Loving my girls
Crowing
Firstly I would like to say that as this document was downloadable I feel it is okay to quote extracts in this thread and attach the document.
When browsing heat stress on my girls I fell upon this document. It’s a little old, 2020, but I don’t think this detracts from the factors expressed.
What I found interesting-
In laying hens, feeding of wet feed during the high temperature increased dry matter intake, egg weight, and egg production. Although this approach was found to have beneficial effects in heat-stressed birds, it is less common among poultry farmers, as there is a risk of fungal growth in the feed causing mycotoxicosis in the birds.
Dietary supplementation of vitamin E in heat-stressed laying hens is found to improve egg production, egg weight, eggshell thickness, egg specific gravity, and Haugh unit. Bollengier-Lee concluded that dietary supplementation of 250 mg vitamin E/kg of feed is optimum for alleviating adverse effects of chronic heat stress in laying hens. The liver is an essential organ for egg formation as it helps in the synthesis and release of egg yolk protein-vitellogenin. Yardibi et al. stated that vitamin E helps to improve the egg production by preventing liver damage in the heat-stressed birds and thus, facilitate the synthesis and release of vitellogenin.
Although poultry can synthesize vitamin C, the amount is limited during heat stress conditions. Thus, dietary supplementation of vitamin C is an effective strategy to reduce the harmful effects of heat stress in poultry.
In laying hens, supplementation of 150 mg/kg of feed with curcumin improved the laying performance, egg quality, antioxidant enzyme activity, and immune function during heat stress.
Closed housed systems equipped with air conditioning, cooling pads, cool perches, and exhaust fans are found useful in attenuating the negative effects of heat stress in poultry. However, such houses are expensive to build and operate in developing nations and therefore dietary manipulations are more appropriate.
If you are a serious geek like me the whole pdf is attached. Happy reading
Hugz
When browsing heat stress on my girls I fell upon this document. It’s a little old, 2020, but I don’t think this detracts from the factors expressed.
What I found interesting-
In laying hens, feeding of wet feed during the high temperature increased dry matter intake, egg weight, and egg production. Although this approach was found to have beneficial effects in heat-stressed birds, it is less common among poultry farmers, as there is a risk of fungal growth in the feed causing mycotoxicosis in the birds.
Dietary supplementation of vitamin E in heat-stressed laying hens is found to improve egg production, egg weight, eggshell thickness, egg specific gravity, and Haugh unit. Bollengier-Lee concluded that dietary supplementation of 250 mg vitamin E/kg of feed is optimum for alleviating adverse effects of chronic heat stress in laying hens. The liver is an essential organ for egg formation as it helps in the synthesis and release of egg yolk protein-vitellogenin. Yardibi et al. stated that vitamin E helps to improve the egg production by preventing liver damage in the heat-stressed birds and thus, facilitate the synthesis and release of vitellogenin.
Although poultry can synthesize vitamin C, the amount is limited during heat stress conditions. Thus, dietary supplementation of vitamin C is an effective strategy to reduce the harmful effects of heat stress in poultry.
In laying hens, supplementation of 150 mg/kg of feed with curcumin improved the laying performance, egg quality, antioxidant enzyme activity, and immune function during heat stress.
Closed housed systems equipped with air conditioning, cooling pads, cool perches, and exhaust fans are found useful in attenuating the negative effects of heat stress in poultry. However, such houses are expensive to build and operate in developing nations and therefore dietary manipulations are more appropriate.
If you are a serious geek like me the whole pdf is attached. Happy reading
Hugz
