Vorstudien über den Einfluß des Höhenklimas auf einige Eigenschaften und Bestandteile der Milch gealpter Kühe

Staffe, A.

doi:10.1111/j.1439-0388.1932.tb00890.x

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1975

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“…The literature contains numerous reports on responses of cattle to the natural conditions prevailing on high altitude pastures (Karg, 1959;Krippl et al, 1961;Staffe, 1932). There are also detailed descriptions of chronic mountain sickness of cattle ("brisket disease") (Alexander and Jensen, 1963;Blake, 1965;Grover etal., 1963;Hechtet al, 1962).…”

Section: Introductionmentioning

confidence: 95%

Responses of calves to a simulated altitude of 5000 m

Bianca¹,

Hays

1975

Int J Biometeorol

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ABSTRACT.-Six calves were exposed in succession 12 days at 400 m altitude (control), 12 days at a simulated altitude of 5000 m in a low pressure chamber (experimental), and 14 days at 400 m altitude (recovery). Exposure to 5000 m produced the following changes : intake of feed and water decreased by 47 and 35% respectively, and body weight gain ceased. Rectal temperature rose by 0.4oc. Heart rate increased by 65%. Respiratory rate and blood pH increased moderately. There was an S-shaped rise of haematocrit (from 33 to 45%), which was paralleled by blood viscosity. Plasma viscosity showed a sharp, but transient rise. Short term measurements made during ascent to and descent from 5000 m altitude, both lasting for four hours, showed that some of the changes developed rapidly.

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Section: Introductionmentioning

confidence: 95%