Kinematic study of the locomotion of two crossbreds of lambs

Abourachid, Anick; Laville, Élisabeth

doi:10.1051/animres:19970303

Cited by 3 publications

(5 citation statements)

References 7 publications

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“…However, the kinematic model can enable us to give a first estimate of these parameters (Fig 14 and Fig 15). The travel of this angle θ1 is about 60° which is consistent with the results given in [30,36] . The travel of the displacement inferior to 85 mm also seems physically acceptable.…”

Section: Comparison Between Measured and Calculated Outputssupporting

confidence: 91%

“…The knee angle θ4 and the position of a central point G1 are given respectively in Fig 12 and Fig 13. The maximum deviation between the measure and the model for the knee angle is less than 5°. This amplitude and the form of the curve are consistent with the experimental results presented in [30,36] . The displacement in the direction of the x axis is a linear function of time which is explained by the constant speed of the sheep during the experimentation.…”

Section: Comparison Between Measured and Calculated Outputssupporting

confidence: 91%

“…The periodic signals of the angular inputs have been built by using the cycle period (the sum of a stance phase duration and a swing phase duration) which has been determined on the positional curves. It is notable that the order of magnitude of the amplitude of the wrist (ϕi(t) with i=1..2) and ankle (ϕi(t) with i=3..4) angles in Fig 11 is close to the values given in [30,36] .…”

Section: Determination Of the Positional Inputssupporting

confidence: 60%

“…Kinematic data come from a study on the sheep locomotion [30] . The sheep moved in a 3-meter-wide and 15 meter long passage.…”

Section: Experimental Setup and Calibrationmentioning

confidence: 99%

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Bio-inspired Topological Skeleton for the Analysis of Quadruped Kinematic Gait

Boudon

Linares

Abourachid³

et al. 2018

J Bionic Eng

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In bio-inspired design activities, Nature is a basis of knowledge. Over the last twenty years, many solutions to measure and analyze human or animal gaits have been developed (VICON system, X-ray radiography...). Although, these methods are becoming more and more accurate, they are quite expensive, long to set up and not easily portable. In this paper, a method called the bio-inspired topological skeleton is suggested in order to complement the classic videography process and to enable animal gait analysis. A new predictive kinematic model with closed-loops of an unguligrade quadruped will be suggested. This kinematic model includes three segments per leg and takes into account the scapula movements. The proposed method allows us to improve the accuracy of the kinematic input data measured from a single video including an additional artefact. To show the benefits of this method, joint parameters that are difficult to measure are derived symbolically from a kinematic model and compared with experimental data.

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Section: Comparison Between Measured and Calculated Outputssupporting

confidence: 91%

Section: Comparison Between Measured and Calculated Outputssupporting

confidence: 91%

Section: Determination Of the Positional Inputssupporting

confidence: 60%

“…Kinematic data come from a study on the sheep locomotion [30] . The sheep moved in a 3-meter-wide and 15 meter long passage.…”

Section: Experimental Setup and Calibrationmentioning

confidence: 99%

See 2 more Smart Citations

Bio-inspired Topological Skeleton for the Analysis of Quadruped Kinematic Gait

Boudon

Linares

Abourachid³

et al. 2018

J Bionic Eng

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show abstract

“…Despite differing values, kinematic data from healthy dogs trotting on a treadmill showed similar patterns of sequence of angular displacement, for both forelimb and hind limbs [ 7 , 19 ]. A kinematic study that evaluated gait abilities of two lamb crossbreeds in three different environments also detected that the amplitude of angular variation rose gradually toward the distal extremity of the forelimbs and hind limbs [ 32 ]. On the other hand, a two-dimensional kinematic study in healthy dogs during walking found little variation in angular displacement values of the hind limb joints [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

Kinematic analysis of forelimb and hind limb joints in clinically healthy sheep

et al. 2014

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BackgroundVariations associated with sex, age, velocity, breed and body geometry should be considered in the determination of kinematic parameters for a gait considered normal.Therefore, this study aimed to evaluate kinematic patterns of forelimbs and hind limbs in clinically normal sheep from two different age groups walking at a constant velocity. The hypothesis was that the age may influence sagittal plane kinematic patterns. Fourteen clinically healthy female sheep were divided into Group 1 – seven animals aged from 8 to 12 months, and Group 2 - seven animals aged above 5 years. Before starting data collection, the sheep were trained to be conducted for walking in a pre-determined space at constant velocity. A minimum of 5 valid trials were obtained from the right and left sides of each sheep. Data were analyzed by use of a motion-analysis program. Flexion and extension joint angles (maximum, minimum, displacement), and angular velocity (maximum, minimum) were determined for the shoulder, elbow, carpal, hip, stifle, and tarsal joints.ResultsWithin each group, no significant differences were observed between the right and left limbs in all kinematic variables. Significant differences were observed in the following kinematic parameters between G1 and G2: minimum angle (G1 < G2), angular displacement (G1 > G2), maximum angular velocity (G1 > G2), minimum angular velocity (G1 > G2) of the carpus; angular displacement (G1 > G2), minimum angular velocity (G1 > G2) of the shoulder; minimum angle (G1 > G2), angular displacement (G1 < G2) of the tarsus; maximum angular velocity (G1 < G2) of the stifle; maximum angular velocity G1 > G2 of the hip. The lengths of both forelimbs and hind limbs differed between groups (G1 < G2). The Froude number differed between groups for forelimbs and hind limbs.ConclusionsIn conclusion, sheep of two different ages walking at a constant velocity present, within the same group, similar kinematic data between sides, and exhibit some differences in kinematic variables that may be age-related or body size. Further studies using sheep walking at similar Froude numbers are necessary to exclude the body size.

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What can kinematics tell us about the affective states of animals?

Guesgen

Bench

2017

Anim. welf.

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An animal's welfare state is intrinsically linked to its affective state. Evidence suggests that sentient, conscious animals can experience a range of affective states, such as pain, fear or boredom as well as positive affects like joy, curiosity, satiation or lust. In the behavioural assessment of animal welfare, there is increasing recognition that it is not simply which behaviours an animal engages in but also the quality of its movement. Kinematics is an approach which is being more widely applied to the behavioural assessment of animal welfare. Kinematics is a field of mechanics that describes the movement of points on a body by defining these points in a coordinate system and precisely tracking how they change in terms of space and time. A major opportunity exists for using kinematic technology to inform our understanding of the emotional state of animals. This review argues that kinematics is a useful methodology for identifying and characterising movement indicative of an animal's affective state. It demonstrates that kinematics: i) appears useful in detecting subtleties in the expression of affective states; ii) could be used in conjunction with, and add extra information to, affective tests (for example, an approach/avoidance paradigm); and iii) could potentially, eventually, be developed into an automated affective state detection system for improving the welfare of animals used in research or production. Furthering our knowledge of animal affective states using kinematics requires engagement from many areas of science outside of animal welfare, such as sports science, computer science, engineering and psychology.

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Kinematic study of the locomotion of two crossbreds of lambs

Cited by 3 publications

References 7 publications

Bio-inspired Topological Skeleton for the Analysis of Quadruped Kinematic Gait

Bio-inspired Topological Skeleton for the Analysis of Quadruped Kinematic Gait

Kinematic analysis of forelimb and hind limb joints in clinically healthy sheep

What can kinematics tell us about the affective states of animals?

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