Multitrait Selection (Beef Cattle)
Can two bulls with identical Cow Values produce very different results? Dr Helena Theron explains why selecting beef cattle for a single trait can lead to…
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The how and why of Contemporary Groups
Accurate breeding values depend on distinguishing genetic differences from environmental effects. Dr Helena Theron explains why contemporary groups are…
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Genomics Perspective - What is on offer for Nguni Breeders and their Clients
How can genomic information improve breeding decisions beyond conventional BLUP breeding values? This article explains how genomics can improve the prediction…
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Breeding Values for Longevity in Beef Cattle
Why do some cows remain productive in the herd for many years while others are culled after producing only one or two calves? This article explains the…
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Breeding Values for Female Fertility in Beed Cattle
How can breeders select more fertile cattle when fertility is difficult to measure and strongly influenced by management? This article explains how SA Stud…
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Body Condition Scoring - Tuli Journal 2026
Practical guide for body condition scoring in cattle
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Die voorkoms en effek van MSTN-mutasies in SA Stamboek-vleisbeesrasse
Die voorkoms van miostatien gene (mutasies) in Suid-Afrikaanse vleisbeesrasse word deeglik bespreek. Ook die invloed daarvan op dubbelbespiering
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Double muscling: The double-edged sword
Although some European systems make use of double muscling, it is usually not desirable and is not even tolerated in South African livestock farming.
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Inteling en Lynteling
Die reguit feite oor inteling, lynteling en ander paringstelsels deur Drs Helena Theron, Bernice Mostert en Japie van der Westhuizen
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Die invloed van korrektiewe paring op seleksie
Veeboere, en selfs telers maak somtyds die fout om te dink korrektiewe parings "verander" teelwaarde-voorspellings. Maar meer belangrik: wat moet…
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Fertility and lifetime traits of Santa Gertrudis cows
Dr Helena Theron describes fertility and lifetime traits in Santa Gertrudis cows
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Seleksie vir die Koeiwaarde is die sleutel tot die seleksie vir meer winsgewende vleisbeeste.
Die positiewe effekte word gewys waar Vleisbeeste met goeie koeiwaardes vergelyk word met die ander diere. Skrywers: Drs Japie van der Westhuizen & Helena…
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