نتایج جستجو برای: number of dairy cattle animal unit equivalent

تعداد نتایج: 21223976  

2009
Nigatu Kebede Getachew Tilahun Asrat Hailu

The study was conducted to develop and evaluate an Indirect Hemagglutination Antibody Test (IHAT) for the serological diagnosis of Cysticercus bovis in live animals. IHAT was set-up inhouse and used to test serum samples of cattle against sheep red blood cell (SRBC) coated with crude extracts of C. bovis cyst. Serum samples for screening were collected from Addis Ababa abattoir (n=522), a dairy...

هدایت ایوریق, نعمت, پوراسد آستمال, کبری,

In this study the causes of culling in 9 industrial dairy farms in northwest of Iran between 2008 to 2013 were investigated. The impact of various factors on culling was analyzed using the GLIMIX procedure of SAS 9.2. The results showed that from 5404 dairy cows culled, voluntary and involuntary culling rate were 24.8% and 75.2 % respectively. Infertility and metabolic disorders were the most f...

Journal: :BMC Veterinary Research 2009
Jon I Esteban Beatriz Oporto Gorka Aduriz Ramón A Juste Ana Hurtado

BACKGROUND Listeria monocytogenes is among the most important foodborne bacterial pathogens due to the high mortality rate and severity of the infection. L. monocytogenes is a ubiquitous organism occasionally present in the intestinal tract of various animal species and faecal shedding by asymptomatically infected livestock poses a risk for contamination of farm environments and raw food at the...

2002
Phillip E. Kaufman

There are 10 major arthropod pest species affecting dairy cattle including six fly and four louse species. Damage inflicted by arthropods falls into two categories: direct damage and indirect damage. Direct damage includes blood loss, introduction of salivary secretions, tissue damage, reduced value of saleable animal products, and annoyance. Indirect damage includes transferring pathogenic org...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
محمد جلال زاده دانشگاه اصفهان، جغرافیا و برنامه ریزی روستایی جواد قاسمی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، اقتصاد و توسعه کشاورزی سمیه گودرزی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، اقتصاد و توسعه کشاورزی کاظم فرجاد نیا پردیس کشاورزی و منابع طبیعی دانشگاه تهران، اقتصاد و توسعه کشاورزی زهرا قارون پردیس کشاورزی و منابع طبیعی دانشگاه تهران، اقتصاد و توسعه کشاورزی

the purpose of this study was to analyze the instruments of risk management in the industrial dairy cattle farms in uromieh and khoy counties. the industrial dairy cattle farms in uromieh and khoy counties (n= 84) altogether constituted the statistical population of the study. by use of simple sampling method, 50 cattle farmers were selected as sample. the research design was a survey method on...

M.A. Baset M.M.H. Khan M.N. Uddin, M.R. Akanda M.R. Islam, S.A. Belal,

Milk urea nitrogen (MUN) of dairy cows was determined in relation to breed. A total of forty (40) Pabna and red Chittagong dairy cattle each of twenty (20) were selected to know the milk composition, nutritional status and milk urea nitrogen. Live weight of Pabna Cattle (187±14 kg) was higher than that of red Chittagong cattle (174±4 kg). In Pabna cattle milk yield (4.94 kg), minerals (0.15%) a...

2010
Johan Höglund

Background Cattle are economically the most important livestock for farmers in Sweden. However, both dairy and beef production has been subjected to considerable structural change over recent decades. Currently, there are approximately 1.5 million cattle, including ≈370 000 dairy cows producing milk worth 1 m€ [1]. The trend is that the numbers of dairy cows are decreasing slowly, while beef co...

Journal: :علوم دامی ایران 0
حسین ارزانی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران سعید برخوری دانشجوی سابق کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران جواد معتمدی دانشجوی دکتری پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین آذرنیوند دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

information on animal daily forage needs is essential for an estimation of rangeland grazing capacity. accordingly, weight and animal unit equivalent (aue) for each individual class of animal should be determined. live weights of baloochi sheep as based on average live weights of 3 and 4 year old ewes were determined. five herds of baloochi breed sheep were selected for the task. in each herd, ...

Journal: :Animal : an international journal of animal bioscience 2015
O Tallo-Parra X Manteca M Sabes-Alsina A Carbajal M Lopez-Bejar

Hair may be a useful matrix to detect cumulative cortisol concentrations in studies of animal welfare and chronic stress. The aim of this study was to validate a protocol for cortisol detection in hair from dairy cattle by enzyme immunoassay (EIA). Seventeen adult Holstein-Friesian dairy cows were used during the milking period. Hair cortisol concentration was assessed in 25-day-old hair sample...

2015
Bianca Cox Antonio Gasparrini Boudewijn Catry Jaco Vangronsveld Tim Nawrot

Background Extreme temperatures are associated with increased mortality among humans. The use of animal sentinels may improve causality of epidemiologic findings in humans and may provide additional insights. Animal sentinels have the advantage that they are less subject to concurrent exposures, bias due to confounding, and exposure misclassification than human populations. Therefore, we invest...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید