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"Experientia docet" - Experience is the best teacher

The use of dried molasses in porker rations

  • 1971
  • Issue: 1
  • Volume: 1
E.H. Kemm and M.N. Ras Page: 9 - 11

Two experiments were designed to study the effect of dehydrated molasses powder on feed digestibility, rate and efficiency of gain and carcass composition of growing pigs. The inclusion in the ration of 10 and 20% dry molasses powder increased N-retention…

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Die invloed van droogte op die samestelling van mieliekuilvoer

  • 1971
  • Issue: 1
  • Volume: 1
M. von La Chevallerie, P.L. van Biljon, P.J. Boshoff & H.J. van der Merwe Page: 17 - 21

The influence of drought on the composition of maize silage: The influence of drought on the composition of maize silage was investigated. Three morphological types of maize plants were used as material i.e. normal plants with a good cob development,…

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Byvoeding aan twee tipes Merinoskape op Cymbopogon-Themeda veld gedurende die winter. I. Invloed op wolproduksie

  • 1971
  • Issue: 1
  • Volume: 1
J.Z.H. Jacobsz, P.J. Cronje, M.A. Baard en A. van Schalkwyk Page: 27 - 32

Supplementation during winter of two types of merino sheep on Cymbopogon-Themeda veld I. Influence on wool production. An experiment was conducted to determine the influence of supplementary feeding during winter on wool production. The reduction in body weight in autumn…

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Byvoeding aan twee tipes Merinoskape op Cymbopogon-Themeda veld gedurende die winter . II. Invloed op liggaamsgewig en karkas ei

  • 1971
  • Issue: 1
  • Volume: 1
J.Z.H. Jacobsz, P.J. Cronje, M.A. Baard en E.C. Skea Page: 33 - 37

Supplementation during winter of two types of merino sheep on Cymbopogon-Themeda veld. ii. Influence on body weight and carcass qualities The influence of supplementary feeding on body weight and carcass qualities of Merino wethers, of differing wool production potentials, kept…

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Wintering systems for cows in the Eastern Highveld

  • 1971
  • Issue: 1
  • Volume: 1
J. Reyneke Page: 39 - 42

Sixty mature Friesland cows were divided into six comparable groups of 10. Groups 1, 2 and 3 grazed spared veld during the winter from 15 May and received the following supplements: Group 1, a lick plus NPN, Group 2 the…

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Suitable feeding systems for fat lamb production

  • 1971
  • Issue: 1
  • Volume: 1
J. Reyneke Page: 49 - 53

The development of efficient rations for fat lamb production was investigated using a variety of succulent feeds. Forty Dohne Merino were divided annually for three years immediately after parturition into four groups of ten. Group 1 received maize silage. Group…

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Is there a lactation anoestrus in the sheep?

  • 1971
  • Issue: 1
  • Volume: 1
G.L. Hunter Page: 55 - 57

Twenty South African Mutton Merino ewes, whose breeding season begin in October/November, and twenty crossbred Mutton Merino x Border Leicester ewes, whose breeding season begin in February, lambed during the second half of October. Half of each group suckled single…

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Synchronisation of oestrus in sheep early in the breeding season: The vaginal environment and fertility

  • 1971
  • Issue: 1
  • Volume: 1
J.M. van der Westhuysen and C.H. van Niekerk Page: 59 - 62

Two hundred and eight Dormer ewes were included in an investigation into the effect on ewe fertility of dihydrostreptomycin antibiotic pessaries used with fluorogestone acetate-impregnated intravaginal (FGA) sponges for the synchronisation of oestrus and ovulation early in the breeding season.…

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Gross ovarian changes in the cycling and anoestrous Angora goat doe

  • 1971
  • Issue: 1
  • Volume: 1
P.S. Pretorius Page: 63 - 66

Ovarian follicular activity increased sharply during the first 12 days of the luteal period, then ceased temporarily. Renewed follicle growth commenced towards pro-oestrus and terminated in ovulation. Although follicular activity decreased considerably during the period of anoestrus, relative large individual…

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Verband tussen reproduksie, produksie en gedrag by Angorabokooie

  • 1971
  • Issue: 1
  • Volume: 1
G. Marincowitz Page: 73 - 76

Relation between reproduction, production and behaviour in Angora goat does: Simple and partial correlation coefficients were determined between certain reproductive, productive and behavioural properties of Angora goat does kept under penned conditions for a period of four years. Highly significant…

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The effect of daylength on the reproductive tract of the Merino ram

  • 1971
  • Issue: 1
  • Volume: 1
J.D. Skinner and J.A.H. van Heerden Page: 77 - 80

Forty-eight 2½-year-old Merino rams were maintained in a specially insulated and ventilated enclosure at constant body weight on a constant nutritional level. Four were slaughtered each month and changes studied in the reproductive tract. Weight of epididymides, sperm motility and…

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