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Table 2 Pedigree data available for managed local populations (Group 1)

From: Managing genetic diversity in breeding programs of small populations: the case of French local chicken breeds

Breed

Number of male founders

Number of female founders

First year with pedigree

Number of generations in 2013

Number of sires in 2013

Number of dams in 2013

Mean inbreeding coefficient in 2013 (%)

Pedigree-based Ne in 2013 (Ne_demo)

Initial founder-based Ne (Ne_found)

Inbreeding rate per generation in % (Delta_F)

Poule d’Alsace (ALS)

20

33

2008

5

27

74

2.3

65

49.8

0.46

Barbezieux (BAR)

7

7

2002

11

52

116

7.0

27

14

0.66

Bourbonnaise (BOU)

75

232

2005

8

40

100

2.4

114

226.7

0.30

Bresse Gauloise Blanche B22

26

102

2000

13

99

215

5.3

108

82.9

0.42

Bresse Gauloise Blanche B11

23

256

1989

24

105

346

7.1

122

84.4

0.31

Bresse Gauloise Blanche B55

23

255

1989

24

104

376

nd

153

84.4

NA

Charollaise (CHA)

34

103

2005

8

20

43

2.7

63

102.3

0.34

Cou nu du Forez (CNF)

34

98

2007

6

20

50

3.5

53

101

0.59

Gasconne (GAS)

5

5

2009

4

24

77

7.2

22

10

1.85

Gâtinaise (GAT)

11

12

2006

7

40

112

5.6

56

23

0.82

Gauloise Grise (GG)

77

252

1998

15

65

184

NA

285

235.9

NA

Gauloise Noire (GN)

108

275

1996

17

20

83

5.3

119

310.2

0.32

Géline de Touraine (GDT)

43

103

1996

17

55

110

4.2

142

121.3

0.25

Gournay (GOU)

24

61

2003

10

46

104

nd

98

68.9

0.46

Grise du Vercors (GDV)

29

83

2007

16

24

53

2.7

65

86

0.27

Houdan (HOU)

30

81

2004

9

24

58

NA

80

87.6

NA

Merlerault (MER)

18

32

2006

7

14

34

5.6

44

46.1

0.82

Noire du Berry (NDB)

27

47

2008

5

47

103

2.7

99

68.6

0.55

  1. The pedigree population size (Ne_demo) was calculated according to [19] and the mean inbreeding rate was obtained by dividing the mean inbreeding coefficient by the number of generations since the start of the management program. Marans MAG population data were not available since it was managed by a commercial breeder. NA stands for non-available data