scholarly journals The Nutritive Value For Growing Pigs of Single Cell Protein (Saccharomyces Cerevisiae) Produced from Sulphite Spent Liquor

1973 ◽  
Vol 14 (1) ◽  
pp. 160-167
Author(s):  
Bjørn Næss ◽  
Per Slagsuold
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Single Cell ◽  
Nutritive Value ◽  
Single Cell Protein ◽  
Growing Pigs ◽  
Cell Protein ◽  
Spent Liquor

scholarly journals Feed consumption, growth and growth efficiency of rainbow trout (Oncorhynchus mykiss (Walbaum)) fed on diets containing a bacterial single-cell protein

1995 ◽  
Vol 73 (4) ◽  
pp. 591-603 ◽  
Author(s):  
W. M. K. Perera ◽  
C. G. Carter ◽  
D. F. Houlihan
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Single Cell ◽  
Growth Rates ◽  
Nutritive Value ◽  
Absorption Efficiency ◽  
Single Cell Protein ◽  
Feed Consumption ◽  
Cell Protein ◽  
Consumption Rates

The aim of the present study was to compare the nutritive value of bacterial single-cell protein (BSCP) with that of fishmeal in rainbow trout (Oncorhynchus mykiss (Walbaum)). Four diets were formulated to contain a total of 458 g crude protein/kg of which 0% was from BSCP in diet 1 (BSCP-0), 25% in diet 2 (BSCP-25), 62·5% in diet 3 (BSCP-62·5) and 100% in diet 4 (BSCP-100); the remainder of the protein was from fishmeal. There were two studies: in study 1, duplicate groups of twenty-five fish were fed on one of the four experimental diets at the rate of 20 g/kg body weight per d for 132 d. Feed consumption rates of individual fish were measured using radiography and the overall apparent absorption efficiency for N in each group was measured over a 2-week period. In study 2, N intake, consumption, absorption and accretion were measured for each fish under controlled environmental conditions (12 h:12 h light-dark regime; 14°). Higher dietary levels of BSCP resulted in significantly higher feed consumption rates but reduced N absorption efficiency and growth rates. However, a diet containing 25% BSCP (75% fishmeal) did not significantly influence growth rates, feed consumption and absorption efficiency compared with a 100% fishmeal diet. The N growth efficiencies were highest in fish fed on the diet containing the highest level of fishmeal and significantly decreased with increasing BSCP content. Construction of N budgets demonstrated that the reduction in growth in fish eating an increasingly larger proportion of BSCP was due to a decrease in N absorption and an increase in the excretion of urea.

Sign in / Sign up

Export Citation Format

Share Document