A method to measure herd udder health by combining individual cow somatic cell counts

Research output: Contribution to journalArticle

Abstract

A method is presented for computing an index of herd udder health from a frequency distribution of milk somatic cell counts (SCC). The herd udder health index (HUHI) is a summation of weighted percentages of cows in SCC groups presented in Dairy Herd Improvement program monthly reports. Weights are the inverse of the ratio of the respective group SCC midpoint to that for the lowest SCC group. Values of HUHI approach zero from 100; an index of 100 represents a distribution in which the L2 score for all cows tested was less than 2. For four dairies, coefficients of determination for HUHI and arithmetic mean SCC weighted by production ranged from 0.698 to 0.938.

Original languageEnglish (US)
Pages (from-to)541-545
Number of pages5
JournalPreventive Veterinary Medicine
Volume3
Issue number6
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

Fingerprint

Animal Mammary Glands
somatic cell count
udders
Cell Count
herds
cows
Health
herd improvement
methodology
dairy herds
dairies
Milk
Weights and Measures
milk

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

A method to measure herd udder health by combining individual cow somatic cell counts. / Thurmond, Mark.

In: Preventive Veterinary Medicine, Vol. 3, No. 6, 01.01.1986, p. 541-545.

Research output: Contribution to journalArticle

@article{2d560d61ca004928b2f856eefaf62d3f,
title = "A method to measure herd udder health by combining individual cow somatic cell counts",
abstract = "A method is presented for computing an index of herd udder health from a frequency distribution of milk somatic cell counts (SCC). The herd udder health index (HUHI) is a summation of weighted percentages of cows in SCC groups presented in Dairy Herd Improvement program monthly reports. Weights are the inverse of the ratio of the respective group SCC midpoint to that for the lowest SCC group. Values of HUHI approach zero from 100; an index of 100 represents a distribution in which the L2 score for all cows tested was less than 2. For four dairies, coefficients of determination for HUHI and arithmetic mean SCC weighted by production ranged from 0.698 to 0.938.",
author = "Mark Thurmond",
year = "1986",
month = "1",
day = "1",
doi = "10.1016/0167-5877(86)90032-2",
language = "English (US)",
volume = "3",
pages = "541--545",
journal = "Preventive Veterinary Medicine",
issn = "0167-5877",
publisher = "Elsevier",
number = "6",

}

TY - JOUR

T1 - A method to measure herd udder health by combining individual cow somatic cell counts

AU - Thurmond, Mark

PY - 1986/1/1

Y1 - 1986/1/1

N2 - A method is presented for computing an index of herd udder health from a frequency distribution of milk somatic cell counts (SCC). The herd udder health index (HUHI) is a summation of weighted percentages of cows in SCC groups presented in Dairy Herd Improvement program monthly reports. Weights are the inverse of the ratio of the respective group SCC midpoint to that for the lowest SCC group. Values of HUHI approach zero from 100; an index of 100 represents a distribution in which the L2 score for all cows tested was less than 2. For four dairies, coefficients of determination for HUHI and arithmetic mean SCC weighted by production ranged from 0.698 to 0.938.

AB - A method is presented for computing an index of herd udder health from a frequency distribution of milk somatic cell counts (SCC). The herd udder health index (HUHI) is a summation of weighted percentages of cows in SCC groups presented in Dairy Herd Improvement program monthly reports. Weights are the inverse of the ratio of the respective group SCC midpoint to that for the lowest SCC group. Values of HUHI approach zero from 100; an index of 100 represents a distribution in which the L2 score for all cows tested was less than 2. For four dairies, coefficients of determination for HUHI and arithmetic mean SCC weighted by production ranged from 0.698 to 0.938.

UR - http://www.scopus.com/inward/record.url?scp=46149135896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=46149135896&partnerID=8YFLogxK

U2 - 10.1016/0167-5877(86)90032-2

DO - 10.1016/0167-5877(86)90032-2

M3 - Article

VL - 3

SP - 541

EP - 545

JO - Preventive Veterinary Medicine

JF - Preventive Veterinary Medicine

SN - 0167-5877

IS - 6

ER -