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Table 1 Number of test-day records, number of cows and means and standard deviations (SD, in parentheses) for milk yield, fat and protein contents, fat and protein yields and somatic cell score by parity

From: Estimation of genotype by temperature-humidity index interactions on milk production and udder health traits in Montbeliarde cows

Lactation rank

Number of records

Number of cows

MY (kg/d)

FC (‰)

PC (‰)

FY (g/d)

PY (g/d)

SCS

Lactation 1

446,717

55,650

21.2 (5.1)

38.6 (5.2)

33.3 (3.0)

811 (202)

702 (171)

2.41 (1.68)

Lactation 2

457,516

58,229

24.4 (6.7)

38.8 (5.7)

33.6 (3.3)

938 (259)

813 (213)

2.23 (1.79)

  1. MY milk yield, FY fat yield, PY protein yield, FC fat content, PY protein content, SCS somatic cell score