Guidelines For Unacceptable Values

Derived From BTM Analysis

CAUSATIVE AGENTS/SOURCES

ANALYSIS

Standard Plate Count

I. SPC>10,000 CFU/ML

(10-50% of SPC are psycrotrophs)

1. Errors in cooling milk

2. Errors in cleaning equipment

3. Rarely a cause of sub clinical mastitis(especially mastitis caused by Streptococcus spp.)

4. Unclean udders before milking

5. Poor teat and teat-end sanitation

Laboratory Pasteurization Count

II. LPC>200 CFU/ML

(May include species of Micrococcus, Microbacterium, Lactobacillus, Bacillus, Clostridium, and occasionally Streptococci)

1. Unclean Equipment

2. Improper sanitation practices

3. Milkstone deposits

Somatic Cell Count

III. SCC>500,000CFU/ML

1. Infected individuals in heard

Preliminary Incubation Count IV. PIC>10,000 CFU/ML

(Not associated w/mastitis pathogens)

(Gram-negative and Pseudomonas account for 50%)

 (Gram-positive mostly Enterococcus and Streptococcus)

1. Ineffective cow preparation (teat dip)

2. Poop milking hygiene

3. Unsanitary equipment