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Warm season heat transfer model for dairy cattle in naturally ventilated facilities.

Author(s) : STOWELL R. R., BICKERT W. G.

Summary

A model is presented that calculates the static, steady-state thermal energy state of a row of dairy cows located within a naturally ventilated building prior to any allowance for any decline in feed intake or milk production. Model results were compared to data from studies on dairy cattle under similar parameters. Modelled hair and skin surface temperatures compared closely to those measured from cows in a controlled environment, corresponding to within 0.5 deg C for conditions where air speeds in the animal zone were about 2 meters per second. Heat transfer rates were also comparable given that declines in feed intake and heat production occurred in the controlled study, but are not accounted for in the model.

Details

  • Original title: Warm season heat transfer model for dairy cattle in naturally ventilated facilities.
  • Record ID : 1997-1781
  • Languages: English
  • Publication date: 1996/07/17
  • Source: Source: ASAE, Annu. int. Meet., Phoenix
    pap. 964061; 24 p.; 13 fig.; 29 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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