Virus may be the cause of mad cow
Jia-Rui Chong, LA Times
Mad cow disease and other related brain disorders may be caused by a virus and not the weird, misshapen proteins, known as prions, that scientists think are responsible, according to a study released Monday.
Researchers reported that they found virus-like particles in mouse nerve cells infected with two brain-wasting diseases similar to mad cow disease, but found no traces of the particles in uninfected cells.
The January 31, issue #523, of the Ohio BEEF Cattle letter is now posted to the web at: http://fairfield.osu.edu/ag/beef/beefJany31.html
With the present arctic conditions we’re experiencing, one of the primary topics of discussion for cattlemen as calving season begins is how best to manage hypothermia in newborns. Glenn Selk offers some thoughts.
* Animal Identification, a Reality or Simply a Perception
* Re-warming Methods for Cold-stressed Newborn Calves
* Dried Distiller’s Grains Can Help Produce More Beef
* Forage Focus: Ohio Forage and Grassland Council Conference
* Feedlot Inventories Continue to Shrink
* Weekly Roberts Agricultural Commodity Market Report
Cattle Update: Planning A Carcass Ultrasound Session
In recent years, beef breed associations have seen a dramatic increase in the use of ultrasound to evaluate carcass characteristics. With ultrasound technology, we are able to collect carcass data from animals without harvesting them. Thus, data are available from a much larger population of animals than traditional harvest carcass data. Breeding bulls and replacement heifers, which make up a very large portion of seedstock calf crops, can all have data collected and sent to breed associations for use in EPD calculations.
The 3 stages of Parturition
Dr. Glen Selk, Oklahoma State University
The first stage of parturition is dilation of the cervix. The normal cervix is tightly closed right up until the cervical plug is completely dissolved. In stage 1 cervical dilation begins some 4 to 24 hours before the completion of parturition. During this time the “progesterone block” is no longer present and the uterine muscles are becoming more sensitive to all factors that increase the rate and strength of contractions. At the beginning, the contractile forces primarily influence the relaxation of the cervix but uterine muscular activity is still rather quiet. Stage 1 is likely to go completely unnoticed, but there may be some behavioral differences such as isolation or discomfort.
SDSU Extension plans beef cow drylot meetings for February
Tri State neighbor
BROOKINGS, S.D. – SDSU Cooperative Extension is hosting beef cow drylot alternative meetings at six locations in northern South Dakota in February.
Here’s a look at dates and locations.
Feb. 12: 9 a.m. in the east half of the Brown County Courthouse basement in Aberdeen; 4 p.m. in the Beadle County Extension Center Meeting Room in Huron.
Bull selection and forage production clinic planned
Tri State Neighbor
The Bennett County Extension Service will be hosting a Bull Selection and Forage Production Clinic Feb. 8 at the Library Community Room in Martin, S.D.
Cost is $10, which will cover breaks, lunch and handouts. The event will begin with the Bull Selection Clinic from 10:30 a.m. to noon. Julie Walker, South Dakota State University Extension beef specialist and Adele Gelvin, Extension livestock educator, will cover points to consider when selecting bulls, including nutrition, disease control, fertility and interpreting EPDs.
Current Status Of Applied Reproductive Technologies For Beef Cattle
Cattle producers may be aware of numerous methods to utilize reproductive management to enhance the productivity of their operations. Quite simply, the use of a bull to breed cows to obtain pregnancies tends to remain the most widely exploited form of reproductive management used. However, to become more efficient producers manipulate the breeding season by inserting and removing bulls at predetermined times to ensure that calves are born at the ideal time for each producer. The breeding and calving seasons are dictated by each producer to ensure that cows calve to optimize production efficiency in each operation. Many producers are now familiar with more advanced methods to enhance reproductive efficiency which may further add potential economic efficiency to cattle operations. Artificial insemination, estrous synchronization, embryo transfer, in vitro fertilization, sexed-semen, and cloning are all procedures that have already influenced the beef industry or will influence the industry in the near future.