adc_dm: ADC of DM

In aquacultuR: A Comprehensive R Tool for Zootechnical Metrics

ADC of DM

Description

Function to calculate the Apparent Digestibility Coefficient (ADC) of the dry matter fraction of a compound diet.

Usage

adc_dm(std_diet, dm_diet = 1, std_feces)

Arguments

std_diet	a numeric value, resembling the inclusion rate of standard in the experimental feed given to the livestock.
dm_diet	a numeric value in the interval [0, 1], being the dry matter content of the feed. The default is 1 gram per gram
std_feces	a numeric value, resembling the inclusion rate of standard in the feces recovered during the digestibility trial.

Value

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

Author(s)

Anıl Axel Tellbüscher

References

Bureau, D. P., Harris, A. M. & Cho, C. Y. (1999): Apparent digestibility of rendered animal protein ingredients for rainbow trout (Oncorhynchus mykiss). Aquaculture, 180, p.345-358.

Examples

# use function to calculate a single ADC value

# 900 g/kg (90%) dry matter content of feed
# 10 g/kg (1%) digestibility standard in feed
# 45 g/kg (4.5%) digestibility standard in feces
adc_dm(dm_diet = 0.95, std_diet = 0.01, std_feces = 0.045)


# function can also be used within a tidyverse pipeline.
digestdm %>% 
  dplyr::group_by(diet) %>%  
  dplyr::summarise(
    `ADC DM` = adc_dm(dm = dm, 
                      std_diet = std_feed, 
                      std_feces = std_feces))

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