Youssef Attia
Professor
Broiler nutrition, laying nutrition, broiler breeders nutrition (female and male), duck nutrition, quail nutrition, diet balance and formulation,
Professor
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Article published the July 20, 2020
Introduction Globally, feeding cost and the price of poultry product have recently increased due to increasing competition between human and animals for the same feed resources. Agriculture by-products are valuable feedstuffs that can be used in animal nutrition (Al-Harthi et al. 2018a, 2018b). In animal nutrition feed processing and feed additives as well have been used for improving the feedin ...
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Participation in Forum on June 25, 2020
Alvaro Dubois unless they working by different mode of action such as one decease endogenous amino acids loss or increasing digestablity if protein
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Participation in Forum on June 25, 2020
Mercedes Vazquez-Anon very helpful, in addition the effect of protease will depend on age of broilers and diet quality
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Youssef Attia likes the comment:
Luciano Andriguetto Hi Luciano, The effect of the protease is to improve amino acid digestibility of ingredients, in the presence or absence of trypsin inhibitor. The presence of trysin inhibitor in soybean meal reduces the capacity of the animal to digest protein, and this reduction is partially ameliorated by the protease. Hope this helps!
Participation in Forum on December 26, 2019
Water supplements are more effective than in feed supplies due to many well known factors affecting feed intake praticulary during heat stress. The response to organic ligands depends on mineral status of the feeds as said.
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Participation in Forum on October 25, 2019
Sure the effect of protease will be indeed affected by other enzymes in the enzymes cocktail and type of diet composition due to the space available for protease to work on even with a different mode of action of different enzymes which may affect protein digestibility indirectly.
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Participation in Forum on October 8, 2019
Protease and phytases had different mode of action on protein digestibility and thus a combination of them most likely to have a great effect during first 4 weeks of life and on low nutritive value feedstuffs. Perhaps more research can improve our background in this area.
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Participation in Forum on May 26, 2019
Please see works by Attia et al. and heat stress and Habashy et al and heat stress in details the effectiveness of any antiheat stress agents depends severity of heat stress such as duration, temperature and attitude as well as age of birds and genetic makeup.
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Youssef Attia likes the comment:
Youssef Attia doesn’t help if it doesn’t work. DL-methionine allowed in organic production in USA.
Youssef Attia likes the comment:
We have published research on herbal met the correct way with dose-response and found no met activity.
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Location:Jeddah, Makkah, Saudi Arabia
Profile: Academic / scientific
Professional Title: Professor
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