A mastitis is an inflammatory illness of a milk gland, currently the mastitis is one of the most common health problems in cattle breeding. In most cases the mastitis is caused by bacterial infections of an udder, it can be also caused by viruses, protozoa, yeast, algae and molds. There are huge variety of factors reducing defensive immune mechanisms of the udder and predispose a cow for the inflammation. An etiology of mastitis and mainly ways of prevention are very interesting not only for dairy cows breeders, but also for researchers, scientists and veterinarians. Main reason is economy of dairy cattle the inflammation of milk gland reduces actual milk production, it can influenced milk yield in next lactations and lenght of productive life of the dairy cow too. Usually culling rate and death rate grow. The mastitis has negative effect on reproduction and health status of the cow, especially on hooves' health; that also leads to shortening of cow's productive life and necessity of faster replacement of affected cows by heifers. An aim of this work is to found out risk factors which enlarges chance of the mastitis. Rate of mastitis is influenced by an age of a cow and a number of lactation, a number of days in lactation, an age of a cow at the 1st calving, an yield of the previous lactation, cases of mastitis at the 1st and next lactations and health problems on start of a lactation. A number of treated teats is influenced by an age of a cow at the 1st calving, an yield of the previous lactation and days of the dry-period. Negative effect of mastitis on the reproduction wasn't completely demonstrated; there were only found out that higher number of treating cases extends time between calvings.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:376361 |
| Date | January 2018 |
| Creators | TLUSTÁ, Tereza |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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