Effect of using some anti-heat stress compounds on the performance of some local breeds of chicken under hot climatic condition.
Abstract: The experiment was carried out at Sids Poultry Research Station, Animal Production and Research Institute, Agriculture Research Center, to study the effect of some anti-heat stress compounds on productive and reproductive performance of Bandara and Dandarawi chickens during summer season (June, July and August) where environmental temperature ranged from 22- 38°C and humidity from 35-60%. A total number of 90 females and 9 males at 30 weeks age from each breed were divided to three treatments with three replicates for each treatment. Basal commercial layer diet was fed to the hens without supplements (control group), the second treatment fed basal diet supplemented with 20 ppm Acetyl Salicylic Acid (ASA) as Rivo and the third treatment was fed basal diet supplemented with 20 ppm Metamezol Sodium (MS) as Novalgin. The results obtained from the study can be/summarized as follows:
J - Adding MS or ASA to diets improved egg number and the improving was more with MS than ASA.
2- Egg mass was significantly higher when adding MS or ASA for both Bn or Dn than untreated group.
3- Feed intake was increased in Bandara treated groups compared by free diet group. While it was decreased in Dandarawi hens supplemented with ASA.
4- Adding ASA or MS to diets improved fertility and hatchability percentages compared by free diet group.
5- The treatments had no significant effect on mean of percentages of hatched chick weight to egg weight.
6- Body weight gain was higher in ASA group compared to MS and control groups.
7- Bn hens had significantly lower blood ph with ASA group. While, there were no significantly differences in blood ph for other groups.
8- Rectal temperature was significantly lower in treated group than free diet groups. But MS group was more efficiency in decreasing rectal temperature of Bandara hens than other groups.
9- Respiration rate was significantly lower of Dandarawi treated groups, but the decreasing is not significant in Bandara treated groups compared with free diet groups.
10- Semen volume per ejaculate was more in Dandarawi than Bandarah. Moreover supplementing MS or ASA increased it compared by free diet group for each Bn or Dn breeds.

11 - Dandarawi males was had higher semen quality than Bandarah.
Supplementing ASA or MS to Bandara diets or Rivo to Dandarawi improved motility of semen compared to untre.ated diets.
12- Adding both ASA or MS to diets were decreased the cost of feed used to egg production for both Bn or Dn ,on the other hand, using ASA in Bn diets increased the feed consumption and feed cost for egg production.
It can be concluded from this study that supplementing both ASA or MS to layer diets at 20 ppm as an anti-heat stress improved both production and reproduction performance of Dn and Bn hens . Moreover, further study should be made to confirm if the prolonged use of these compounds caused side effects or not.
Publication year 2004
Pages 417-427
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
Country Egypt
City الاسكندرية
serial title Egyptian Poultry Science
Volume 24 . 11
Department Poultry Breeding Research Department
Author(s) from ARC
Agris Categories Animal physiology - NutritionAnimal physiology - Reproduction
AGROVOC
TERMS		 Feeding systems. Heat stress. Humidity. Layer chickens. Performance testing. Summer.
Publication Type Journal
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