Comprehensive Poultry Welfare and Behavior: Chickens, Turkeys, and Broilers

What are the four primary behavioral needs of chickens?

Nesting, perching, foraging, and dustbathing.

What is the primary factor that triggers feather pecking in laying hens?

Stress (during rearing or in general).

How does the lack of edible enrichment contribute to feather pecking?

It leads to redirected foraging behaviors toward other birds.

Name two examples of edible enrichment used to reduce feather pecking.

Pecking balls and hay.

How does stocking density affect feather pecking?

Lower stocking densities are associated with reduced feather pecking.

What is the primary management purpose of beak trimming?

To slow the frequency of feather pecking and prevent injuries related to cannibalism.

Why is the beak considered a vital sensory organ for chickens?

It contains mechanoreceptors, nociceptors, and trigeminal receptors to detect chemical, thermal, and painful stimuli.

What is a major welfare drawback of traditional hot blade beak trimming?

It can cause chronic pain.

In hot blade trimming, what process is used to seal the wound?

Cauterization.

Which beak treatment method is most common in large Canadian hatcheries?

Infrared beak treatment.

How long does it typically take for the beak tip to slough off after infrared treatment?

One week to 10 days.

Why is infrared beak treatment considered more welfare-friendly than hot blade trimming?

It causes less acute pain.

What is the anatomical site of wing muscle attachment in poultry that is highly susceptible to fractures?

The sternum (keel bone).

What is the reported upper incidence rate of keel fractures in some poultry flocks?

Over $97\%$.

Besides falls and collisions, what is a metabolic cause of broken bones in hens?

Osteoporosis.

Why are palpitations considered an unreliable method for detecting fractures?

They require significant experience and are mostly effective only for healed fractures.

Which diagnostic tool is effective for detecting keel bone fractures but is rarely used due to cost?

CT (Computed Tomography) scans.

Why is dissection a preferred method for longitudinal skeletal studies despite being lethal?

It allows for detailed inspection of bone health and healed fractures.

What welfare issue arises in broiler barns as birds approach their target weight?

High stocking densities leading to crowding and overheating.

Which chemical byproduct of damp litter causes irritation to a bird's mucous membranes and skin?

Ammonia NH3

What are two common skin conditions caused by prolonged contact with damp litter?

Breast blisters and foot lesions (contact dermatitis).

How can producers manage humidity in floor-housed broilers?

By topping off wet litter with dry litter.

By what percentage did broiler growth increase between 1957 and 2005?

Greater than 400%

What was the reduction in the Feed Conversion Ratio (FCR) for broilers between 1957 and 2005?

It was reduced by $50\%$.

Why do fast-growing broilers sometimes suffer from 'sudden death'?

The cardiovascular system cannot keep up with the demands of rapid tissue and weight gain.

How does rapid growth affect meat quality in broilers?

It can lead to breast muscle myopathies.

What behavioral indicator suggests a broiler is experiencing leg pain or weakness?

A shorter duration of standing before laying down.

Why do fast-growing broilers often appear 'impaired' or 'round'?

Skin stretching and feather growth cannot keep up with the speed of body growth.

What is a major consequence of reduced mobility in broilers regarding resource access?

Difficulty reaching food and water.

Why must broiler breeders be subjected to feed restriction practices?

They will develop severe health problems if allowed to eat to their full appetite.

List two methods used to restrict feed in broiler breeders.

Decreasing food quality and decreasing the frequency of feeding.

What are the common welfare issues shared between meat turkeys and broilers?

Lameness, injurious pecking, and contact dermatitis.

What specific management practice is required for turkey breeders that differs from natural behavior?

Artificial mating.

Why is access to water critical for duck welfare?

It is necessary for performing cleaning and preening behaviors.

What is a potential biosecurity risk of providing open water to ducks?

It can attract wild birds and spread disease.

What controversial practice is associated with the production of Mule ducks?

Forced feeding.

What tool is typically used for bill trimming in breeder ducks?

Scissors.

What is the status of battery cages in Europe?

They are banned.

By what year has Egg Farmers of Canada pledged to stop using battery cages?

2036

During which window of the slaughter process is an animal conscious and able to feel pain?

From rearing/catching until stunning.

Why is mechanical harvesting often considered better for welfare than manual catching?

It reduces the risk of human error and injury during labor-intensive night catching.

What is the primary welfare benefit of modular loading?

The bird is not carried; instead, they remain in drawers that are loaded directly into the truck.

What is the state of the bird during shackling in an electrical stunning system?

Conscious.

What is the state of the bird during shackling in a Controlled Atmosphere Stunning (CAS) system?

Unconscious.

Which two groups primarily collaborate to establish animal welfare regulations?

The government and veterinarians.

The _____ is the site of muscle attachment for wings and a frequent location for fractures in laying hens.

Sternum

Concept: Cauterization in beak trimming

Definition: The process of burning the wound with a hot blade to seal it and stop bleeding.

How does the beak's role as a sensory organ affect the ethics of beak trimming?

Trimming removes mechanoreceptors and nociceptors, impairing the bird's ability to explore and experience the world.

What is 'redirected foraging' in the context of feather pecking?

When birds peck at feathers of flock mates because they lack edible substrate to perform natural foraging.

Why is catching a high-risk period for poultry welfare?

It is labor-intensive, done in the dark, and injuries sustained can result in hours of stress before stunning.

True or False: Feather pecking is exclusively a result of bird boredom.

False (it is influenced by stress, genetics, gut microbiota, and lack of enrichment).

In the poultry processing sequence, which step immediately follows stunning?

Neck cutting.

What is the primary welfare concern regarding broiler breeder 'excessive drinking'?

It is often a coping mechanism for severe hunger due to feed restriction.

How does 'melanin level' in a chick's beak influence infrared beak treatment?

Different melanin levels change how the beak absorbs the infrared beam and the resulting effect on the tissue.

Identify the housing system where keel fractures can still occur despite the absence of falls or collisions.

Battery cages.