title: The activity of aldolase, aspartate aminotransferase and the level of glucose in the blood plasma of chickens of various breeds and crossbreds.
abstract: Studies on the activity of aldolase, aspartate aminotransferase and on the level of glucose in the blood serum of chickens from various breeds and crossbreds have shown that: 1. Breed and sex had a significant influence on the level of glucose and the activity of aldolase and aspartate aminotransferase. 2. The highest level of glucose was observed in both sexes of White Rock chickens; the lowest in Greenleg hens and Leghorn cocks. 3. The highest activity of aldolase was observed in White Rock cocks and Plymouth Rock hens; the lowest in Greenleg hens and Leghorn cocks. 4. The highest activity of aspartate aminotransferase was observed in White Rock chickens; the lowest in Leghorns. 5. As regards the traits investigated, crossbreds, in comparison to the parental breeds, were characterised in a majority of cases by values intermediate or only slightly different. Cases of homosis and heterosis in the level of the physiological indicators examined were also observed.
authors.affiliation: Department of Physiological Traits Inheritance, Institute of Genetics and Animal Breeding, Jastrzębiec, Poland.
authors.forename: H
authors.initials: H
authors.lastname: Majewska
authors.forename: A
authors.initials: A
authors.lastname: Kołątaj