THE EFFECTS OF DIFFERENT MOLTING PROGRAMS ON PERFORMANCE OF W-36 HY-LINE LAYING HENS

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HAJ KHODADADI I.; MORAVVEJ H.; SHIVAZAD H.; REYAHI M.

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Journal: Iranian Journal of Animal Science Year:2009 | Volume:40 | Issue:2 Page(s): 49-57

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Title

THE EFFECTS OF DIFFERENT MOLTING PROGRAMS ON PERFORMANCE OF W-36 HY-LINE LAYING HENS

Author(s)

HAJ KHODADADI I. | MORAVVEJ H. | SHIVAZAD H. | REYAHI M. | Issue Writer Certificate

Keywords

LAYING HENQ3

MOLTING PROGRAMQ3

FULL FEEDQ3

NORTH CAROLINAQ2

CALIFORNIA METHODQ2

WELFAREQ3

Abstract

This experiment was conducted to determine the effects of different MOLTING PROGRAMs on performance of W-36 Hy-line LAYING HENs. The experiment was based on a completely randomized design. The experimental treatments were: restricted feeding method (on-off), CALIFORNIA METHOD with 4-d feed removal period (CAL-4), CALIFORNIA METHOD with 10-d feed removal period (CAL-10), NORTH CAROLINA method with 14-d feed removal period (NC-1), NORTH CAROLINA method with modified diet in resting period (NC-2), full fed (FF) method based on high com molt diet, Recommended Method by breeding management guide (RM). Early egg production was significantly different among such long term feed removal methods as (CAL-10), (NC-1), (NC-2) and other treats (P<0.05). Different molting procedures had no effect on feed conversion ratio (FCR) in the production period. Body weight reduction was significantly different between (FF), (CAL-4) treats and such long-term methods as (NC-1), (NC-2) (P<0.05). Shell thickness, egg persistency, haugh unit, and relative egg shell weight were determined in pre-experiment as well as in 5 and 10 weeks past the second production and there was no difference observed among these parameters although increased with molt in all groups. The results indicated that induced molting is an effective way to recovery in both quality and rate of egg production and it was concluded that the Full Fed (FF) program in addition to being suitable and simple was the optimum method for recovery of production, along with the needed animal WELFARE.

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APA: Copy

HAJ KHODADADI, I., MORAVVEJ, H., SHIVAZAD, H., & REYAHI, M.. (2009). THE EFFECTS OF DIFFERENT MOLTING PROGRAMS ON PERFORMANCE OF W-36 HY-LINE LAYING HENS. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 40(2), 49-57. SID. https://sid.ir/paper/193629/en

Vancouver: Copy

HAJ KHODADADI I., MORAVVEJ H., SHIVAZAD H., REYAHI M.. THE EFFECTS OF DIFFERENT MOLTING PROGRAMS ON PERFORMANCE OF W-36 HY-LINE LAYING HENS. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2009;40(2):49-57. Available from: https://sid.ir/paper/193629/en

IEEE: Copy

I. HAJ KHODADADI, H. MORAVVEJ, H. SHIVAZAD, and M. REYAHI, “THE EFFECTS OF DIFFERENT MOLTING PROGRAMS ON PERFORMANCE OF W-36 HY-LINE LAYING HENS,” IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 40, no. 2, pp. 49–57, 2009, [Online]. Available: https://sid.ir/paper/193629/en

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