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New Zealand Veterinary Journal Volume 65, 2017 - Issue 3
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Scientific Articles

Effect of time of artificial insemination after oestrus detection on non-return rate of lactating dairy cows on pasture

ZZ XuLIC, Private Bag 3016, Hamilton, 3240, New ZealandCorrespondence[email protected]
Pages 119-123 | Received 27 Jan 2016, Accepted 20 Oct 2016, Published online: 30 Nov 2016

References

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  • Hall JG, Branton C, Stone EJ. Estrus, estrous cycles, ovulation time, time of service, and fertility of dairy cattle in Louisiana. Journal of Dairy Science 42, 1086–94, 1959 doi: 10.3168/jds.S0022-0302(59)90693-9
  • Hempstalk K, Harris BL, Lopdell TJ. Automatic reading of Kamars for heat detection in dairy herds. Proceedings of the New Zealand Society of Animal Production 70, 8–12, 2010
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  • Nebel RL, Walker WL, McGilliard ML, Allen CH, Heckman GS. Timing of artificial insemination of dairy cows: fixed time once daily versus morning and afternoon. Journal of Dairy Science 77, 3185–91, 1994 doi: 10.3168/jds.S0022-0302(94)77261-1
  • Trimberger GW. Conception rate in dairy cattle by artificial insemination at various intervals before and after ovulation. Journal of Dairy Science 27, 659–60, 1944
  • Trimberger GW, Davis HP. Breeding efficiency in dairy cattle bred at various stages of oestrus by artificial insemination. Journal of Dairy Science 26, 757–9, 1943
  • Verkerk GA. Pasture-based dairying: challenges and rewards for New Zealand producers. Theriogenology 59, 553–61, 2003 doi: 10.1016/S0093-691X(02)01239-6
  • Vishwanath R, Melis J, Johnson DL, Xu ZZ. Effect of timing of insemination of dairy cows with liquid semen relative to the observation of oestrus. Proceedings of the New Zealand Society of Animal Production 64, 140–2, 2004
  • Xu ZZ, McKnight DJ, Vishwanath R, Pitt CJ, Burton LJ. Estrus detection using radiotelemetry or visual observation and tail painting in dairy cows on pasture. Journal of Dairy Science 81, 2890–6, 1998 doi: 10.3168/jds.S0022-0302(98)75849-7

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