Results 21 to 30 of about 90,829 (282)

EFFECT OF DRY PERIOD LENGTH OF FIRST-CALF HEIFERS AND OLDER COWS ON THEIR PERFORMANCE IN THE NEXT PRODUCTION CYCLE [PDF]

Journal of Central European Agriculture, 2013
Analysis was made of the effect of dry period length in first-calf heifers and older cows from the active population of cows in the Pomerania and Kujavia regions on their performance in the next production cycle. The GLM, FREQ and CORR PEARSON procedures
Anna SAWA, Mariusz BOGUCKI, Wojciech NEJA   +2 more
doaj   +1 more source

Estimation of Dairy Cow Survival in the First Three Lactations for Different Culling Reasons Using the Kaplan–Meier Method

Animals, 2022
The aims of the study were: (i) to compare survival curves for cows culled for different reasons over three successive lactations using the Kaplan–Meier estimator; (ii) to determine the effects of breeding documentation parameters on cow survival; (iii ...
Wilhelm Grzesiak, Krzysztof Adamczyk, Daniel Zaborski, Jerzy Wójcik   +3 more
doaj   +1 more source

Disease prevention versus data privacy : using landcover maps to inform spatial epidemic models [PDF]

, 2012
The availability of epidemiological data in the early stages of an outbreak of an infectious disease is vital for modelers to make accurate predictions regarding the likely spread of disease and preferred intervention strategies.
A Estrada-Pena, AA King, CP Jewell, DJ Rogers, E Dion, EF Lambin, I Gudelj, J Swinton, Marcel Salathé, ME Hugh-Jones, Michael J. Tildesley, MJ Keeling, MJ Keeling, MJ Tildesley, MJ Tildesley, MJ Tildesley, MJ Tildesley, NM Ferguson, NM Ferguson, NM Ferguson, NM Taylor, PJ Diggle, PJ Diggle, PR Bessell, R Deardon, RM Fuller, RM Fuller, RS Ostfield, Sadie J. Ryan   +28 more
core   +3 more sources

Reduction in Mortality of Calves with Bovine Respiratory Disease in Detection with Influenza C and D Virus

Animals, 2022
Both influenza C (ICV) and influenza D (IDV) viruses were recently included as bovine respiratory disease (BRD) causes, but their role in BRD has not been evaluated.
Duanghathai Saipinta, Tanittian Panyamongkol, Phongsakorn Chuammitri, Witaya Suriyasathaporn   +3 more
doaj   +1 more source

Modeling highly pathogenic avian influenza transmission in wild birds and poultry in West Bengal, India. [PDF]

, 2013
Wild birds are suspected to have played a role in highly pathogenic avian influenza (HPAI) H5N1 outbreaks in West Bengal. Cluster analysis showed that H5N1 was introduced in West Bengal at least 3 times between 2008 and 2010.
Aly, Sharif S, Bunn, David A, Pande, Satish A, Pandit, Pranav S   +3 more
core   +1 more source

Limiting factors of cows’ productive longevity on the industrial complex

Theoretical and Applied Veterinary Medicine, 2021
The research was carried out in the conditions of a large industrial complex ‟Agro-Soyuz” of the Dnipropetrovsk region for the production of the milk from Holstein cows.
I. S. Pishchan, S. G. Pishchan, L. O. Lytvyschenko, N. O. Kapshuk, H. S. Hutsuliak   +4 more
doaj   +1 more source

Culling Trends on a Hungarian Large Scale Dairy Farm

Scientific Papers Animal Science and Biotechnologies, 2023
Different diseases experienced in dairy farms cause decreased productivity and profitability. When a decision is made regarding culling, age, phases of lactation cycle, milk production, reproduction phase and health stage all have to be taken into ...
Violetta Tóth, Virág Nagypál, Ágnes Süli, Edit Mikó   +3 more
doaj  

Animal-Based Measurements to Assess the Welfare of Dairy Cull Cows during Pre-Slaughter

Animals, 2020
Culling is the departure of cows from the herd as a result of sale, slaughter, health, national regulations, salvage, or death. Cull cows are removed from farms with poor health, production, behavior, or other problems, and during pre-slaughter they are ...
Marlyn H. Romero, Magali Rodríguez-Palomares, Jorge Alberto Sánchez   +2 more
doaj   +1 more source

Observational study on dry period length and its associations with milk production, culling risk, and fertility in Italian dairy farms

Journal of Dairy Science, 2023
: From an initial data set involving 84,189 lactations, this research evaluated the relationship between dry period length (DPL) and milk production, culling risk, and fertility.
M. Guadagnini, P. Amodeo, F. Biscarini, A. Bolli, P. Moroni   +4 more
doaj   +1 more source

Dairy Cow Culling Strategies: Making Economical Culling Decisions

Journal of Dairy Science, 1998
The purpose of this report was to examine important economic elements of culling decisions, to review progress in development of culling decision support systems, and to discern some of the potentially rewarding areas for future research on culling models.
T W, Lehenbauer, J W, Oltjen
openaire   +2 more sources