Results 21 to 30 of about 90,880 (281)

Condensation and evaporation on a randomly occupied square lattice [PDF]

open access: yes, 2002
We study the evolution of an initially random distribution of particles on a square lattice, under certain rules for `growing' and `culling' of particles. In one version we allow the particles to move laterally along the surface (mobile layer) and in the
Dutta, Tapati   +2 more
core   +1 more source

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

open access: yesAnimals, 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   +3 more
doaj   +1 more source

Multivariate Survival Mixed Models for Genetic Analysis of Longevity Traits [PDF]

open access: yes, 2014
A class of multivariate mixed survival models for continuous and discrete time with a complex covariance structure is introduced in a context of quantitative genetic applications.
Labouriau, Rodrigo   +2 more
core   +2 more sources

Mortality pattern of Murrah buffalo males in an organised herd [PDF]

open access: yesVeterinary World, 2014
Aim: The present study was carried out to analyze mortality pattern in Murrah buffalo males in National Dairy Research Institute herd. Materials and Methods: Records of 1029 Murrah buffalo males born during the period 1997-2012, at NDRI, Karnal, were ...
Pushp Raj Shivahre   +7 more
doaj   +1 more source

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

open access: yes, 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   +28 more
core   +3 more sources

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

open access: yesAnimals, 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   +3 more
doaj   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

Limiting factors of cows’ productive longevity on the industrial complex

open access: yesTheoretical 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   +4 more
doaj   +1 more source

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

open access: yesAnimals, 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   +2 more
doaj   +1 more source

Impacts of self- and cross-sucking on cattle health and performance [PDF]

open access: yesVeterinary World, 2016
Background: Improvement of dairy farms economics requires intensification, automatic milking, and artificial rearing methods. The ability to express normal behavior is one of the five freedoms to achieve animal welfare, whereas the display of abnormal ...
Motamed Elsayed Mahmoud   +2 more
doaj   +1 more source

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