Evaluation of the influence of Lupinus angustifolius kernel meal on dietary nutrient and energy utilization efficiency by rainbow trout (Oncorhynchus mykiss)

Abstract

This study examined the utilization efficiencies of three diets when fed to rainbow trout in a 28-day growth study. Each of the diets was fed at one of three ration levels, and an additional starved treatment was also included. The diets differed by an increasing concentration of lupin (Lupinus angustifolius cv. Myallie) kernel meal (MKM) inclusion. Two lupin kernel meal inclusion levels of 15% (MKM15%) and 30% (MKM30%) were studied. The diets were formulated to equivalent digestible protein and energy specifications based upon the predetermined digestibility values for each of the ingredients used. There were no significant differences in digestible protein level among the diets. However, a significantly higher level of digestible energy of both MKM diets was measured, as well as a significantly higher level of digestible phosphorus in the MKM30% diet. No significant differences between the diets were observed with respect the utilization of dietary digestible energy. Over the full data range, the energy utilization efficiency was described by the linear equation of; y = 0.747x ) 26.174, R 2 = 0.985. Efficiency of protein utilization over lower digestible protein intake levels was also linear (y = 0.599x ) 0.142, R 2 = 0.905), but over the full range was better described by a nonlinear function. The comparison of the three diets in this study shows that the dietary inclusion of lupin kernel had no significant effect on the gain of either protein or lipid energy relative to protein or lipid energy intake, respectively. Protein energy use efficiency constants varied depending on the feed intake level, but were not significantly affected by diet type. The efficiency of use of lipid energy for lipid energy retention was also not affected by diet type. The findings of this study demonstrate that the inclusion of lupin kernel meal, at up to 30% of the diet, does not affect the ability of rainbow trout to utilize the dietary digestible protein and energy of diet in which it is included. KEY WORDS

Evaluation of sesame (Sesamum indicum) seed meal as a replacer for soybean meal in the diets of rainbow trout (Oncorhynchus mykiss Walbaum, 1792)

“…Jahanbakhshi et al (2012) indicated that the substitution compliance of sesame seed meal and corn gluten could be between 16-48% for beluga (Huso huso) fingerlings. Generally accepted usage rates of the vegetable protein source identified for rainbow trout are 20% soybean meal (Teles et al, 1994), 56 g/kg concentrated potato protein (Xie and Jokumsen, 1998), 10% cotton seed meal (Cheng and Hardy, 2002), 20% canola and pea flour (Thiessen et al, 2003), 20% rice protein concentrate (Palmegiano et al, 2006), 30% lupine flour (Glencross et al, 2008) and 20% safflower meal (Ustaoğlu Tiril and Kerim, 2015).…”

Criteria for Safe Use of Plant Ingredients in Diets for Aquacultured Fish

“…Besides the relatively high oligosaccharide content (Glencross et al, 2003a) and quinolizidine alkaloids , lupin species contain low levels of ANFs. Following dose-response studies, it has been estimated that sweet lupin kernel meal may be included in diets for rainbow trout up to 30 (Glencross et al, 2008a) or 40% (Farhangi and Carter, 2001) without significantly influencing growth and nutrient utilization. At 50% inclusion level, the maximum level tested (Farhangi and Carter, 2001), growth, feed conversion ratio, and energy efficiency ratio were negatively affected although trypsin and amylase activity in the pyloric caeca were not affected.…”

Feeding high inclusion of whole grain white lupin (Lupinus albus) to rainbow trout (Oncorhynchus mykiss): effects on growth, nutrient digestibility, liver and intestine histology and muscle fatty acid composition

“…Lupin seeds have been used successfully as a replacement for ¢sh meal in aquaculture feeds of salmonids and other marine ¢sh (De la Higuera, Garcia-Gallego, Sanz, Cardenete, Suarez & Moyano 1988;Robaina, Izquierdo, Moyano, Socorro, Vergara, Montero & Fernandezpalacios 1995;Burel, Boujard, Corraze, Kaushik, Boeuf, Mol, Van der Geyten & Kuhn 1998;Burel, Boujard, Kaushik, Boeuf,Van der Geyten, Mol, Kuhn, Quinsac, Krouti & Ribaillier 2000;Carter & Hauler 2000;Farhangi & Carter 2001;Aslaksen, Kraugerud, Penn, Svihus, Denstadli, Jorgensen, Hillestad, Krogdahl & Storebakken 2007;Glencross, Hawkins, Evans, Rutherford, Dods, McCa¡erty & Sipsas 2008). Incorporation of between 40% and 50% of lupin seed meal into diets for rainbow trout has been considered as the maximum level of inclusion in terms of growth and nutrient digestibility.…”