Table 2.
Compliance to the breeding programme *.
| Birth cohorts in GSF sample | |||||
|---|---|---|---|---|---|
| 1999 - 2003 | 2004 | 2005 | 2006 | 2007 | |
| Farms | |||||
| Number (%) | 95/128 (74.2) | 54/110 (49.1) | 40/127 (31.5) | 21/121 (17.4) | 21/145 (14.5) |
| Animals | |||||
| Number (%) | 268/742 (36.1) | 115/437 (26.3) | 74/618 (12.0) | 36/628 (6.1) | 53/887 (6.0) |
* The use of ARR/ARR rams in the Dutch breeding programme in GSF sample, compulsory in 2004 (for farms > 10 ewes) and 2005 (all farms).
Presence of animals without ARR allele in different birth cohorts in the GSF sample, measured in the number of farms with at least one animal without ARR allel in the given birth cohort(s), and measured in the number of animals without ARR allele in the given birth cohort(s) across all farms sampled.