Effects of Dietary Supplementation with Selenium and Vitamin E on Growth Performance, Nutrient Apparent Digestibility and Blood Parameters in Female Sika Deer (Cervus nippon)
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To evaluate the effects of selenium (Se) and vitamin E (Vit E) on female sika deer. This study was conducted using a 3 × 2 + 1 factorial experiment. Depending on treatment design, the deer were fed with the basal diet supplemented with 0.2, 0.3, and 0.4 mg of selenium as well as 100 and 200 IU of vitamin E per kg of dry matter (DM). Accordingly, six groups named G1 to G6 are involved in this study. In addition, group G0 was available in the study, in which the deer were fed with only basal diet. The results show that the final body weight (BW), average daily gain (ADG), and apparent digestibility of crude protein, ether extract, and neutral detergent fiber of the deer in G1 to G6 increased as the selenium level increased from 0.2 to 0.3 mg per kg of DM (P < 0.05). Higher IgG content of the deer was observed with the intake of selenium and vitamin E (P < 0.05). The total content of protein of the deer in G3 was higher than that in G0 (P < 0.05), and the activity of glutathione peroxidase increased following the increase in the supplementation levels of selenium and vitamin E (P < 0.05). Furthermore, selenium had significant effects on the concentration of T4 and T3 (P < 0.05). The optimum levels of selenium and vitamin E for 1-year-old female sika deer were 0.3 mg and 100 IU per kg of dietary DM, respectively.
KeywordsTrace minerals Selenium Vitamin E Metabolism Requirement
This study is supported by a project funded by the Natural Science Fund of Jilin Province, China (no. 20170101034JC), a Major Research Project of Science and Technology of Jilin Province, China (no.: 20140203018NY), a China Science and Technology Planning Project (no. 13NY07), a China Major Research Project of Science and Technology of Changchun City, Jilin Province, China (no. 15SS08), a Science and Technology Development Plan Project of Jilin Province, China (no. 20190304007YY).
Compliance with Ethical Standards
This study was conducted according to the guidelines of the Declaration of Helsinki (2008), and all procedures involving animals were approved by the animal welfare committee of the Institute of Special Animals and Plant Science, Chinese Academy of Agricultural Science (Jilin, Jilin Province, China) from May 12, 2015 to July 22, 2015(Protocol no. 2015ISAP0620).
Conflict of Interest
The authors declare that they have no conflict of interest.
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