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Dr.Tarek Mostafa Dept. of Nutrition Clinical Nutrition Faculty of Veterinary Medicine Cairo University

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Dr.Tarek Mostafa Dept. of Nutrition Clinical Nutrition Faculty of Veterinary Medicine Cairo University

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    1. Dr.Tarek Mostafa Dept. of Nutrition & Clinical Nutrition Faculty of Veterinary Medicine Cairo University

    11. Pellet Quality Testing There are generally two mechanisms available which mimic field conditions: 1. The tumbling can involves placing a weighed sample of material into a rotating chamber for a set period of time, ( 10 minutes at 50 r.p.m). 2. The Holmen tester the weighed sample of pellets are pneumatically conveyed around a closed pipe, ( 30 seconds) .

    26. Steam conditioning Wet steam transfers its heat less efficiently than saturated steam and can cause uneven moisture distribution in the mash, resulting in choking or slipping of the pellet die.

    27. Saturated steam has increases mash temperature by 16C for every 1% added moisture. while wet steam increases mash temperature by 13.5C for each 1% increase in moisture. Poor steam quality can reduce conditioning temperatures by 6C to 11C,depending on the amount of added moisture.

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