Dried potato products for egg production: statistical analysis of a laying experiment
- 1 July 1945
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 35 (3), 158-162
- https://doi.org/10.1017/s0021859600049169
Abstract
An experiment involving twelve pens of twenty-five pullets demonstrated that two types of dried potatoes compared favourably with cereals, as regards their effects on egg production, when up to 42½% of each product was included in the mash.The records of the experiment, as regards (a) the number of eggs laid in 12 months, (b) the mean weight of eggs during the year, and (c) the change in live weight during the year, were studied by analysis of variance, using the approximate method of Yates (1933) for obtaining standard errors of pen means from the variance within pens. Similar analyses of the number of eggs laid in the month were carried out for each month separately. The latter analyses indicated the months in which increased production was obtained from the superior rations, and showed that duplicate pens had reacted similarly to the experimental feeding. The results of the statistical analyses are set out in some detail as an example of method.This publication has 4 references indexed in Scilit:
- Dried Potato Products and Nutritional Encephalomalacia in ChicksNature, 1944
- Breeding a Low Producing Strain of Single Comb White LeghornsPoultry Science, 1934
- The principles of orthogonality and confounding in replicated experiments. (With Seven Text-figures.)The Journal of Agricultural Science, 1933
- On the validity of Fisher'sztest when applied to an actual example of non-normal data. (With five text-figures.)The Journal of Agricultural Science, 1933