The present experiment was carried out to evaluate the effect of dietary supplementation with betaine (BET) and thyme oil (THY) and their mixtures (MIX) on nutrients digestibility, caecum characteristics, growth performance, carcass traits, and economic efficiency of growing rabbits. A total number of 72 growing New Zealand white (NZW) male rabbits, 5-week-old and with average weight 616±7.82 g were divided into 9 experimental groups. The control group was fed a basal diet without supplementation (T1), whereas the other groups were fed the same basal diet supplemented with 1500 mg BET (T2), 750 mg BET (T3), 1000 mg THY (T4), 500 mg THY (T5), 1500 mg BET + 1000 mg THY (T6), 1500 mg BET+500 mg THY (T7), 750 mg BET + 1000 mg THY (T8), 750 mg BET + 500 mg THY (T9). The experimental period extended for 8 weeks. The results indicated that feed dry matter digestibility and digestible energy were significantly (P<0.05) improved with rabbit fed T2, T3, T4, T6, and T9 diets. In contrast, a significant (P<0.001) decrease in total volatile fatty acids and ammonia-N concentration of cecum content was recorded with rabbits fed T4, T5, T7, T8 and T9 diets compared with (T1) those fed the control diet. Feed intake, hematological parameters, and carcass traits were not significant (P<0.05) affected by dietary supplementation. Daily weight gain was significantly (P<0.001) increased in rabbit fed the supplemented diets except those fed T8 diet. Feed conversion ratio and economic efficiency recorded the best results with rabbits fed T2, T4 and T6 diets. Dietary supplementation with 1500 mg betaine or 1000 mg thyme oil/kg diet or mixture of theme with the same levels are recommended to improve the feed utilization and growth performance parameters and health status of NZW rabbits.

It is with great pleasure that I write this editorial to welcome you to the IJCBR. This journal provides a platform for publication of original and reviews research articles, short communications, letter to editor, thesis abstract, conference report, and case studies. These types of publication are directed at the interface of the fields of cancer and biomedical research.The IJCBR relies on a distinguished expert of the Advisory and Editorial Board Members from the top international league covering in depth the related topics. They timely review all manuscripts and maintain highest standards of quality and scientific methodology and ethical concepts. Meanwhile, we take all possible means to keep the time of the publication process as short as possible.I take this chance to welcome your contributions to the IJCBR and have every expectation that it will soon become one of the most respected journals in both the fields of cancer and biomedical research.

Armenian parents; established in the Nile Valley early 20 th century.He received his primary education in local religious French schools, by ( 1956); he got his National secondary school certificate, scientific section. By (1961), he received his Bachelor degree of Science in Chemistry and

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