Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.477447
Title: An examination of the effect of climatic housing and nutrition on the performance of calves
Author: Williams, Peter Edmond Vaughan
ISNI:       0000 0001 3569 3263
Awarding Body: University of Glasgow
Current Institution: University of Glasgow
Date of Award: 1977
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Abstract:
Research was undertaken to examine the feasibility of rearing bought-in calves in climatic calf houses in the West of Scotland. An examination was also undertaken of the individual effects and the interactions between different levels of nutrition and the degree of protection afforded by climatic calf housing on the performance of Friesian type calves from approximately 6 to 160 days of age. Satisfactory levels of performance and daily live-weight gains on a par with those achieved by calves of similar type reared under similar management conditions in other areas of Great Britain were achieved by the climatically housed calves. Overall calf lesses represented 12% of the total purchased. When certain of the experimental trial conditions, which would be unacceptable in practice, were taken into account calf mortality was 7.9% which whilst not ideal was close to the mean level of 5.8% achieved by specialist bought-in calf rearers. Climatic calf housing was thus considered feasible for rearing young bought-in calves in the West of Scotland area. Differing designs of calf housing incorporating varying degrees of insulation raised the mean internal house temperature above ambient by a maximum of 3°C. Insulation raised the mean internal temperature and reduced the internal range of temperature compared with the external mean and temperature range. The internal temperature ranges of the two non-insulated houses as a percentage of the external range were 94 and 87 per cent compared with 73 and 40 per cent in the insulated houses. Air movement within the houses was directly related to the degree of enclosure of the house and the external wind speed. Only in the completely enclosed house and during one intake woere levels of relative humidity recorded which were considered detrimental to calf health. The instantataneous environmental conditions within the four houses were almoet totally dependent on the external environmental conditions at that instant. In no single house did calves consistently perform better, were healthier or was mortality lower between arrival and weaning or arrival and sale. Completely enclosing the house was detrimental to calf health. There was a suggestion that better calf health, lower mortality and better performance oould he obtained by a degree of insulation in an open fronted building.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.477447  DOI: Not available
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