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Foetal development in red deer (cervus elaphus) 1. Growth of the foetus and associated tissues

Published online by Cambridge University Press:  02 September 2010

C. L. Adam ,
I. McDonald ,
C. E. Moir  and
K. Pennie
C. L. Adam
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
I. McDonald
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
C. E. Moir
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
K. Pennie
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

Eighteen pregnant red deer hinds were slaughtered at known stages of gestation between 72 and 224 days (term = 233 days). The udder was removed and the gravid uterus was separated into foetal, placental, empty uterus, amniotic fluid and allantoic fluid components. Equations were fitted to the weights of each component to describe the effects of stage of gestation. Hind weight at mating had no significant effect. For the foetal weight (Y, kg) the data were closely fitted by a version of the Gompertz equation,

loge Y = 3·016 — 14·267exp (–0·01138t) – 0·086s

where t is time in days from conception and s is the sex of the foetus (male = −1, female = 1). The weights of the placenta and empty uterus were similarly fitted by versions of the Gompertz equation and mammary tissue by an exponential relationship. However, the weight of (logc) amniotic fluid was bestdescribed by a third degree polynomial, and that of (loge) allantoic fluid by a linear equation.

Using the equations and their first differentials, respectively, estimates were made of mean weights and daily rates of gain at different stages of gestation. These indicated altogether relatively slow growth and low weight of the red deer conceptus. Udder development occurred typically late in pregnancy.

Type
Research Article
Information
Animal Production , Volume 46 , Issue 1 , February 1988 , pp. 131 - 138
Copyright
Copyright © British Society of Animal Science 1988

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References

REFERENCES

Adam., C. L. 1985. Recent developments for lovvground red deer farming. Rowett Research Institute Annual Report No. 40, pp. 34–50.Google Scholar
Adam, C. L. 1986. Nutritional requirements. In Management and Diseases of Deer (ed. Alexander, T. L.), pp. 181–187. Veterinary Deer Society, London.Google Scholar
Adam., C. L. and Moir, C. E. 1987. A note on the effect of birth date on the performance of suckled red deer calves and their dams on low-ground pasture. Animal Production 44: 330–332.Google Scholar
Adam., C. L., Moir, C. E. and Atkinson, T. 1985. Plasma concentrations of progesterone in female red deer (Cervus elaphus) during the breeding season, pregnancy and anoestrus. Journal of Reproduction and Fertility 74: 631–636.CrossRefGoogle Scholar
Adam., C. L., Moir., C. E. and Atkinson, T. 1986. Induction of early breeding in red deer (Cervus elaphus) by melatonin. Journal of Reproduction and Fertility 76:569–573.CrossRefGoogle Scholar
Arman, P., Kay, R. N. B., Goodall, E. D. and Sharman, G. A. M. 1974. The composition and yield of milk from captive red deer (Cervus elaphus L.). Journal of Reproduction and Fertility 37: 67–84.CrossRefGoogle ScholarPubMed
Blaxter, K. L. and Hamilton, W. J. 1980. Reproduction in farmed red deer. 2. Calf growth and mortality. Journal of Agricultural Science, Cambridge 95: 275–284.CrossRefGoogle Scholar
Blaxter, K. L., Kay, R. N. B., Sharman, G. A. M., Cunningham, J. M. M. and Hamilton, W. J. 1974. Farming the Red Deer. Her Majesty's Stationery Office, Edinburgh.Google Scholar
Kendall, M. G. and Stuart, A. 1961. The Advanced Theory of Statistics, Vol. 2, p. 68. Charles Griffin, London.Google Scholar
Laird, A. K. 1966. Dynamics of embryonic growth. Growth 30: 263–275.Google ScholarPubMed
Laird, A. K., Tylhr, S. A. and Barton, A. D. 1965. Dynamics of normal growth. Growth 29: 233–248.Google ScholarPubMed
Robbins, C. T. and Robbins, B. L. 1979. Fetal and neonatal growth patterns and maternal reproductive effort in ungulates and subungulates. American Naturalist 114: 101–116.CrossRefGoogle Scholar
Robinson, J. J. and McDonald, I. 1979. Ovine prenatal growth, its mathematical description and the effects of maternal nutrition. Annales de Biologic Animate, Biochimie, Biophysique 19: 225–234.CrossRefGoogle Scholar
Robinson, J. J., McDonald, I., Fraser, C. and Crofts, R. M. J. 1977. Studies on reproduction in prolific ewes. 1. Growth of the products of conception. Journal of Agricultural Science, Cambridge 88: 539–552.CrossRefGoogle Scholar
Wenham, G., Adam., C. L. and Moir., C. E. 1986. A radiographic study of skeletal growth and development in fetal red deer. British Veterinary Journal 142:336–349.CrossRefGoogle ScholarPubMed