Ganesalingam, Z.2021-03-222021-03-222012UWU/ANS/08/0052http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/6150/UWULD%20ANS%2008%200052-09042019093158.pdf?sequence=1&isAllowed=yThe development of commerce based on Kappaphycus alvarezii is an outstanding example of widespread farming that evolved from simple methods refined mainly by faimers in the field. This phenomenon has led to current production exceeding 150,000 dry tons/yr from at least ten countries. Coastal areas of tropical regions where seaplanes are the main source of income. The information base for Kappaphycus alvarezii is expanding but has not yet achieved useful stability. Much "knowledge" about the biology of Kappaphycus alViirezii is practical conjecture extrapolated from studies of other seaweeds. Kappaphycus alvarezii production is discussed in light of the plants' biology and the agronomic techniques employed by farmers. Socio-economic factors discussed but emphasis is laid on the characteristics of cultivar populations, factors involving farm location and practical agronomy. Producing red alga Kappaphycus alvarezii were cultured in Kiranchi bay, Kilinochi over two months period using monoline and cage culture methods. Seawater temperature ranged from 28 to 31 °C. Ammonia accounted for 55.1-89.8% it depending on the season, and salinity did not change significantly. Temperature was the only environmental factor that explained 96% of the observed variation in Kappaphycus alvarezii growth rate The highest average growth rates June to August. The growth rates of Kappaphycus alvarezii were exponential during April to June. As propagule weight increased the growth rate was reduced.enAnimal Science Degree ProgrammeThesis