---- | ---------------- 880028 | 00800181, 00800004, 00800043, 00800182, 00800183, 00800194, 00800184, 00800185, 00800188, 00800154, 00800166
880005 | 00900080, 00900070, 00900045, 00900053, 00800111
880003 | 00900080, 00800043, 00900034, 00900038, 00800041, 00800041
880012 | 00900080, 00900028, 00800105
880006 | 00900080, 00900032, 00800044, 00800046, 00800043, 00800051, 00800102, 00800066, 00800709

Dictionaries describing the entities and items can be found at http://ian.lkv-nrw.de/index.php?id=309 and https://webapp.lkv-nrw.de/AdedDataDictionary/.

Obviously, reports about up to 24 months can only be generated, if the available data covers this time period.

The 'PCstart' and 'PCBerater' ADIS files from VIT fulfill these requirements.

Currently, all cows of a farm are analysed together, i.e. entries of different 'AE's are ignored.

Definitions Of The Indicators {#definitions}

Indicators for the lactation period (calculated on a monthly basis)

Name | Definition
--------------------------------------------------------------- | -----------
Percentage of cows without mastitis [@dlq2014] | Percentage of cows with SCC ≤ 100 in all lactating cows at the recent test
Lactational new infection rate [@dlq2014] | Percentage of cows with SCC > 100 at the recent test day in all cows with SCC ≤ 100 at preceding test day
Lactational cure rate [@kro2013a] | Percentage of cows with SCC ≤ 100 at the recent test day in all cows with SCC > 100 at preceding test day
Percentage of cows with chronic mastitis [@kro2013b] | Percentage of cows with SCC > 200 at the last two consecutive test days in all lactating cows
Percentage of cows with low chances of cure [@dlq2014] | Percentage of cows with SCC > 700 at the last three consecutive test days in all lactating cows

Indicators for the dry period (calculated using twelve months)

Name | Definition
------------------------------------------------- | -----------
Dry period new infection rate [@dlq2014] | Percentage of cows with SCC > 100 at the first test day in the lactation in all cows that were dried off with SCC ≤ 100
Dry period cure rate [@dlq2014] | Percentage of cows with SCC ≤ 100 at the first test day in the lactation in all cows that were dried off with SCC > 100
Heifer mastitis rate [@dlq2014] | Percentage of cows in their first lactation with SCC > 100 at the first test day in the lactation in all cows in their first lactation

Comparative Values {#compvalues}

Indicator^[The comparative values are based on Lower Saxony.] | Average herd | Best herds | Reference
-------------------------------------------------------------- | -------------- | ------------ | ----------
Percentage of cows without mastitis | 50% | >76% | [@milch2013]
Lactational new infection rate | 21% | <11% | [@milch2013]
Lactational cure rate | 17% | >25% | [@kro2013a]
Percentage of cows with chronic mastitis | | | ^[≤10% cows with chronic mastitis is acceptable, ≤5% is very good [@kro2013b].]
Percentage of cows with low chances of cure | 5% | <1% | [@milch2013]
Dry period new infection rate | 28% | <15% | [@milch2013]
Dry period cure rate | 53% | >70% | [@milch2013]
Heifer mastitis rate | 40% | <15% | [@milch2013]

User Generated Report Templates {#usertemplates}

Users can create their individual template for the reports and use it in monitor_SCCUdderHealth(). The template has to be a Sweave file and must not require other data than returned by the functions prepare_PCstart() and monitor_SCCUdderHealth() (see their documentations ^[The documentation of R functions can be obtained by typing ?TheFunctionNameWithoutBrackets at the R prompt (Be aware that R is case-sensitive.).]). The default template (inst/extdata/MLPUdderHealthReport.Rnw) should be used as example.

To use UdderHealthMonitor with a user template, load the package with

  library(UdderHealthMonitor)

and call the main function with the additional argument usertemplate:

  monitor_SCCUdderHealth(usertemplate = "full/path/to/your/template.Rnw")

Of course, you can also use the faster input which avoids the dialog boxes.

Literature {#lit}

A practical guide how to install a monitoring program for the udder health of dairy cow herds has been published by Zoche et al. [-@zo2011; -@zo2012]. There is also a handout from a workshop about controlling the udder health available from the Saxon Dairy Herd Improvement Association.

References



VZoche-Golob/UdderHealthMonitor documentation built on May 9, 2019, 9:42 p.m.