title: Machine milking: experimental observations on the life of teat-cup liners.
abstract: The useful life of neoprene teat-cup liners used in milking machines was determined by physico-mechanical, optical and microbiological studies. The various tests showed that after more than 1,000 hrs' use, that is the milking time plus disinfection time, there were physico-mechanical and biological changes that could have an adverse effect on the health of the udder as a result of a loss of elasticity and a dissemination of mastitis-producing microorganisms (S. agalactiae, S. aureus) which settle in cracks in the surface of the rubber.
mesh_terms: D000818:Animals; D002417:Cattle; D003612:Dairying / Q000295:instrumentation*; D005260:Female; D006244:Hardness; D009387:Neoprene; D013211:Staphylococcus aureus / Q000302:isolation & purification; D013292:Streptococcus agalactiae / Q000302:isolation & purification; D013314:Stress, Mechanical
chemical_list: D009387:Neoprene