Effects of bovine necrotic vulvovaginitis on productivity in a dairy herd in Israel
| Autor: | Jacob Brenner, Daniel Elad, T. Goshen, Orly Friedgut, Shlomo E. Blum, M. Mazuz, O. Koren |
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| Rok vydání: | 2008 |
| Předmět: |
Veterinary medicine
media_common.quotation_subject Cattle Diseases Fertility Culling Biology Disease Outbreaks Animal science Milk yield Pregnancy Bacteroidaceae Infections Animals Lactation Porphyromonas Israel media_common General Veterinary Porphyromonas levii Postpartum Period food and beverages Outbreak Vulvovaginitis Milk production Dairying Milk Herd Cattle Female Animal Science and Zoology |
| Zdroj: | The Veterinary Journal. 176:245-247 |
| ISSN: | 1090-0233 |
| DOI: | 10.1016/j.tvjl.2007.02.020 |
| Popis: | Bovine necrotic vulvovaginitis (BNVV) is characterized by the development of a necrotic vulvovaginal lesion, almost exclusively in post-parturient first-lactation cows, associated with Porphyromonas levii . The scope of this survey was to evaluate the impact of BNVV on herd productivity as a means to rationally evaluate the resources that should be allocated in dealing with the syndrome. During an outbreak of BNVV in a dairy herd, following the introduction of a large number of cows from another farm, the impact of the animals’ origin (local or transferred) and BNVV (positive or negative) upon involuntary culling rate, milk yield and days between pregnancies were assessed. The results indicated that the number of days between pregnancies was significantly higher in first-lactation cows with BNVV but was not influenced by the other independent variables. None of the other variables included in this survey had any effect on the involuntary culling rate and milk yield. |
| Databáze: | OpenAIRE |
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