Thermal regulation in birds by: is done

1 - Ordinary mechanisms: active in normal conditions and includes the way of radiation, Radiation and Convection and conduction Connection in addition to the evaporation of evaporation and evaporation and laying eggs.

2 - Extra - ordinary mechanisms: It activates when the temperature of the environment + humidity and the rate of thermal disposal is less than the rate of thermal output of the body and the body temperature rises and includes Panting.

Pathogenesis Pathogenesis: In normal conditions of temperature and humidity, the birds get rid of excess heat by means of the classical elimination mechanisms Conduction, Conduction and Irradiation, but at the remarkable rise of temperature and humidity, the birds begin to resort to the exceptional mechanisms of panting → Leading to large amounts of CO 2 → imbalance in the acid-base balance of the bird body Acid-base balance → imbalance in the ion equation with

- Extend blood vessels that feed the brain and sometimes many bursting causing brain bleeding.

- severe congestion of the liver and often explodes capsule Gleason covered him causing bleeding and shows the liver coated with a layer of blood clotted.

- Severe congestion in the spleen and lungs with severe dryness in the trachea.

How to deal with the problem of global warming: Below we review the various procedures followed:

First: birds: work to avoid the bird as much as possible of mycoplasma with the quality of incubation in order to be free of respiratory problems and thus be more able and efficient to cope with the problem of birds infected with respiratory diseases, where the efficiency of his respiratory system to cool his body and get rid of excess heat.

II. Buildings:

- The site: work to make the direction of farms from east to west to avoid exposing long ribs to direct sunlight for long periods, reducing the amount of thermal radiation on the farm and it is advisable to grow green trees fast-growing and abundant shade around the houses of education to reduce the reflection of the sun and because of its role as an air conditioner Inside the farm.

Dear Chaimae Tahiri

to apply heat stress condition to animals it is not ethical, unless your research problem justifies that very well; there are a lot of information on that subject, you can used to interpreted your results. Any way you can measure in situ environmental indicator and correlated it with animal behaviour and performance in determinate moments.

Best regards,

Redimio

Please, read in the following links:

https://academic.oup.com/ps/article/97/11/4073/5040621

and:

Article The Effect of Cyclic Heat Stress Applied to Different Broile...

and the file attached .

Regards

Would you please let me know what is the ambient temperture during the two months so icould help

It's better to make use of a climate control chamber for your experiment. You will be able to control both temperature and humidity by doing so!

I think you must determine the H/L ratio so the effect of heat can be measured also total WBC count , RBC count and antibodies titers can be definit so you can fixed the effect of heat stress on chicken broiler

Can be done in environmentally controlled houses with thermostatic control. Nutritionally can be managed by formulation of high energy/high protein rations. Ventilation regulation at different times of the day will also help. These treatments with different combinations at different times of the day will help.

lnathubbi

Thank you all for your contributions

Heat is a large stress factor on broilers. This results in the animals beginning to "pant" ,similarly to dogs, as their body temperatures exceeds normal limits. Furthermore, this can result in heat exhaustion/sickness and even death in the animal. Although purposefully applying heat for the intention of causing them to obtain these reactions is not ethical, it does occur naturally during warmer months or if heat lamps are not properly adjusted to their thermal comfort zone at various stages in their lives.

Definitely if Ambient temperature is too high, birds will come in stress very easily which can be identified further by observing signs in behavioral changes. Water consumption,feed consumption can help you in finding whether they are actually in stress or not?

Did you mean "how to induce heat stress onto broiler chickens under experimental condition"?

pleasse measure the temperature humidity index (THI) before the experiment for further detail please read the following research

Betaine Supplementation Improves the Production Performance, Rumen Fermentation, and Antioxidant Profile of Dairy Cows in Heat Stress

This depends on the amount of temperature of the ocean, humidity, and the type of chicken breeding halls

just give them the brooder heater hehe