Impacts of a post-transport/pre-processing rest period on the growth performance, anthelmintic efficacy, and serum metabolite changes in cattle entering a feed yard.

A total of 80 crossbred, high-risk heifers (initially 250 ± 4.2 kg BW), were transported from an Oklahoma City, Oklahoma sale barn to the Kansas State University Beef Cattle Research Center. Cattle were unloaded and randomly placed into one of four receiving pens and provided ad libitum hay and water.

Effect of post-insemination progesterone supplementation on pregnancy rate in dairy cows.

Progesterone plays an important role in maintenance of pregnancy. It is hypothesized that insufficient progesterone early in pregnancy may result in embryonic loss, and that supplemental progesterone would decrease pregnancy loss in dairy cows. In Experiment 1, 84 cows and 16 heifers from a single dairy operation were selected randomly.

Effect of feeding flax or linseed meal on progesterone clearance rate in ovariectomized ewes.

Ovariectomized ewes (n=22; 68.76+/-2.34 kg initial body weight; 2.

Effect of certified health programs on the sale price of beef calves marketed through a livestock videotape auction service from 1995 through 2005.

Objective: To quantify effects of certified health programs on the sale price of beef calves sold through a livestock videotape auction service.

Design: Longitudinal study.

Sample Population: 26,502 lots representing 3,205,192 beef calves sold through a livestock videotape auction service between 1995 and 2005.

Persistent bovine viral diarrhoea virus infection in US beef herds.

In the summer of 1996, we screened 18,931 calves in 128 beef herds located in five US states for persistent bovine viral diarrhea virus (BVDV) infection. Of these, 76 herds were randomly selected from the client database of collaborating veterinary practices, and 52 herds were suspected by the collaborating veterinarians to have BVDV infection based on history or clinical signs. Serum was obtained from each calf in the cooperating herds prior to 4 months of age and tested for the presence of BVDV by microtiter virus isolation.