Ahlam R. Abdou - Academia.edu (original) (raw)

Papers by Ahlam R. Abdou

Australian Journal of Basic and Applied Sciences, 2019

The aim of this study was to evaluate the effects of anise, clove and thyme essential oils (EO) s... more The aim of this study was to evaluate the effects of anise, clove and thyme essential oils (EO) supply on ewes performance during late pregnancy and lactation. Forty Barki ewes (33.5±2.15 kg BW and 2-3 years old) were allocated into four equal groups, 10 animals each and received the same basal diet, berseem hay and concentrate supplement. Control ewes were fed their basal diet without oil supplementation (control group) while the other groups were supplemented with one of the three EO as follow; control diet plus 2 ml/day of anise EO (Anise group), 2 ml/day clove EO (Clove group) or 2 ml/day thyme EO (Thyme group). The oils were daily introduced individually to dams from late pregnancy period till weaning time. The results revealed a similar body weight among treatments during the late pregnancy and lactation period. The clove EO supply significantly improved (P<0.05) milk yield at certain stages of lactation in comparison with other experimental groups. Thyme EO significantly (P<0.05) increased milk total solids, solid not fat, protein and lactose, while the three EO increased (P<0.05) the total anti-oxidant capacity (P<0.01) compared to control’s milk and numerically increased the levels of unsaturated fatty acids profile, especially Linolenic C18:3n-3 (omega – 3) fatty acids that benefits consumer’s health. The digestibility trial was performed at the end of lactation in which a similar feed intake was recorded among treatment. The digestibility was significantly (P<0.05 and P<0.01) affected by the EO supply, except for crude fiber and acid detergent fiber. The nitrogen excretion via feces was reduced (P<0.01) and nitrogen retention increased (P<0.05) by the clove EO supply. Ruminal pH and ammonia –nitrogen did not affected by sampling time (P>0.05) while EO supply decreased pH (P<0.05) and ammonia increased (P<0.01) with anise and clove EO supply. Volatile fatty acids were increased (P<0.01) at 4 h post feeding and affected (P<0.05) by treatment × time interaction. Normal renal function and hepatic enzymes with EO supply, but decreased levels (P<0.01) of serum total protein with clove and thyme supply were obtained. Reduced levels of total cholesterol (TC) and triglycerides (TG) (P<0.01) were recorded with EO, whereas total lipids (TL) and lipase activity increased (P<0.01) with clove and thyme supply. Anise EO supplementation has variable effects on blood metabolites. Clove and thyme EO supply to dams affecting positively (P<0.01) their lambs growth rate till weaning. Therefore, the presence of EO in Barki ewes nutrition could be considered as a promising and useful alternative feed supplement to enrich the nutritional properties of the dairy products and consequently adding value and benefits to the animal products for consumer health.

Australian Journal of Basic and Applied Sciences, 2019

The aim of this study was to evaluate the effects of anise, clove and thyme essential oils (EO) s... more The aim of this study was to evaluate the effects of anise, clove and thyme essential oils (EO) supply on ewes performance during late pregnancy and lactation. Forty Barki ewes (33.5±2.15 kg BW and 2-3 years old) were allocated into four equal groups, 10 animals each and received the same basal diet, berseem hay and concentrate supplement. Control ewes were fed their basal diet without oil supplementation (control group) while the other groups were supplemented with one of the three EO as follow; control diet plus 2 ml/day of anise EO (Anise group), 2 ml/day clove EO (Clove group) or 2 ml/day thyme EO (Thyme group). The oils were daily introduced individually to dams from late pregnancy period till weaning time. The results revealed a similar body weight among treatments during the late pregnancy and lactation period. The clove EO supply significantly improved (P<0.05) milk yield at certain stages of lactation in comparison with other experimental groups. Thyme EO significantly (P<0.05) increased milk total solids, solid not fat, protein and lactose, while the three EO increased (P<0.05) the total anti-oxidant capacity (P<0.01) compared to control’s milk and numerically increased the levels of unsaturated fatty acids profile, especially Linolenic C18:3n-3 (omega – 3) fatty acids that benefits consumer’s health. The digestibility trial was performed at the end of lactation in which a similar feed intake was recorded among treatment. The digestibility was significantly (P<0.05 and P<0.01) affected by the EO supply, except for crude fiber and acid detergent fiber. The nitrogen excretion via feces was reduced (P<0.01) and nitrogen retention increased (P<0.05) by the clove EO supply. Ruminal pH and ammonia –nitrogen did not affected by sampling time (P>0.05) while EO supply decreased pH (P<0.05) and ammonia increased (P<0.01) with anise and clove EO supply. Volatile fatty acids were increased (P<0.01) at 4 h post feeding and affected (P<0.05) by treatment × time interaction. Normal renal function and hepatic enzymes with EO supply, but decreased levels (P<0.01) of serum total protein with clove and thyme supply were obtained. Reduced levels of total cholesterol (TC) and triglycerides (TG) (P<0.01) were recorded with EO, whereas total lipids (TL) and lipase activity increased (P<0.01) with clove and thyme supply. Anise EO supplementation has variable effects on blood metabolites. Clove and thyme EO supply to dams affecting positively (P<0.01) their lambs growth rate till weaning. Therefore, the presence of EO in Barki ewes nutrition could be considered as a promising and useful alternative feed supplement to enrich the nutritional properties of the dairy products and consequently adding value and benefits to the animal products for consumer health.