지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
With an increasing concern on laying hen welfare, barn system has appeared as one of the alternatives to replace the conventional cage. This study was conducted to compare the early laying performance and egg quality at the barn system with those at the conventional cage. A total of 288 shaver-579 brown layers were used for 9 weeks (21<SUP>st</SUP> to 30<SUP>t</SUP>h weeks of age) feeding study. Feed consumption and egg weight were significantly (P<0.01) higher at barn than at cage. However, there were no significant differences between two housing systems on hen day egg production (HDEP), egg mass, body weight, feed efficiency and livability. In case of egg quality parameters, shell thickness, albumen height and Haugh unit were significantly (P<0.05) different between two systems. Haugh unit and albumen height were significantly higher in eggs produced at cage (88.97 and 8.16 mm) compared than those produced at barn (83.11 and 6.87 mm), whereas shell thickness was thicker in eggs produced at barn than those produced at cage. Shape index, breaking strength, blood spots and yolk index data were not influenced significantly by the types of housing system. To implement welfare bestowing production, this study showed that the barn system can replace the conventional cage without serious sacrifices on starting phase egg production. In addition, this study suggested that the barn system need to be optimized in view of daily feed consumption.
목차
ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
CONCLUSION
REFERENCES
참고문헌 (31)
참고문헌 신청
Abrahamsson P / 1996 / Effect on production, health and egg quality of varying proportions of wheat and barley in diets for two hybrids of laying hens kept in different housing systems / Acta Agric Scand 46:254~260
Al-Awadi AA / 1995 / Productive performance of laying hens housed in minimal shade floor pens and laying cages under ambient condition in hot arid regions / Livest Prod Sci 41:263~269
Álvarez R / 2012 / Changes in ovarian function and egg production in commercial broiler breeders through 40 weeks of lay / Br Poult Sci 53:386~393
Anderson KE / 1994 / Effect of cage versus floor rearing environments and cage floor mesh size on bone strength, fearfulness and production of Single Comb White Leghorn hens / Poultry Sci 73:1233~1240
Arad Z / 1982 / Differences in egg shell quality among the Sinai Bedouin fowl, the commercial White Leghorn and their crossbred / Br Poult Sci 23:107~112
Al-Awadi AA / 1995 / Productive performance of laying hens housed in minimal shade floor pens and laying cages under ambient condition in hot arid regions / Livest Prod Sci 41:263~269
Álvarez R / 2012 / Changes in ovarian function and egg production in commercial broiler breeders through 40 weeks of lay / Br Poult Sci 53:386~393
Anderson KE / 1994 / Effect of cage versus floor rearing environments and cage floor mesh size on bone strength, fearfulness and production of Single Comb White Leghorn hens / Poultry Sci 73:1233~1240
Arad Z / 1982 / Differences in egg shell quality among the Sinai Bedouin fowl, the commercial White Leghorn and their crossbred / Br Poult Sci 23:107~112
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UCI(KEPA) : I410-ECN-0101-2014-520-003115675