Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (32): 38-42.doi: 10.11924/j.issn.1000-6850.2014-0591

Special Issue: 生物技术 畜牧兽医

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The Influence of Chinese Herbal Medicine Feed Additiveon on Eel(Monopterus albus) Sex Hormone Levels

  

  • Received:2014-03-07 Revised:2014-03-07 Accepted:2014-05-19 Online:2014-11-20 Published:2014-11-20

Abstract: The female eel of initial average weight (41.2 2.3) g and the male eel of initial weight (113.5 5.6) g were took as the research objects. The test used minced fish feed with concentration of Chinese herbal medicine at the rate of 3%, 4%, 5%, respectively, and set up three repeats for each group. Continuous feeding was conducted for 31d (the first 10d was the training phase without Chinese herbal medicine, followed by 21d of trial phase with Chinese herbal medicine added). Blood sample was obtained to determine the content of serum estradiol and testosterone and evaluate the influence of the concentration of Chinese herbal medicine on sex hormone levels of eel. The experimental results show that: (1) compared with control group, estradiol and testosterone levels in blood of parent fish that fed without Chinese herbal medicine were significantly higher than that fed with Chinese herbal medicine (P <0.05), and serum levels of estradiol and testosterone decreased with the increase of concentration of Chinese herbal medicine (P <0.05); (2) the serum estradiol level of females and serum testosterone level of males declined with time (P <0.05) in each test group.