scholarly journals Control of Salmonella Dublin in a bovine dairy herd

2021 ◽  
Author(s):  
Emily Kent ◽  
Chika Okafor ◽  
Marc Caldwell ◽  
Tate Walker ◽  
Brian Whitlock ◽  
...  
Keyword(s):  
Dairy Herd ◽  
Salmonella Dublin

scholarly journals The epidemiology of Salmonella dublin infection in a dairy herd: II. Serology

1974 ◽  
Vol 72 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G. H. K. Lawson ◽  
E. A. McPherson ◽  
P. Wooding
Keyword(s):  
Complement Fixation ◽  
Dairy Herd ◽  
Serological Tests ◽  
Salmonella Dublin

SUMMARYA number of serological tests were evaluated in a study of Salmonella dublin infection in a dairy herd. None of the tests used detected either of the two carrier animals from which Salmonella dublin was isolated at slaughter 7 and 17 months after the herd infection. The complement fixation tests used proved to be a better guide to the presence of recent herd infection than the conventional ‘0’ or ‘H’ agglutination tests.

scholarly journals The epidemiology of Salmonella dublin infection in a dairy herd: I. Excretion and persistence of the organism

1974 ◽  
Vol 72 (3) ◽  
pp. 311-328 ◽  
Author(s):  
G. H. K. Lawson ◽  
E. A. McPherson ◽  
A. H. Laing ◽  
P. Wooding
Keyword(s):  
Gall Bladder ◽  
Neonatal Period ◽  
Dairy Herd ◽  
The Other ◽  
General Context ◽  
Salmonella Dublin ◽  
Source Of Infection

SUMMARYThis paper describes the epidemiologically relevant events that took place in a dairy herd infected by Salmonella dublin. The evidence presented indicates that it may be possible to eliminate infection from the farm and that residual infection or persistent excretion are uncommon. In two animals infection persisted, in one instance in the tonsil and in the other in the gall bladder. In this latter case the infection remained from the neonatal period until adulthood. It is possible that both these animals are relevant in a more general context and are indicative of the source of infection in outbreaks in which the origin of infection cannot be deter-mined by more routine examinations.

A three-year study of Salmonella dublin infection in a closed dairy herd

1989 ◽  
Vol 124 (20) ◽  
pp. 532-537 ◽  
Author(s):  
C. Wray ◽  
Q. Wadsworth ◽  
D. Richards ◽  
J. Morgan
Keyword(s):  
Dairy Herd ◽  
Salmonella Dublin

1266 Association between management practices and dairy herd performance

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 611-611
Author(s):  
P. Turiello ◽  
J. M. Piñeiro ◽  
G. M. Schuenemann
Keyword(s):  
Management Practices ◽  
Dairy Herd

Freshening Date Changes of Cows in Iowa Dairy Herd Improvement Associations

1943 ◽  
Vol 2 (2) ◽  
pp. 112-117 ◽  
Author(s):  
C. Y. Cannon ◽  
E. N. Hansen
Keyword(s):  
Dairy Herd

ECONOMIC PERSPECTIVES OF BIOTECHNOLOGIES USING IN ANIMAL FARMING

1970 ◽  
pp. 57-60
Author(s):  
I. F. Gorlov ◽  
A. A. Mosolov ◽  
G. V. Komlatskiy ◽  
M. A. Nesterenko ◽  
K. D. Nimbona ◽  
...  
Keyword(s):  
Embryo Transfer ◽  
Economic Effect ◽  
Dairy Herd ◽  
State Level ◽  
Modern Level ◽  
Economic Perspectives ◽  
The Cost ◽  
Short Time

The article presents materials on the study of the possibility of reproduction and increase in the herd of highly productive cows through the use of embryo transplantation technology. The classical (in vivo) and more modern, developing (in vitro) methods of embryotransfer, their positive and negative sides are considered in detail. The possibility of accelerating the breeding process by using the method of transplantation, in which from one cow can be obtained from 10 to 100 calves, which will allow for 4-5 years, almost any herd (of any size and breed) with the help of biotechnology to turn into a cattle-breeding enterprise of the most modern level. At the same time, heifers obtained from unproductive cows can be used as "surrogate" mothers who are transplanted with the best donor embryos, which allows to obtain a full-fledged offspring adapted to local environmental conditions. A detailed scheme of obtaining, evaluation, storage, as well as the cost and economic effect of embryo transplantation was calculated, the market was evaluated, the required annual volume of transplants and the number of donor cows for large livestock farms were determined. As a positive example of "Scientific-production enterprise "Centre of biotechnology and embryo transfer" in 2014, implemented a project for accelerated replacement and genetic improvement of the dairy herd, engraftment averaged 57-69%, and the economic effect of the enterprise from getting a single animal by the method of embryo transfer, compared with imports of similar close in quality, ranged from 60 to 100 thousand rubles on his head. It is shown that it is necessary to organize at the state level a developed service for embryo transplantation to reduce the cost of embryo transfer and the possibility of creating in a short time in the country's own highly productive breeding nucleus of dairy and beef cattle, which will reduce, and in the future completely eliminate, import dependence on cattle products.

scholarly journals Temporal associations between low body condition, lameness and milk yield in a UK dairy herd

2014 ◽  
Vol 113 (1) ◽  
pp. 63-71 ◽  
Author(s):  
L.E. Green ◽  
J.N. Huxley ◽  
C. Banks ◽  
M.J. Green
Keyword(s):  
Milk Yield ◽  
Body Condition ◽  
Dairy Herd

scholarly journals Beacon in Information System as Way of Supporting Identification of Cattle Behavior

2021 ◽  
Vol 11 (3) ◽  
pp. 1062
Author(s):  
Krzysztof Koszela ◽  
Wojciech Mueller ◽  
Jakub Otrząsek ◽  
Mateusz Łukomski ◽  
Sebastian Kujawa
Keyword(s):  
Information System ◽  
Information Technologies ◽  
Physiological State ◽  
Research Work ◽  
Dairy Herd ◽  
Weather Forecast ◽  
Well Being ◽  
Use Of Data ◽  
New Information ◽  
Conducting Research

The paper concentrates on researching the possibilities of using modern information technologies in animal production in order to monitor and identify behavior and well-being of cows. Having in mind the challenges related to managing dairy herds, and economic pressure put on breeders (as well as the broadly defined well-being of animals), an endeavor was made to create a new method, which would be competitive in comparison with the existing solutions. The proposed method of collecting data and data processing with beacon devices as well as data warehouse, allows—according to the authors—a more complete identification of behaviors and physiological condition of a dairy herd. It is also worth pointing out that this method is competitive in terms of price. By virtue of the multitude of data that were collected, a decision was made to resign from processing data on a local computer and use a cloud compute engine instead. The presented information system creates a sequence of components, which were subject to verification both on the level of creating and conducting research. Research results that were received were then compared with knowledge presented in the literature. A vital element of validation of the aforementioned methodology was comparing results that were achieved in the course of research work with the system making use of pedometer. The aim of the authors was to develop a new information technology solution, as well as a method based on beacons, which are rather universal devices, with the use of data warehouses, allowing the identification of behavior and physiological state of milk cattle, the method which would be competitive in comparison with the existing solutions, especially in terms of price. In the proposed solution, both information coming from microcomputers and weather forecast data coming from weather forecast stations, which make the above identification easy, were used as data sources.

114 What Is the Impact of Dairy Influence Cattle on the Traditional Beef Industry Structure?

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 38-39
Author(s):  
Bradley J Johnson ◽  
Luke Fuerniss
Keyword(s):  
Dairy Cows ◽  
Dairy Herd ◽  
The United States ◽  
Reproductive Technologies ◽  
Industry Structure ◽  
Data Availability ◽  
Beef Production ◽  
Feed Conversion ◽  
Beef Industry ◽  
The Impact

Abstract The U.S. cow inventory includes approximately 31 million beef cows and 9 million dairy cows, so flow of cattle from dairies into beef production influences the traditional beef industry structure. Dairy-influenced cattle have historically entered the beef supply chain as cull cows and calf-fed Holstein steers. Culled dairy cows account for approximately half of the cows harvested in the United States annually. Fed steers and heifers of dairy influence are estimated to account for 15% of annual steer and heifer slaughter. Advancements in data availability, genomics, and reproductive technologies have enabled more precise selection of dairy replacement heifers and more pregnancies to be allocated to a terminal sire. Recently, the use of beef semen to breed dairy cows that are not desirable for producing replacement heifers has become more widespread. Beef-on-dairy calves are often moved to calf ranches shortly after birth where they are weaned and grown before transitioning to traditional grow yards or feedlots. In comparison to traditional range beef production, calves of dairy origin are weaned at a younger age, have more restricted mobility early in life, and are fed a delivered ration for a greater number of days. While carcasses of dairy-originated fed cattle excel in subcutaneous leanness and marbling, calves originating from dairies typically experience greater morbidity, poorer feed conversion, and poorer dressed yields compared to native fed cattle. Future opportunities to optimize beef production from the dairy herd include refining sire selection to consistently produce high quality calves, reducing variation in calfhood management, and identifying optimal nutrition and growth technology programs for calves from dairies.

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