- Volume 21 Issue 8
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Probiotics in Drinking Water Alleviate Stress of Induced Molting in Feed-deprived Laying Hens
- Khajali, Fariborz (Department of Animal Science, Shahrekord University) ;
- Karimi, S. (Laboratory for Animal Nutrition, University of Ghent) ;
- Qujeq, D. (Department of Biochemistry and Biophysics, Babol University for Medical Sciences)
- Received : 2007.12.29
- Accepted : 2008.03.04
- Published : 2008.08.01
An experiment was conducted to evaluate the physiological changes of laying hens subjected to feed removal during induced molting while received probiotics in the drinking water. Post-molt performance and egg quality criteria were also studied. Ninety 78-week-old Hy-line W36 laying hens were divided into two treatment groups according to equal body weight and subjected to induced molting by continuous feed removal until around 30% BW reduction. The experiment lasted 12 wks consisting of 4-wk molting and 8-wk post-molt periods. Treatment 1 received no probiotics and was considered as the control. Treatment 2 was similar to the control except that hens received probiotics in the drinking water at 400 mg/L during feed deprivation. The results indicated that hens in both groups went out of production by Day 5. However, hens received probiotics reached 5 and 50% egg production sooner than the control (30 and 52 days vs. 31 and 54 days). Starvation during molting increased heterophil to lymphocyte (H/L) ratio, hematocrit and plasma T4 and
Supported by : Shahekord University
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