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Dairy R&D in SA

by Heinz Meissner

Click on any of the publications below to read more about the specific topic:


Title Date Discipline Extract Keywords
GENOMIC SELECTION: WHAT IS IT AND HOW DOES IT WORK

Discipline: breeding; 

This overview was kindly provided by Prof Esté van Marle-Köster of the University of Pretoria.

Genomics defined in broad terms:

 genome, DNA, SNP markers, GEBV’s, chromosome
MANAGING HEALTHY SOILS FOR SUSTAINABLE PASTURE PRODUCTION.

Discipline: grazing/pastures; 

 fertility, microbial biomass, microbial functional diversity, organic matter, total nitrogen, plant production, soil disturbance, tillage
EFFECT ON FEED INTAKE, MILK PRODUCTION AND MILK COMPOSITION OF HOLSTEIN COWS BY REPLACING MAIZE GRAIN WITH WHEAT IN TOTAL MIXED RATIONS.

Discipline: Nutrition/feeding;

 Lucerne hay, energy sources, inclusion level, milk yield parameters, oat hay, wheat
WATER MANAGEMENT ON FARMS.

Discipline: environment; 

 blue and green water, veld management, water quality, waste disposal
BREEDING OBJECTIVES FOR HOLSTEIN CATTLE IN SOUTH AFRICA

Discipline: breeding;

 

 butterfat yield, economic value, live weight, longevity, milk yield, protein yield, Relative economic value, somatic cell score
A COST-BENEFIT MODEL COMPARING THE CALIFORNIA MILK CELL TEST AND MILK ELECTRICAL RESISTANCE TEST.

Discipline: mastitis; 

 cost-benefit analyses, California Milk Cell Test, Milk Electrical Resistance Test
The effect of low-dose gamma irradiation and temperature on the microbiological and chemical changes during ripening of Cheddar cheese

Discipline: cheese; 

The effect of 4 kGy ionisation irradiation, combined with ripening temperatures at 8°C and 16°C on the ripening of Cheddar cheese was investigated. Changes in cheeses were monitored by sensory, microbiological, and chemical analyses.

 irradiation, sensory and chemical analysis, psychotrophs
Antimicrobial properties of lactic acid bacteria and yeast-LAB cultures isolated from traditional fermented milk against pathogenic Escherichia coli and Salmonella entiriditis strains.

Discipline: microbiology; 

 human clinical samples, fermented milk, lactic acid bacteria, starter cultures
Milk composition as technique to evaluate the relative bioavailability of a liquid rumen protected methionine source

Discipline: nutrition/feeding; 

 milk composition, rumen protected methionine, amino acids, Holstein cows
NON-GENETIC FACTORS AFFECTING FERTILITY TRAITS IN SOUTH AFRICAN HOLSTEIN COWS

Discipline: reproduction;

 

 services per conception, interval to first insemination, days open, dairy cows