The color of a fish tank’s walls has been shown to have a\r\nmarked impact on the performance of Asian seabass (Lates calcarifer).The background color is known to influence the growth rates and\r\nfee...
The color of a fish tank’s walls has been shown to have a\r\nmarked impact on the performance of Asian seabass (Lates calcarifer).
The background color is known to influence the growth rates and\r\nfeed utilization of various fish species and research by a team based in\r\nThailand has demonstrated that it can have marked differences in the\r\nperformance of Asian seabass too.
The researchers stocked juvenile seabass averaging 16g into\r\n18 tanks of six different colors: transparent, white, black, red, green and\r\nblue – and compared the growth performance, feed utilization, digestive enzyme\r\nactivities, flesh quality, carcass composition, and hematological parameters.
After 10 weeks, they noted: “positive growth performance and\r\nfeed utilization were observed in fish reared against transparent, white, black\r\nor green backgrounds, while negative effects were noted for fish reared on the\r\nremaining treatments (p < .05)”.
Modulation of the main digestive enzymes was observed across\r\nthe six treatments, indicating different strategies for utilizing nutrients by\r\nthe fish. The activity ratio of trypsin to chymotrypsin was highest in the fish\r\nreared against a black background, followed by a white background.
Flesh quality, in terms of protein synthesis capacity and\r\nprotein turnover rate, indicated a significant improvement in the fish reared\r\nagainst white, black and green backgrounds, while the levels of myosin and\r\nactin was similar across the six color treatments. Carcass composition and\r\nhematological parameters showed no negative effects in either of the preferred\r\ntreatments.
The researchers concluded: “These findings indicate\r\nthat the most suitable background colors for rearing Asian seabass are black,\r\nfollowed by white and green, while transparent, red or blue backgrounds are\r\nunsuitable.”
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An abstract of their research, which was published in Aquaculture\r\nResearch can be accessed here.
Source: The Fish Site
Ditulis oleh
Tim Minapoli
Kontributor
Pakar di bidang akuakultur dengan pengalaman lebih dari 15 tahun. Aktif berkontribusi dalam pengembangan industri perikanan Indonesia.