The relationship between milking interval and somatic cell count in automatic milking systems

H. Mollenhorst, M.M. Hidayat, J. van den Broek, F. Neijenhuis, H. Hogeveen

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)

Abstract

The aim of this study was to explore whether, during automatic milking, milking interval or its variation is related to somatic cell count (SCC), even when corrected for effects of production, lactation stage, and parity. Data on milking interval and production level were available from the automatic milking systems of 151 farms. Data on SCC, parity, and lactation stage were derived from dairy herd improvement records of the same farms. Mainly due to incomplete records, data of 100 farms were used in the final analysis. For every cow, only 1 test day was used in the final analysis. Milking interval, the coefficient of variation of milking interval, production rate, the difference in production rate between short- and long-term, parity, days in milk, and some biologically relevant interactions were used in a linear mixed model with farm as random variable to assess their association with log10-transformed SCC. None of the interactions was significantly related to SCC, whereas all main effects were, and thus, stayed in the final model. The effect of milking interval was, although significant, not very strong, which shows that the effect of milking interval on SCC is marginal when corrected for the other variables. The variation in milking intervals was positively related with SCC, showing that the variation in milking interval is even more important than the milking interval itself. In the end, this study showed only a limited association between milking interval and SCC when milking with an automatic milking system
Original languageEnglish
Pages (from-to)4531-4537
JournalJournal of Dairy Science
Volume94
Issue number9
DOIs
Publication statusPublished - 2011

Fingerprint

milking frequency
somatic cell count
milking
Cell Count
Parity
Lactation
lactation stage
farms
farm records
herd improvement
Linear Models
Milk
dairy herds
Farms

Keywords

  • udder health
  • constituents
  • quarters

Cite this

@article{93379a315d3a4f18bfcb29484edad410,
title = "The relationship between milking interval and somatic cell count in automatic milking systems",
abstract = "The aim of this study was to explore whether, during automatic milking, milking interval or its variation is related to somatic cell count (SCC), even when corrected for effects of production, lactation stage, and parity. Data on milking interval and production level were available from the automatic milking systems of 151 farms. Data on SCC, parity, and lactation stage were derived from dairy herd improvement records of the same farms. Mainly due to incomplete records, data of 100 farms were used in the final analysis. For every cow, only 1 test day was used in the final analysis. Milking interval, the coefficient of variation of milking interval, production rate, the difference in production rate between short- and long-term, parity, days in milk, and some biologically relevant interactions were used in a linear mixed model with farm as random variable to assess their association with log10-transformed SCC. None of the interactions was significantly related to SCC, whereas all main effects were, and thus, stayed in the final model. The effect of milking interval was, although significant, not very strong, which shows that the effect of milking interval on SCC is marginal when corrected for the other variables. The variation in milking intervals was positively related with SCC, showing that the variation in milking interval is even more important than the milking interval itself. In the end, this study showed only a limited association between milking interval and SCC when milking with an automatic milking system",
keywords = "udder health, constituents, quarters",
author = "H. Mollenhorst and M.M. Hidayat and {van den Broek}, J. and F. Neijenhuis and H. Hogeveen",
year = "2011",
doi = "10.3168/jds.2011-4244",
language = "English",
volume = "94",
pages = "4531--4537",
journal = "Journal of Dairy Science",
issn = "0022-0302",
publisher = "American Dairy Science Association",
number = "9",

}

The relationship between milking interval and somatic cell count in automatic milking systems. / Mollenhorst, H.; Hidayat, M.M.; van den Broek, J.; Neijenhuis, F.; Hogeveen, H.

In: Journal of Dairy Science, Vol. 94, No. 9, 2011, p. 4531-4537.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - The relationship between milking interval and somatic cell count in automatic milking systems

AU - Mollenhorst, H.

AU - Hidayat, M.M.

AU - van den Broek, J.

AU - Neijenhuis, F.

AU - Hogeveen, H.

PY - 2011

Y1 - 2011

N2 - The aim of this study was to explore whether, during automatic milking, milking interval or its variation is related to somatic cell count (SCC), even when corrected for effects of production, lactation stage, and parity. Data on milking interval and production level were available from the automatic milking systems of 151 farms. Data on SCC, parity, and lactation stage were derived from dairy herd improvement records of the same farms. Mainly due to incomplete records, data of 100 farms were used in the final analysis. For every cow, only 1 test day was used in the final analysis. Milking interval, the coefficient of variation of milking interval, production rate, the difference in production rate between short- and long-term, parity, days in milk, and some biologically relevant interactions were used in a linear mixed model with farm as random variable to assess their association with log10-transformed SCC. None of the interactions was significantly related to SCC, whereas all main effects were, and thus, stayed in the final model. The effect of milking interval was, although significant, not very strong, which shows that the effect of milking interval on SCC is marginal when corrected for the other variables. The variation in milking intervals was positively related with SCC, showing that the variation in milking interval is even more important than the milking interval itself. In the end, this study showed only a limited association between milking interval and SCC when milking with an automatic milking system

AB - The aim of this study was to explore whether, during automatic milking, milking interval or its variation is related to somatic cell count (SCC), even when corrected for effects of production, lactation stage, and parity. Data on milking interval and production level were available from the automatic milking systems of 151 farms. Data on SCC, parity, and lactation stage were derived from dairy herd improvement records of the same farms. Mainly due to incomplete records, data of 100 farms were used in the final analysis. For every cow, only 1 test day was used in the final analysis. Milking interval, the coefficient of variation of milking interval, production rate, the difference in production rate between short- and long-term, parity, days in milk, and some biologically relevant interactions were used in a linear mixed model with farm as random variable to assess their association with log10-transformed SCC. None of the interactions was significantly related to SCC, whereas all main effects were, and thus, stayed in the final model. The effect of milking interval was, although significant, not very strong, which shows that the effect of milking interval on SCC is marginal when corrected for the other variables. The variation in milking intervals was positively related with SCC, showing that the variation in milking interval is even more important than the milking interval itself. In the end, this study showed only a limited association between milking interval and SCC when milking with an automatic milking system

KW - udder health

KW - constituents

KW - quarters

U2 - 10.3168/jds.2011-4244

DO - 10.3168/jds.2011-4244

M3 - Article

VL - 94

SP - 4531

EP - 4537

JO - Journal of Dairy Science

JF - Journal of Dairy Science

SN - 0022-0302

IS - 9

ER -