scholarly journals An Economic Comparison of Four Culling Decision Rules for Reproductive Failure in United States Dairy Herds Using DairyORACLE

1987 ◽  
Vol 70 (6) ◽  
pp. 1274-1280 ◽  
Author(s):  
W.E. Marsh ◽  
A.A. Dijkhuizen ◽  
R.S. Morris
2017 ◽  
Vol 100 (11) ◽  
pp. 9298-9310 ◽  
Author(s):  
Karen L. DeLong ◽  
Dayton M. Lambert ◽  
Susan Schexnayder ◽  
Peter Krawczel ◽  
Mark Fly ◽  
...  

2021 ◽  
pp. 112-133
Author(s):  
Alasdair R. Young

This chapter presents the EU’s responses with respect to three closely related policies: the approval of genetically modified (GM) crops for sale and (separately) for cultivation and efforts to lift member state bans on EU-approved GM varieties. These most similar cases differ in outcome; with the EU resuming approvals for sale (a change sufficient to placate Argentina and Canada, but not the United States), but not for cultivation and failing to address member state bans despite very permissive decision rules. In these cases, no tariffs were threatened and there was no exporter mobilization. Commission trade officials did push to accelerate approvals. The Commission, which was more favorably disposed toward biotechnology than most of the member states, was able, with the help of very a permissive decision rule, to overcome opposition to approvals for sale, but not for cultivation, reflecting greater concern among regulators about the environmental impacts of GM cultivation than about the safety of GM varieties. The member state governments also balked at forcing their peers to change their policies. There is little evidence that the WTO’s adverse ruling affected any of the protagonists’ preferences.


2009 ◽  
Vol 92 (8) ◽  
pp. 3766-3774 ◽  
Author(s):  
K.J. Cummings ◽  
L.D. Warnick ◽  
K.A. Alexander ◽  
C.J. Cripps ◽  
Y.T. Gröhn ◽  
...  

2013 ◽  
Vol 108 (2-3) ◽  
pp. 234-238 ◽  
Author(s):  
J.E. Lombard ◽  
I.A. Gardner ◽  
S.R. Jafarzadeh ◽  
C.P. Fossler ◽  
B. Harris ◽  
...  

2017 ◽  
Vol 29 (5) ◽  
pp. 704-706 ◽  
Author(s):  
Fernando V. Bauermann ◽  
Julia F. Ridpath ◽  
David A. Dargatz

Infection with bovine leukemia virus (BLV) results in economic loss because of reduced productivity, especially reduced milk production, and early culling. In the United States, studies in 1996, 1999, and 2007 showed BLV infection to be widespread, especially in dairy herds. We updated information herein on BLV seroprevalence in the United States, using samples submitted for testing and found negative for antibodies for Brucella by the Kentucky Eastern Regional Federal Brucellosis Laboratory. From October 2014 through August 2015, 2,000 samples from all regions of the contiguous United States were selected and tested for BLV antibodies by enzyme-linked immunosorbent assay. The overall percentage of samples positive for BLV antibody was 38.6%. Based on the animal’s origin, the percent positive by region ranged from 32.5% (Mountain West region) to 54.3% (Northeast region; p < 0.05). The positive rate for slaughter plants that processed mainly dairy animals (dairy plants; 47.6%) was higher than the positive rate at slaughter plants that processed mainly beef animals (beef plants; 33.6%; p < 0.05). The results suggest that BLV infection remains widespread in all regions of the United States and that rates may differ between beef and dairy cattle.


CJEM ◽  
2012 ◽  
Vol 14 (02) ◽  
pp. 83-89 ◽  
Author(s):  
Jeffrey J. Perry ◽  
Reena Goindi ◽  
Cheryl Symington ◽  
Jamie Brehaut ◽  
Monica Taljaard ◽  
...  

ABSTRACT Objective: There are currently no widely used guidelines to determine which older patients with acute respiratory conditions require hospital admission. This study assessed the need for clinical decision rules to help determine whether hospital admission is required for patients over 50 years for three common respiratory conditions: chronic obstructive pulmonary disease (COPD), heart failure (HF), and community-acquired pneumonia (CAP). Design: Postal survey. Setting: Emergency physicians (EPs) from the United States, Canada, and Australasia. Participants: A random sample of EPs from the United States, Canada, and Australasia. Interventions: A modified Dillman technique with a prenotification letter and up to three postal surveys. Main Outcomes: EP opinions regarding the need for and willingness to use clinical decision rules for emergency department (ED) patients over 50 years with COPD, HF, or CAP to predict hospital admission. We assessed the required sensitivity of each rule for return ED visit or death within 14 days. Results: A total of 801 responses from 1,493 surveys were received, with response rates of 55%, 60%, and 46% for Australasia, Canada, and the United States, respectively. Over 90% of EPs reported that they would consider using clinical decision rules for HF, CAP, and COPD. The median required sensitivity for death within 14 days was 97 to 98% for all conditions. Conclusions: EPs are likely to adopt highly sensitive clinical decision rules to predict the need for hospital admission for patients over 50 years with COPD, HF, or CAP.


2015 ◽  
Vol 98 (11) ◽  
pp. 7650-7665 ◽  
Author(s):  
R.L. Schewe ◽  
J. Kayitsinga ◽  
G.A. Contreras ◽  
C. Odom ◽  
W.A. Coats ◽  
...  

1979 ◽  
Vol 42 (5) ◽  
pp. 448-450
Author(s):  
FRANCIS J. DRAZEK

Brucellosis continues to be a very devastating disease in the United States and throughout the world. In dairy herds, spread of the disease often results in severe milk losses due to the necessary slaughter of infected animals. Many herds have been depopulated because herd owners have not followed management recommendations to control the spread of infection. Undulant fever is a frequent occurrence in farm families where herds are infected. Increased movement of cattle, including importation of animals, has contributed to its spread. Prevention, control, and eradication have been impeded by present housing and management practices. The general apathy on the part of the owner in not having herd additions blood-tested for brucellosis before entry into the herd is also an important contributing factor.


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