adc_nut: ADC of a nutrient (ADCnut)

In aquacultuR: A Comprehensive R Tool for Zootechnical Metrics

ADC of a nutrient (ADCnut)

Description

Function to calculate the Apparent Digestibility Coefficient of a nutrient in the dry matter fraction of a compound diet.

Usage

adc_nut(std_diet, std_feces, nut_diet, nut_feces)

Arguments

std_diet	numeric; value resembling the inclusion rate of standard in the experimental diet given to the livestock.
std_feces	numeric; value resembling the inclusion rate of standard in the feces recovered during the digestibility trial.
nut_diet	numeric; value representing the inclusion rate of the target nutrient in the diet.
nut_feces	numeric; value representing the inclusion rate of the target nutrient in the feces.

Value

returns a single numeric value in the interval [0, 1] which is the relative ADC for a single nutrient in the diet. If the value is not within the interval, an additional warning is returned.

Author(s)

Anıl Axel Tellbüscher

References

Bureau, D.P., & Hua, K. (2006): Letter to the Editor of Aquaculture. Aquaculture, 252, p.103–105.

Cho, C.Y., Slinger, S.J., & Bayley, H.S. (1982): Bioenergetics of salmonid fishes: energy intake, expenditure and productivity. Comp. Biochem. Physiol. 73B, p.25–41.

Examples

# 0.4 g/g (40%) CP on dry matter basis in feed
# 0.1 g/g (10%) CP on dry matter basis in feces
# 0.010 g/g (1%) digestibility standard in feed
# 0.045 g/g (4.5%) digestibility standard in feces

adc_nut(nut_diet = 0.4, nut_feces = 0.1, 
        std_diet = 0.01, std_feces = 0.045)

aquacultuR documentation built on Jan. 26, 2026, 5:07 p.m.