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The effects of ambient temperature, nature and temperature of the floor and radiant heat on the metabolic rate of the new—born pig

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Abstract

Using a closed circuit technique, the oxygen consumption of 108 piglets below one week of age have been measured while modifying the physical attributes of the thermal environment. Moving the piglets onto a wooden floor from concrete reduced the oxygen consumption rate from 37.8 ml to 34.5 ml/kg. min) at 10°C, and from 33.7 to 31.4 ml/(kg. min) on a rubber floor at the same temperature. Oxygen consumption was also significantly reduced when the piglets were placed on a straw floor, were supplied with radiant heat and when the floor temperature was raised independently of chamber temperature. It is concluded that the provision of supplementary heating either in the floor or by overhead radiation can greatly reduce the effects of a cold environment on the new-born pig and so enhance the animal's viability.

Zusammenfassung

Der Sauerstoff-Umsatz von 108 Ferkeln, die jünger als eine Woche waren, wurde unter wechselnden Bedingungen der thermischen Umwelt gemessen. Das Verlegen der Ferkel von einem Zement- auf einen Holzboden führte zur Senkung des 02-Umsatzes von 37,8 auf 34,5 ml O2/kg. min) und von 33,7 auf 31,4 ml O2/(kg. min) bei 10°C auf einem Gummiboden. Auf einem strohbedecktem Boden war der O2-Umsatz ebenfalls vermindert. Den gleichen Effekt hatte die Anwendung von Strahlungswärme oder die Erhöhung der Bodentemperatur. Danach kann zusätzliche Erwärmung vom Boden oder von der Decke die Kälteeinwirkung auf das Ferkel aus der Umgebung stark reduzieren und die Lebensfähigkeit der Tiere erhöhen.

Resume

Au moyen d'un appareil à circuit fermé, on a mesuré la consommation en oxygène le 108 porcelets âgés de moins d'une semaine soumis à divers régimes thermiques et cela dans une température ambiante constante. En transférant les porcelets d'un sol de béton à un plancher de bois, leur consommation d'oxygène a passé de 37,8 à 34,5 ml/(kg. min), et de 33,7 à 31,4 ml/(kg. min) en passant du béton à un sol recouvert de caoutchouc. La consommation d'oxygène a également été réduite de façon significative pour un sol recouvert de paille. Il en est allé de même pour des lampes à infra-rouge et si le sol était chauffé indépendamment du local. On en conclut qu'un chauffage supplémentaire soit dans le sol soit par rayonnement peut réduire sensiblement les effets néfastes d'une ambiance froide sur lesporcelets nouveau-nés et rehausser leurs chances de survie.

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Presented during the Fifth International Biometeorological Congress, 1–6 September 1969, Montreux, Switzerland.

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Stephens, D.B., Start, I.B. The effects of ambient temperature, nature and temperature of the floor and radiant heat on the metabolic rate of the new—born pig. Int J Biometeorol 14, 275–283 (1970). https://doi.org/10.1007/BF01742071

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  • DOI: https://doi.org/10.1007/BF01742071

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