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

تعداد نتایج: 18434493  

2004
George Barrington

Coliform mastitis is tremendously important to the dairy industry for several reasons. First, it has become the predominant form of clinical mastitis and current management practices favor an increase in incidence. Second, coliform organisms cause some of the most severe cases of clinical mastitis. Third, as present trends in the dairy industry of increasing milk quality continue, environmental...

2002
Félix Goyache Jorge Díez Secundino López Alberto Espí Antonio Bahamonde Gerardo Pajares Iván Fernández Luis José Royo Miguel Prieto Enrique Gómez

14 15 In this paper the implementation of a tool was considered, based on Machine Learning (ML) techniques to improve 16 the detection of subclinical mastitis in dairy herds. The analysed population included 71 dairy farms in Asturias 17 (Northern Spain) and a total of 2,407 lactating cows. Four sources of information were available: a) a questionnaire 18 survey describing facilities, milking r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - پژوهشکده ادبیات 1393

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...

2012
Miroslav Benić Boris Habrun Gordan Kompes

Mastitis represents one of the most important problems in modern dairy production from the economic, diagnostic and public-health related point of view. Economic significance of the mastitis is related to the decreased milk production, lower quality of the milk, veterinary expenses and withdrawing of the milk due to the antibiotic treatment. Detection of mastitis is often complicated due to the...

Journal: :Journal of dairy science 2001
F Hardeng V L Edge

The aim of this study was to investigate differences in disease incidence between organic and conventional herds. The study was based on data from the Norwegian Dairy Herd Recording, which includes the Norwegian Cattle Health Recording System. All herds certified for organic farming in 1994 with a herd size of more than five cow-years were included. Conventional herds were matched on size and r...

Journal: :دامپزشکی 0

background: q fever is a zoonosis disease caused by an obligate intracellular organism coxiella burnetii. raw milk or dairy products that are produced by unpasteurized milk may contain virulent coxiella burnetii. the objective of this study was to determine the prevalence rate of c. burnetii in bulk milk samples from dairy sheep herds in fars, ghom, kerman, khuzestan and yazd provinces, iran. m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

as the canon is shaped by white male standards rewriting the canonical works of literature is one of the ways through which postcolonial writers subvert the authority of the masters. writing in the language of the masters the colonized writers use the very suppressive tool in the hands of the masters i.e. their language to question the validity of their norms. regarded by most critics to be the...

2013
Karin Persson Waller Ylva Persson Lena Stengärde

Background In beef cows, milk production is the most important factor affecting calf growth. Thus, factors that limit production has negative effects on calf weaning weight. Mastitis is a disease, which reduces milk production and is often associated with bacterial intra-mammary infection (IMI). Studies from UK and USA indicate that subclinical mastitis and/or IMI significantly affects calf wea...

Journal: :Veterinary research 2003
Henri Seegers Christine Fourichon François Beaudeau

Mastitis is the most prevalent production disease in dairy herds world-wide and is responsible for several production effects. Milk yield and composition can be affected by a more or less severe short-term depression and, in case of no cure, by a long-acting effect, and, sometimes, an overlapping effect to the next lactation. Summary values in the literature for losses of milk production were p...

2015
Marlis Aebi Bart HP van den Borne Andreas Raemy Adrian Steiner Paola Pilo Michèle Bodmer

Mycoplasma bovis causes mastitis in dairy cows and is associated with pneumonia and polyarthritis in cattle. The present investigation included a retrospective case-control study to identify potential herd-level risk factors for M. bovis associated disease, and a prospective cohort study to evaluate the course of clinical disease in M. bovis infected dairy cattle herds in Switzerland. Eighteen ...

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