Stručni rad
Functional and technical condition and hygiene of teat cup clusters in minifarm dairies
Miroslav Benić
orcid.org/0000-0001-7594-520X
; Hrvatski veterinarski institut, Savska cesta 143, Zagreb
Mirko Katarinčić
Stjepan Topolko
Sažetak
Examination of functional and technical condition and hygiene of teat cup clusters in 18 minifarm cow dairies and 73 goat dairies. A total of 10 parameters were examined (DIN 11845) in 15 semistationary units, 54 mobile units with pulsator, and 22 mobile units without pulsator. Most units came from VITREX, WESTFALIA, ALFA-LAVAL, BELJE and NATIONAL. The examination showed 32 (35.2%) conforming and 59 (64.8%) nonconforming units. The most frequent failures were: a) mobile units without pulsator: - faulty milk cans and teat cups (72.7%), - faulty operating vacuum metre and operating vacuum (63.6%); b) mobile units with pulsator: - insufficient reserve airflow of vacuum pump (48.1%), - insufficient vacuum pump power (42.6%), - faulty operating vacuum metre (29.6%), - inadequate operating vacuum (31.5%);c) semistationary units: - faulty teat cup clusters and teat cups (31.5%), - inadequate operating vacuum (46.7%), - faulty pulsator (33.3%). Cleanness of the units was checked by means of microbiological examination of milk can swabs and checking of the number of bacteria in 1 ml of teat cups rinsings. Checking was performed on 19 milk can swabs and 19 teat cups rinsings. Hygienical condition of milk can surfaces, expressed as a number of microorganisms per square centimetre, was between <10/cm2 and 1.000.000/cm2, whereas hygienical criteria were met by 10 (53%) samples, while the remaining 9 (47%) failed to meet the criteria. The hygienical condition of teat cups, expressed as a number of microorganisms per 1 ml of teat cups rinsing, was between 170 and 2.600.000/ml, whereas hygienical standards were by only 2 samples (10.5%), while the remaining 17 samples (89.5%) to a greater or lesser extend deviated from the prescribed criteria.
Ključne riječi
nonconforming units; hygiene of teat cup clusters; udder health
Hrčak ID:
94909
URI
Datum izdavanja:
12.5.1997.
Posjeta: 1.517 *