Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2021, Vol. 11 ›› Issue (12): 100-104.doi: 10.11923/j.issn.2095-4050.cjas2020-0235

Special Issue: 水产渔业

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Experimental Rearing Effects of a New Breed of Hybrid Yellow Catfish: An Evaluation

SONG Limin(), ZHANG Wei, LIU Xiaolian, XU Xiaoli, JIANG Jufeng, JIAO Wanming, KAN Zheng, YANG Wenying, WU Huimin()   

  1. Tianjin Fishery Research Institute, Tianjin 300221, China
  • Received:2020-10-28 Revised:2021-02-24 Online:2021-12-20 Published:2022-01-14
  • Contact: WU Huimin E-mail:limindom@sina.com;wuhm2005@163.com

Abstract:

To improve the germplasm of yellow catfish (Pelteobagrus fulvidraco) under cultivation in Tianjin and increase the economic and ecological benefit of the cultivation, a new breed of hybrid yellow catfish ‘Huangyou 1’ was introduced to Tianjin in 2019 by the research group. The growth, disease resistance and production of nitrogen and phosphorus were studied systematically by comparing characters. The results showed that the growth rate and weight gain rate (WGR) of hybrid yellow catfish were significantly higher than those of common yellow catfish (P<0.05), and the feed conversion ratio (FCR) was lower than that of common yellow catfish, but the difference was not significant (P>0.05); the main death diseases of hybrid yellow catfish were body surface ulceration and gill rot. There was no significant difference in the incidence of body surface ulceration between hybrid yellow catfish and common yellow catfish (P>0.05). The incidence of gill rot in hybrid yellow catfish was significantly higher than that of common yellow catfish (P<0.05), while the incidence of other diseases was significantly less than that of common yellow catfish (P<0.05). The total survival rate of hybrid yellow catfish was significantly higher than that of common yellow catfish (P<0.05). The increment of ammonia nitrogen, nitrite and total phosphorus in the tail water by gaining 1 kg body weight of hybrid yellow catfish was significantly lower than that of common yellow catfish (P<0.05). Although the increment of total nitrogen in the tail water by gaining 1 kg body weight of hybrid yellow catfish was also less than that of common yellow catfish, the difference was not significant (P>0.05). Therefore, the characters of growth, disease resistance, nitrogen and phosphorus production per unit weight gain of hybrid yellow catfish ‘Huangyou 1’ are better than those of common yellow catfish, and hybrid yellow catfish ‘Huangyou 1’ is suitable to be popularized and cultured in Tianjin.

Key words: Hybrid Yellow Catfish, Comparing Characters, Growth, Disease Resistance, Nitrogen Production, Phosphorus Production

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