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KMID : 1025520080500060799
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Journal of Animal Science and Technology
2008 Volume.50 No. 6 p.799 ~ p.806
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Effects of Feeding High and Low Ca Additive on Laying Performance and Egg Quality in Laying Hens
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Kang Hwan-Ku
Kang Geun-Ho
Kim Dong-Wook
Na Jae-Cheon
Yu Dong-Jo
Lee Sang-Jin
Kim Sang-Ho
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Abstract
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This experiment was carried out to investigate the effect of feeding limestone to high and low Ca layer diets on laying performance and eggshell quality in laying hens. Five hundred and twenty-eight HyLine brown layer allotted to six treatments consisting of high and low Ca diets. Limestone added to two kinds of basal diet with 1, 2 and 3 fold compared to conventional diet. Egg production was not different regardless Ca level and amount of added limestone in overall periods. However, the increment of egg observed in high Ca diet and added 10g limestone group during later period. Ca and limestone intake were increased as increasing feeding limestone. Eggshell strength and thickness were improved in high Ca consumption group. It was concluded that feeding Ca sources to conventional diets was helpful improving eggshell quality and reducing feed cost per egg mass by increasing proportion of Ca intake.
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KEYWORD
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Ca, Laying hens, Egg quality, Egg production
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