Use and misuse of multiple comparisons in animal experiments
Article Abstract:
Meaningful relationships among treatments and associated responses may be detected by using the appropriate type of comparisons of means. Pairwise multiple comparisons may be used for unstructured, qualitative treatments. Planned orthogonal contrasts examine whether there are no interactions while monoorthogonal contrasts detect interactions between factorial sets of treatments. Orthogonal polynomials, on the other hand, may assess responses over a whole range of treatments. Thus, scientific research may be refined with the proper statistical analyses.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Effect of consuming fungus-infected and fungus-free tall fescue and ergotamine tartrate on selected physiological variables of cattle in environmentally controlled conditions
Article Abstract:
The physiologic responses of steers fed fungus-infected tall fescue and those fed fungus-free tall fescue plus ergotamine tartrate were found to be similar under all the environmental conditions tested. This suggests that an ergopeptine alkaloid compound is partially responsible for the manifestations of fescue toxicosis. The study animals were also observed to have reduced food intake, which led to decreases in weight. Interactions between diet and environment suggest that high ambient temperature may exacerbate the signs of fescue toxicosis.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Voluntary intake and ingestive behavior of steers grazing Johnstone or endophyte-infected Kentucky-31 tall fescue
Article Abstract:
The effects of low-endophyte Johnstone (J) or high-endophyte Kentucky-31 tall fescue on the ingestive behavior and voluntary intake of 6 steers in 4 28-day periods was studied. It was observed that (J) steers spent more time grazing and lying down and took more prehensile bites than the (K) steers which suggested that endophyte-infected tall fescue altered grazing behavior and reduction of voluntary intake.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Seawater carbon measurement. Reburial of fossil organic carbon in marine sediments. Influence of oxygen exposure time on organic carbon preservation in continental margin sediments
- Abstracts: Marsupial Y chromosome encodes a homologue of the mouse Y-linked candidate spermatogenesis gene Ube1y. In the platypus a meiotic chain of ten sex chromosomes shares genes with the bird Z and mammal X chromosomes
- Abstracts: The prevalent distrust of science. Atom microscopy comes of age. Conflicts of interest declared
- Abstracts: Proteasome subunits encoded by the major histocompatibility complex are not essential for antigen processing
- Abstracts: Level of nutrition and visceral organ protein synthetic capacity and nucleicacid content in sheep. Effects of ruminally degradable and escape protein supplements on steers grazing summer native range