Heifers with expected increased risk of bovine respiratory disease (BRD; n = 360; initial BW = 241.3 +/- 16.6 kg) were assembled at a Kentucky order-buyer facility and delivered to Stillwater, OK, in September 2007 to determine the effects of clinical BRD observed during preconditioning on subsequent feedlot performance, carcass characteristics, and meat attributes. During a 63-d preconditionin...

The goal of this study was to determine the clinical and economic impact of using tulathromycin as first line treatment for bovine respiratory disease (BRD) compared with other commonly used antimicrobials. Two decision trees were developed simulating the consequences of treating cattle at high risk of developing BRD [control model (CM)] or cattle with first clinical BRD episode [treatment mode...

The objective this study was to evaluate the effects of incidence of bovine respiratory disease (BRD) and overall incidence of pathogenic diseases (IPD) on carcass traits. Two independent populations were used. The first population included crossbred steers (GPE7; n = 642) derived from sires of 7 Bos taurus breeds: Angus, Charolais, Gelbvieh, Hereford, Limousin, Red Angus, and Simmental. The se...

There are numerous different bottleneck detection methods both in academia and in industry. However, most do not take the shifting of bottlenecks into account. This paper compares a number of methods, namely methods based on cycle times and utilizations, waiting times and queue lengths, the arrow method, the turning point method, the active period method, and the bottleneck walk. All methods ar...

Abstract Bovine respiratory disease (BRD) detection is a major challenge in feedlot cattle management. In pilot study, two dogs were trained using sets of three samples to identify nasal swabs from that developed signs BRD after arrival. Cattle arrived at the four lots and included mixture bulls (n=306) steers (n=89). final stage training, Dog A accuracy was 0.82 (95% CI: 0.79-0.85) B 0.63 0.60...

A global definition of bottleneck degree is first proposed by introducing an exponential function, the value of bottleneck degree for each working station can be obtained through real time calculation and compared, based on which a new method of exponential dynamic bottleneck detection (EDBD) is presented. This method provides an efficient means for bottleneck detection. Experiments under light...

The histone acetyl transferases CREB-binding protein (CBP) and its paralog p300 play a critical role in numerous cellular processes. Dysregulation of their catalytic activity is associated with several human diseases. Previous work has elucidated the regulatory mechanisms of p300 acetyltransferase activity, but it is not known whether CBP activity is controlled similarly. Here, we present the c...

This paper endeavors to present a scheme to detect and estimate bottleneck bandwidth along the path in the Internet. We have participated in the RIPE NCC’s TTM project to perform one-way delay (OWD) and loss measurement from a host in our laboratory to other hosts in Europe and USA. TTM is an active measurement system, which has implemented the IPPM one-way delay (RFC2679) and one-way loss metr...

BACKGROUND Little is known on the effects of common calf diseases on mortality and carcass traits in the white veal industry (special-fed veal), a highly integrated production system, currently criticized for the intensive pro- and metaphylactic use of antimicrobials. The objective of the present study was to determine the impact of bovine respiratory disease (BRD), diarrhea, arthritis and otit...

Figure 1. Risk factors for bovine respiratory disease. Assessing the cost of each individual case is very difficult as a large proportion of the costs associated with BRD are hidden. The direct cost of dead animals, their disposal, medicines, extra labour and veterinary input are easy to quantify, but producers often turn a blind eye to the impact on liveweight gain, feed conversion efficiency ...