The use of the DHI-SCC program to select cows for bacteriological milk culture and subsequent treatment, early dry-off or culling

A 6-month trial was carried out on the comparative effects of lactation therapy (systemic and intramammary), early drying off followed by dry-cow therapy, and culling based on milk somatic cell count (SCC), on mastitis incidence in a 124-cow herd. In the 6 months prior to the trial, between 14.6 and 18.5% of cows had milk SCC of >250 000/ml, and incidence of clinical mastitis in any month ranged from 0 to 7.52%. During the trial, 15 of 20 cows on lactation therapy and 10 of 12 cows on early drying off and dry-cow therapy had decreased SCC, and there were 3 and 1 new infections, resp., on the 2 treatment systems. The most common isolates from cows with milk SCC >250 000/ml were coagulase-negative staphylococci (5.3%). The most cost-effective mastitis control method is a combined teat-dipping and dry-cow therapy programme..RE: 4 ref.; SC: ZA; CA; VE; BE; 0DSource type: Electronic(1) http://upei-resolver.asin-risa.ca?sid=SP:CABI&id=pmid:&id=&issn=&isbn=&volume=2&issue=7&spage=289&pages=289-292&date=1982&title=Dairy%20and%20Food%20Sanitation&atitle=The%20use%20of%20the%20DHI-SCC%20program%20to%20select%20cows%20for%20bacteriological%20milk%20culture%20and%20subsequent%20treatment%2c%20early%20dry-off%20or%20culling.&aulast=Bashandy&pid=%3Cauthor%3EBashandy%2c%20E%20Y%3bHeider%2c%20L%20E%3C%2Fauthor%3E%3CAN%3E19820482362%3C%2FAN%3E%3CDT%3EJournal%20article%3C%2FDT%3