Academic
Publications
Variation of Edema Scores from Herd-Year, Age, Calving Month, and Sire1

Variation of Edema Scores from Herd-Year, Age, Calving Month, and Sire1,10.3168/jds.S0022-0302(83)82097-9,Journal of Dairy Science,M. R. Dentine,B. T.

Variation of Edema Scores from Herd-Year, Age, Calving Month, and Sire1   (Citations: 11)
BibTex | RIS | RefWorks Download
Edema was scored by herd personnel in six Holstein herds in North Carolina. Scores ranged from 1 (none) to 5 (ex- tremely severe) at calving and at I and 2 wk postpartum. Mean scores and standard deviations were 2.91 -+ .71 at calving, 2.12 -+ .71 at 1 wk, and 1.54 -+ .64 at 2 wk. Total score, the sum of the three ratings for each calving, averaged 6.57 + 1.89. Scores differed by herd-year and lactation but not by month of calving. Heritabilities within first, second, and grouped later (1> 3) lactations were estimated by paternal half-sister co- variance analyses from two subsets of the data. The first data set included sires with 5 or more daughters; the second, sires with 10 or more daughters. Heritabilities averaged .13 for first lactations, .10 for second lactations, and .12 for later lactations. When adjusted to underlying normal distribution, heritabilities were increased. These heritabilities suggest that progeny tests based on 50 or more daughters should identify bulls trans- mitting more persistent edema. The desirability of such progeny tests depends on the relative importance and economic impact of reduced edema severity in the dairy cattle population.
Journal: Journal of Dairy Science - J DAIRY SCI , vol. 66, no. 11, pp. 2391-2399, 1983
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...In agreement with other studies (1, 3, 5, 8, 9, 12, 21), the odds of parturient and nonparturient paresis increased with parity (Tables 2, 7). Udder edema had an irregular parity pattern (Table 3; it was lower in 2 and >6 parities); higher risk in first lactation heifers is known (6)...

    Y. T. Gröhnet al. Epidemiology of Metabolic Disorders in Dairy Cattle: Association Among...

    • ...Udder edema was scored (1 to 5) according to methods described by Dentine and McDaniel (3); body condition scoring was done as described by Wildman et al. (23) with a range from 1 to 5 along with pluses and minuses (resulting in 15 different possible scores), and dystocia was scored (1 to 5) according to the scheme of Pollak and Freeman (14)...

    W. A. Greeneet al. Effects of Prepartum Milking on Milk Production and Health Performance

    • ...Scoring system was from 1 (none) to 5 (extremely severe) with the same restrictions and editing as in (1)...
    • ...Individual cow scores for edema were adjusted within lactation (1) for fixed effects by least squares according to the model:...
    • ...Individual cow scores for edema were adjusted within lactation (1) for fixed effects by least squares according to the model: Yijk(1) =/11 + HYij + bl(At) + eijk(1)...
    • ...Individual cow scores for edema were adjusted within lactation (1) for fixed effects by least squares according to the model: Yijk(1) =/11 + HYij + bl(At) + eijk(1)...
    • ...Yijk(1) =individual cow edema score within lactation 1. #1 = an overall constant common to all Y in the 1 th lactation...
    • ...eijk(1) =random residual, normally distributed with mean of 0 and variance o2(1)...
    • ...Classification udder trait codes were adjusted within lactation according to the model: Uijkmn(1) = v 1 + HYij + C k +...
    • ...Uijkmn(1) = v 1 + HYij + C k + bl(A1) + Mm + fijkmn(1)...
    • ...Uijkmn(1) = individual cow's udder trait code within lactation (1) v I = an overall constant common to all U in the 1 th lactation...
    • ...Uijkmn(1) = individual cow's udder trait code within lactation (1) v I = an overall constant common to all U in the 1 th lactation...
    • ...fijkmn(t) = random residual, normally distributed with mean 0 and variance o~(1)...

    M. R. Dentineet al. Associations of Subjective Udder Edema Scores and Descriptive Trait Co...

    • ...Very little is found in the literature on the physiological reasons for development of profound udder edema in dairy cattle, however, Dentine and McDaniel (1983) found a heritability index of 0.13 in the first lactation cows...

    Olav Østerås. PREVALENCE OF MASTITIS AT CALVING AND UDDER HEALTH STATUS

Sort by: