Utilize of guar meal instead common oil seeds meal in nutrition of Mazandaran male Zel fattening lambs

The experiment was carried out in two steps for evaluate the feeding potential of guar meal on fattened Zel lambs and its comparison with other common oily meals (soybean، sunflower، cottonseed and canola). At the first step، the chemical composition of meals was evaluated. The results showed that there are significant differences between meals composition except dry matter; besides، guar meal had highest amount of protein by 51. 02%. In the second step feedlot performance of Zel lambs in a 90-days feedlot period was measured. There was no significance difference in terms of daily weight gain; however، it was numerically highest in guar meal consumed lambs (P<0. 05). Any significant difference was observed between feed consumption of guar and soybean (P<0. 05). there was no difference in Dry matter intake of lambs guar meal and soybean، In this study، food conversion ratio for lamb that consumer guar meal was better than any other group. Regarding to considerable similarity between guar and soybean meals- as a customary protein complementary of Iran- and results of this study، guar meal can be a suitable alternative for protein part of fattened lambs ration.