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"Experientia docet" - Experience is the best teacher

Milk progesterone on day 5 following insemination in the dairy cow: associated metabolic variables and reproductive consequences

  • 2018
  • Issue: 2
  • Volume: 48
L. Y. Yan, R. S. Robinson, Z. D. Shi & G. E. Mann Page: 361 - 368

Despite the importance of progesterone on the fertility of lactating dairy cows, the factors that affect post ovulatory progesterone concentration are still unclear. Thus, the aim of the present study was to identify factors associated with the post ovulatory progesterone…

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Preliminary genome-wide association study for wet-dry phenotype in smallholder ovine populations in South Africa

  • 2017
  • Issue: 3
  • Volume: 47
A.H. Molotsi, J.F. Taylor, S.W.P. Cloete, F. Muchadeyi, J.E. Decker, L. Sandenbergh & K. Dzama Page: 327 - 331

The aim of this study was to identify single nucleotide polymorphisms (SNPs) associated with genomic region underlying variation in the binomial reproductive trait ‘wet-dry’ in sheep. The wet-dry phenotype was used to represent the reproductive status of the ewes, divided…

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Artificial insemination of Angora goat does with pelleted deep-frozen semen

  • 1983
  • Issue: 2
  • Volume: 13
P.G. Loubser, J.P.C. Greyling and K.S. Viljoen Page: 134 - 135

An experiment was designed to test the effectiveness of deep-frozen Angora goat semen after insemination. Oestrous periods of Angora goat does were synchronized with the progesterone sponge technique and the does were inseminated with pelleted deep-frozen semen at oestrus. Two…

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