An experiment was carried out in order to investigate the migration of
nematodes in Danish herrings. The fish were allocated to eight
different treatment groups corresponding to different combinations of
storage time and storage conditions until filleting. After filleting,
it was determined whether nematodes were present in the fillet or not.
Usage
data(herring)
Arguments
source
A. Roepstorff and H. Karl and B. Bloemsma and H. H. Huss (1993).
Catch handling and the possible migration of Anisakis larvae in
herring, Clupea harengus. Journal of Food Protection. 56:783-787.
Details
The variable group is the combination of storage condition and
storage time. Notice that a storage time 0 is equivalent to storage
condition 0 and that no fish were stored 132 hours under condition
4. Hence, there are only 8 combinations; i.e., 8 levels of the group
variable.