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"Experientia docet" - Experience is the best teacher

Nutrition of ruminant livestock grazing natural pasture, with special reference to supplementary phosphorus and sodium chloride – a South African perspective

  • 2025
  • Issue: 10
  • Volume: 55
H.O. de Waal Page: 505 - 523
  • 2026-07-11
  • Megan North

South Africa has a long history of studying specific dietary deficiencies in livestock grazing natural pastures (veld), with these pastures generally regarded as deficient in protein and phosphorus. The pioneering work by Sir Arnold Theiler and co-workers focused on addressing…

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How does ewe age affect reproductive performance relative to rainfall conditions?

  • 2025
  • Issue: 11
  • Volume: 55
P.G. Theron, T.S. Brand, S.W.P. Cloete, & J.H.C. van Zyl Page: 524 - 538
  • 2026-07-11
  • Megan North

With climate change and its associated impacts on weather patterns being an inescapable reality, livestock producers will have to explore management and mitigation strategies to maintain production levels under adverse weather conditions. It is well-documented that ewe age affects reproductive…

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Possible factors affecting the bioavailability of copper and the copper requirements of wild, free-ranging African herbivores: A review

  • 2025
  • Issue: 11
  • Volume: 55
J.B.J. van Ryssen & G.F. Bath Page: 539 - 550
  • 2026-07-11
  • Megan North

Free-ranging wild herbivores in Africa comprise 78 species of ruminants and several species of monogastric hindgut fermenters, and are classified as grazers, mixed feeders, and browsers. The objective of this review is to provide guidance to wildlife nutrition advisers by…

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Effects of different feeding regimes on growth performance, intake, digestibility, and ruminal metabolic and morphological characteristics in Awassi lambs

  • 2025
  • Issue: 12
  • Volume: 55
A.A. Aboragah,‎ H.H. Al-Baadani, A.S. Alharthi, B.M. Almaarik, & I.A. Alhidary Page: 561 - 576
  • 2026-07-11
  • Megan North

The aim of this research was to investigate the effects of different feeding regimes on the growth performance, nutrient intake, apparent digestibility, and ruminal metabolic and morphological characteristics of Awassi lambs. A total of 96 lambs (initial age: 10 ±…

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Development and characterisation of a tambaqui (Colossoma macropomum) fish burger enriched with soy okara

  • 2025
  • Issue: 12
  • Volume: 55
C.S. Santana, M.O. Santos, R.F. Oliveira, L.S. Coutinho, R.F. Oliveira, A.C. Costa, & M.A.P. Silva Page: 577 - 598
  • 2026-07-11
  • Megan North

This study aimed to develop and characterise a fish burger made from mechanically separated tambaqui (Colossoma macropomum) meat and incorporating soy okara as a functional ingredient. Four fish burger formulations were developed and the physicochemical characteristics (moisture, ash, lipid, protein,…

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