在池塘育苗中应用灯光提高饲料成本效益

Dzikri Wahyudi, Mardjoko Mardjoko, Fitria Nawir, Gagan Garnawansah, Waluyo Waluyo, Sri Hidayati, Muhammad Ar Rozzaaq Nugraha
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引用次数: 0

摘要

鲳鱼(Trachinotus blochii)是一种引进鱼类,目前国内市场(雅加达和其他大城市)和国际市场(如新加坡、台湾、香港和中国)对它的需求都在增加。鲳鱼可以在池塘中养殖,因为它能承受盐度变化(5-40 ppt)。在这项研究中,使用安装在网箱中的灯光来维持鲳鱼育苗,将对夜间聚集作为饲料的具有正趋光性的天然食物(浮游动物、虾和小型鱼类)作出反应。因此,希望利用这些生物作为替代饲料来源可以提高饲料效率。这项研究的紧迫性在于确定如何努力节省人工饲料的使用和抑制寄生虫的攻击。对两个不同样本的平均值进行了 t 检验,以比较鲳鱼的生长速度和健康状况。使用灯光的研究结果表明,鲳鱼的生长达到最佳状态,存活率为 100%,饲料转化率(FCR)值为 0.9,两个月内生产的鲳鱼规格为 80-100 克/头,鱼种也很健康。寄生虫侵袭指标低于无光照处理,寄生虫侵袭率为 25%(有光照);范围为 25%-75%(无光照),寄生虫侵袭强度为 6-8(有光照);范围为 11-35.67(无光照)。开灯时,鲳鱼籽总是积极活动,使用灯光可以有效捕捉小虾或小型甲壳类动物等生物,从而将鲳鱼籽作为替代食物进行消化(从鲳鱼的胃内容物和肠中观察到)。光照还表明,寄生虫攻击鲳鱼的现象较少。
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Application Of Lights in The Nursery of Snubnose Pompano Trachinotus blochii (Lacepède, 1801) In Ponds as An Effort to Increase Feed Cost Efficiency
The snubnose pompano (Trachinotus blochii), which is an introduced fish, is currently in increasing demand, both for the domestic market (Jakarta and other big cities) and international markets such as Singapore, Taiwan, Hong Kong, and China. The snubnose pompano can be cultivated in ponds because it is tolerant to changes in salinity (5-40 ppt). In this study, the use of lights installed in cages used to maintain the snubnose pompano nursery will be responded to natural food that is positively phototactic (zooplankton, shrimp, and small fish species) which will gather as feed at night. So, it is hoped that the use of these organisms as an alternative feed source can increase feed efficiency. The urgency of this research is to determine efforts to save on the use of artificial feed and to suppress parasite attacks. A t-test was carried out to compare the averages of two different samples, on the growth rate and health of snubnose pompano fish. Research using lights resulted in optimum growth of snubnose pompano with 100% survival rate, feed conversion ratio (FCR) value of 0.9 and produced snubnose pompano size 80–100 g/head within two months as well as healthy fish seeds. With indicators of parasitic attack that are lower than the treatment without light with a prevalence value of 25% (with lights); range of 25%-75% (without lights) and intensity 6-8 (with lights); range 11-35.67 (without light). The snubnose pompano seeds are always actively moving when the light is on, the use of the light can effectively catch organisms such as small shrimp or small crustaceans so that the snubnose pompano seeds can be used to be digested as an alternative food (as observed in the stomach contents and intestines of the snubnose pompano). The light also indicates that parasitic attacks on the snubnose pompano are less common.
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