期刊名称：Western Australia. Fisheries Department. Fisheries Research Reports
印刷版ISSN：1035-4549
出版年度：2008
卷号：178
页码：389-389
出版社：Government of Western Australia / Department of Fisheries
摘要：Over the last ten years, new cultivars of lupins have been developed by plant breeders which
have largely replaced the cultivars that were studied in previous research with shrimp. There was
a need to establish if the breeding programs had introduced changes in the new lupin cultivars
that would affect the nutritional value of the kernel meal for shrimp. We have determined the
performance of seven of the new cultivars of Lupinus angustifolius when used to replace fishmeal
in diets for the black tiger shrimp, Penaeus monodon. The L. angustifolius cultivars represent
about 80% of Australia’s lupin production. We have also compared the performance of the new
cultivars with that of solvent-extracted soybean meal. Three 50-d growth response experiments
were carried out using an array of 100 L circular aquarium tanks in an open seawater system.
Six replicate tanks each stocked with five juvenile shrimp were assigned to each treatment in
completely randomised design experiments. Lupin kernel meal and solvent-extracted soybean
meal was used to replace fishmeal in the experimental diets on an iso-nitrogenous basis. The
diets contained 454 g/kg or 420 g/kg of crude protein (on a dry matter basis), with the plant
proteins usually contributing 41.5% of the dietary protein. In all three experiments the growth
rate of shrimp fed the diets containing lupin kernel meal or soybean meal was as good as,
or better than, that obtained with the basal diet. Survival in all experiments was high (mean
~90%). FCRs were variable and high, reflecting the difficulty of not feeding to excess in small
aquarium systems, but there was generally little difference between the FCR of the basal diet
and that of the lupin kernel meal or soybean meal diets. This study has demonstrated that lupin
kernel meal can be used to replace at least 40 % of the fishmeal protein in diets for P. monodon,
and that the new cultivars perform equally to solvent-extracted soybean meal when used on a
protein-equivalent basis. From the amino acid analysis of the diets used in the experiments, it
appears that that the reported requirements of juvenile P. monodon for methionine significantly
overestimate the true requirements. Further clarification of this issue is warranted, as it is
possible that formulators are restricting the inclusion level of lupins in shrimp feeds in order
that they meet the reported requirement for methionine.
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