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rats – Reproductive study on rats

Description

rats records the litter weights of pups from rats given three doses (control, low and high) of an experimental compound affecting reproductive performance.

Usage

rats

To load the file into ASReml-R and view the contents use the commands:

library(asreml)
data(package="asreml")
data("rats")
View(rats)
Format
A data frame with 6 columns and 322 rows:
Dose A  factor with 3 levels
Sex A factor with 2 levels
littersize A covariate
Dam A factor with 27 levels
Pup A factor with 18 levels
weight Individual pup weights in grams
Details

Thirty female rats (dams) were randomly split into three groups of 10 and each group randomly assigned a dosing level. Three litters had to be dropped from the high dose level.

References

Dempster AP, Patel CM, Selwyn MR and Roth AJ (1984). “Statistical and Computational Aspects of Mixed Model Analysis.” Journal of the Royal Statist. Series C., 33(2), pp. 203-214.

Updated on June 22, 2021

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