duck(P0.01),while the serum AKP activity between Cherry Valley duck and Gaoyou duck was not significantly different.The serum AKP activities in three varieties of duck were all positively correlated with the average daily gain at 7 and 10 weeks old.Especially,the overall correlation coefficient were 0.401 at 7 weeks old,which reached significant level(P0.01).However,the overall correlation coefficient did not reached significant level at 10 weeks old.[Conclusion]Serum AKP activity can be used as an assisted selection marker for duck breeding.
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