Research Article
Volume 6 Issue 1 - 2021
Effect of Mitigation of Heat Stress by Early Heat Acclimation and Glutamine Injection on Some Physiological, Productive and Reproductive Traits of Sinia Chickens
YS Rizk1, Ehab A Abdallah1, Doaa MM Yassein1, Fatma TF Abd-ElGhany2, Hassan abde-lkarim1, Nahla A AL-Razik1, MH Abdelfattah1, HA Abdellatif1 and Osama A El-Sayed1*
1Poultry Breeding Research, Department Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt
2Agricultural. By-product Utilization Research, Department Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt
*Corresponding Author: Yaser Saddek Rizk, Poultry Breeding Research Department, Animal Production Research Stations, Agriculture Research Centre, Minimum of Agriculture., Giza Egypt.
Received: November 17, 2020; Published: December 30, 2020


This work aimed to investigate the resistance of female Sinia chickens against hot climate by using both early heat shock exposures (HSE) and glutamine injections (GI). four hundred and fifty one-day old of female Sinia chicks were randomly divided into five groups with three equal replicates to enhance the effect of (GI) and (HSE) on some productive and physiological performance in laying hens during reproductive period under heat stress conditions. The 1st group of chicks was reared under natural conditions and served as a control. The 2nd group of chicks was managed thermally like the control group during growth period, while through reproductive period the female were exposed to heat challenge (38 ±1ºC for four hours from 12 pm till 4pm for one day) at 24, 30 and 34 weeks of age. The 3rd group (HSE1) was injected with glutamine GI (0.75 mg/kg weight intra peritoneal injection (at age of two days) then, exposed to early heat shock (41 ±1ºC for four hours from 12pm till 4pm for 3 consecutive days) at age of 3 days, the 4th group (HSE2) was twice injected with GI at 0.75 mg/kg weight (intra peritoneal injection) at 2 and 34 days of age, then exposed to heat shock (41 ±1ºC for four hours from 12pm till 4pm for 3 consecutive days) at age of 3 days and 35 days. The 5th group (HSE3) was injected three times with GI at 0.75 mg/kg weight (intra peritoneal injection) at 2,3 and 111 days of age, and then, exposed to three times of heat shock (41 ±1ºC for four hours from 12 pm till 4 pm for 3 consecutive days) at ages of 3, 35 and 112 days. During reproductive period, HSE1, HSE2, and HSE3 groups were reared under natural conditions and they were exposed to heat challenge at 24, 30 and 34 weeks of age (similar to that applied for the second group). Results revealed that there was a significant decrease in the values of respiratory rate and rectal temperature for the groups treated with injection and temperature, as well as the T5 (HSE3) group females had a significant increase in both heat shock protein 70, final body weight, total protein, albumin, globulin and hormonal level Progesterone and estrogen, and final body weight. The 5 (HSE3) group showed that females showed a significant increase in egg number.

Keywords: Early Heat Shock Exposures; Glutamine; Female And Heat Shock Protein70


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Citation: Yaser Saddek Rizk., et al. “Effect of Mitigation of Heat Stress by Early Heat Acclimation and Glutamine Injection on Some Physiological, Productive and Reproductive Traits of Sinia Chickens”. EC Veterinary Science 6.1 (2021): 24-34.

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