The effect of different methods of force molting on performance and egg quality of laying hens

Moradpour, Zeinab; Salari, Somayeh; Ghorbani, Mohammad Reza; Sari, Mohsen

doi:10.22059/jap.2016.54940

Document Type : Research Paper

Authors

¹ .Sc. Graduate Student, Department of Animal Science, Faculty of Food Science and Animal Science, Ramin Agriculture and Natural Resources University

² Assistant Professor, Department of Animal Science, Faculty of Food Science and Animal Science, Ramin Agricultural and Natural Resources University

³ Associate Professor, Department of Animal Science, Faculty of Food Science and Animal Science, Ramin Agriculture and Natural Resources University

https://doi.org/10.22059/jap.2016.54940

Abstract

This experiment conducted to evaluate the effect of different methods of force molting on performance, egg quality of laying hens with one hundred eighty of 52-wk old Hy-line layer in completely randomized design with six treatments, five replicates for 90 days. Treatments include 1 - feed withdrawal (FW), 2 - 50 percent alfalfa meal: 50 percent layer ration, 3 - 75 percent alfalfa meal: 25 percent layer ration, 4 - 100 percent alfalfa meal, 5 - whole barley grain (WBG) and 6 - high level of zinc oxide (20000 ppm) that were used for 10 days. The highest percentage of weight loss was observed in FW and zinc oxide groups (P<0.05). Egg production of birds that fed 50 percent alfalfa meal: 50 percent layer ration stopped later and reached to 50 percent egg production sooner than the other treatments (P<0/05). The WBG and 100 percent alfalfa meal had better egg production feed conversion ratio in compare to FW birds (P<0.05). The mean egg weight observed higher in FW group and egg yolk color was higher in FW and WBG groups in compare to the other treatments (P<0.05). The WBG and zinc oxide groups had highest eggshell percentage (P<0.05). According to the results of this experiment it seems that WBG and 100 percent alfalfa meal groups are the useful methods for force molting because of improving performance parameters of layers.

Keywords

20.1001.1.20096776.1395.18.2.6.7

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Animal Production

The effect of different methods of force molting on performance and egg quality of laying hens

References

References

Volume 18, Issue 2
June 2016
Pages 261-272

The effect of different methods of force molting on performance and egg quality of laying hens

References

References

Volume 18, Issue 2June 2016Pages 261-272

Volume 18, Issue 2
June 2016
Pages 261-272