|
Management Practices from Questionnaire Surveys in Herds with Very Low Somatic Cell Score Through a National Mastitis Program in France
|
ABSTRACT
French dairy herds (n = 534) were enrolled in the National 'Zero Mastitis Objective' Program to highlight management practices characterizing very low somatic cell score (SCS) herds. The herds studied were stratified into 2 groups. The first group (LOW) included herds within the first 5 percentiles and the second group (MED) herds within the 50 to 55 percentiles of herds on the basis of mean SCS for the 36 mo preceding the program. Potential explanatory variables, collected through questionnaire surveys, were analyzed using multistep logistic regression models. Twenty-six variables ...
Related newspaper, magazine, and trade journal articles from HighBeam Research
(Including press releases, facts, information, and biographies)
|
|
Genetic parameters for milk somatic cell scores and relationships with production traits in French Lacaune dairy sheep
; ...heritability estimate of lactation somatic cell score was close to 0.13 and similar for first...genetic correlations between lactation somatic cell score and milk yield, between lactation somatic cell score and fat content, and between lactation...
|
|
|
A Structural Equation Model for Describing Relationships Between Somatic Cell Score and Milk Yield in First-Lactation Dairy Cows
; ...equation models (SEqM) for somatic cell score and milk yield, with varying...repeated records of milk yield and somatic cell score of 33,453 first-lactation daughters...with a recursive effect from somatic cell score on milk yield over the 3 other...
|
|
|
Inferring Relationships Between Somatic Cell Score and Milk Yield Using Simultaneous and Recursive Models
; ...test-day records of milk yield and somatic cell score of first-lactation cows during...negative direct effects from somatic cell score to milk yield and small reciprocal effects from milk yield to somatic cell score. The direct effects were larger...
|
|
|
Accuracy and Stability of National and International Somatic Cell Score Evaluations
; ABSTRACT Somatic cell score (SCS) evaluations have been published...Interbull, evaluation accuracy, somatic cell score) Abbreviation key: DDE = DE from...data have received less attention. Somatic cell score was first evaluated in the United...
|
|
|
Spatial and Temporal Patterns of Herd Somatic Cell Score in France
; ...temporal patterns of annual milk somatic cell score (ASCS) were explored in French...spatial and temporal pattern, somatic cell score INTRODUCTION The udder health...The log-transformed SCC, or somatic cell score [SCS = log^sub 2^(SCC/100,000...
|
|
|
Genotype by environment interaction for yield and somatic cell score with alternative environmental definitions
; ...fat and protein, and weighted somatic cell score for 8897 daughters of 825 Holstein-Friesi...Less correlated response in somatic cell score was also predicted for environments...equivalent, WSCS = weighted somatic cell score. lNTRODUCTION Potential genotype...
|
|
|
Detection of mastitis in dairy cattle by use of mixture models for repeated somatic cell scores: A Bayesian approach via Gibbs sampling
; ...evaluated using datasets consisting of simulated somatic cell score records. Somatic cell score was simulated as a mixture representing two...Key words: Bayesian method, mixture model, somatic cell score, udder health) Abbreviation key: CM = clinical...
|
|
|
Short Communication: Detection of Quantitative Trait Loci Influencing Somatic Cell Score in Spanish Churra Sheep
; ...trait loci (QTL) affecting the somatic cell score (SCS). Chromosome-wise significance...sheep, quantitative trait loci, somatic cell score Classically, dairy sheep production...detail by Othmane et al. (2002). Somatic cell score phenotypic measurements were...
|
|
|
Association of Toll-Like Receptor 4 Polymorphisms with Somatic Cell Score and Lactation Persistency in Holstein Bulls
; ...and their associations with somatic cell score and lactation persistency were...estimated breeding values for somatic cell scores. A total of 3 single...receptor 4, health trait, somatic cell score, Canadian Holstein INTRODUCTION...
|
|
|
Genetic Improvement of Mastitis Resistance: Validation of Somatic Cell Score and Clinical Mastitis as Selection Criteria
; ...mastitis and lactation mean somatic cell score in first-crop daughters to...mastitis than for lactation mean somatic cell score. Compared to single-trait selection...33 to 40% for lactation mean somatic cell score. No significant nonlinear genetic...
|
For more facts and information,
see all results
