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- Title
Effectiveness of various cooling systems during high environmental temperature on production and welfare indices of laying pullets in deep litter system of rearing.
- Authors
Ganie, Asif Ali; Kaur, Daljeet; Chopra, Sangeeta; Nagra, Sarabjeet Singh; Nayar, Shashi
- Abstract
The present study was conducted to determine the effect of different cooling systems; Fan Fogger (FF) and Fan Pad (FP) on micro environment of poultry house, thermal comfort, welfare, egg production and egg quality parameters of laying hens. This experiment was conducted on 210, White Leghorn laying pullets (32 weeks old) during hot-dry summer months (May - July) under deep litter system of housing. The FP and FF cooling systems significantly dropped the mean shed temperature and increased the relative humidity. Thus, better THI resulted in increase in egg production by 4.66% and 3.32% under FP and FF systems over the control group. However, specific gravity, H.U, egg shell thickness, yolk index and yolk color were not significantly influenced by cooling treatments. Significantly lower levels of antioxidant enzymes viz. LPO, Catalase, G6PD, GPx and SOD was registered in cooling groups. Both the cooling devices contributed towards bird welfare by altering the behavioral expression from agonistic to non-agonistic activities.
- Subjects
EGG quality; COOLING systems; ANIMAL litters; AGRICULTURAL egg production; HIGH temperatures; SPECIFIC gravity; THERMAL comfort
- Publication
Indian Journal of Animal Research, 2020, Vol 54, Issue 5, p635
- ISSN
0367-6722
- Publication type
Article
- DOI
10.18805/ijar.B-3826