Feeding of Abalone Juveniles with Two Species of Sargassum (Sargassum cristaefolium and Sargassum polycystum)
Julita R. Ungson
College of Fisheries, Mariano Marcos State University
Currimao, Ilocos Norte, Philippines
corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
The species preference, growth and survival rates of juveniles of Haliotis asinina fed with two species of Sargassum i.e., Sargassum cristaefolium and Sargassum polycystum, were evaluated over a 75 day culture period. Proximate composition of the two species of Sargassum was also determined. The test organism preferred S. cristaefolium (80%) more than S. polycystum (20%). Growth rate in terms of shell length and weight as well as the survival rate did not differ significantly among juveniles fed with two species of Sargassum. Protein content of S. polycystum (6.26%) is higher than S. cristaefolium (3.45%)
INTRODUCTION
Abalone is highly valued marine mollusk with very high export potential. It is present in Philippine waters and inhabits rocky reef coast areas facing the outer sea. The Philippines is considered as one of the major producers of abalone from capture fishery. Other countries with commercial fishery of abalone are Japan, Korea, the Pacific Coast of North America, South Africa, Australia, New Zealand, and Mexico. The Philippines is showing a consistent increase in abalone production in contrast with other abalone producing countries where abalone is decreasing (FAO, 1996). In 1991, the Philippines exported nearly 300,000 kg of live and processed abalone worth over US$2 million to Australia, US and Asian countries. Two years . . .
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