Duck gait: Relationship to hip angle, bone ash, bone density, and morphology

Area of Science:

• Animal Science
• Biomechanics
• Veterinary Medicine

Background:

• Rapid growth in meat ducks necessitates strong skeletal structures for mobility.
• Fast growth rates may compromise bone development, potentially affecting duck welfare and production efficiency.
• A link between skeletal development and mobility issues in meat ducks is suspected.

Purpose of the Study:

• To investigate the relationship between gait score, skeletal parameters, and hip angle in commercial Pekin ducks.
• To understand how skeletal changes influence mobility in fast-growing meat ducks.
• To identify potential welfare and production implications associated with impaired duck mobility.

Main Methods:

• Commercial Pekin ducks (14, 21, and 32 days old) were weighed and gait scored using a 3-point system.
• Quantitative computed tomography (QCT) was used for full-body scans to measure bone density and pelvic hip angles.
• Femur and tibia were extracted for analysis of bone dimensions, fat content, and ash content.

Main Results:

• Body weight decreased with poorer walking ability within age groups.
• Bone width and length increased with age, while hip angles widened with age and poorer gait scores.
• Bone density increased with age and improved gait score; femur ash content decreased with age and poorer gait scores.

Conclusions:

• Skeletal changes, including wider hip angles and reduced bone density, are associated with impaired mobility in fast-growing meat ducks.
• These findings highlight the need for further research into the connection between duck mobility and skeletal development.
• Understanding these relationships can inform strategies to improve duck welfare and production outcomes.