Barnard, Christopher J. and Behnke, Jerzy M. and Gage, Alexander R. and Brown, Hazel and Smithurst, Peter R. (1997) Modulation of behaviour and testosterone concentration in immunodepressed male

Barnard, Christopher J. and Behnke, Jerzy M. and Gage, Alexander R. and Brown, Hazel and Smithurst, Peter R. (1998) Maternal effects on the development of social rank and immunity trade-offs in male laboratory

Modulation of behaviour and testosterone concentration in immunodepressed male laboratory mice (Mus musculus).

Recent ideas suggest that current immunocompetence may act as a constraint on behavioural and physiological decisions, where these risk imposing an additional burden on immune function. We tested this in the context of time budgeting and the secretion of the potentially immunodepressive hormones testosterone and corticosterone, by treating adult male CFLP laboratory mice with antithymocyte seru...

Maternal effects on the development of social rank and immunity trade-offs in male laboratory mice (Mus musculus).

Social status in randomly constituted groups of male CFLP mice was predictable from early suckling behaviour and rate of weight gain in natal litters. High-ranking males were those that had suckled on more anterior teats and gained weight more quickly. Rank was not predicted by any measures of sibling interaction or hormone (testosterone, corticosterone) concentration. Aggressiveness in eventua...

Behnke, Jerzy M. and Barnard, Christopher J. and Wakelin, Derek (1992) Understanding chronic nematode infections: evolutionary considerations, current

Seasonal variation in seminal characteristics, testicular measurements and plasma testosterone concentration in Iranian Khalkhali bucks

The aim of the present study was to determine seasonal variations in semen characteristics, testicular size, and plasma testosterone concentration in Iranian Khalkhali goats. An artificial vagina was used to collect semen from 10 bucks (2–4 years of age), from November 2013 to October 2014. Testicular circumference was higher (P<0.05) from September to October. Ejaculate volume, sperm ...