optimal protein level in a semipurified diet for juvenile greenlip
abalone haliotis laevigata
T.A.
Coote, P.W.
Hone, R.J. Van Barneveld, G.B. Maguire-2000
Aquaculture Nutrition, 6(4): 213-220
Abstract:
To
optimise dietary protein level in relation to growth, semipurified diets
with an essential amino acid profile similar to that of the soft body
profile were fed for 59 days to young greenlip abalone, Haliotis laevigata
(initial shell length, 15-25 mm). Animals were housed in 10-L acrylic tanks,
with flow-through seawater supplied at 1 L/min (20°C, salinity = 36 g/L).
Protein level of feeds ranged from 122 g/kg to 461 g/kg crude protein (CP)
on an “as is” basis. Second-order polynomial regression analysis of
specific growth rate indicated that maximal growth occurs at 270 g/kg CP.
The protein and energy components of the feed were estimated to have a
digestibility of 71.7% and 55.6%, respectively.
(Eure Peninsula Aquafeeds, PO Box 34, Cummins, SA, Australia, e-mail : coote@senet.com.au)