Skip to main content

Table 1 Model estimates (with standard error in brackets) from the general linear (GLM) model estimates in 620 free-stalls and 192 tie-stalls using Proc GLM in SAS.

From: Housing system and herd size interactions in Norwegian dairy herds; associations with performance and disease incidence

 

Intercept

Tie-stall

Herd size

Interaction tie-stall herd size

Year of building

Herd size in 2nd power

Milk per cow-year (kg)

7472.1 (277.2)xxx

719.1 (218.9)xx

-45.48 (19.04)x

-21.38 (7.83)xx

 

0.855 (0.299)xx

FS status (FS-index)

95.201 (7.724)xxx

-21.278 (1.894)xxx

-1.159 (0.536)x

  

0.018 (0.009)x

Calving interval (days)

782.22 (137.43)xxx

11.541 (1.72)xxx

0.913 (0.429)x

 

-0.214 (0.069)xx

-0.014 (0.007)x

BMSCC (1000/ml)

80.364 (12.740)xxx

3.779 (3.144)ns

2.429 (0.882)xx

  

-0.024 (0.014)0.06

  1. x = p < 0.05, xx = p < 0.01, xxx = 0.001
  2. (Effect of free-stall = 0 in the models).