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The Science Bulletin of the Division of Agriculture, Home Economics and Engineering  >
No.11 (1964/12) >

 
Title :産卵成績からみた沖縄の養鶏
Title alternative :Egg production tests in Okinawa.
Authors :松田, 祐一
Authors alternative :Matsuda, Yuichi
Issue Date :Dec-1964
Abstract :As Okinawa is located in the subtropical zone where the air temperature and the humidity are usually high, we are apt to consider that Okinawa may not be the suitable place for raising chickens. The author studied on the growth of chicks, the egg production and feed consumption by raising 203 day old commercial chicks produced in Hy-line farm, U.S.A. The studies were conducted for 500 days from October 17th, 1962 to February 28th, 1964. The records were as follows. 1. Mortality to 150 days 3.0% 2. Mortality from 150 days to 500 days of age 1.5% 3. Days of age to 50% egg production 157 days 4. Hen day production from age of 50% production to 500 days of age 74.3% 5. Average number of eggs per pullet housed to 500 days of age 253.8 eggs 6. Weight per one egg 57.7g 7. Body weight at the age of 50% production 1730g 8. Body weight at the end of the test 1847g 9. Feed consumption per pullet to days of 50% production 10.6kg 10. Feed per one kilogram of eggs produced 2.5kg The above records show rather better results as compared with those obtained in the, United States of America, Canada, and Japan. It can be safe to say that Okinawa is good place for raising chickens, though the Islands are located in the subtropical area.
Type Local :紀要論文
ISSN :0485-7828
Publisher :琉球大学農家政工学部
URI :http://hdl.handle.net/20.500.12000/19211
Citation :琉球大学農家政工学部学術報告 = The science bulletin of the Division of Agriculture, Home Economics & Engineering, University of the Ryukyus no.11 p.52 -57
Appears in Collections:No.11 (1964/12)

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