Animal Production Fundamentals: Inputs, Management, and System Performance

Animal production

The planned conversion of inputs into outputs that people value—like meat, milk, eggs, and fiber.

Elements of production

Different factors that affect performance, including feed quality, genetics, health, and environment.

Biological system

Involves genetics, physiology, nutrition, reproduction, and health of the animal.

Physical system

Comprises land, pasture, buildings, handling facilities, equipment, and water supply.

Management system

Encompasses people, routines, records, decision-making, and biosecurity.

Economic and market system

Includes costs, product specifications, price signals, and risk considerations.

Extensive systems

Production systems that rely on grazing and land area with lower costs per animal but often lower output per hectare.

Intensive systems

Production systems that heavily utilize purchased feeds, resulting in higher output per hectare.

Semi-intensive systems

Production systems that mix grazing with supplemental feeding or partial confinement.

Stocking density

The number of animals kept in a certain area, affecting pathogen spread and management costs.

Classic factors of production

Land, labor, capital, and management, which interact to influence agricultural productivity.

Land

Includes pasture, soil type, topography, and climate which limit stocking rates.

Labor

Refers to the number and skill of workers that impact management and observation.

Capital

Buildings, machinery, and technology that enable efficiency but increase fixed costs.

Management as a factor

The planning and decision-making that enhance the effectiveness of land, labor, and capital.

Nutrition issues

Factors affecting animal growth like poor feeder access or incorrect diet.

Environment issues

Factors like cold spots or high ammonia affecting feed intake.

Health issues

Problems such as subclinical coccidiosis that impede animal growth.

Animal housing

A controlled environment designed to promote health, welfare, and productivity of animals.

Core functions of housing

Protection from weather, control of disease, support of normal behavior, and enablement of observation.

Ventilation

Process that removes heat and moisture from animal housing.

Heat stress

Condition that reduces feed intake and fertility in animals.

Cold stress

Increases energy needs in animals, causing them to eat more just to stay warm.

Space allowance

Critical for reducing aggression and ensuring hygiene among animals.

Flooring types

Options like solid flooring or slats that affect comfort and sanitation for animals.

Water systems

Essential for ensuring animals have adequate and clean access to water.

Dry matter (DM)

The non-water portion of feed, crucial for fair nutrient comparison.

Average daily gain (ADG)

Measure of growth calculated as the difference between final and initial weight divided by the days.

Feed conversion ratio (FCR)

The ratio of feed intake to weight gain, indicating feeding efficiency.

Ruminants

Animals like cattle that ferment fiber in their rumen for efficient forage utilization.

Monogastrics

Animals that rely on enzymatic digestion, needing higher-quality diets.

Pasture management

Planned use of forage resources to meet animal needs while maintaining pasture health.

Stocking rate vs carrying capacity

Stocking rate is the number of animals on an area, while carrying capacity is the sustainable limit.

Rotational grazing

System where animals graze a paddock for a short time to allow plant regrowth.

Forage conservation

Strategies like making hay or silage to stabilize feed supply.

Key performance indicators (KPIs)

Metrics across enterprises to track growth, reproduction, and mortality.

Fixed vs variable costs

Fixed costs do not change with numbers, while variable costs scale with production.

Break-even analysis

Determining the output or price needed to cover costs.

Biosecurity

Practices to reduce the risk of disease introduction and spread.

Animal welfare

Refers to the health, comfort, and ability of animals to express normal behavior.

Disease triangle

A model explaining disease occurrence through the interaction of agent, host, and environment.

Manure management

Practices for handling manure to minimize environmental risks while using it as a resource.

Sustainability in production

Goal of balancing productivity with environmental responsibility and efficiency.

Food safety and traceability

Measures that ensure product safety and allow for tracking in case of an outbreak.

Pre-slaughter handling

Practices that minimize stress and injury to animals to ensure product quality.