Salim, I., Abo El-Azayem, E., Bassiouni, H. (2025). " Effect of dietary supplementation of laurus nobilis leaves meal on growth performance and blood antioxidant status of growing rabbits". Egyptian Poultry Science Journal, (), -. doi: 10.21608/epsj.2025.82534.1169
Ibrahim Hemdan Salim; Enayat Hassan Abo El-Azayem; Hanaa Awad Bassiouni. "" Effect of dietary supplementation of laurus nobilis leaves meal on growth performance and blood antioxidant status of growing rabbits"". Egyptian Poultry Science Journal, , , 2025, -. doi: 10.21608/epsj.2025.82534.1169
Salim, I., Abo El-Azayem, E., Bassiouni, H. (2025). '" Effect of dietary supplementation of laurus nobilis leaves meal on growth performance and blood antioxidant status of growing rabbits"', Egyptian Poultry Science Journal, (), pp. -. doi: 10.21608/epsj.2025.82534.1169
Salim, I., Abo El-Azayem, E., Bassiouni, H. " Effect of dietary supplementation of laurus nobilis leaves meal on growth performance and blood antioxidant status of growing rabbits". Egyptian Poultry Science Journal, 2025; (): -. doi: 10.21608/epsj.2025.82534.1169
" Effect of dietary supplementation of laurus nobilis leaves meal on growth performance and blood antioxidant status of growing rabbits"
Articles in Press, Accepted Manuscript, Available Online from 19 May 2025
1poultry Nutrition - animal production research inst., ARC Egypt
2rabbit breeding department , Animal production research inst., ARC Egypt
Abstract
The present study aimed to investigate the effects of different levels of dietary supplementation of bay laurel (Laurus nobilis L.) leaves meal (LNL) on growth performance, carcass traits, blood constituents, hematology and plasma antioxidant status of New Zealand White rabbits. Weaned New Zealand White rabbits 5 weeks old (n = 40, mean body weight 648 g) were randomly allotted to four dietary groups. The Control group was fed a basal diet without (LNL); the experimental groups received the basal diet with 1, 2 and 4 g LNL meal/kg diet (Groups LN1g, LN2g and LN4g, respectively). The experimental period lasted for 8 weeks. Our results indicated that group LN4g rabbitsrecorded significantly the highest body weight at 9,11 and 13 weeks of age followed by LN2g. Also, LN4g recorded significantly the best feed conversion ratio followed by LN2g in comparison with the control group. There were no significant differences due to LNL supplementation in carcass characteristics,blood hematology, blood biochemistry and plasma antioxidant status. However, LN supplementation numerically reduced abdominal fat, total plasma cholesterol (T.Ch), triglycerides (TG) and low-density lipoproteins (LDL) cholesterol compared to control, while, increased total protein, globulin and HDL cholesterol and the differences were not significant. Total antioxidant capacity (TAC) and glutathione peroxides activity (GPx) and Catalase enzyme were not significantly affected by LNL supplementation. Generally, the results of the study revealed that bay laurel leaves were useful as a natural supplementation to promote growth of rabbits, and 4g LNL/kg diet improved body weight FCR and antioxidant status and could reduce the negative effects of summer conditions in rabbits.