401
Views
12
CrossRef citations to date
0
Altmetric
Original Articles

Flock mating in sheep

II. Effect of number of ewes per ram on mating behaviour and fertility of two-tooth and mixed-age Romney ewes run together

Pages 123-128 | Received 05 Oct 1976, Published online: 30 Jan 2012

References

  • Allison , A. J. 1975a . Flock mating in sheep. I. Effect of number of ewes joined per ram on mating behaviour and fertility . N.Z. Journal of Agricultural Research , 18 : 1 – 8 .
  • Allison , A. J. 1975b . Ewe and ram fertility in commercial flocks mated with differing numbers of ewes per ram . N.Z. journal of Experimental Agriculture , 3 : 161 – 167 .
  • Allison , A. J. and Davis , G. H. 1976a . Studies of mating behaviour and fertility of Merino ewes. I. Effects of number of ewes joined per ram, age of ewe, and paddock size . N.Z. Journal of Experimental Agriculture , 4 : 259 – 267 .
  • Allison , A. J. and Davis , G. H. 1976b . Studies of mating behaviour and fertility of Merino ewes. II. Effects of age of ewe, live weight, and paddock size on duration of oestrus and ram-seeking activity . N.Z. Journal of Experimental Agriculture , 4 : 269 – 274 .
  • Allison , A. J. , Thompson , K. F. and Davis , G. H. Liveweight fertility relationships in Merino and half-bred ewes in a high country environment . Proceedings of the N.Z. Society of Animal Pro duction . Vol. 34 , pp. 45 – 50 .
  • Blockey , M. A. de B. , Parr , R. A. and Restall , B. J. 1975 . Wastage of ova in young Merino ewes . Australian Veterinary Journal , 51 : 298 – 302 .
  • Blockey , M. A. de B. and Cumming , I. A. Mating behaviour of Merino ewes . Proceedings of the Australian Society of Animal Production . Vol. 8 , pp. 344 – 347 .
  • Croker , K. P. and Lindsay , D. R. 1972 . A study of the mating behaviour of rams when joined in different proportions . Australian Journal of Experimental Agriculture and Animal Husbandry , 12 : 13 – 18 .
  • Dawe , S. T. , Bennett , N. W. , Donelly , F. B. , Ferguson , B. D. , Rive , J. P. , Roberts , B. C. and Trimmer , B. I. The comparative reproductive performance of ewes joined to one or three percent of rams . Proceedings of the Australian Society of Animal Production . Vol. 8 , pp. 317 – 320 .
  • Dawe , S. T. , Archer , W. R. , Bennett , N. W. , Brunskill , A. , Cahill , J. R. , Donelly , F. B. , Roberts , B. C. and Trimmer , B. I. The effect of ram percentage on the fertility of maiden ewes . Proceedings of the Australian Society of Animal Production . Vol. 10 , pp. 274 – 278 .
  • Edgar , D. G. 1962 . Studies on infertility of ewes . Journal of Reproduction and Fertility , 3 : 50 – 54 .
  • Hulet , C. V. , Blackwell , R. I. , Ercanbrack , S. K. , Price , D. A. and Wilson , I. O. 1962 . Mating behaviour of the ewe . Journal of Animal Science , 21 : 870 – 874 .
  • Lambourne , L. J. The management of rams for a high lambing percentage. Mating behaviour . Proceedings of the Ruakura Farmers Conference Week . pp. 16 – 20 .
  • Lightfoot , R. J. and Smith , J. A. C. 1968 . Studies on the number of ewes joined per ram for flock matings under paddock conditions. 1. Mating behaviour and fertility . Australian Journal of Agricultural Research , 19 : 1029 – 1042 .
  • Lindsay , D. R. 1966 . Modification of behavioural oestrus in the ewe by social and hormonal factors . Animal Behaviour , 14 : 73 – 83 .
  • Salamon , S. and Robinson , T. J. 1962 . Studies on the artificial insemination of Merino sheep. 1. The effects of frequency and season of insemination, age of ewe, rams and milk diluents on lambing performance . Australian Journal of Agricultural Research , 15 : 52 – 68 .

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.