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New Zealand Veterinary Journal Volume 53, 2005 - Issue 5
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Short Communication

The effect of individual liveweight and use of teaser rams prior to mating on the reproductive performance of ewe hoggets

PR Kenyon Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand E-mail: [email protected]
,
PCH Morel Institute of Food, Nutrition and Human Health, Massey University, Palmerston North, New Zealand
,
ST Morris Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand E-mail: [email protected]
&
DM West Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand E-mail: [email protected]
Pages 340-343 | Received 23 Dec 2004, Accepted 23 May 2005, Published online: 18 Feb 2011

References

  • Drymundsson , OR . 1973 . Puberty and early reproductive performance in sheep. 1. Ewe lambs . Animal Breeding Abstracts , 41 : 273 – 289 .
  • Drymundsson , OR and Lees , JL . 1973 . Effect of rams on the onset of breeding activity in Clun-Forest ewe lambs . Journal of Agricultural Science , 79 : 269 – 271 .
  • Edgar , DG and Bilkey , DA . 1963 . The influence of rams on the onset of the breeding season in ewes . Proceedings of the New Zealand Society of Animal Production , 23 : 78 – 87 .
  • Jainudeen , MR , Wahid , H and Hafez , ESE . 2000 . “ Sheep and goats ” . In Reproduction in Farm Animals , 7th Edtn , Edited by: Hafez , ESE and Hafez , B . 172 – 181 . Baltimore, , USA : Lippincott Willams and Wilkins .
  • Kenyon , PR , Perkins , NR , Pinchbeck , GL , Morris , ST and West , DM . 2004 . Identifying factors which maximise the lambing performance of hoggets: a cross sectional study . New Zealand Veterinary Journal , 52 : 371 – 377 .
  • Knight , TW . 1983 . Ram-induced stimulation of ovarian and oestrus activity in anoestrous ewes — a review . Proceedings of the New Zealand Society of Animal Production , 43 : 7 – 11 .
  • Knight , TW , Oldham , CM , Lindsay , DR and Smith , JF . 1975 . Variation in the fertility of ewes during the joining period and its modification by prior contact with rams . Australian Journal of Agricultural Research , 26 : 577 – 583 .
  • McMillan , WH and Moore , RW . 1983 . Capitalizing on hogget oestrus . Proceedings of the 13th Seminar the Society of Sheep and Beef Cattle Veterinarians of the New Zealand Veterinary Association , 13 : 47 – 52 .
  • Meyer , HH and French , RL . 1979 . Hogget liveweight-oestrous relationship among sheep breeds . Proceedings of the New Zealand Society of Animal Production , 39 : 56 – 62 .
  • O'riordan , EG and Hanrahan , J P . 1989 . Advancing first estrus in ewe lambs . Farm and Food Research , 20 : 25 – 27 .
  • Schinckel , PG . 1954 . The effect of the ram on the incidence and occurrence of oestrus in ewes . Australian Veterinary Journal , 30 : 189 – 195 .
  • Smith , J F and Knight , TW . 1998 . “ Reproductive management of sheep ” . In Reproductive Management of Grazing Ruminants in New Zealand , Edited by: Fielden , ED and Smith , JF . 113 – 143 . Hamilton, , New Zealand : New Zealand Society of Animal Production .

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