R: Growth curves of pigs in a 3x3 factorial experiment

dietox {doBy} | R Documentation

## Growth curves of pigs in a 3x3 factorial experiment

### Description

The `dietox` data frame has 861 rows and 7 columns.

### Usage

    dietox

### Format

This data frame contains the following columns:

Weight

  Weight in Kg

Feed

  Cumulated feed intake in Kg

Time

  Time (in weeks) in the experiment

Pig

  Factor; id of each pig

Evit

  Factor; vitamin E dose; see 'details'.

Cu

  Factor, copper dose; see 'details'

Start

  Start weight in experiment, i.e. weight at week 1.

Litter

  Factor, id of litter of each pig

### Details

Data contains weight of slaughter pigs measured weekly for 12 weeks. Data also contains the startweight (i.e. the weight at week 1). The treatments are 3 different levels of Evit = vitamin E (dose: 0, 100, 200 mg dl-alpha-tocopheryl acetat /kg feed) in combination with 3 different levels of Cu=copper (dose: 0, 35, 175 mg/kg feed) in the feed. The cumulated feed intake is also recorded. The pigs are littermates.

### Source

Lauridsen, C., Højsgaard, S.,Sørensen, M.T. C. (1999) Influence of Dietary Rapeseed Oli, Vitamin E, and Copper on Performance and Antioxidant and Oxidative Status of Pigs. J. Anim. Sci.77:906-916

### Examples

    data(dietox)
    head(dietox)
    if (require(ggplot2)){
      qplot(Time, Weight, data=dietox, col=Pig) + geom_line() +
               theme(legend.position = "none") + facet_grid(Evit~Cu)
    } else {
      coplot(Weight ~ Time | Evit * Cu, data=dietox)
    }

[Package doBy version 4.6.5 Index]