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Table 2 Height and length of 85 nasolacrimal duct fistulae in 52 cattle 1 (median, range)

From: Congenital nasolacrimal duct fistula in Brown Swiss cattle

 

Height (mm)

Length (mm)

Animals

Left

Right

Left

Right

Pedigree cow J (n = 1)

2 n = 1

5 n = 1

Bull B (n = 1)2,3

1 n = 1

1 n = 1

1 n = 1

1 n = 1

Offspring of bull A (n = 26)

2 (1 – 5) n = 20

2 (1 – 10) n = 21

2 (1 – 10) n = 20

2 (1 – 12) n = 21

Offspring of bull B (n = 16)

1 (1 – 3) n = 13

1 (1 – 2) n = 11

1 (1 – 3) n = 13

1 (1 – 3) n = 11

Offspring of bull C (n = 2)

1 n = 1

2 n = 1

1 n = 1

2 n = 1

Other direct and indirect offspring of dam J (n = 6)

2 (1 – 8) n = 6

2 (1 – 7) n = 4

2 (1 – 4) n = 6

2 (1 – 5) n = 4

Total (n = 52)

1 (1 – 8) n = 42

1 (1 – 10) n = 38

2 (1 – 10) n = 42

2 (1 – 12) n = 38

  1. 1Four fistulae of two daughters of bull A could not be measured for technical reasons.
  2. 2Bull A had bilateral fistula but is not listed here because he was described elsewhere (Braun et al. [9]).
  3. 3Bull C was no longer alive at the time of this study.