کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9475810 1625454 2005 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of floor type on the locomotion of dairy cows
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Influence of floor type on the locomotion of dairy cows
چکیده انگلیسی
The slatted, crude concrete floor was found to have the lowest coefficient of friction (0.31), the solid, crude concrete floor had a higher friction coefficient (0.58) and rubber mats had an intermediate friction value (0.46). In comparison with the sand surface the cows walked more slowly on the slatted, crude concrete floor, with considerably shortened strides and with the rear feet placed at greater distance behind the front ones. On the solid, crude concrete floor the cows took shorter strides and steps than on the sand surface, but the speed did not differ significantly. Elastic rubber mats on the solid as well as on the slatted concrete floor increased the length of strides and steps. In comparison with non-lame and mildly lame cows, moderately lame animals walked more slowly and had a shorter stride and step length. Analyses within each lameness degree revealed that the moderately lame cows walked with a significantly smaller step angle (which corresponds to a wider posture) on crude solid and slatted concrete in comparison with both the continuous and the slatted rubber floor. The moderately lame cows walked on the rubber mats with roughly the same step angle as on the sand surface. Comparisons of cows with different lameness scores within a floor type showed that the moderately lame cows compared with the non-lame ones had a smaller step angle on the concrete flooring while there were no significant differences between lame and non-lame animals when they walked on yielding surfaces. Step asymmetry increased progressively from the non-lame to the moderately lame cows on all floor types. Cows with moderate lameness walked most symmetrically on the sand and on the floor with continuous rubber covering. It was concluded that yielding rubber mats had a positive effect on locomotion in both lame and non-lame cows irrespective of breed and number of lactations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Animal Behaviour Science - Volume 93, Issues 3–4, September 2005, Pages 183-197
نویسندگان
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