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Original Articles

Oestrous Cycle Characteristics of the Nigerian Dwarf Sheep

1.—Duration of oestrous and length of oestrous cycle

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Pages 298-305 | Accepted 01 Mar 1980, Published online: 11 Dec 2015

References

  • Anderson, L. (1949) cited by E.S.E. Hafez (1952).
  • Asdell, S. A. (1946). Patterns of mammalian reproduction. Ithaca, New York, Comstock Publishing Co.
  • Cole, H. H. and R. F. Miller (1935). Changes in the reproductive organs of the ewe with the same data bearing on their control. Am. J. Anat. 57, 39–97.
  • Cupps, P. T.; L. L. Anderson and H. H. Cole (1969). The Oestrous Cycle in “Reproduction in Domestic Animals”. 2nd Ed. By H. H. Cole and P. T. Cupps. Academic Press, New York and London.
  • Hafez, E. S. E. (1952). Studies on the breeding season and reproduction of the ewe. J. Agric. Sci. 42, 189–265.
  • Hulet, C. V.; E. L. Wiggins and S. K. Ercan-Brack (1969). Oestrus in range lambs and its relationship to life-time reproductive performance. J. Anim. Sci. 28, 246–252.
  • Jollans, J. L. (1960). A Study of the West African Dwarf Sheep in the closed forest zone of Ashanti. W. A. J. Biol. Chem. 3, 74–80.
  • Joubert, D. M. and Louw (1964) cited by Cupps et al. (1969).
  • Lasley, J. F. (1968). Oestrous Cyles in “Reproduction in Farm Animals”. 2nd Ed. By E.S.E. Hafez, Lea & Febiger, Philadelphia.
  • McKenzie, F. F. and Terrill, C. E. (1937). Oestrus, ovulation and related phenomena in the ewe. Research Bulletin. Miss. Agric. Exp. St. No. 264.
  • Mounib, M. S., Ahmed, I. A. and Hamada, M. K. O. (1956). A study of the sexual behaviour of the Female Rahmany Sheep. Alexandria J. Agric. Res. 4(2), 85–108.
  • Orji, B. I. (1976). Studies on the biology of reproduction of the Nigerian Dwarf Sheep. Ph.D. Thesis. University of Ibadan, Nigeria.
  • Pepelko, W. E. and Clegg, M. T. (1965). Studies of mating behaviour and some factors influencing the sexual response in the male sheep Ovis Aries. Anim. Behaviour B: 249–258.
  • Walker, D. E. (1943). cited by E. S. E. Hafez (1952).
  • Wiggins, E. L., Barker, H. B. and Miller, W. W. III, (1969). Oestrual activity in poen Rembouillet ewes. J. Anim. Sc. 30:405.
  • Wiggins, E. L., Miller, III W. W. and Baker, H. B. (1970). Age at puberty in fall-born ewe lambs. J. Anim. Sc. 30, 974–977.

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