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KMID : 1025520000420060767
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Journal of Animal Science and Technology
2000 Volume.42 No. 6 p.767 ~ p.776
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Study on the Association of Early Egg Productivity with Serum Insulin - like Growth Factor - I in Korean Native Ogol Chicken
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Abstract
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There are considerable evidences that growth factors are involved in the regulation of ovulation rate and oviductal development in birds. This study was conducted to investigate the association of early egg productivity with serum insulin-like growth factor-I (IGF-I) in Korean Native Ogol Chicken (KNOC). Whole blood was collected from KNOC at the age of 20, 30, and 40 weeks. Serum IGF-I concentration was measured by radioimmunoassay. Chicks were divided into high and low groups, based on egg production and IGF-I concentration until 40 weeks of age. IGF-I was significantly higher at 30 and 40 weeks of age in high egg production group compared to that of low egg production one (P$lt;0.05). This result indicates that serum IGF-I and number of egg production have a positive association and implies the regulation of egg production by IGF-I in KNOC. Further studies will need to understand the endocrine mechanism of egg production to describe the endocrine regulators in KNOC.
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KEYWORD
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