• Title/Summary/Keyword: 부화장

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The Effects of Hatching Time on Body Weights and Body Measurements in Female Lines of Meat Type Breeders (육용종계 모계통에 있어서 부화시간에 따른 체중과 체척치에 관한 연구)

  • 정일정;정선부;박영일
    • Korean Journal of Poultry Science
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    • v.13 no.2
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    • pp.187-195
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    • 1986

  • This study was conducted to investigate the effects of hatching time on body weights and body measurements in White Plymouth Rock selected for female lines of broiler parents stock, Thirty cockerels were mated to 300 hens and the hatching eggs produced by each hen were pedigreed for sire and dam. The total of 975 chickens were classified into 14 groups by hatching time and their body weights and body measurements were recorded every 2 weeks. The results obtained were as follows: 1. The body weight at 4,6 and 8 weeks of age, and the length of keel and shank were decreased as hatching times were delayed. Correlation coefficient between hatching tine and body weights or body measurements was negative. 2. Chickens from strain D were hatched 7.4 hours later in male and 7.2 hours in female than chickens from strain C and the growth rate of strain C was superior to that of. strain D.

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