The effect of dietary Glutamine supplementation on performance and blood parameter, carcass characteristics, quality and characteristics meat of broiler chickens under continuous heat stress condition
Good work, with seemingly coherent results. There is a single issue where I would like to make a consideration, regarding the fact that the performance of the birds in the phase from 0 to 21 days, contrary to what happened in the 22 to 42 days, was not influenced by the levels of glutamine. I believe that this variation of results would be related to the fact that the temperature of 32 º represents a lower intensity of stress when applied in the phase of 0 to 21 days, compared to the phase of 22 to 42 days.
Mustafa Ayazi, while understanding his point of view, continues with the view that the difference in bird performance between phases would be related to the fact that the temperature of 32 C represents a lower stress intensity for birds from 0 to 21 days, compared to 22 to 42 days of age. However, I think it is important to emphasize that in biology there is no absolute truth.
Based on the author's conclusion, it was concluded that although dietary Glutamine consumption can improve the performance of broiler chickens during the grower and whole period under heat stress, but it doesn’t affect the performance during starter period or blood parameter at week 6 of age. Thus, the lack of significant effect during the starter period may be due to high temperature requirements for broilers (34-32) compared to the grower period (~28ºC) after 3 weeks of age. Thus, the critical or broken point for heat stress in broilers in greater than 29ºC after 3 weeks of age.
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Youssef Attia Hello doctor
The conditions of the laboratory for the simulation of tropical regions in the country, such as the southern regions of Iran, are Bushehria, Kerman. The temperature rises to 42 degrees in the summer. The aim of the study was to investigate the changes in glucose supplements and glucose levels in broiler chicks in these areas. It is true that the effects of blood factors have not been meaningful or somewhat meaningful for some, but the results indicate the effect on the function due to complementary effects in improving the status of antioxidants and the immune system's factors.
Most importantly, it may have been due to the proteins of the intestines from radionuclide destruction.
When we look at performance numbers, the results indicate that the Factor Factor or FC, although not meaningful, was effective in controlling the control without glutamine, indicating that the bird's physical condition and their consistent increase at the end of the course, and this factor has led to weight gain in the growth period.
I understand that the report of Prof. Youssef is consistent with my considerations.
Dear Mustafa, thanks a lot for your article. The antistress action of glutamine is caused by central position of these amino acids in transferring of amino groups. So, in this way glutamine is highly increasing their spectra of biochemical reactions, responsible for antistress action. You can support glutamine by betaine and carnitine. Probably these substances can give a synergic effect. Best wishes to you.
