نتایج جستجو برای: dairy animals
تعداد نتایج: 255097 فیلتر نتایج به سال:
INTRODUCTION Veterinary care of cows on organic dairy farms may be influenced by the USDA regulations that govern organic management standards (USDA, 2011). U.S. organic standards contain a unique and rigorous prohibition against use of most conventional allopathic veterinary treatments (USDA, 2011). There are no FDA approved antimicrobials on the USDA list of approved organic treatments and FD...
The economic impact of an outbreak of foot and mouth disease that took place during 2002 was assessed in dairy farms of Khartoum state, Sudan. A total of 11 farms (8 cooperative and 3 privately owned) of mostly crossbred Friesian X indigenous cattle were investigated. The total number of the animals in these farms were 1160 of which 715 were adult and 445 were calves. The statistical analysis w...
The concept of Precision Dairy Farming is, to a crucial degree, based on data collection related to individual animals. In dairy farming, the amount of data per individual animal will increase. Thus, a particular meaning has the use of this data through decision support systems. A particular meaning has the use of this data through decision support system In the present article, the chosen exam...
Smallholder dairy production represents a promising income generating activity for poor farmers in the developing world. Because of the perishable nature of milk, marketing arrangements for collection, distribution and sale are important for enhanced livelihoods in the smallholder dairy sector. In this study we examined the relationship between market quality and basic feeding and breeding prac...
BACKGROUND Bovine respiratory disease (BRD) is 1 of the 2 most important causes of morbidity and mortality in dairy calves. Surprisingly, field data are scant concerning the prevalence of respiratory pathogens involved in BRD in preweaned dairy calves, especially in small herds. OBJECTIVES To identify the main respiratory pathogens isolated from calves in Québec dairy herds with a high incide...
Enterococci have controversial status due to their emerging role in nosocomial infections and transmission of antibiotic resistance genes, while some enterococci strains are used as probiotics for humans and animals and starter cultures in dairy industry. In order to improve our understanding of factors involved in the safe use of enterococci as potential probiotics, the antibiotic susceptibili...
It is well documented that global warming is unequivocal. Dairy production systems are considered as important sources of greenhouse gas emissions; however, little is known about the sensitivity and vulnerability of these production systems themselves to climate warming. This review brings different aspects of dairy cow production in Central Europe into focus, with a holistic approach to emphas...
25 Mycotoxins are toxigenic metabolites of fungi. They occur worldwide and are a potential risk to humans and animals when feeds and cereals are contaminated. Their importance and occurrence have been recognised for over 30 years. Following the eating of contaminated foods and feeds, so called mycotoxicoses are observed in animals. These intoxications should be differentiated from mycoses, whic...
Dairy cattle provide a major benefit to the world through upcycling human inedible feedstuffs into milk and associated dairy products. However, as beneficial this process has become, it is not without potential negatives. are source of greenhouse gases enteric waste fermentation well excreting nitrogen emissions their feces urine. these negative impacts vary widely due how what animals fed. In ...
In the study, 1118 Polish Black and White cows from a dairy herd were examined during a three-year period. In 388 (34.7%) animals no visible oestrus signs were observed until day 60 postpartum. In those cows clinical examinations were performed twice, with a 10 d interval, and blood samples for progesterone analysis were collected simultaneously. Progesterone was measured by RIA. Based on clini...
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