We examined if the degree of CFL varies with age, sex and social isolation in a Leghorn layer strain and junglefowl and if there were any breed differences in these effects...
In trial 2, FEC recorded in lambs from six farms confirmed the breed differences previously observed.
Another benefit of the multibreed model is that breed differences are routinely estimated and updated.
However, important breed differences in the use of the test device emerged.
"All these breed differences reflect an experiment on artificial selection," says Careau.
The answer is clearly 'yes,' " Serpell says, although he notes that there are breed differences.
Holsteins had a higher milk fat content of CLA and CLA-desaturase index, but breed differences were minor.
Estimates of breed differences, inbreeding depression, and heterosis were similar to previous estimates; new estimates were obtained for conception rates.
The aim of the current study was designed to explore possible breed differences in a basic behavioral phenotype in dogs.
The result obtained in this study is in line with the suggestion that breed differences exist in the rate of cutaneous cooling (Alexiev, Gudev, Popova, & Moneva, 2004).
Topics discussed include dominant subordinate relationships, social facilitation, animal density, oestrous synchronisation, nutritional status, age and physiological state, presence of the bull and breed differences.
