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Calculate urinary energy fraction contribution for a ration component

Source: R/core_model_ration_quality.R
calc_ration_urinary_energy_fraction.Rd

Applies species-specific urinary energy fractions to a ration composition share to compute the contribution of a feed component to urinary energy losses.

Usage

calc_ration_urinary_energy_fraction(
  species_short,
  feed_ration_fraction,
  feed_urinary_energy_ruminant = NA_real_,
  feed_urinary_energy_pigs = NA_real_
)

Arguments

species_short

Character. Code identifying the livestock species. Supported values include:

  • PGS: pigs

  • CML: camels

  • CTL: cattle

  • BFL: buffalo

  • SHP: sheep

  • GTS: goats

feed_ration_fraction

Numeric. Proportion of a specific feed component in the total ration, expressed as its fraction of diet dry matter intake (fraction). Within each herd_id and cohort, proportions should sum to 1.

feed_urinary_energy_ruminant

Numeric. Fraction of feed's gross energy that is excreted in urine for ruminants (fraction).

feed_urinary_energy_pigs

Numeric. Fraction of feed's gross energy that is excreted in urine for pigs (fraction).

Value

Numeric. Contribution of the feed component to the fraction of total diet gross energy that is excreted in urine (fraction).

Details

The urinary energy fraction contribution uses the animal-specific parameter:

  • Ruminants (CTL, BFL, CML, SHP, GTS): feed_ration_fraction * feed_urinary_energy_ruminant

  • Pigs (PGS): feed_ration_fraction * feed_urinary_energy_pigs

This function is part of the run_ration_quality_module().

See also

run_ration_quality_module