We investigated the concentration of the bacterial endotoxin lipopolysaccharide (LPS) in the blood, ovarian follicular fluid and uterine fluid of a clinical case of bovine metritis. A 2-year-old lactating Holstein cow exhibited continuous fever >39.5°C for more than 2 weeks after normal calving. The cow produced a fetid, watery, red-brown uterine discharge from the vagina and was diagnosed with...

Grazing dairy cows milked by an automatic system (AS) experienced mild heat stress (HS) periods twice during the summer. The daily temperature humidity index (THI) during these periods were higher than 72. Milk production, as well as milking frequency, rumination time and milk fat to protein ratio (F/P) during these periods were compared with adjacent periods with mean THI of 61. The daily milk...

To determine the effects of cow biological type on colour stability of ground beef, M. semimembranosus from beef-type (BSM) and dairy-type (DSM) cows was obtained 5d postmortem. Three blends (100% BSM, 50% BSM+50% DSM, 100% DSM) were adjusted to 90% and 80% lean points using either young beef trim (YBT) or beef cow trim (BCT), then packaged in high oxygen (High-O(2); 80% O(2)) modified atmosphe...

A year-round grazing system for springand fall-calving cows was developed to compare animal production and performance, hay production and feeding, winter forage composition changes, and summer pasture yield and nutrient composition to that from a conventional, or minimal land system. Systems compared forage from smooth bromegrass-orchardgrass-birdsfoot trefoil pastures for both systems in the ...

The proportions of organic feed and roughage in the feed ration for organic dairy cows have to reach 100 and 60%, respectively, in 2005. The aim of this study was to elucidate the long-term effects of reducing or omitting concentrate supplementation to high genetic merit dairy cows on a basal ad libitum diet of clover-grass (silage and grazing). Three concentrate levels, N, L and L1 (38, 0 and ...

Objective: The pathogenesis of cerebral white matter lesion (WML) may be associated with chronic cerebral hypoperfusion. Incomplete circle of Willis (CoW) and cerebral artery stenosis (CAS) may contribute to chronic cerebral hypoperfusion. This study aimed to investigate whether incomplete CoW and CAS were associated with WML by a prospective study. Methods: 102 patients were enrolled in this s...

Background IgE mediated cow’s milk allergy (CMA) is a frequent disease in pediatric population, and challenge tests are considered gold standard in its diagnosis, although its use is limited in clinical practice. An appropriated anamnesis and laboratorial analysis are the most frequent and feasible used tools. The aim of this study was to evaluate the role of these practices in IgE mediated CMA...

N. P. Danz ([email protected]), Dept of Natural Sciences, Univ. of Wisconsin-Superior, Belknap and Catlin, Superior, WI 54880, USA, and Graduate Program in Natural Resources Science and Management, Univ. of Minnesota, St. Paul, MN 55108, USA. P. B. Reich and L. E. Frelich, Dept of Forest Resources, Univ. of Minnesota, 115 Green Hall, 1530 Cleveland Ave. N., St. Paul, MN 55108 6112, USA. G. J. N...

BACKGROUND The downer cow syndrome (DCS) is a challenging health issue in the dairy industry. No cow-side test is available to provide an accurate prognosis for DCS cases in farm settings. HYPOTHESIS/OBJECTIVES Local or systemic hypoperfusion and myocardial lesions lead to an increase in blood concentration of biomarkers cardiac troponin I (cTnI) and L-lactate. The objective was to determine ...

Cow size has been suggested to be an important consideration for selecting cattle to match their production environment. Over the last several decades, the trend in genetic selection for maximum growth has led to gradual increases in beef cow size. An unrelated trend during this same period in the western United States has been an increase in temperature, drought frequency, and drought severity...