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Table 1 Descriptive statistics on the rams phenotyped for parasite resistance and the ewes phenotyped for milk production traits

From: Unfavorable genetic correlations between fecal egg count and milk production traits in the French blond-faced Manech dairy sheep breed

Variable

Number of animals

Mean

SD

Minimum

Maximum

Parasite resistance traits—Males in control station

 FEC_inf1_T0 (eggs/g)

951

0

0

0

0

 FEC_inf1 (eggs/g)

944

2567

1886

0

11,400

 FEC_inf2 (eggs/g)

912

2064

1983

0

14,900

 root_FEC_inf1

944

6.5

1.9

0

10.3

 root_FEC_inf2

912

5.9

2.1

0

11.0

Milk production traits—Milk recording data

 MY (L/year)

139,496

261

76

29

495

 FY (kg/year)

139,378

15.98

4.81

1.32

30.95

 PY (kg/year)

139,507

12.74

3.80

1.20

24.48

 FC (g/L)

139,226

61.61

8.29

35.78

87.71

 PC (g/L)

139,376

48.88

4.23

35.90

62.06

 LSCS

138,863

8.8

0.2

8.1

9.4

  1. SD: standard deviation; FEC_inf1_T0: fecal egg count at the day of the first infection; FEC_inf1: fecal egg count at the end of the first infection; FEC_inf2: fecal egg count at the end of the second infection; root_FEC_inf1 and root_FEC_inf2 are the fourth-root transformed values for FEC_inf1 and FEC_inf2 respectively; MY: milk yield; FY: fat yield; PY: protein yield; FC: fat content; PC: protein content; LSCS: lactation mean somatic cell score
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Genetics Selection Evolution

ISSN: 1297-9686