Endometritis & Mmetrichecking
Endometritis is a low-grade infection of the lining of the uterus that affects fertility and increases the period from calving to conception if a cow is infected. Most cows become infected around calving time. Treatment should be aimed at restoring fertility.
Some cows are more "at risk" than other cows of having endometritis. These are cows that have had assisted calvings, retained foetal membranes, twins, or observed vaginal discharge; or have been down with milk fever/ grass staggers, induced, or unwell after calving. These cows should go on your "at risk" list and should be presented for examination or treatment well before the start of mating. It has come to light that treating all at risk cows, rather than metrichecking them and treating the positive ones may be the best strategy. This is because the metrichecking will miss some cows with sub-clinical endometritis.
For the whole herd or the remaining cows that aren’t "at risk", metrichecking is a quick procedure that can be used to diagnose endometritis by detecting a discharge from the cervix. There is more advantage to diagnosing and treating these cows early. Therefore, check the early calvers first and the late calvers a few weeks after rather than doing the whole herd just before mating begins!
Sure, some of these cows may cure by themselves, however this will be later than if you intervened early with appropriate treatment. This will mean potentially these cows will be in calf late or turn up empty. An indication that you may have problems with endometritis is if you have noticed "repeat breeders" during the previous mating season or if your vet has diagnosed cows with "pyometras" at pregnancy scanning time.
Read more >Friday 1st of April 2016: Non-cycling cows are cows that have not yet shown a heat at the planned start of mating. They occur for a wide variety of reasons including low body condition, endometritis, lameness etc.
Read more >Friday 1st of April 2016: Dairy production systems are changing from the traditional NZ all grass, seasonal systems to more supplement based, often split-calving systems. Dairy nutrition is a complicated process and a lot of research is done all over the world to optimize the way we feed our dairy cows.
Read more >Friday 1st of April 2016: Be vigilant with young dairy stock at this time of the year to ensure they have adequate feeding and parasite control in place.
Read more >Friday 1st of April 2016: Velvet antler removal is defined as a "controlled surgical procedure" under the Animal Welfare Act 1999. This means the procedure can only be performed by, or under the direct supervision of, a veterinarian.
Read more >Friday 1st of April 2016: In what has become a regular feature of our May calendar, we host a group of final year Massey University vet students here who are doing a Special Interest Topic in deer.
Read more >Friday 1st of April 2016: NZ has just one species of tick and luckily it doesn't carry any major diseases. However, we are seeing increasingly more properties with tick problems, especially deer farms.
Read more >Friday 1st of April 2016: For those of you that subscribe to the AgLetter - I refer you to the excellent article of the 3rd July issue. As usual Chris Garland and his team get the "good noise" on issues and present excellent information to the industry. This article reviewed the practice of using Long Acting (LA) treatments in ewes pre lamb and my comments are as follows (you will need to read the article first).
Read more >Friday 1st of April 2016: Lice infestation in sheep is primarily caused by the biting louse Bovicola Ovis.
Read more >Friday 1st of April 2016: Teaser rams are entire rams that have been vasectomised. They have both testes still so they are keen to do the job but the operation has rendered them infertile - permanently. They are used to encourage ewes to begin oestrus activity in autumn and if used correctly the teaser rams can get this oestrus activity very well synchronized. This has some big positives - read on.
Read more >Friday 1st of April 2016: The Cause: A protozoal parasite, Toxoplasma gondii, causing 20-30% of ewe abortions in this country.
Read more >Friday 1st of April 2016: The Cause: The bacterium, Campylobacter fetus. Formerly known as "vibrio".
Read more >Friday 1st of April 2016: One of the tools in the parasite battle toolbox is the concept of "refugia". It goes against a farmer's natural instinct to kill every parasite because it means deliberately leaving 5-10% of each mob undrenched. This is done to maintain parasites susceptible to drenches because they've never been exposed.
Read more >Friday 1st of April 2016: Dogs have an interesting reproductive cycle, rather different to most domestic animals that cycle either seasonally or throughout the year. In the domestic canine, females cycle more or less every six months, with larger breeds tending to cycle less frequently - sometimes only once a year.
Read more >Friday 1st of April 2016: Eukanuba Adult Large Breed Premium Performance Formula. Recommended for large and giant breed adult dogs weighing 25kg or more.
Read more >Friday 1st of April 2016: With the current surge in interest in equine dentistry, more than a few myths have crept into popular belief. Find out more.
Read more >Friday 1st of April 2016: Spring and early summer are the high risk periods for pasture - induced laminitis, so this is a timely reminder of what this disease is and how you can avoid it.
Read more >Friday 1st of April 2016: There have been some statements regarding vaccination in dogs (and Dobermans in particular) floating around the internet for some time now which in my opinion are a cause for concern. Vaccination of dogs is done for one reason only - to protect the health of the animal by providing it with immunity against certain very serious diseases.
Read more >Friday 1st of April 2016: Sheep measles (Taenia Ovis) unlike true hydatids (Echinococcus granulosus) has no human health risks, but its importance lies in the fact that it leads to cysts through the carcass of the animal which are unsightly and lets face it, who wants to eat meat with visible oozing cysts.
Read more >Friday 1st of April 2016: Dogs and cats can be poisoned by products that are readily available around the house as well as those that are being used to reduce the possum, rat/mice and slug population. Remember dogs are natural scavengers and even during a hard days work can usually find time to snack on a tasty morsel that they come across.