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"Experientia docet" - Experience is the best teacher

Effects of kefir as a probiotic source on the performance of goat kids

  • 2010
  • Issue: 4
  • Volume: 40
C. Atasoglu, H.I. Akbag, C. Tölü, G. Das, T. Savas and I.Y. Yurtman Page: 363 - 370

Kefir is a sour, viscous, slightly carbonated and alcoholic milk beverage, which is traditionally fermented using a culture of bacteria and yeasts. The influence of kefir on health has been well studied in mice and rats. However, research on kefir…

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Environmental-genotype responses in livestock to global warming: A southern African perspective (Invited paper)

  • 2010
  • Issue: 5
  • Volume: 40
M.M. Scholtz, D. Furstenburg, A. Maiwashe, M.L. Makgahlela, H.E. Theron and J. van der Westhuizen Page: 408 - 413

Global warming will change Southern Africa’s environments from grass dominated vegetation to dry woodland and desert with a vegetation of C4 dominated grasses, whereas the grazing capacity is expected to decline by more than 30%. Animals will also be more…

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Effect of two levels of supplementary feeding and two stocking rates of grazing ostriches on irrigated lucerne dry matter intake

  • 2010
  • Issue: 5
  • Volume: 40
M. Strydom, J.M. van Heerden, T.S. Brand and B.B. Aucamp Page: 424 - 428

This study determined the effect of two stocking rates of ostriches (10 and 15 birds/ha) and two levels of supplementary feeding (0 and 800 g/bird/day) on the intake and production of irrigated lucerne pastures over a period of five months…

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Preliminary results on the description of body composition change in ostriches (Struthio camelus) under optimal feeding conditio

  • 2010
  • Issue: 5
  • Volume: 40
W.J. Kritzinger, T.S. Brand, R.M. Gous, L.C. Hoffman and F.D. Mellett Page: 429 - 433

A study was conducted to describe the changes occurring in body composition of ostriches over a 285-day growth period. Fifty two birds were given a choice of four diets with different protein (180 and 120 g/kg feed) and energy (8.5…

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The response in food intake and reproductive parameters of breeding ostriches to increasing dietary energy

  • 2010
  • Issue: 5
  • Volume: 40
T.S. Brand, T.R. Olivier and R.M. Gous Page: 434 - 437

Elucidating the factors affecting feed intake is important when quantifying nutrient responses in breeding ostriches. The experiment was conducted to determine to what extent dietary energy content will affect the important production parameters of breeding ostriches. Ninety pairs of breeding…

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Between male variation in semen characteristics and preliminary results on the dilution of semen in the ostrich

  • 2010
  • Issue: 5
  • Volume: 40
M. Bonato, P.K. Rybnik , I.A. Malecki, C.K. Cornwallis and S.W.P. Cloete Page: 438 - 441

This study is part of an ongoing project on artificial insemination in ostriches. The physical output of neat semen from four ostrich males was investigated and the effect of reconstituting semen with: 1) seminal plasma of the same male (SPS);…

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Dietary manipulation of oil production in commercial emu

  • 2010
  • Issue: 5
  • Volume: 40
P. Matlhoko, E.C. Webb and P. Chamunorwa Page: 442 - 445

The aim of this research was to optimize emu oil production by manipulation of the dietary protein and energy ratios for greater fat accretion. The research was done at African Emu Ranch in Muldersdrift, Gauteng. Twenty-four, four to five months…

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Embryo transfer using cryopreserved Boer goat blastocysts

  • 2010
  • Issue: 5
  • Volume: 40
K.C. Lehloenya and J.P.C. Greyling Page: 446 - 450

The aim of this trial was to evaluate the effect of embryo cryopreservation techniques on the survivability of embryos and fertility following transfer to Boer goat does. The oestrous cycles of 27 mature recipients Boer goat does were synchronised using…

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Genetic trends in South African terminal sire sheep breeds

  • 2010
  • Issue: 5
  • Volume: 40
O.T. Zishiri, S.W.P. Cloete, J.J. Olivier and K. Dzama Page: 455 - 458

Genetic trends were constructed for early growth traits in the Dormer and Ile de France terminal sire sheep breeds. The traits that were considered were birth weight, pre-weaning weight, weaning weight and post-weaning weight. However, pre-weaning weights were only available…

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The effect of age and gender on the fat distribution in Merino lambs

  • 2010
  • Issue: 5
  • Volume: 40
E.J. van der Westhuizen, T.S. Brand, L.C. Hoffman and B.B. Aucamp Page: 459 - 461

The goal of this study was to determine the effect of gender on visceral and subcutaneous fat distribution of Merino lambs finished off under feedlot conditions. The diet (16% protein, 10MJ ME/kg feed) was fed ad libitum and animals had…

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A comparison of genetic diversity between South African conserved and field chicken populations using microsatellite markers

  • 2010
  • Issue: 5
  • Volume: 40
B.J. Mtileni, F.C. Muchadeyi, S. Weigend, A. Maiwashe, E. Groeneveld L.F., Groeneveld, M. Chimonyo and K. Dzama Page: 462 - 466

The objective of the study was to determine genetic diversity within South African indigenous chicken populations and the effectiveness of the current conservation flocks in capturing the available diversity in the founder populations. Two chicken populations, Venda (VD_C) and Ovambo…

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