Behavioral and physiological effects of freeze or hot-iron branding on crossbred cattle
Article Abstract:
Twenty-seven crossbred calves were chosen for an experiment to determine the behavioral and physiological effects of freeze and hot-iron branding. They were classified to hot-iron branded(H), freeze-branded(F) and sham-branded(S). There was an elevation of heart rate, cortisol and epinephrine concentrations during branding and restraint. Behavioral changes during hot-iron branding were more marked in H than S or F calves. Hot-iron branding elicited epinephrine release indicating more pain therefore freeze-branding is recommended to reduce pain and eliminate scar damage to cattle hide.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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A comparative physiological and behavioral study of freeze and hot-iron branding using dairy cows
Article Abstract:
The physiological and behavioralreaction of 24 dairy cows assigned to either freeze and hot-iron branding were recorded and evaluated. Pain response was quantified with the following measures over a 25 minute sampling period: elevated heart rate, concentrations of cortisol, epinephrine, and norepinephrine and escape-avoidance reactions andvocalizations. Though both methods of branding caused increased heart rates andcortisol concentration, hot-iron branded cows exhibited a greater response. Plasma epinephrine and norepinephrine concentration changes were insignificant.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Effects of gossypol and cottonseed products on reproduction of mammals
Article Abstract:
Gossypol ingestion produces adverse effects in the reproductive processes of many animal species. Possible mechanisms in female nonruminants include endocrine derangements and direct cytotoxic effects. Male nonruminants are found to have decreased sperm motility and lower sperm counts. Male ruminants sustain damage to the integrity of the sperm cell membrane. Although in vitro studies indicate interference with embryo development and progesterone production in female ruminants, these have been unsubstantiated by in vivo studies.
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:
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