Results 111 to 120 of about 658,146 (392)
A scoring system with 1 to 5 scale was devised to measure body condition of dairy cows at any point during the lactation cycle. Cows were scored on appearance and palpation of back and hind quarters only.
E. Wildman+5 more
semanticscholar +1 more source
The effect of heat waves on dairy cow mortality.
This study investigated the mortality of dairy cows during heat waves. Mortality data (46,610 cases) referred to dairy cows older than 24mo that died on a farm from all causes from May 1 to September 30 during a 6-yr period (2002-2007). Weather data were
A. Vitali+7 more
semanticscholar +1 more source
Abstract BACKGROUND As the agro‐industry produces considerable amounts of by‐products globally, it is acknowledged that there is a need to address the environmental issues related to their disposal and the resource competition between food for humans and feed for animals.
Benchu Xue+5 more
wiley +1 more source
Herd factors associated with dairy cow mortality.
Summary studies of dairy cow removal indicate increasing levels of mortality over the past several decades. This poses a serious problem for the US dairy industry.
Craig S. McConnel+4 more
semanticscholar +1 more source
A micellar casein‐alginate blend is wet‐spun into fibers using a calcium‐rich coagulation bath. Fibers with different levels of casein are dried and tested. Swelling tests showed increased stability in decalcifying media with micellar casein. Mechanical properties remained largely unchanged, except after treatment with citric acid, where the breaking ...
Novin Darvishsefat, Ronald Gebhardt
wiley +1 more source
Diverse Antibiotic Resistance Genes in Dairy Cow Manure
Application of manure from antibiotic-treated animals to crops facilitates the dissemination of antibiotic resistance determinants into the environment.
F. Wichmann+3 more
semanticscholar +1 more source
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo+5 more
wiley +1 more source
Physical and financial characteristics of high input and low input dairy farms in New Zealand : research project for thesis, to be presented in partial fulfilment of the requirements for the degree of Master of Science (M.Sc.) in Animal Science, Institute of Veterinary Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand [PDF]
In recent years the use of supplements in New Zealand dairy farms has increased, but there is little information about the way in which this extra feed has influenced the dairy system.
Silva-Villacorta, David
core
Breeding the dairy cow of the future: what do we need?
Genetics is responsible for approximately half the observed changes in animal performance in well structured breeding programs. Key characteristics of the dairy cow of the future include (1) production of a large quantity of high-value output (i.e.
D. Berry
semanticscholar +1 more source
Characterization of Dutch dairy farms using sensor systems for cow management.
To improve cow management in large dairy herds, sensors have been developed that can measure physiological, behavioral, and production indicators on individual cows. Recently, the number of dairy farms using sensor systems has increased. It is not known,
W. Steeneveld, H. Hogeveen, H. Hogeveen
semanticscholar +1 more source