منابع مشابه
Arsenic and metaldehyde toxicosis in a beef herd.
Over a 12-day period, 13 animals in a herd of 110 beef cattle developed ataxia with profound muscle fasciculations progressing to recumbency. Twelve animals (5 adults and 7 calves from 8-10 months of age) died, and 1 cow was euthanized. Hemorrhagic diarrhea occurred in some, but not all, animals. The onset of clinical signs was at least 12 hours after the cattle had gained access to contents of...
متن کاملCullin the Beef Cow Herd
Removing select cattle from a herd (culling) is done to improve herd performance and profitability Production and market conditions influence culling criteria Some cattle are obvious candidates for culling (e g , cows with poor breeding performance or cancer eye), but cattle can and should be culled for reasons that may not be readily observable Simply put, cows are selected for culling based o...
متن کاملCryptosporidium infections in suckler herd beef calves
A study was carried out to investigate how common Cryptosporidium infections are in beef calves in Swedish suckler herds and to explore which species and subtypes that occur. We further aimed at identifying factors associated with shedding of Cryptosporidium oocysts in this type of calf management. The study was conducted in two regions in Sweden and included 30 herds. Faecal samples were colle...
متن کاملUtilization of Heterosis in a Beef Cow Herd
George H. Shull, while working as a corn geneticist at the Cold Spring Harbor Laboratory from 1904 to 1915, observed that when two different pure-bred lines of corn were crossbred the resulting progeny exhibited physical traits superior to those of the parents (Glass, 2010). Shull described the offspring of pure-bred crosses as having increased heartiness, size, fruitfulness, speed of developme...
متن کاملThe effect of subclinical selenium toxicosis on pregnant beef cattle.
A field investigation conducted by the South Dakota Animal Disease Research and Diagnostic Laboratory suggested that subclinical selenium toxicosis in pregnant cows may have contributed to an outbreak of aborted/stillborn calves in a high-selenium region of South Dakota. This study was undertaken to evaluate the relationship between abortion and subclinical selenium toxicosis in the dam and to ...
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ژورنال
عنوان ژورنال: Journal of Veterinary Diagnostic Investigation
سال: 1998
ISSN: 1040-6387,1943-4936
DOI: 10.1177/104063879801000309