Description
lamb: Counts of two footshape classes on 2513 lambs.
Usage
lamb
To load the file into ASReml-R and view the contents use the commands:
library(asreml)
data(package="asreml")
data("lamb")
View(lamb)
Format
| A data frame with 12 columns and 68 rows: | |
| cyr | Cross year, an integer vector with values 1 and 2 |
| Grp | A factor with 5 levels |
| Sex | A factor with 2 levels |
| Sire | A factor with 18 levels |
| xxx | A numeric vector |
| tot | Binomial totals for each sex, sire, group combination |
| 14 | Incidence of footshape class 2 |
| 15 | Incidence of footshape class 1 |
| ls | Incidence of scald disease |
| lr | Incidence of rot disease |
| prop | Footshape class 2 (l5) as a proportion |
| fail | Footshape class 2 failure counts (1-l5) |
Details
The feet of 2513 lambs born in 1980 and 1981 from 5 mating groups were scored in two footshape classes: 1) all four feet are normal, and 2) one foot is deformed. Two indicator variables were also recorded for the presence of the disease conditions scald and rot. The data is grouped into 68 sex, sire and mating group combinations.
References
Gilmour AR, Anderson RD and Rae AL (1985). “The Analysis of Binomial Data by a Generalized Linear Mixed Model.” Biometrika, 72, pp. 593-599.