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Serum alkaline phosphatase and egg production

, : Serum alkaline phosphatase and egg production. Proc. Xllth World's Poult. Congr, Sydney, N.S.W

The h2 of serum alkaline phosphatase (SAP) level in 6-wk-old randombred White Leghorns, estimated from sire + dam variance components, was 0.36. The genetic correlation between SAP level and egg production was 0.50 and the phenotypic correlation 0.01. Selection of a high SAP line was carried out on the basis of levels at 6 wks. and after 4 generations of selection levels increased almost 3-fold. Birds chosen from the high line as being individuals with high 6-wk.


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