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http://dx.doi.org/10.5536/KJPS.2007.34.4.279

Effects of Feeding Non-Salt Diet on the Induced Molting in Laying Hens  

Hong, E.C. (National Institute of Animal Science)
Na, J.C. (National Institute of Animal Science)
You, D.C. (National Institute of Animal Science)
Kim, H.K. (National Institute of Animal Science)
Chung, W.T. (National Institute of Animal Science)
Lee, H.J. (National Institute of Animal Science)
Kim, I.H. (Department of Animal Resources & Science, Dankook University)
HwangBo, J. (National Institute of Animal Science)
Publication Information
Korean Journal of Poultry Science / v.34, no.4, 2007 , pp. 279-286 More about this Journal
Abstract
This study was conducted to induce molting with DDGS and non-salt diet and compare the effect of feeding molting and fasting molting on the performance, egg quality, and visceral organs in laying hens for animal welfare. One-hundredeight 62-wk-old White Leghorn hens that egg production was over 80% and average weight was $1.8{\pm}0.1kg$ were used in this study. Treatments were control(non-molt treatment), feeding molt treatment(DDGS, non-salt diet), and fasting molt treatment. The four treatments were administered to three replicate group of nine hens wherein each group. All treatment groups were fed the basal diet(CP 15%, ME 2,700 kal/kg) for two weeks as the adaptation period. Test Periods were 28 days at all treatments. Egg production decreased for 18 days to be 0% at feeding molting treatment, and for 17 days to be 0% at non-salt feeding molting treatment. Egg production stopped for 6 days at fasting molting treatment. Egg production restarted after 12 days molt at feeding molting treatment, while after 16 days at fasting molting treatment. On the egg quality was improved at molting treatments (p<0.05) except egg yolk. Egg shell tissue was crowded at molting treatment to compare to control. Liver weights, heart weight, and oviduct weight of laying hens decreased at molting treatments(p<0.05). Finally, feeding molting might could be replaced fasting molting on the welfare and further studies were needed about molting program.
Keywords
feeding molt; fasting molt; egg quality; performance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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