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Comparison of twice‐ and once‐daily acidified boiling water cleaning of pipeline milking installations
Author(s) -
SINCLAIR G.,
PANES J.J.
Publication year - 1981
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/j.1471-0307.1981.tb02597.x
Subject(s) - milking , zoology , boiling , bleach , environmental science , effluent , automatic milking , chlorine , toxicology , pulp and paper industry , chemistry , environmental engineering , biology , engineering , pregnancy , genetics , organic chemistry , lactation , ice calving
Acidified boiling water (ABW) method, applied correctly on a twice‐ and once‐daily basis, were compared on 15 farms in England and Wales during the winter of 1975/76. Treatments were applied in alternate months on each farm for six months, and during the once‐daily treatment the second wash comprised a cold solution of sodium hypochlorite (250 mg/l available chlorine). Bacterio logical tests of both the milking equipment and the bulk milk showed no significant differences between the treatments. Continuous application of the once‐daily method during a further three‐month summer period on six farms showed mean bacterial colony counts to be higher in rinse samples but lower in milk samples compared with results previously obtained from the same farms for both treatments. The once‐daily ABW treatment as monitored on one farm reduced the electricity costs for water heating by 45 per cent, which represented a saving of £28 per annum per milking unit.