RUFAS.biophysical.animal.animal_module_constants module

class RUFAS.biophysical.animal.animal_module_constants.AnimalModuleConstants

Bases: object

A class used to store constants related to the animal module.

DEFAULT_BODY_CONDITION_SCORE_5: float = 3.0

Score on a scale of 1-5 indicating how fit an animal is. This default is used because the score is neither set nor calculated in the Animal module.

DEFAULT_MAX_STOCKING_DENSITY: float = 1.2

The default maximum stocking density for a pen. This value is used when a pen is created dynamically during the simulation.

DEFAULT_NUM_STALLS: int = 100

The default number of stalls to be created in a new pen if no specific value is provided.

DEFAULT_NUM_STALLS_FOR_CALF_PEN: int = 110

The default number of stalls to be created in a calf pen.

DEFAULT_NUM_STALLS_FOR_GROWING_PEN: int = 800

The default number of stalls to be created in a growing pen.

DEFAULT_NUM_STALLS_FOR_CLOSE_UP_PEN: int = 200

The default number of stalls to be created in a close-up pen.

DEFAULT_NUM_STALLS_FOR_LAC_COW_PEN: int = 850

The default number of stalls to be created in a lactating cow pen.

DEFAULT_NUM_STALLS_FOR_GROWING_AND_CLOSE_UP_PEN: int = 500

The default number of stalls to be created in a combined growing and close-up pen.

DEFAULT_DRY_MATTER_INTAKE: float = 10.0

Default dry matter intake of a ration when this value is not known for an animal (kg).

DEFAULT_NET_ENERGY_DIET_CONCENTRATION: float = 1.0

Default metabolizable energy density of a ration when this value is not known for an animal.

DEFAULT_NDF_PERCENTAGE: float = 0.3

Percentage of neutral detergent fiber in a ration when this value is not known for an animal.

DEFAULT_TDN_PERCENTAGE: float = 0.7

Percentage of total digestible nutrition in a ration when this value is not known for an animal.

VERTICAL_DIST_TO_MILKING_PARLOR: float = 0.1

The default vertical distance from the animal pens to the milking parlor.

HORIZONTAL_DIST_TO_MILKING_PARLOR: float = 1.6

The default horizontal distance from the animal pens to the milking parlor.

DEFAULT_HOUSING_TYPE: str = 'open air barn'

The default housing type for animals in the simulation.

DEFAULT_BEDDING_TYPE: str = 'sawdust'

The default bedding material used in the pens.

DEFAULT_PEN_TYPE: str = 'freestall'

The default type of pen to be created in the simulation.

DEFAULT_MANURE_HANDLER: str = 'manual scraping'

The default method of manure handling used in those pens created dynamically during the simulation.

DEFAULT_MANURE_SEPARATOR: str = 'screw press'

The default manure separator system used in those pens created dynamically during the simulation.

DEFAULT_MANURE_STORAGE: str = 'slurry storage outdoor'

The default type of manure storage system used in those pens created dynamically during the simulation.

DAILY_MILK_VARIATION_MEAN: float = 0

Mean of the daily milk production variation from the estimated milk production, kg/day

DAILY_MILK_VARIATION_STD_DEV: float = 1.0

Standard deviation of the daily milk production variation from the estimated milk production, kg/day

MILK_CRUDE_PROTEIN: float = 3.2

Milk crude protein content, percentage.

MILK_LACTOSE: float = 4.85

Milk lactose content, percentage.

DMI_CONSTRAINT_FRACTION: float = 0.2

The +/- fraction of DMI estimated allowed for ration formulation.

MINIMUM_DMI: float = 1.0

Minimum estimated DMI instituted for all animals, kg/day

MINIMUM_DAILY_DMI_RATIO: float = 0.01

Minimum estimated DMI (kg/day), as a fraction of body_weight in kg

MINIMUM_DMI_LACT: float = 2.0

Minimum estimated DMI for lactating cows, kg/day. Note that in the dataset used to generate the equation, the mimimum DMI is 3.94 kg/day (Reed et al. 2015)

MINIMUM_DMI_DRY: float = 2.0

Minimum estimated DMI for dry cows, kg/day. Note that in the dataset used to generate the equation, the minimum DMI is 7.1 kg/day (Appuhamy 2018)

MINIMUM_PHOSPHORUS: float = 0.0

Minimum phosphorus estimate, g/day

MINIMUM_CALCIUM: float = 0.0

Minimum calcium estimate, g/day

MINIMUM_RATION_NDF: float = 25.0

Minimum percentage of a pen’s ration’s dry matter that must be neutral detergent fiber (NDF) (percent).

MAXIMUM_RATION_NDF: float = 45.0

Maximum percentage of a pen’s ration’s dry matter that must be NDF (percent).

MINIMUM_RATION_FORAGE_NDF: float = 15.0

Minimum percentage of a pen’s ration’s dry matter that must be NDF from forages (percent).

MAXIMUM_RATION_FAT: float = 7.0

Maximum percentage of a ration’s dry matter that must be fat (percent).

MILK_REDUCTION_KG: float = 0.25

Milk reduction amount for each failed ration optimization attempt, kg

MINIMUM_HEIFER_DAILY_GROWTH_RATE: float = 0.5

Minimum daily growth for heifers, kg.

PROTEIN_UPPER_LIMIT_FACTOR: float = 1.5

Factor used to generate the upper limit for metabolizable protein content in ration formulation.

MINIMUM_AVG_PEN_MILK: float = 15

Minimum allowable average milk production, for a given pen, as used in ration formulation, kg/animal

MINIMUM_TDN_DISCOUNT: float = 0.6

Minimum allowable TDN discount for use in energetic calculations, unitless.