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

Table 4 BRD-scoring parameters for calves

Clinical sign	Level	Score
Cough	None or induced cough	0
Cough	Spontaneous cough	2
Nasal discharge	None	0
Nasal discharge	Any	4
Ocular discharge	None	0
Ocular discharge	Any	2
Ear position	Normal, ear flick or head shake	0
Ear position	Ear droop or head tilt	5
Rectal temperature ( ̊C)	< 39.2	0
Rectal temperature ( ̊C)	≥ 39.2	2
Abnormal respiration^a	Absent	0
	Present	2

^aAuscultation was performed by using a stethoscope
Calves were categorized as BRD positive if their total score was ≥5 (modified Love et al. 2014)

ISSN: 1746-6148