An investigation on milking disturbances of mammary system [of cows]
1981
Cheong, C.K. | Nam, T.C. (Seoul National Univ., Suwon (Korea R.). Coll. of Agriculture, Dept. of Veterinary Medicine) | Shin, T.W. (Seoul Milk Corp., Anyang (Korea R.))
An investigation on various causes of milking disturbances resulting from injuries and abnormalities of mammary system were made on 2,179 Holstein cows. To perform this investigation, 69 dairy farms of the suburban area of Seoul city, Gyeonggi-do and Chungnam provinces were randomly selected and subjected. Diagnosis was made by means of inspection and palpation of teat, insertion of teat canula, checking milk machines, anamneses and farm records. Dry off quarters were found in 158 quarters which turned out to be 1.8% of 8,716 quarters inspected. Among them 53.59% had one, 43.72% had two, 2.47% had three, and 0.22% had four supernumerary teats, respectively. Teat sphincter stenosis was 1.76% of 8.716 teats, loose sphincter was 0.89% of 8.716 teats and injured teat tip caused by over milking of milk machine was 2.63% of 8.716 teats.
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