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Table 2 SchemeA1: effects over years after the beginning of selection

From: Predicting the impact of selection for scrapie resistance on PRNP genotype frequencies in goats

 

K-carrier frequency

Year

(1)

(2)

(3)

(4)

3

5

9

11

Saanen

 Overall average

 

0.50

 

0.98

4.3

9.9

11.7

0.51 (0.75)

 Average 1

 

0.51

 

0.99

4.3

9.6

11.4

0.53

 Average 2

 

0.51

 

0.98

4.0

9.3

11.5

0.51

 Average 3

 

0.52

 

0.99

4.0

9.0

11.3

0.53

Chamois Coloured

 Overall average

0.55

 

0.99

 

1.7

7.2

9.2

0.52 (0.76)

 Average 1

0.55

 

1

 

1.7

6.9

9.0

0.54

 Average 2

0.54

 

0.99

 

1.5

6.8

9.2

0.52

 Average 3

0.54

 

1

 

1.5

6.5

9.0

0.55

  1. The averages are computed on the different patterns of age structure of Additional file 1.
  2. Average 1 is the average excluding a female replacement rate of 0.15. Average 2 is the average excluding a male replacement rate of 0.50. Average 3 is the average excluding both a female replacement rate of 0.15 and a male replacement rate of 0.50.
  3. (1) Year the replacements are all K-carriers. (2) Year the replacement bucks are all KK. (3) Year the K-carrier frequency in progeny is > 0.99. (4) KK frequency in progeny at year (4) and frequency of K allele in parenthesis.
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Veterinary Research

ISSN: 1297-9716