Individual Monitoring of Activity and Lameness in Conventional and Slower-Growing Breeds of Broiler Chickens Using Accelerometers
Abstract
:Simple Summary
Abstract
1. Introduction
2. Materials and Methods
2.1. Subjects, Housing, and Husbandry
2.2. Accelerometer Attachment
2.3. Effects of Automated Monitoring Equipment on Behavioral Habituation
2.4. Welfare Assessment
2.5. Effects of Wearing an Accelerometer on Weight and Gait Score
2.6. Accelerometer Data Processing for Activity
2.7. Statistical Analysis
2.7.1. Evaluating the Effects of Wearing an Accelerometer on Behavior
2.7.2. Evaluating the Effects of Wearing an Accelerometer on Weight and Gait Score
2.7.3. Evaluating the Effect of Breed, Sex, and Weight on ActivityA
2.7.4. Evaluating the Association between ActivityA and Gait Score
3. Results
3.1. The Effect of Accelerometer Attachment on Behavior
3.2. The Effect of Accelerometer Attachment on Weight and on Gait Score
3.3. Evaluating the Effect of Breed, Sex, and Weight on ActivityA
3.4. Evaluating the Association between AcitivityA and Gait Score
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Age (Days) | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CNV (N = 15) | A | D | A | D | WA | |||||||||||||||||||||||
SGH (N = 25) | A | D | A | D | A | D | WA | A | D 1 | |||||||||||||||||||
SGN (N = 15) | A | D | A | D | A | D | A | D | WA |
Behaviors | Definition (Modified from An Ethogram Supplied by University of Guelph as Part of An Alignment of Methods in the Wider Study [11]) |
---|---|
State Behaviors (Mutually Exclusive) Measured as Frequencies | |
Walking | Slow movement forward where one foot is always placed on the ground and breast is above ground. Start from movement, a slight shift in body weight just before foot is raised off ground. Ends when both feet are placed onto the ground and when neither foot has moved for 2 s or, when another behavior commences. |
Sit Inactive | Sat down, immobile with entire breast touching the ground and legs tucked underneath bird. Start from cessation of movement for 2 s. Ends when another state behavior commences (event behaviors can occur simultaneously). |
Standing | Immobile on both legs with body not touching ground. Start from cessation of movement for 2 s. Ends when another state behavior commences (event behaviors can occur simultaneously) (modified from [41]). |
Feeding | Downward pecking in feeder while sitting or standing. Start from the first peck at feed. Ends when bird has not pecked at feed for 3 s or when another behavior commences (modified from [42]). |
Drinking | Downward pecking in drinker while sitting or standing. Start from the first peck in drinker defined as direct beak contact with water. Ends when bird has not lowered head to drink for 3 s or when another behavior commences. |
Preen Sitting | Moving the beak through feathers while sitting. Start at the first movement of beak moving through feathers. Ends when beak loses contact with feathers for 3 s or when another behavior commences. |
Preen Standing | Moving the beak through the feather while standing. Start at the first movement of beak moving through feathers. Ends when beak loses contact with feathers for 3 s or when another behavior commences. |
Gait Score | Definition |
---|---|
0 | The bird displays smooth, fluid locomotion. Typically, the foot is picked up and put down smoothly and each foot is brought under the bird’s center of gravity as it walks (rather than the bird swaying). Often, the toes are partially curled while the foot is in the air. |
1 | The bird has a slight defect in its gait that is difficult to define precisely. The bird may take unduly large strides, be unsteady, or wobble when it walks, which produces an uneven gait, but the problem leg is unclear/cannot be easily identified. |
2 | The bird has a definite and identifiable gait abnormality, but this does not affect its ability to move. The bird may make short, quick, unsteady steps with one leg, but is not sufficiently lame to seriously compromise its ability to move, i.e., maneuver, accelerate, and run. |
3 | The bird has an obvious gait defect that affects its ability to move. The bird may have a limp, jerky, or unsteady strut, or splay one leg as it moves. The bird often prefers to squat when not coerced to move and will not run. |
4 | The bird has a severe gait defect. The bird is capable of walking, but only with difficulty and when driven or strongly motivated. Otherwise, it squats down at the first available opportunity. |
5 | The bird is incapable of sustained walking on its feet. Although it may be able to stand, the bird cannot walk except with the assistance of the wings or by crawling on the shanks. |
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Pearce, J.; Chang, Y.-M.; Abeyesinghe, S. Individual Monitoring of Activity and Lameness in Conventional and Slower-Growing Breeds of Broiler Chickens Using Accelerometers. Animals 2023, 13, 1432. https://doi.org/10.3390/ani13091432
Pearce J, Chang Y-M, Abeyesinghe S. Individual Monitoring of Activity and Lameness in Conventional and Slower-Growing Breeds of Broiler Chickens Using Accelerometers. Animals. 2023; 13(9):1432. https://doi.org/10.3390/ani13091432
Chicago/Turabian StylePearce, Justine, Yu-Mei Chang, and Siobhan Abeyesinghe. 2023. "Individual Monitoring of Activity and Lameness in Conventional and Slower-Growing Breeds of Broiler Chickens Using Accelerometers" Animals 13, no. 9: 1432. https://doi.org/10.3390/ani13091432
APA StylePearce, J., Chang, Y.-M., & Abeyesinghe, S. (2023). Individual Monitoring of Activity and Lameness in Conventional and Slower-Growing Breeds of Broiler Chickens Using Accelerometers. Animals, 13(9), 1432. https://doi.org/10.3390/ani13091432