Studies on factors affecting vitamina in Egyptian sheep

In this stUdy, 300 aniuals of Rah’:lany and Ossini breeds of both sexes ware xonihed ”” dcteruine the level of vitaminAand beth esxes were examined to determine the level of vitanin A lovol of Egyptia.n sheep thr 8ughout the yearis 83.01 I.U./IOO L.ll~ with a ran,.:;e of 45-144 I.U! The avero..::;evite.oin .A level durin~ the Barseen seasoh (Novenber •.. May) waslCYJ. I.U. vlhile its level Clurin::.; the n::m-BQrseen season (June-October) was 63~7 I.U./lOO n.l , Breed difference was alsof JL1l1C; the Vi tatJ.in .A level o f the ass io.1 breed was hiJher(91.4 I~U.) than that ’)f’the RahDani breocl (82.9 I.U./IOOcl seruG). klsJ vitaDin A level in Dales Df b8th breeds\722 f cunc to be hi;hor than fGLJ.ales (91.3 I.U. and 83.07 I.U.ulation in Fri,~sia(l bulls, whe r e as in buffaloes s e co.id t:jc:.culE,te contained higher concentration ofthat eriz yrne than first or third ones. Hmvever inthe t,;!O s p ecies, the alkaline phosphatase concent-rat ion [urri ts/lOO rn L] as well as both acid andalkaline phosoh at.as e content per ejaculate showed a ccns Ls t.e.rt de eline from the first toward thethird ejaculate. 3- The inorgo. (lie phosphorous concentration (mg%)assayed in groups of three successiv~ collections \1aS much higher in the third ejaculates of Friesian but in the second ejaculates of buffalobulls. The inorganic phosphorous in mg per ejaculate decreased appreciably with the sequence