G
G.H. Coulter
Researcher at Agriculture and Agri-Food Canada
Publications - 18
Citations - 790
G.H. Coulter is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Semen quality & Scrotum. The author has an hindex of 13, co-authored 18 publications receiving 740 citations.
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Journal ArticleDOI
Insulating the scrotal neck affects semen quality and scrotal/testicular temperatures in the bull
TL;DR: It appears that compensatory thermoregulatory mechanisms restored SST but were not able to restore SQT and ITT, and the importance of theScrotal neck in scrotal/testicular thermoreGulation is emphasized.
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Effects of dietary energy on scrotal surface temperature, seminal quality, and sperm production in young beef bulls.
TL;DR: Increased dietary energy may affect scrotal or testicular thermoregulation by reducing the amount of heat that can be radiated from the scrotale neck, thereby increasing the temperature of the testes and scrotum.
Journal Article
Relationships among scrotal and testicular characteristics, sperm production, and seminal quality in 129 beef bulls.
TL;DR: In addition to seminal quality and scrotal circumference, testicular ultrasonographic echotexture has considerable promise for augmenting breeding soundness examinations of bulls.
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Relationship between scrotal infrared temperature patterns and natural-mating fertility in beef bulls
D D Lunstra,G.H. Coulter +1 more
TL;DR: Bulls with abnormal scrotal temperature patterns exhibited a reduced ability to maintain an effective thermal gradient from top to bottom of the testes and achieved reduced pregnancy rates when used for natural mating.
Journal ArticleDOI
Contribution of the scrotum, testes, and testicular artery to scrotal/testicular thermoregulation in bulls at two ambient temperatures
TL;DR: Results supported the hypothesis that blood within the testicular artery has a similar temperature at the top of the testis compared with the bottom, but subsequently cools before entering theTesticular parenchyma, and opposing temperature gradients that complement one another result in a relatively uniform intratesticular temperature.