Category Archives: CPD Articles

Common Production Diseases PART 01: Causes and Effects on High  Producing Dairy Cows

Common Production Diseases PART 01: Causes and Effects on High Producing Dairy Cows

Dietmar Holm and Martin van der Leek Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria dietmar.holm@up.ac.za From Southern Cape Proceedings 2018 Production diseases are also known as metabolic diseases, which is a bit of a misnomer.  In human and small animal medicine the term metabolic disease implies some inherent defect in… Continue Reading

Pathogenesis, prevention and  treatment of postpartum uterine disease

Pathogenesis, prevention and treatment of postpartum uterine disease

Robert O. Gilbert Professor of Theriogenology, Associate Dean, Academic Affairs,Ross University School of Veterinary Medicine,Basseterre, St. Kitts & Nevis, West Indies. From RuVASA Proceedings 2018 Introduction Postpartum diseases are common in dairy cows, and their incidence contributes to reduced fertility and increased risk of culling, making their prevention and management extremely important.  Reproductive efficiency has… Continue Reading

Field Vasectomy in Rams (Herbst Technique)

Field Vasectomy in Rams (Herbst Technique)

Dr Francois van Niekerk Humansdorp Veterinary Clinic 01 Place ram in sitting position on table [mules bed/cradle works well, so does a wheelbarrow, deep type, used by builders for concrete]. 02 With sheep shears shear/clip wool on abdomen cranial to scrotum [about 10cm]  and on cranial  aspect of  the neck of the scrotum. 03 The surgical area is … Continue Reading

CPD: Abortion and Stillbirth Investigation – PART 01: External Examination of the Fetus

CPD: Abortion and Stillbirth Investigation – PART 01: External Examination of the Fetus

Dr Rick Last – BVSc; M.Med.Vet (Pathology) Specialist Veterinary Pathologist Maximizing the use of the Fetus and Placenta Introduction The value of post mortem examination on abortions/stillbirths is often overlooked and extremely underutilized. It is a very simple and practical procedure which requires the use of simple non-expensive equipment, that is easily transportable, and so… Continue Reading

The 4 Approaches to Disease Prevention

The 4 Approaches to Disease Prevention

Dr Danie Odendaal – Veterinarian Network Increase general resistance, Increase specific resistance, Decrease exposure, and Prevent exposure. As discussed previously, the development process of every disease is different and therefore the prevention or management of every disease also needs a different approach to prevent or interrupt the process. Basically, 4 approaches are used in the… Continue Reading

Seasons in the SCC

Seasons in the SCC

Dr Alf Lategan and Dr Martin van der Leek All over the world, dairies experience an increase in somatic cell count (SCC) during summer and autumn. The extent to which climatological factors contribute to this increase in South Africa is unknown, although the weather is blamed anecdotally. Consequently, the value of heat abatement or other… Continue Reading

The costly effects of low blood calcium levels (hypocalcaemia) in freshly calved dairy cows

The costly effects of low blood calcium levels (hypocalcaemia) in freshly calved dairy cows

Dr Barry Coates (BVSc)  ‘Clinical’ milk fever and subclinical hypocalcaemia are essentially the same thing – they are both low available calcium levels in the blood. It’s only the degree or severity that differentiates the two conditions. It’s the subclinical hypocalcaemia however, that is far more costly than clinical milk fever for two simple, devastating… Continue Reading

Blood Transfusion in  Bovines

Blood Transfusion in Bovines

Dr Francois van Niekerk Humansdorp Veterinary Clinic DONOR Requirements Xylazine   1.2 ml  IM 2. Lignocaine 3. 23g needle 4. Nº 10 or 15 scalpel blade and handle 5. Blood collection needle [4 – 5mm internal diameter, available from Instavet] or trocar & cannula of similar diameter. Large plastic funnel plus plastic tube  [latter optional]… Continue Reading

CPD: Wirevax: Vaccination against Haemonchus contortus in sheep

CPD: Wirevax: Vaccination against Haemonchus contortus in sheep

Dr Hanre Ferreira Vaccination against helminths is a control concept that is currently being successfully applied in the control of Dictyocaulus viviparus (lungworm) infection in cattle in some parts of the world. Similar attempts have been made to develop vaccines against several economically important gastrointestinal nematodes in small stock and cattle (Ekoja & Smith 2010;… Continue Reading

Heifer Plan for Optimal Fertility and Herd Health

Heifer Plan for Optimal Fertility and Herd Health

Dr Danie Odendaal Key Points Fertility and health of a beef cattle herd can be built in stages over a five year period by focusing specifically on the management of replacement heifers. Improving fertility is based on selection, for functional efficiency and careful management of replacement heifers from weaning, until the end of their second… Continue Reading

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