نتایج جستجو برای: background: mastitis is an important health disorder in dairy herds which affects milk production

تعداد نتایج: 18434493  

Journal: :تحقیقات دامپزشکی 0
حمید شریفی مرکز تحقیقات مدلسازی در سلامت، پژوهشکده آینده پژوهی در سلامت، دانشگاه علوم پزشکی کرمان، کرمان- ایران مینا بداغ آیادی دانشآموخته دانشکده دامپزشکی، دانشگاه شهید باهنر کرمان، کرمان- ایران محسن عادلی ساردویی گروه اقتصاد کشاورزی، دانشکده کشاورزی، دانشگاه جیرفت همایون بابائی گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه شهید باهنر کرمان، ایران جهانگیر کبوتری کتج گروه علوم پایه، پژوهشکده بیماریهای مشترک انسان و دام، دانشکده دامپزشکی، دانشگاه شهرکرد، شهرکرد، ایران

background: mastitis is an important health disorder in dairy herds which affects milk production, animal reproduction and production. objectives: the aim of this study was to estimate the cumulative incidence of mastitis in dairy herds in tehran province.  methods: from 679 dairy herds in tehran province that have more than 50 animals, 32 dairy herds were selected randomly and animals that had...

Objective: Mastitis is the most important and costly health disorder in dairy farms around the world. The aim of this study is to estimate the economic impact of mastitis in dairy herds in Tehran province. Design: Data triangulation. Methods: Data of this study were gathered using a questioner which was collected by 135 farmers in Tehran province together with 25 faculty members and DVSc grad...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

the thesis has been arranged into five chapters and mainly concerned with the baer-invariant of groups which is the generalization of the schur-multiplier with respect to the variety of groups. chapter one is devoted to collect some notation and background information which are needed in the next chapters. its also contains some important statements which will be generalized in this thesis. cha...

2000
Pamela L. Ruegg Pamela Ruegg

© 2005, Pamela L. Ruegg Premiums, Production and Pails of Discarded Milk How Much Money Does Mastitis Cost You? Pamela Ruegg, DVM, MPVM University of Wisconsin, Madison Introduction Profit centered dairy farms strive to maximize milk price and control costs. One way to control costs is by minimizing the rate of disease. The most costly disease of dairy cattle is generally considered to be masti...

Journal: :Acta Veterinaria Scandinavica 2006
Cecilia Hamilton Ulf Emanuelson Kristina Forslund Ingrid Hansson Torkel Ekman

BACKGROUND Mastitis is one of the major threats to animal health, in organic farming as well as conventional. Preliminary studies of organic dairy herds have indicated better udder health in such herds, as compared to conventional herds. The aim of this paper was to further study mastitis and management related factors in certified organic dairy herds. METHODS An observational study of 26 cer...

2015
Håkan Landin Marie Jansson Mörk Maria Larsson Karin Persson Waller

BACKGROUND Staphylococcus aureus is a common udder pathogen in dairy cows, and may cause severe mastitis problems in some herds. In herds where normal control measures are not successful, vaccination might be an additional tool to use if sufficiently efficient. The aim of the present study was to evaluate the efficacy of a commercially available vaccine (Startvac(®), Hipra, Spain) in two commer...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1389

nowadays, the development of anti cancer drugs is an important subject in pharmacology. bisphosphonates (b.p) are a great choice for design and production of the types of drugs which not only could perform as anti cancer agents but also could inhibit the function of acetyl cholinesterase (ache). ache hydrolyzes the acetylcholine (which is a neurotransmitter in nervous system) using the oh in i...

Journal: :iranian journal of veterinary science and technology 0
masoud talebkhangaroussi ali reza khosravi saeideh pandamoz

mastitis in cattle is a serious problem which causes considerable economic losses in the dairy cattle herds. the aim of this survey was to identify mycoflorain milk of healthy, clinical and subclinical mastitis of lactating holstein dairy cows. milk samples of 154 holstein dairy cows were collected from 10 dairy cattle herds in suburb of mashhad-iran. the treatment groups included 104 lactating...

Journal: :Veterinary research 2003
Satu Pyörälä

Mastitis affects the quality of milk and is a potential health risk for the other cows. In a well managed dairy herd, in addition to clinical mastitis, subclinical mastitis should be efficiently detected. Bacteriological sampling is not feasible as a routine test to identify subclinical mastitis, and indirect tests of mastitis are more suitable for selecting cows with intramammary infections fo...

2001

Mastitis is probably the most important health disorder on dairy farms. This is reflected in a relatively high incidence of clinical mastitis and, on many farms a high prevalence of subclinical mastitis. Additionally, mastitis causes the quality of the milk to decrease, resulting in a loss of production and/or a less than optimal product. To this end, the dairy industry faces worldwide penalty ...

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