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Latest NDSU Extension Publications

Mastitis Control Programs Milk Quality Evaluation Tools for Dairy Farmers

Mastitis Control Programs Milk Quality Evaluation Tools for Dairy Farmers - AS1131

Producers have a variety of informational tools available to monitor both the mastitis in their herds and the quality of milk being shipped to processors (Table 1). Somatic cell counts (SCC) are a measure of mastitis in a dairy herd. The SCC will increase in a quarter as a result of an infection. The increase represents white blood cells entering the quarter to fight the infection. The bulk tank somatic cell count (BTSCC) reflects the total number of infected mammary quarters in the herd that are actually being milked into the tank.

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Mastitis Control Programs

Mastitis Control Programs Bovine Mastitis and Milking Management - AS1129

Mastitis is complex; there is no simple solution to its control. Some aspects are well understood and documented in the scientific literature. Others are controversial, and opinions are often presented as facts. The information and interpretations presented here represent the best judgments currently accepted by the National Mastitis Council. To simplify understanding of the mastitis complex, it is useful to consider that three major factors are involved in this disease: the microorganisms as the causative agent, the cow as host, and the environment, which can influence both the cow and the microorganisms.

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Troubleshooting a Mastitis Problem Herd

Mastitis Control Programs Troubleshooting a Mastitis Problem Herd - AS1128

Any dairy herd that continually has a somatic cell count (SCC) above 400,000 cells/ml has a problem. Somatic cells are produced in response to an inflammation. Inflammation in the udder is called mastitis. If your bulk tank SCC is 750,000 or greater, you are in danger of losing your milk market in North Dakota. Since mastitis can be caused by man, machine, and environment, check all items to determine its cause. Records of cow treatments for at least two consecutive months are needed to determine if you have a few cows a with mastitis or a herd problem. Here are some troubleshooting tips to use if you’re experiencing somatic cell counts higher than you like.

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Proper Milking Techniques

Mastitis Control Programs Proper Milking Techniques - AS1126

Mastitis is an inflammation of the mammary gland. It is usually caused by bacteria which have penetrated the udder. These bacteria enter the udder through the teat end. They do not go from quarter to quarter without going out of the opening of one teat and into the opening of another. Proper management of cows during and between each milking is required for maximum milk production and mastitis prevention. The economic loss from mastitis makes it the dairy industry’s most important disease. The technologies to control and eradicate mastitis have been available for many years, yet bacteria still take thousands of cows out of production every year. The goal of every mastitis control program is to prevent bacteria from entering a normal and healthy mammary gland. This means that each step involved in proper milking procedures must occur at each milking every day for each cow in the herd. There are no exceptions or shortcuts to preventing mastitis.

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Preventing Hay Fires DE-1589

Preventing Hay Fires - DE1589

Excessive moisture is the most common cause of hay fires. A chemical reaction in high-moisture haystacks or bales produces flammable gas that can ignite if the temperature is high enough (about 130 F). Fire is possible in loose, baled or stacked hay stored inside or outside. Hay becomes a fire hazard when the moisture content is 20 percent or higher in small stacked bales and more than 18 percent in stacked large square or round bales. Hay fires usually occur within six weeks of baling.

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