Mục tiêu của nghiên cứu nhằm đánh giá ảnh hưởng của bổ sung vitamin E lên năng suất và chất lượng trứng, qua đó xác định tỷ lệ vitamin E tối ưu nhất trong khẩu phần ăn dành cho cút đẻ đạt hiệu quả kinh tế cho người chăn nuôi. | Trường Đại học Nông Lâm TP. Hồ Chí Minh 17 Effects of dietary supplementation of vitamin E on reproductive performance of Japanese laying quails Khang T. K. Nguyen Nguyen T. Nguyen Suong T. M. Ngo amp Minh T. Vo Department of Animal Sciences Can Tho University Can Tho City Vietnam ARTICLE INFO ABSTRACT Research Paper The objective of this study was to evaluate the effects of dietary supplemen- tation of vitamin E on reproductive performance of Japanese JP laying Received March 01 2021 quails from 49 - 132 days of age. A total of 40 JP quails of 49 days of Revised May 25 2021 age were randomly assigned to 1 of 4 dietary treatments and there were Accepted June 01 2021 10 replicate cages per treatment with each JP quail per replicate. The ex- perimental diets were as follows 1 the control was a basal diet without vitamin E supplementation KPCS 2 E75 consisted of KPCS supple- mented with 75 mg vitamin E per kg of feed 3 E100 consisted of KPCS Keywords supplemented with 100 mg vitamin E per kg feed and 4 E125 consisted of KPCS supplemented with 125 mg vitamin E per kg of feed. The exper- iment was carried out for 12 weeks from December 23th 2019 to March Egg laying rate 15th 2020. The results showed that from 105-132 days of age the laying Egg weight rate and egg weight of the E100 and g control 90 and Japanese quail g and E75 and g were significantly higher P lt Vitamin E than those of the E125 and g respectively. There were no significant differences among treatments in feed consumption and feed con- version ratio P gt . Egg parameters such as eggshell weight and its Corresponding author percentage albumin percentage and eggshell thickness were significantly different among treatments P lt . Briefly it is suggested that either Nguyen Thi Kim Khang 75 mg or 100 mg of vitamin E should be added to the feed to improve the Email ntkkhang@ egg performance of JP quails. Cited as Nguyen K. T. K. Nguyen N. T.
