Join Engormix and be part of the largest agribusiness social network in the world.
AbdelRahman Youssef, PhD
- Calculates the LEAST input (nutrient and feed ingredients cost) for MAXIMUM output (productive performance, livability, profitabilit .. etc.) - Providing nutritional support, feed formulation servic
AbdelRahman Youssef, PhD likes the comment:
Great topic! That will be a robust energy system to chase NE for maintenance and production. So far, there's been an ongoing debate among researchers on whether the poultry industry would benefit from a NE system over the ME system due to the following challenges: 1. Inconsistent definition of NE 2. Challenges regarding measuring heat production (Sources of heat are confounded; Non-feed factors ca ...
Photo posted on August 31, 2023
Aquaculture darm
On the album: My activity
Photo posted on August 31, 2023
broiler heat stress
On the album: Clinical issues
AbdelRahman Youssef, PhD likes the video:
Mohammad Afrouziyeh (University of Alberta / Poultry Innovation Partnership) shares his recommendations and insights on water quality, as well as a new tool to control it, during this Engormix interview.
Photo posted on November 20, 2022
chicken trial house
On the album: Various
AbdelRahman Youssef, PhD likes the comment:
In my viewpoint, you need to consider matrix value of Ca as well; otherwise, and as mentioned by others, Ca level in your diets incased that has adverse effect on Phytase. Below I added some considerations regarding Phytase and its matrix value. I hope this would be applicable. Factors affecting phytase activity Mineral contentAlthough doubted in some literature, high level of dietary calcium has ...
AbdelRahman Youssef, PhD likes the comment:
Hello from Colmenar Viejo, Spain. Enzymes need a certain level of substrate in the feed so that they work like a key-lock complex. If we take look to ruminants, these poligastric animals can digest plenty of various fibrous materials due to their capacity - due to the microflora in rumen- to produce fibrolytic enzymes. Monogastrics, on the other hand, don´t show this capacity - some fermenta ...
AbdelRahman Youssef, PhD likes the comment:
Excess of choline chloride in ration of commercial laying hens produce a refused taste of eggs, for that we can’t open the amount of choline according to fat content in liver.
AbdelRahman Youssef, PhD likes the comment:
This is an extremely interesting study for me. Without going into details, the results are quite expected. However, due to what part of the reduced use of DL-methionine logically, we should expect that due to D-methionine, which is foreign to the body. About 30 years ago, I found that DL-methionine in chickens was induced by cytochrome P-450 in the liver. Cytochrome is induced by a number of forei ...
AbdelRahman Youssef, PhD likes the comment:
Dear All,formulating in Bestmix, I also considered the total Ca and dig./av. P for the added phytase; and energy (ME) and AA for the NSP enzymes only. On this way I estimated to be on the safe side, because the nutrient matrix values indicate the amount of nutrient that could be released when the enzyme is added.In the past 10 years it became a trend to request and offer “matrix values&rdquo ...
equalizer Statistics: Forums(1)
Location:Cairo, Al Qahirah, Egypt
Profile: Academic / scientific
Professional Title: PhD
Followers (2)
Following (37)