Abstract: This study was conducted to evaluate the effect of insert artichoke (Cynara scolymus) by-products
in Rahmany sheep rations and its effect on animals performance. Twelve male growing Rahmany lambs aged
8 months with an average body weight 31.7 Kg ±0.38 were fed three rations (4 animals/ration). The three groups
were fed concentrate feed mixture (FCM) to cover 50% of nutrients requirements, plus kidney bean straw,
control (1 group), a 1:1 mixture of kidney bean straw and artichoke by-products (2 group) or artichoke by- st nd
products only (3 group). The roughages were fed ad lib. Daily live weight gain, dry matter intake and feed rd
conversion were measured. Digestibility trials were conducted to determine the nutrients digestibility and
nutritive values of the three tested rations. Rumen parameters were also measured. Obtained results showed
that artichoke by-products had higher value of CP (16.6%) compared with kidney bean straw (10.04%) and
nearly similar with CFM, but the CF content was higher in artichoke by-products (24.22%) compared with
20.72% for kidney bean straw and 11.17% for CFM. Amino acids estimation shows that artichoke by-products
had higher values in most amino acids, while it had lower values in a few amino acids compared with kidney
bean straw. The dry matter intake of group 3 was higher than the other tested rations. Nutrients digestibility
and nutritive values in terms of TDN and DCP for group 3 were the highest, followed by group 2 and group 1,
respectively. Concerning average daily gain, animal fed ration 3 recorded highest gain (262 g) followed by group
2 (257 g) then group 1 (248 g). The values of feed conversion recorded the best for group 1 followed by group
2, then group 3. Group 3 showed the lowest ruminal pH at zero time, while recorded the highest values (P