Table 2.
Proportion of dogs with [Cu]H exceeding 300 μg/g, 400 μg/g, and 1000 μg/g
| 1982–1988 | 1989–1996 | 1997–2007 | 2009‐2015a | ||
|---|---|---|---|---|---|
| NPB | >300 μg/g | 27.5% (25/91)** | N/A | N/A | 49.1% (52/106)** |
| >400 μg/g | 19.8% (18/91) | N/A | N/A | 30.2% (32/106) | |
| >1,000 μg/g | 4.4% (4/91) | N/A | N/A | 5.7% (6/106) | |
| PB | >300 μg/g | 48.2% (41/85)** | N/A | N/A | 71.4% (75/105)** |
| >400 μg/g | 38.8% (33/85)** | N/A | N/A | 61.0% (64/105)** | |
| >1,000 μg/g | 10.6% (9/85)*** | N/A | N/A | 31.4% (33/105)*** | |
| LR | >300 μg/g | 34.6% (9/26) | 36.7% (11/30)*** | 73.5% (75/102)*** | 71.0% (71/100) |
| >400 μg/g | 23.1% (6/26) | 29.4% (10/30)* | 56.9% (58/102)* | 60.0% (60/100) | |
| >1,000 μg/g | 0% (0/26) | 3.3% (1/30)* | 19.6% (20/102)* | 30.0% (30/100) |
The percentage of dogs with hepatic copper concentrations >300 μg/g, > 400 μg/g, and > 1000 μg/g for the various breed groupings are presented. The actual number of dogs are in parentheses. LR, Labrador Retrievers; N/A, not available; NPB, non‐predisposed breeds; PB, predisposed breeds.
a
For Labrador Retrievers only, this grouping consisted of the years 2008–2015, not 2009–2015, to allow a more even distribution of cases in the latter 2 periods.
Statistical comparisons were made within each row of data using Fisher exact testing.
*
P < .05
**
P < .01
***
P < .001