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Physiological attributes as possible selection criteria for milk production 2. Plasma insulin, tri-iodothyronine and thyroxine in bulls

Published online by Cambridge University Press:  02 September 2010

T. J. Osmond ,
W. R. Carr ,
C. J. M. Hinks ,
R. B. Land  and
W. G. Hill
T. J. Osmond
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
W. R. Carr
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
C. J. M. Hinks
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
R. B. Land
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
W. G. Hill
Affiliation:
Institute of Animal Genetics, West Mains Road, Edinburgh EH9 3JN
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Abstract

Insulin, thyroxine and tri-iodothyronine concentrations were measured in samples of blood from 175 Friesian bulls, aged between 2 and 7 years, which were being progeny-tested for milk production. Least squares regression coefficients were estimated for these hormone levels on time of day and time after feed at sampling and age of bull. Correlations between hormone levels and Improved Contemporary Comparisons of the bull, a measure of his daughters' milk production, did not differ significantly from zero, suggesting that simple spot estimates of levels of these hormones in bulls would not supply useful predictors of daughters' production.

Type
Research Article
Information
Animal Production , Volume 32 , Issue 2 , April 1981 , pp. 159 - 163
Copyright
Copyright © British Society of Animal Science 1981

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References

REFERENCES

Hart, I. C., Bines, J. A., Balch, C. C. and Cowie, A. T. 1975. Hormone and metabolite differences between lactating beef and dairy cattle. Life Sci. 16: 1285–1292.CrossRefGoogle ScholarPubMed
Joakimsen, Ø. 1975. Estimates of thyroid activity as predictors of breeding value for milk production in cattle. Proc. 26th A. Meet. Eur. Ass. Anim. Prod., Warsaw.Google Scholar
Joakimsen, O., Steenberg, K., Lien, H. and Theodorsen, L. 1971. Genetic relationship between thyroxine degradation and fat-corrected milk yield in cattle. Ada Agric. scand. 21: 121–124.CrossRefGoogle Scholar
Quaas, R. L., Everett, R. W. and McClintock, A. C. 1979. Maternal grandsire model for dairy sire evaluation. J. Dairy Sci. 62: 1648–1654.CrossRefGoogle Scholar
Rodbard, D. and Lewald, J. E. 1970. Computer analysis of radioligand assay and radioimmunoassay data. Ada. Endocrin. 64: Suppl. 147, pp. 79–103.Google Scholar
Seth, J., Rutherford, F. J. and McKenzie, I. 1975. Solid-phase radioimmunoassay of thyroxine in untreated serum. Clin. Chem. 21: 1406–1413.CrossRefGoogle ScholarPubMed
Seth, J., Toft, A. D. and Irvine, W. J. 1976. Simple solid phase radioimmunoassays for total triiodothyronine and thyroxine in serum and their clinical evaluation. Clinica chim. Ada 68: 291–301.CrossRefGoogle ScholarPubMed
Stark, A. J., Rowlands, G. J., Manston, R. and McClintock, A. E. 1978. The blood composition of Friesian bulls; variations with age and relationships with results of progeny tests. J. agric. Sci., Camb. 91: 579–585.CrossRefGoogle Scholar
Taylor, St C. S., Monteiro, L. S., Murray, J. and Osmond, T. J. 1978. Possible association between the breeding value of dairy bulls and milk yield of their mates. Anim. Prod. 27: 303–314.Google Scholar
Tilakaratne, N. 1979. Studies on potential physiological criteria for genetic selection for milk production. Ph.D. Thesis, Univ. Edinburgh.Google Scholar
Tilakaratne, N., Alliston, J. C., Carr, W. R., Land, R. B. and Osmond, T. J. 1980. Physiological attributes as possible selection criteria for milk production. 1. Study of metabolites in Friesian calves of high or low genetic merit. Anim. Prod. 30: 327–340.Google Scholar
Tucker, H. A., Koprowski, J. A., Britt, J. H. and Oxender, W. D. 1974. Serum prolactin and growth hormone in Holstein bulls. J. Dairy Sci. 57: 1092–1094.CrossRefGoogle ScholarPubMed