Lever, C., Lymbery, A.J., and Doupe, R.G. (2004) Preliminary comparisons of yield and profit achieved from different rainbow trout (Oncorhynchus mykiss) production systems in inland Western Australia. Journal of Applied Aquaculture, 16 (1 and 2). pp. 63-74.

PDF (Published Version) Restricted to Repository staff only

Abstract

Farmers throughout the wheatbelt of Western Australia are interested in farming rainbow trout, Oncorhynchus mykiss, in saline groundwater on salt-affected farmland, to generate an alternative source of income. We compared the relative productivity and profitability of three different production systems: extensive (trout stocked in earthen ponds and totally reliant on natural food); semi-intensive (trout stocked in earthen ponds and provided with supplementary diet); intensive (trout stocked in closed, recirculating tanks). The yield of fish increased with increasing production intensity. The mean wet weight (±SE) of trout after 4 months of grow-out was 61.3±2.7 g in extensive systems, 157.9±5.2 g in semi-intensive systems and 137.9±3.9 g in intensive systems, giving mean yields of 10.8 kg/pond (13.5 kg/ha), 27.9 kg/pond (34.8 kg/ha) and 54.9 kg/tank (21.1 kg/m3), respectively. A preliminary economic analysis of the different production systems showed that the increases in yield were sufficient to balance the extra operating costs involved in semi-intensive systems, but not in intensive systems. We conclude that semi-intensive production systems deserve further study for the commercially viable production of rainbow trout from saline groundwater in Western Australia.

Item ID:	9413
Item Type:	Article (Research - C1)
ISSN:	1545-0805
Keywords:	saline groundwater; rainbow trout; farm pond production; yield; profitability; Oncorhynchus mykiss
Date Deposited:	23 Mar 2010 04:47
FoR Codes:	05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050211 Wildlife and Habitat Management @ 50% 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060204 Freshwater Ecology @ 50%
SEO Codes:	83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830102 Aquaculture Fin Fish (excl. Tuna) @ 100%
Downloads:	Total: 3
	More Statistics