The Effcet of Combined Use of Several Alternnative Protein Sources in Fingerling Rainbow Trout Diets

Abstract

A feeding experiment was conducted to investigate the effect of combined use of several alternative protein sources for fish meal in diets for fingerling rainbow trout Oncorhynchus mykiss. In the con trol diet, brown fish meal (BFM) was used as the sole protein source to provide 40% crude protein . In the test diets, 60 or 80% of the BFM protein in the control diet was isonitrogenously replaced by several combinations of soybean meal (SBM), meat meal (MM), malt protein flour (MPF), corn gluten meal (CGM), and dried brewer's yeast (DBY). These diets were fed to the fish with an initial mean weight of 9.4 g for 6 weeks at 16°C.Combinations of SBM and MPF, SBM and CGM, and MM and MPF at the 60% replacement level improved the weight gain, feed efficiency, and protein retention of the fish relative to the replacement of BFM by SBM or MM alone, and there were no significant differences in these values between the combi nation group and the control group. Combined use of SBM, MM and MPF at the 60% replacement lev el showed similar growth and feed performances to the above mentioned SBM and MPF, or MM and MPF diets, however, the performances at the 80% replacement level were inferior. Addition of DBY to the 80% replacement level diet improved the weight gain to the same level attained by the control group.These results suggest that the combined use of two alternative sources such as SBM and MPF, SBM and CGM, and MM and MPF improve rearing performance of fingerling rainbow trout as com pared with the use of SBM or MM alone, and that the combined use of SBM, MM, MPF, and DBY at a proper ratio can substitute the 80% of BFM protein.

Effects of Animal Proteins in Practical Diets on Growth and Economic Performance of Climbing Perch,Anabas testudineus(Bloch)

“…In contrast, Yamamoto, Unuma, and Akiyama (1995) found that a combination of protein from brown fishmeal, meat meal, and malt protein flour (40:35:25) produced no significant difference from a fishmeal-based diet, but did successfully replace 60% of the fishmeal protein in rainbow trout diets; while a combination of fishmeal, soybean meal, meat meal, malt protein flour, and dried brewer's yeast can replace 80% fishmeal protein without supplementation of crystalline amino acids. Also, growth performance was significantly lower when soybean meal, meat meal , or malt protein flour were used separately.…”

Growth, nutrient utilization, oxidative condition, and element composition of juvenile red sea bream Pagrus major fed with fermented soybean meal and scallop by-product blend as fishmeal replacement

“…Therefore, it is evident from the present study that a blend of fisheries by-product and plant protein with subsequent fermentation is an effective method to utilize alternative protein sources in aquafeeds. Blending of different ingredients is often recommended to achieve balanced nutritional composition and complementary amino acid profiles, and to mask unpalatable substances present in feed ingredients [1,17,[19][20][21]. Fermentation is a technique commonly used in the food industry, and may decrease or eliminate antinutritional constituents from oilseeds [5] and increase bioavailability of nutrients as well as overall nutritional quality [6].…”

Potential of meat meal to replace fish meal in extruded dry diets for barramundi, Lates calcarifer (Bloch). I. Growth performance

“…Meat meal, either alone or in combination with other terrestrial protein concentrates such as soybean meal and gluten meal, has been successfully used for the partial replacement of fish meal in diets for cultured carnivorous fish including channel catfish, Ictalurus punctatus (Mohsen & Lovell 1990; Lovell 1992), yellowtail, Seriola quinqueradiata (Shimeno, Masumoto, Hujita, Mima & Ueno 1993; Shimeno, Mima, Imanaga & Tomaru 1993), rainbow trout, Oncorhynchus mykiss (Watanabe, Pongmaneerat, Sato & Takeuchi 1993; Yama moto, Unuma & Akiyama 1995; Bureau et al . 2000), hybrid bass, Morone saxatilis × M. chrysops (Webster, Tiu & Tidwell 1997), sea bream, Sparus aurata (Davies, Nengas & Alexis 1991; Nengas, Alexis & Davies 1999), and European sea bass, Dicentrarchus labrax (Langar & Metailler 1989).…”