首页> 外文期刊>Aquaculture Research >Effect of feeding frequency on growth, survival and feed utilization in fingerlings of Catla catla (Hamilton), Labeo rohita (Hamilton) and Cirrhinus mrigala (Hamilton) in outdoor rearing systems.
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Effect of feeding frequency on growth, survival and feed utilization in fingerlings of Catla catla (Hamilton), Labeo rohita (Hamilton) and Cirrhinus mrigala (Hamilton) in outdoor rearing systems.

机译:饲喂频率对室外饲养系统中Catla catla(Hamilton),Labeo rohita(Hamilton)和Cirrhinus mrigala(Hamilton)的鱼种生长,存活和饲料利用率的影响。

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摘要

Fingerling rearing of Indian major carps, Catla catla, Labeo rohita and Cirrhinus mrigala, were conducted in concrete tanks under a polyculture system at a density of 0.3 million fry ha-1 to evaluate the effect of one, two or three feedings per day on growth, survival and feed utilization. Fry were fed with formulated supplementary diet at 10% of biomass per day during the first 15 days, followed by 8% in the next 15 days and 6% thereafter, for 60 days. Feeding of fish three times daily led to higher growth (103.9+or-8.5 mm/10.3+or-2.4 g) than those feeding twice (100.2+or-4.8 mm/9.9+or-1.5 g) or once (97.2+or-9.8 mm/9.4+or-2.1 g) daily, although the values were not significantly different (P>0.05). Survival rate ranging between 72.3% and 75.1% also did not vary significantly (P>0.05) among the treatments. However, higher feeding frequencies resulted in better feed utilization as evident from decreasing feed conversion ratio values. The present study suggested requirement of a higher feeding frequency for rohu compared with catla and mrigal..
机译:在混养系统下,在混凝土罐中以30万苗ha-1的密度在混凝土罐中进行印度主要鲤鱼Catla catla,Labeo rohita和Cirrhinus mrigala的鱼种饲养,以评估每天一次,两次或三次饲喂对生长的影响,存活率和饲料利用率。在最初的15天中,以每天10%的生物量每天向配方鱼中补充配方饲料,然后在接下来的15天中以8%的时间,然后在6%的时间内持续60天。每天饲喂三次鱼比两次饲喂(100.2+或-4.8 mm / 9.9 +或-1.5 g)或饲喂一次(97.2+或-1.5g)的鱼(103.9+或-8.5 mm / 10.3 +或-2.4 g)有更高的生长每天-9.8 mm / 9.4 +或-2.1 g),尽管该值无显着差异(P> 0.05)。治疗之间的存活率在72.3%和75.1%之间也没有显着差异(P> 0.05)。但是,较高的饲喂频率可提高饲料利用率,这可从降低饲料转化率值中看出。目前的研究表明,与卡塔拉和桑格里尔相比,红花hu需要更高的饲养频率。

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