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Table 5 Mean teat hyperkeratosis score (HK) for each herd (A, B), and for two pre-milking teat disinfection treatments (PTD: that received pre-milking teat disinfectant and NPTD: did not receive disinfectant) and at three sampling points during lactation

From: Effect of pre-milking teat disinfection on new mastitis infection rates of dairy cows

 

HK

s.e.

Significance p-value

Herd A

2.04

  

Herd B

1.64

0.04

< 0.001

PTD

1.83

  

NPTD

1.84

0.05

0.82

Day 1 (April)

1.73

  

Day 2 (July)

1.81

  

Day 3 (October)

1.98

0.03

< 0.001

  1. Not significant for treatment * time
  2. No of observations = 1602
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Irish Veterinary Journal

ISSN: 2046-0481