Korean Journal of Animal Reproduction (한국가축번식학회지)
- Volume 9 Issue 2
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- Pages.124-132
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- 1985
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- 1226-5284(pISSN)
Development of the Seminiferous Tubules of Meat Type Cockerels in Relation to Sexual Maturity
육계의 성성숙에 따른 세정관발육에 관한 연구
Abstract
The work was conducted to clarify the development of testes and histological changes of the Seminiferous tubules that is the Surface area, diameter, length of the tubules and the process of Spermatic cells growth in Seminal epithelium in relation to Sexual maturity of the meat-type cockerels. In addition the present experiments were planned to gain some basic data helpful for the study of reproductive physiology in meat-type cockerels and also to compare the histological changes Seminiferous tubules between egg and general purpose type cockerels. 1. The growth pattern of body weight, testes and comb was classified into four phase according to age. Body weight increased up to about 2kg at 2nd stage and to 4.3kg at 4th stage while at 3rd stage the growth rate of body weight was slower. The tests developed slowly until 22 weeks of age with no correlation to the growth of body weight. However, it grew rapidly afterwards, reaching 27.79
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