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Variation in rectal temperature of cattle in a tropical environment and its relation to growth rate

Published online by Cambridge University Press:  02 September 2010

H. G. Turner
Affiliation:
CSIRO, Division of Tropical Animal Science, Tropical Cattle Research Centre, PO Box 5545, North Rockhampton, Queensland 4701, Australia
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Abstract

Rectal temperatures of cattle grazed near the tropic of Capricorn in central Queensland were studied. The cattle were of Bos indicus, B. taurus and crossbred lines, and were represented by over 200 growing heifers in each of 2 years and some supplementary groups.

Rectal temperatures were loge normally distributed when they were expressed as deviations from a basal temperature of 38°C. They were significantly repeatable, but were more highly repeatable when herd mean temperature was above 39·5°C. The heritability estimate was 0·33 (P < 0·01).

The mean phenotypic regression of growth rate on rectal temperature, within breed groups, was 0·04 (s.e. 0·006) kg/day per °C (r = 0·3, P < 0·01) over the entire growth period from birth to 18 months of age but greater during warmer seasons. The estimated genetic correlation was insignificant in one group of heifers but −0·86 (s.e. 0·17) in the other.

The evidence of favourable and possible unfavourable responses to selection of cattle for low rectal temperature in warm environments is discussed.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1984

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References

REFERENCES

Bogyo, T. P. and Becker, W. A. 1963. Exact confidence intervals for genetic heritability estimated from paternal half-sib correlations. Biometrics 19: 494496.CrossRefGoogle Scholar
Bond, J. and McDowell, R. E. 1972. Reproductive performance and physiological responses of beef females as affected by a prolonged high environmental temperature. J. Anim. Set. 35: 820829!.CrossRefGoogle ScholarPubMed
Cartwright, T. C. 1955. Responses of beef cattle to high ambient temperatures. J. Anim. Sci. 14: 350362.CrossRefGoogle Scholar
Chan, I. I. 1974. [Heat resistance and selection of dairy cattle in Tajikistan.] Izv. Akad. Nauk Tadzh. SSR, Old. Biol. Nauk 3(56): 8992.Google Scholar
Da silva, R. G. 1973. Improving tropical beef cattle by simultaneous selection for weight and heat tolerance.Heritabilities and correlations of the traits. J. Anim. Sci. 37: 637642.CrossRefGoogle Scholar
Frisch, J. E. 1981. Changes occurring in cattle as a consequence of selection for growth rate in a stressful environment. J. agric. Sci., Camb. 96: 2338.CrossRefGoogle Scholar
Frisch, J. E. and Vercoe, J. E. 1977. Food intake, eating rate, weight gains, metabolic rate and efficiency of feed utilization in Bos taurus and Bos indicus crossbred cattle. Anim. Prod. 25: 343358.Google Scholar
Garcia, L. and Rodriguez, S. 1976. [Genetic aspects of tolerance to humid heat in Holstein females. II. Genetic parameters.] Mems Asoc. hat.-am. Prod. Anim. 11: 45 (Abstr.).Google Scholar
Health Sciences Computing Facility. 1977. BMDP Biomedical Computer Programs, P-series. University of California Press, Berkeley, Ca.Google Scholar
Hutchinson, J. C. D. 1977. Heat transfer of cattle in warm natural environments: its significance in animal production. Proc. 2nd Aust. Conf. Heat and Mass Transfer, Univ. Sydney, pp. 181188.Google Scholar
Ingraham, R. H., Stanley, R. W. and Wagner, W. C. 1979. Seasonal effects of tropical climate on shaded and non-shaded cows as measured by rectal temperature, adrenal cortex hormones, thyroid hormone and milk production. Am. J. vet. Res. 40: 17921797.Google Scholar
Johnson, K. G. 1971. Body temperature lability in sheep and goats during short-term exposures to heat and cold. J. agric. Sci., Camb. 77: 267272.CrossRefGoogle Scholar
Johnson, H. D. and Ragsdale, A. C. 1959. Environmental physiology and shelter engineering with special reference to domestic animals. LII. Effects of constant environmental temperatures of 50° and 80°F on the growth responses of Holstein, Brown Swiss, and Jersey calves. Res. Bull. Mo. agric. Exp. Stn, No. 705.Google Scholar
McDowell, R. E. 1972. Improvement of Livestock Production in Warm Climates. Freeman, San Francisco.Google Scholar
Mendel, V. E., Morrison, S. R., Bond, T. E. and Lofgreen, G. P. 1971. Duration of heat exposure and performance of beef cattle. J. Anim. Sci. 33: 850854.CrossRefGoogle Scholar
O'kelly, J. C. and Spiers, W. G. 1984. Observations on body temperature of the host and resistance to the tick, Boophilus microplus. J. med. Entomol. In press.Google Scholar
Preston, T. R. and Willis, M. B. 1974. Intensive Beef Production. 2nd ed.Pergamon Press, Oxford.Google Scholar
Ragsdale, A. C., Cheng, C. S. and Johnson, H. D. 1957. Environmental physiology and shelter engineering with special reference to domestic animals. XLII. Effects of constant environmental temperatures of 50°F and 80°F on the growth responses of Brahman, Santa Gertrudis, and Shorthorn calves. Res. Bull. Mo. agric. Exp. Stn, No. 642.Google Scholar
Roman-ponce, H., Thatcher, W. W., Buffington, D. E., Wilcox, C. J. and Van horn, H. H. 1977. Physiological and production responses of dairy cattle t o a shade structure in a subtropical environment. J. Dairy Sci. 60: 424430.CrossRefGoogle Scholar
Schmidt-nielsen, K. 1964. Desert Animals: Physiological Problems of Heat and Water. Clarendon Press, Oxford.Google Scholar
Seath, D. M. 1947. Heritability of heat tolerance in dairy cattle. J. Dairy Sci. 30: 137144.CrossRefGoogle Scholar
Seebeck, R. M. 1984. Reference manual for SYSNOVA: suite of programs for analysis of variance and covariance. Tech. Pap. Anim. Res. Lab. C.S.I.R.O., Aust., No. 7. In press.Google Scholar
Turner, H. G. 1962. Effect of clipping the coat on performance of calves in the field. Aust. J. agric. Res. 13: 180192.CrossRefGoogle Scholar
Turner, H. G. 1982. Genetic variation of rectal temperature in cows and its relationship to fertility. Anim. Prod. 35: 401412.Google Scholar
Vercoe, J. E. 1969. The effect of increased rectal temperature on nitrogen metabolism in Brahman cross and Shorthorn × Hereford steers fed on lucerne chaff. Aust. J. agric. Res. 20: 607612.CrossRefGoogle Scholar
Vernon, E. H., Damon, R. A., Harvey, W. R. Jr, Warwick, E. J. and Kincaid, C. M. 1959. Relation of heat tolerance determinations to productivity in beef cattle. J. Anim. Sci. 18: 9194.CrossRefGoogle Scholar