I suggest also to focus a light on using some feed additives in term of ( dried yeast (SC 10 g/head) to improve Rumen media and fermentation. Moreover, Using Aspergillus Oraysia fung (3 g /head )as anti heat stress and improving the feed intake. You could also use ascorbic acid as a co enzyme for improving aniaml digestibility and immunity ( Prof. M.A.A.EL-Barody, Head of Animal Production Department, Fac. of Agric., Minia Univ. El-Minia /Egypt.