نتایج جستجو برای: dairy farms

تعداد نتایج: 64468  

Journal: :Applied and environmental microbiology 2012
A de Bruin R Q J van der Plaats L de Heer R Paauwe B Schimmer P Vellema B J van Rotterdam Y T H P van Duynhoven

During large Q fever outbreaks in the Netherlands between 2007 and 2010, dairy goat farms were implicated as the primary source of human Q fever. The transmission of Coxiella burnetii to humans is thought to occur primarily via aerosols, although available data on C. burnetii in aerosols and other environmental matrices are limited. During the outbreak of 2009, 19 dairy goat farms and one dairy...

2003
Loren W. Tauer Ashok K. Mishra

The cost of milk production by farm size was decomposed into frontier and efficiency components with a stochastic cost curve using data on 755 USA dairy farms from the year 2000. The estimated frontier function is much flatter than the composite cost curve, and although the frontier cost of production decreases with farm size, that cost reduction is not as pronounced as a cost curve that includ...

2016
Silvia M. R. R. Marton Gisela Lüscher Michael S. Corson Michael Kreuzer Gérard Gaillard

Citation: Marton SMRR, Lüscher G, Corson MS, Kreuzer M and Gaillard G (2016) Collaboration between Mountain and Lowland Farms Decreases Environmental Impacts of Dairy Production: The Case of Swiss Contract Rearing. Front. Environ. Sci. 4:74. doi: 10.3389/fenvs.2016.00074 Collaboration between Mountain and Lowland Farms Decreases Environmental Impacts of Dairy Production: The Case of Swiss Contr...

2015
Mads Ville Markussen Siri Pugesgaard Piotr Oleskowicz-Popiel Jens Ejbye Schmidt Hanne Østergård

Citation: Markussen MV, Pugesgaard S, Oleskowicz-Popiel P, Schmidt JE and Østergård H (2015) Net-Energy Analysis of Integrated Food and Bioenergy Systems Exemplified by a Model of a Self-Sufficient System of Dairy Farms. Front. Energy Res. 3:49. doi: 10.3389/fenrg.2015.00049 net-energy analysis of integrated Food and Bioenergy systems exemplified by a Model of a selfsufficient system of Dairy F...

Journal: :Journal of dairy science 2011
Q Wang E Thompson R Parsons G Rogers D Dunn

A case study of the Central Vermont Public Service Corporation (CVPS) Cow Power program examines the economic feasibility for dairy farms to convert cow manure into electricity via anaerobic methane digestion. The study reviews the mechanism for CVPS, dairy farms, electricity customers, and government agencies to develop and operate the program since 2004, examines the costs and returns for the...

Journal: :Veterinary research 2016
Petra Bandelj Rok Blagus France Briski Olga Frlic Aleksandra Vergles Rataj Maja Rupnik Matjaz Ocepek Modest Vengust

Farm animals have been suggested to play an important role in the epidemiology of Clostridium difficile infection (CDI) in the community. The purpose of this study was to evaluate risk factors associated with C. difficile dissemination in family dairy farms, which are the most common farming model in the European Union. Environmental samples and fecal samples from cows and calves were collected...

2013
ABID A. BURKI MUSHTAQ A. KHAN

This paper provides empirical evidence on the impact on technical inefficiency of smallholder dairy producers when they formally participate in a milk supply chain. Here the stochastic production frontier and technical inefficiency effects model are estimated based on the data gathered from 800 smallholder dairy farms in Pakistan. The results suggest that the technical inefficiency of the parti...

Journal: :Journal of dairy science 2008
A Alvarez J del Corral D Solís J A Pérez

In recent decades, the dairy sector has shown a global tendency toward intensification. This structural change may have significant effects on farm efficiency and, consequently, on the economic results of the farms. The goal of this study was to offer an empirical analysis of the effect of intensification on dairy farming. To do this, we first classified a sample of dairy farms according to the...

2017
Benjamin E. Voelz

A section of the Kansas Dairy Producers' Needs Survey evaluated needs related to education on reproductive management and the most common reproductive management practices used on Kansas dairy farms. Of the 312 surveys mailed to dairy producers, 70 were returned fully completed. Results indicate that producers need education on the topic of reproduction and that reproductive management practice...

2016
Caroline Fenlon Luke O'Grady John Dunnion Laurence Shalloo Stephen Butler Michael Doherty

Reproductive performance has an important effect on economic efficiency in dairy farms with short yearly periods of breeding. The individual factors affecting the outcome of an artificial insemination have been extensively researched in many univariate models. In this study, these factors are analysed in combination to create a comprehensive multivariate model of conception in Irish dairy cows....

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید