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Age and heat tolerance in sheep

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Abstract

The influence of age on heat tolerance in sheep was investigated in two hotroom studies. The rectal temperature and respiratory rate response of 16-month old Dorset Horn x Merino and of 18-month old Merino ewes did not differ significantly from that of their respective mature (4.5 to 6 year old) counterparts.

Zusammenfassung

Der Einfluss des Alters auf die Wärmetoleranz von Schafen wurde in zwei Heissluftkammern untersucht. Die Rektaltemperatur und die Wirkung auf das Atemvolumen bei 16 Monate alten Dorset Horn x Merino — und bei 18 Monate alten Merino — Mutterschafen unterschieden sich nicht signifikant von denen der älteren(4,5 bis 6-jährigen) Vergleichstiere.

Resume

On a examiné dans deux chambres chaudes l'influence de l'âge sur la tolérance des moutons à la chaleur. La température rectale et les répercussions du chaud sur le volume respiré n'a pas présenté de différences significatives entre des brebis Dorset Horn x Mérinos de 16 mois et Mérinos de 18 mois d'une part, et les bêtes de contrôle plus âgées (4,5 à 6 ans) d'autre part.

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Authors and Affiliations

  1. John Hammond Climate Laboratory, Department of Livestock Husbandry, University of New England, Armidale, N.S.W., Australia

    C. J. Thwaites

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  1. C. J. Thwaites
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Thwaites, C.J. Age and heat tolerance in sheep. Int J Biometeorol 11, 209–212 (1967). https://doi.org/10.1007/BF01426849

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  • DOI: https://doi.org/10.1007/BF01426849

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