تأثير إضافة مستويات مختلفة من مسحوق السيسبان و إحلاله محل مكون الرزة الشامية و تأثير ذلك على صفات النمو و خصائص الربيحة في حملان الأغنام الجنديه

الملخص EN

The gradual high cost of the maize as well as the rest of other plants that inter in the formulation of ration of the animals and most of them comes from outside and this leading to problems the owners of breeding of sheep due to rising in the cost of production.

So that the replacement of maize by different ratio of prosopis juliflora to the concentrated ration is agood due to low cost of ration and leading to two main objects ,first, low cast of ration and replacement the high cost of maize leading to decreasing in the cost of production .

The second returned to awide spreading of this tree in the desert and causing a dangerous effect on the cultifiated land so, the use of such tree leading to decreasing in spreading of it tree.

This study is carried out in the animal farm of fact.of agriculture and vet.med of Ibb univ.

The study carried out on twelve head of male lambs for Gandian sheep after weaning.

The lambs classified randomely into three groups, the first is a control, while the 2nd and 3rd group used in the experiment .

After two weeks from adaptation a concentrated ration should be given to lambs which contain 12.5% and 25% Instead of the maize.

The feeding of lambs continues for 90 days.

The obtained results indicated that there is no significant changes due to using of prosopis juliflora insteed of maize particularly on the character of growth and carcass quality .But,the study is considered the the first study on the Gandian sheep and this help in the study of ac haracter of Gandian sheep production and this help in the improvement of this type of sheep.