To develop functional diets for ornamental fish

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Project title

Code/計畫編號

100農科-10.3.1-漁-F3(5)

Translated Name/計畫中文名

功能性觀賞魚飼料之研發

Project Coordinator/計畫主持人

Shyn-Shin Sheen

Funding Organization/主管機關

Council of Agriculture,Executive Yuan

Department/Unit

Department of Aquaculture

Website

https://www.grb.gov.tw/search/planDetail?id=2299234

Year

2011

Start date/計畫起

01-04-2011

Expected Completion/計畫迄

31-12-2011

Bugetid/研究經費

1000千元

ResearchField/研究領域

漁業

" 90億美元，年增長率8％，是一個前景相當看好的產業。觀賞魚受到廣大民眾喜愛的原因在於色彩鮮豔、飼料取得方便及容易自行孵化繁殖，加上其體態多變、種類繁多，因此確定了觀賞魚產業的蓬勃發展。由於野生的神仙魚居住的環境具有豐富的綠藻，綠藻具有相當豐富的類胡蘿蔔色素，因此野生的神仙魚往往具有相當鮮艷的體色，但是人工飼養的環境中就沒辦法培育出如野生神仙般漂亮的體色呈現，所以在飼料中加入綠藻或人工合成色素是可增加神仙魚體色。大部分的觀賞魚產於東南亞，必須承受長期的航空運輸。目前活魚袋運輸系統，降低了觀賞魚的貨物運輸重量，也使觀賞魚可以採取較高密度包裝來降低運送的成本，觀賞魚在包裝前利用一些維生素C及中草藥的餵食，加強其免疫力，可以讓受緊迫的觀賞魚死亡率降至最低，是一種更為積極的方法。本計畫為（1）利用綠藻粉，蝦紅素，天然色素添加至飼料中製作神仙魚及錦鯉的揚色飼料（2）利用添加維生素 C及中草藥-小青龍湯於飼料中降低孔雀魚運輸時所造成的緊迫以增加存活率。" "Today with a turnover of US $9 billion a year and an annual growth of 8％, the ornamental fish is a global component of international trade and is one of the most economic and profitable areas of fish farming activities. The live-bearing category of ornamental fishes are one of the most popular of all ornamental fishes with the fish hobbyists and entrepreneurs because of the fact that they are brightly colored, accept all kind of food and breed prolifically to produce living free swimming young ones. The two main aspects that determine the trade and prosperity of the ornamental fish industry are health and pigmentation of the ornamental fishes. To achieve consumer acceptance and an optimum price, angel fish and koi must appeal to the eye with its reddish-orange pigmentation. This color is derived from the deposition of carotenoids in its tissue. Since fish, like other animals, are not able to denovo synthesis of carotenoids, they have to obtain them from dietary sources. Angel fish (Pterophyllum scalare) are generally reared in eutrophic ponds, in which chlorophyta constitute the dominant flora. As algae are rich in carotenoids, angel fish cultured in such environments exhibit an excellent intensive coloring. However, this coloration can not be achieved under aquarium rearing condition, if carotenoid sources are not added into the fish diets. As most of the ornamental fish produced in Southeast Asia are destined for export, the fish must not only be attractive but also robust to withstand long air transportation. The polyethylene-bag transport system has greatly reduced the shipping weight of ornamental fish consignments and made them feasible for air transportation. The use of packaging technology for air transport to increase fish leading density and improve post-shipment survival is critical to the industry. The key liming factor to decrease stress of fish in transportation system is to increase immune system of fish. A variety of techniques have been developed to manage the air transportation. They include starving fish before packaging or diets treated with vitamin C or Chinese herbal medicine to increase the ability of immune system. The present study will be designed to determine (1) the most suitable levels of algal powder, astaxanthin, and natural pigments inclusion in the diets to achieve the best skin pigmentation in angel fish; (2) the most suitable levels of vitamin C and Chinese herbal medicine inclusion in the diets to achieve the highest survival of Guppy (Poecilia reticulate) during air transportation."

Keyword(s)

孔雀魚
神仙魚
運輸
揚色
錦鯉
Guppy
Pterophyllum scalare
Transportation
Pigmentation enhancement
Colored carp

DSpace CRIS

To develop functional diets for ornamental fish

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