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Index
Dairy Cows

Listings
There are 62 listings in this category.
Cow Facial Eczema

A disease of sheep, goats, cattle, and deer, caused by a fungus 'Pithomyces chartarum' that lives at the base of pasture plants. Under the right climatic conditions (grass minimum temperature of greater than 12-13 deg ...

Cow Malignant Oedema

Wounds contaminated with Clostridium septicum can cause a rapidly developing and fatal disease. The carcase putrifies rapidly with discolouration of the affected areas. A lot of blood stained fluid accumulates in thos ...

Cow Mastitis Overview

Mastitis is inflammation of the udder. Inflammation in the udder is almost always caused by bacteria. Where the signs of mastitis are visible to the naked eye, the mastitis is termed clinical. If the udder and milk ar ...

Cow Tetanus

Tetanus is a disease caused by Clostridium tetani. It can affect man, sheep, pigs, cattle, horses, dogs and goats. Following any injury e.g dog bite, tail docking, dehorning, tetanus can occur. There is a gradual onse ...

Dairy Lameness and Drainage
For many dairy farmers, the unusual wet summer, has not only resulted in plenty of grass but also in the occurrence of many lame cows because the track surfaces tend to break up and disappear during the wet periods and p ...
Dairy Nutrition at Drying Off
When you have decided on the date of the final milking, reduce the daily milk yields to between 5 - 10 l/cow by that date:
  • Reduce feed intake to maintenance levels for the last 2 - 3 days before drying off an ...
Dairy Transition Time for Cows
The transition period is the period from three weeks before calving until three weeks after calving. This period is fundamental to the whole season?s production and reproduction and management strategies should focus on ...
Dairy Cow Ketosis (Acetonaemia, Acidosis)
This disease is most common in cows in good condition ten days to six weeks after calving. However, it can occur at other times and also as a secondary complication of other diseases, particularly long-standing ones, suc ...
Dairy Cows Copper Deficiency
Copper is stored in the liver. These levels deplete over winter and are lowest in winter and spring, when iron and molybdenum are highest. When animals are grazing low they pick up more iron from the soil and this interf ...
Dairy Lameness and Drainage
For many dairy farmers, the unusual wet summer, has not only resulted in plenty of grass but also in the occurrence of many lame cows because the track surfaces tend to break up and disappear during the wet periods and p ...
Dairy Neospora Abortions
Neospora is now the most commonly diagnosed cause of abortion in cattle in New Zealand and some known facts about this problem are listed here: - The dog has been confirmed experimentally as a definitive host, spreadi ...
Drying Off Treatment
In spite of plenty of food around this year, it is not always possible to keep cows in milk for the whole of the season. Persistent lameness, facial eczema on top of previous facial eczema, rising somatic cell counts in ...
Early Drying Off Decisions
The Bulk Tank Cell Count increases as the milk volume reduces towards the end of lactation. This is due to subclinical mastitis. To avoid incurring penalties later on and to continue harvesting good quality milk requires ...
Inhibitory Substances (IS) Grades
The majority of IS grades are attributable to on-farm management practices. For example where withholding periods for every cow are not respected, where recording of treatments is incomplete, where the colostrum mob is n ...
Leptospirosis
OSH has now produced a booklet ?Guidelines for the Control of Occupationally Acquired Leptospirosis? in which they provide suggestions for the management of the workplace health hazard presented by the bacteria, which ca ...
Major Mastitis Pathogens

These bacteria cause clinical mastitis, & long term, sub-clinical infections may become established if not cured. They can be split into two categories:

  1. Bacteria of contagious origin which include Staph ...
Mastitis in Dry Cows
Any cows that develop clinical mastitis during the dry period should be treated as you would a lactating cow with clinical mastitis, i.e. with a lactating cow intramammary antibiotic that belongs to the same family of dr ...
Mastitis Prevention
Cows are very susceptible to infection around calving when their natural defences are low and induced cows are particularly vulnerable to mastitis because their immune systems are even further compromised. It is therefor ...
Metabolic Diseases
Metabolic disease is a major concern at this time of year. Apart from the obvious problems of downer cows and milk fever cases, there is the more hidden cost of sub-clinical hypocalcaemia and its impact on production, di ...
Minor Mastitis Pathogens

Minor pathogens cause less udder damage than major pathogens. These infections generally remain sub-clinical, though clinical episodes may occur. They include Corynebacterium bovis and coagulase negative sta ...

Nutrition at Drying Off
When you have decided on the date of the final milking, reduce the daily milk yields to between 5 - 10 l/cow by that date: ? Reduce feed intake to maintenance levels for the last 2 - 3 days before drying off and make sur ...
Preparing for Next Season
Because there seems to be so much feed out there, it is tempting for farmers to keep milking but now is the time for many farmers to be thinking very seriously about next season?s production rather than stripping every l ...
Repeat Mastitis
It is a common problem in mid lactation to get some cows with a stubborn case of mastitis that won?t clear up despite repeat treatments with whatever antibiotic the farmer has in his drug cabinet. Success of treatment de ...
Replacement Heifers
Growing good young stock is like putting money in the bank ? the more you put in, the more you get out. How much you get out depends on the amount of care and feeding offered during the whole rearing period from birth th ...
Rumensin
At this time if the year, the downward shift in feed quantity, quality and composition have a dramatic effect on rumen efficiency and energy output. Rumensin is a popular drench, feed additive and capsule that can provid ...

Results 26 - 50 of 62
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