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Table 1 Descriptive statistics of the 497 calves at the time of arrival

From: Field trial to evaluate the effect of an intranasal respiratory vaccine protocol on bovine respiratory disease incidence and growth in a commercial calf rearing unit

 

Total ± SD (min.-max.)

Vaccinated ± SD (min.-max.)

Unvaccinated ± SD (min.-max.)

n

497

247

250

Number of compartments

14

7

7

Sex: Male/female

467/30

231/16

236/14

Mean age at arrival/days

17 ± 4.9 (10–45)

16.7 ± 5.2 (10–45)

17.2 ± 4.6 (10–34)

Mean weight at arrival/kg

56.6 ± 8.8 (40–92)

56.8 ± 9.2 (40–92)

56.5 ± 8.4 (40–92)

Mean serum IgG a

10.2 ± 5.8 (0.7–33.9)

10.5 ± 5.9 (0.7–33.9)

9.8 ± 5.6 (0.7–27.7)

Mean serum SAAa

123.4 ± 81.1 (9.2–609.6)

127.1 ± 81.4 (9.2–436.8)

119.6 ± 80.7 (9.4–609.6)

Clinical condition a b

2.7 ± 2.0 (0–10)

2.7 ± 2.1 (0–10)

2.8 ± 2.0 (0–10)

BRD diagnosis a b

155

79

76

Breeds (n):

 Ayrshire

191

87

104

 Holstein

180

89

91

 Finnish cattle

2

1

1

 Dairy beef crosses

124

70

54

  1. SD standard deviation, SAA Serum amyloid A, BRD Bovine respiratory disease,
  2. a = Observed/measured at the first clinical examination, b = See the text for detailed description