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 January 2, 2019
Introduction The ban on use of antibiotics as growth promoters in EU since 2006 endorsed the finding of alternative to antibiotics in farm animal nutrition (Attia et al., 2006; 2012; El-Deek et al., 2011). Thus, search for effective alternatives to antibiotics in intensive animal production is a very important topic, considering not only the impact in animal welfare but also in human health. Anti ...
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Article published the November 6, 2018
Introduction The efficient use of feed is extremely important in broiler production. Investigations have to be continued to decrease cost of broiler production and improve broiler performance. Pellet feed has been shown to have the greatest potential to improve feed conversion ratio (FCR) and reduce cost compared to mash feed (Maiorka et al. 2005, Salari et al. 2006, Amerah et al. 2008). These im ...
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Youssef Attia likes the comment:
Interesting article. No doubt enzymes are an important tool in intestinal health. But there is still a long way ahead until we fully understand the complex interactions of all variables, like ingredient composition and its variation, usage of other additives, like organic acids, butyrate, etc, predominant microflora, and others. And this is even worse in swine, where intestinal fermentation can ac ...
Youssef Attia likes the comment:
My approach is to concentrate on the digestion system of our pigs. If the right microbial environment is established then the feed content can be based on nutritional need. The same philosophy as applies to soil preparation rather than crop fertilization. We use probiotics in the drinking water for our pigs and achieve better feed conversion, healthier pigs and reduce smell and insect issues.
Youssef Attia likes the comment:
Hello there, long time no see. Good and interesting work Mike, but let me make a comment here. This balance fermentable CH/Protein you talk about, how would it be possible to let´s say, monitor in some way. I would argue how different that could be depending on which grain is the main one used in your diets - barley, wheat, corn -, and how much it can vary if the enzyme used is a simple acti ...
Youssef Attia likes the comment:
Hi RafaelGreat to hear from you and yes it is a long time!. You make an interesting point. Quantitatively the most untapped but potentially fermentable fibre source in the maturing bird (>14d of age) is xylan and to a lesser extent glucan. I used to think that the enzymes we were feeding quantitatively produced the prebiotics which were fermented in the caeca to offset the protein as discussed. ...
Youssef Attia likes the comment:
Hi again Mike, and thanks for your comments. So let me see if I got it well: NSPases included will "encourage", by means of releasing shorter molecules- AXOS?- from that specific undigested fibre in diet, to try and digest more efficiently the rest of it? Apologies by coming back to you again......And many thanks again.
Youssef Attia likes the comment:
Hi RafaelYes, exactly. I suspect we are simply releasing oligosaccharides in such quantities that they cannot be quantitatively fermented to produce the increments in VFAs we see in the caeca, rather they act as a signal to the caecal microbiome to start producing their own xylanases/cellulases to digest the xylan fibre more effectively. Have a look at our abstract in this year's PSA meeting (Bedf ...
Youssef Attia likes the comment:
Hi I do hope you may be interested in fermented cereal grains fed to poultry. These processed feed materials were shown to have improved nutritive value than unprocessed counterparts. You can check some papers on my page in researchgate. We have observed significant changes in NSPase enzymes, this it is possible these feeds are good sources of activated plant enzymes and of prebiotics which were n ...
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We have a broiler farm using tunnel ventilation and evaporative cooling system. We operate fans and air speed according to the age and inner climate conditions. We belive that the enthalpy in the house which counts at the end of the day. The birds do not suffer from heat stress if all climate parameters under control.
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Location:Jeddah, Makkah, Saudi Arabia
Profile: Academic / scientific
Professional Title: Professor
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