Variable | Variable description | Definition | Summary statisticsa (N = 3185) |
---|---|---|---|
Colostrum | Whether colostrum, including colostrum stored at freezer, was fed calf at the first suckling after birth at the original dairy farmb | Binomial (1: Yes ,0: No) | 2556 (80.3%) |
Parity | Dam parity of calf | Binomial (1:Multiparous , 0: Primiparous ) | 2292 (72.0%)d |
TP | Concentration of total protein in serum taken at introduction (g/dl) | Continuous | 6.00 (SD= 0.73) |
Introduction weight | Body weight at introduction (kg) | Continuous | 42.69 (SD= 5.32) |
Season | Introduction seasons divided into four terms | Multinomial (Autumn: September - November, Winter: December - February, Spring: March - May, Summer: June - August) | Autumn: 792 (24.9%), Winter: 809 (25.4%), Spring: 776 (24.4%), Summer: 808(25.4%) |
BRD | Whether the calf contracted BRD until weaning after introductionc | Binomial (1: Yes ,0: No) | 1409 (44.2%)e |
ADG | ADG of body weight from introduction to the nursery farm to weaning (kg/day) | Continuous | 0.94 (SD= 0.24) |