Cattle, Capital, Colonization
نویسندگان
چکیده
منابع مشابه
Colonization of cattle intestines by Campylobacter jejuni and Campylobacter lanienae.
The location and abundance of Campylobacter jejuni and Campylobacter lanienae in the intestines of beef cattle were investigated using real-time quantitative PCR in two studies. In an initial study, digesta and tissue samples were obtained along the digestive tract of two beef steers known to shed C. jejuni and C. lanienae (steers A and B). At the time of slaughter, steer B weighed 540 kg, comp...
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This paper builds a dynamic forward-looking model describing the approximate ten-year cattle cycle. The theoretical model improves on existing models by (1) allowing cow-calf operators to make investment decisions on both the cow and calf margins, (2) formally recognizing the age distribution of the capital stock, and (3) considering a mixed scheme of rational and naive expectations. The model....
متن کاملCattle Cycles, Heterogeneous Expectations and the Age Distribution of Capital
This paper builds a dynamic forward-looking model describing the approximate ten-year cattle cycle. The theoretical model improves on existing models by (1) keeping track of the age distribution of the capital stock, (2) allowing for heterogeneous expectations, and (3) recognizing that cow-calf operators make investment decisions on both the cow and calf margins. The structural parameters are e...
متن کاملResponses of cattle to gastrointestinal colonization by Escherichia coli O157:H7.
Recent research has established that the terminal rectum is the predominant colonization site of enterohemorrhagic Escherichia coli O157:H7 in cattle. The main aim of the present work was to investigate pathological changes and associated immune responses at this site in animals colonized with E. coli O157:H7. Tissue and gastrointestinal samples from a total of 22 weaned Holstein-cross calves c...
متن کاملDietary interactions and interventions affecting Escherichia coli O157 colonization and shedding in cattle.
Escherichia coli O157 is an important foodborne pathogen affecting human health and the beef cattle industry. Contamination of carcasses at slaughter is correlated to the prevalence of E. coli O157 in cattle feces. Many associations have been made between dietary factors and E. coli O157 prevalence in cattle feces. Preharvest interventions, such as diet management, could reduce the fecal preval...
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ژورنال
عنوان ژورنال: Current Anthropology
سال: 2019
ISSN: 0011-3204,1537-5382
DOI: 10.1086/702788