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：341-341
出版社：Government of Western Australia / Department of Fisheries
摘要：The experiment aimed to compare the biological value of a lupin kernel meal (L. angustifolius
cv Coromup) with fish meal and with soybean at two temperatures and two inclusion levels.
Inclusion levels of lupin and soybean were 15 and 25% at 14°C and 15% at 18°C. Diets were
formulated to be isonitrogenous and isoenergetic on a gross compositional basis and to have a
marginal crude protein content (40%). Inclusion of 15% reflected maximum industry inclusion
rates for lupin where as 25% inclusion reflected a higher level in order to investigate whether
performance changed at the higher level. The temperature of 14°C reflected an optimum
summer temperature and was compared with an elevated summer temperature of 18°C, but one
at which salmon would still be fed commercially. Following initial analysis a two-way ANOVA
compared the effects of diet and temperature using a data set restricted to the 15% inclusion.
There was no interaction between temperature and diet for any performance parameter analysed
and the key results were: for change in weight both diet (P = 0.009) and temperature (P = 0.001)
were significant factors, LM15 and 14°C showed significantly higher change in weight; weight
specific feed intake was also significantly higher for LM15 but it was higher at 18°C. This
meant growth efficiency was not different between diets but was lower at 18°C. Thus, in terms
of growth performance LM15 appeared to be the better diet at both temperatures. However,
exposure to plant meals as well as to high temperature, in addition to ingredient effects,
contributed to moderate / severe morphological changes observed in the intestinal mucosa.
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