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1990) reported that there were no significant differences in fish weight, survival and protein efficiency ratio of channel catfish fed diets containing up to 40% DDG for 11 weeks.
Protein Efficiency Ratio (PER) indicates the relationship between weight gain in the test animals and the corresponding protein intake, while NPR relates the weight changes in the animals fed the test diets to those fed the control diet.
012) (Na/K ratio) FR, feeding rate; PR, protein retention; ER, energy retention; FCE, food conversion efficiency; PER, protein efficiency ratio.
Protein efficiency ratio and FE are utilized as quality indicators for fish diets and amino acid balance.
04) The protein efficiency ratio of the broiler starter chicks was not affected by the treatment (p>0.
Weight gain (WG), specific growth rate (SGR), feed efficiency (FE), protein efficiency ratio (PER), survival and whole body proximate composition were measured and calculated.
At the end of the feeding trial the total number and weight of fish in each tank were counted and measured for weight gain (WG), specific growth rate (SGR), feed efficiency (FE), protein efficiency ratio (PER), and survival.
Percent weight gain, feed conversion ratio, protein efficiency ratio, feeding rate, survival, hepatosomatic index and condition factor were calculated as follows:
The Feed Efficiency Ratio (FER) and Protein Efficiency Ratio (PER) were calculated according to the method of Chapman et al.