Mycoplasma outbreak; CRV closely monitoring situation

category General

Mycoplasma Bovis is a micro-organism of cattle. It has recently been found in NZ for the first time in a dairy herd in South Canterbury. The disease does not affect humans.
There is currently a major MPI response to contain and eradicate the disease on farms affected. This is MPI’s current goal but may change as more information becomes known and the situation evolves. CRV Ambreed are receiving daily updates from MPI on the latest outcomes of the on-farm investigations and management of the disease.

Testing for the disease has its challenges and as this is a new disease in New Zealand, laboratories have had to gear up to respond to this. Testing is done using a PCR test on samples which currently takes 7 days.

The disease
The organism can cause a variety of clinical signs in cattle depending on factors such as their age. Usually more than one of the symptoms listed below exist in affected animals on affected properties.
• Mastitis
• Abortion followed by severe uterine infections
• Pneumonia more likely in calves
• Arthritis
• Loss of milk production
• Sometimes death, more likely in calves
• Ear infections

The disease can present differently between herds and even countries. This can depend on many variables including the strain of the organism and the management practices on farm. A few animals in a herd may be affected or large outbreaks may occur. Treatment and elimination in cattle is difficult due to the nature of the organism.

Disease spread
The principle means of spread is via direct contact between animals (natural mating, purchased stock, nose to nose over a boundary). It can also be spread via aerosols (e.g. rearing sheds, milking stalls) or via body fluids such as infected milk fed to calves or cross contamination during the milking process. The organism can be found in all body fluids including milk, urine, mucus, saliva, semen and faeces.
MPI have issued a statement that currently it is not thought that imported semen is the source of the current disease outbreak in cattle. MPI have stringent protocols on imported semen and believe these eliminate the disease. As more information is released by MPI we will, as appropriate, provide further updates.
Where the disease has been identified on farms, CRV Ambreed will follow all MPI procedures if we are required to provide services to these farms, to prevent the spread of the disease. This may include herd testing or AI services. Measures such as disposal or equipment not leaving an infected farm will be set by MPI and CRV Ambreed will follow these.
Further reminders will be given to all staff including herd testers and AI technicians during the upcoming refresh training seminars/workshops with regard to the importance of following ALL hygiene protocols at all times. The importance of this applies to all management practices CRV Ambreed sets to protect farmers and their cows.

CRV Ambreed semen stocks and CRV Ambreed bulls
CRV Ambreed’s adherence to MPI protocols and strict CRV Ambreed Bellevue centre bio-security standards, including rigorous health testing, means CRV Ambreed bulls and semen stocks meet all current health/disease elimination and mitigation requirements. Our high hygienic standards across all parts of the farm, collection, laboratory and processing methods (including the appropriate use of anti-biotics in our frozen semen) and distribution are an important part of our operation. This should give all a high level of confidence that CRV Ambreed’s compliance and processes are sound. CRV Ambreed’s imported product meets all current import and bio-security controls.

CRV Ambreed’s bulls are continually monitored by our centre veterinarians and trained collection staff to ensure bulls are always healthy at the time of collection.

CRV contacts for more information.
CRV Ambreed Centre Veterinarians – Bill Hancock / Cecilia Van Velsen
CRV Ambreed Senior Management Team – Angus Haslett / Andy Medley
See MPI Website for latest updates.
10th August 2017

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