Evaluation of subclinical laminitis in a dairy herd and observations on associated nutritional and management factors

1991 ◽  
Vol 128 (1) ◽  
pp. 11-17 ◽  
Author(s):  
P. Greenough ◽  
J. Vermunt
1980 ◽  
Vol 60 (2) ◽  
pp. 495-502 ◽  
Author(s):  
J. S. T. BOWMAN ◽  
J. E. MOXLEY ◽  
B. W. KENNEDY ◽  
B. R. DOWNEY

A study, based on a series of three questionnaires covering calf management, mastitis control and land and crop management, was conducted from 1975 to 1977 on a random sample of 640 dairy farms on the Dairy Herd Analysis Service (DHAS). Information on dairy cow nutrition, farm production efficiency and farm productivity, as measured by herd average production of 4% fat-corrected milk (4% FCM) and income overfeed costs, was obtained from the 1975–76 DHAS annual data files for these farms. Analysis of the complete information on all factors concerned was done on 216 farms. In a multiple regression analysis, 37 farm management factors accounted for 79.9 and 69.5% of the variation in herd average production and income over feed costs, respectively. Levels of meal and succulent (silage) feeding accounted for the largest amount of the variation in production and income. Significant simple correlation coefficients indicated that the land and crop management factors had an important influence on herd nutrition.


2005 ◽  
Vol 133 (1) ◽  
pp. 91-100 ◽  
Author(s):  
Johannes Charlier ◽  
Edwin Claerebout ◽  
Etienne De Mûelenaere ◽  
Jozef Vercruysse

Author(s):  
A H Poole ◽  
Susan J Mabey

Checkmate is a herd fertility monitoring service based on information recorded on National Milk Records (NMR) operated by the Milk Marketing Board. The aims of Checkmate are:To provide a regular review and analysis on a herd basis of overall and monthly fertility results.To breakdown the calving interval into its components of interval from calving to first service, interservice intervals and service success.To provide veterinary surgeons with information on which to base advice and treatments and the means of evaluating past treatments.In the year ending May 1985 322 herds have subscribed to Checkmate. The whole sample has been analysed and also two sub-samples, the top and bottom 10 per cent, selected by the days from calving to assumed conception. As there is no pregnancy diagnosis information on NMR conception Is assumed if no re-service date is recorded within 60 days of a service.


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

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

Author(s):  
I. F. Gorlov ◽  
A. A. Mosolov ◽  
G. V. Komlatskiy ◽  
M. A. Nesterenko ◽  
K. D. Nimbona ◽  
...  

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.


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