The survey on the lame dairy cow prevalence was carried out from March to May 2013 at Tan Thanh Dong commune, Cu Chi district, Ho Chi Minh City. A total of 326 dairy cows of Holstein Friesian crossbreed from 44 small farmers were observed. These cows were evaluated for lameness by determination of the score of the arched back, standing appearance (from 1 to 5), the cow was lamed when the score was equal or lower than 3. The prevalence of the lame cow number in this survey was very high (41.4 percent). This resulted from the cows were usually kept indoor and from the cows with their hooves were not trimmed periodically. The lame prevalence in the cows with long hooves was higher (67.7 percent) than in the cows with normal hooves (30.9 percent) (P 0.01). The lame rate increased by the breeding farrow. The lame rate in the first, second, third breeding farrow was 27.1 percent,41.6 percent,58.3 percent respectively. The cows were washed with 3 or 4 times per day facing more risk with lameness than the cows were washed with 2 times per day (43.9 percent vs 27.1 percent
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