jersey cattle society
Jersey Cattle Society
of the United Kingdom
The Studio @ The Mill
Mill Lane
Little Shrewley
Warwickshire CV35 7HN
General Enquiries T: 01926 484035
Cattle Registrations T: 01923 695203


Jersey Breed Facts

Performance trends are a very useful tool for breed societies, individual breeders, educational establishments, students and for anyone involved in breed promotion or simply wanting to compare and benchmark their own herd and animal performances against their contemporaries.

The Centre for Dairy Information is able draw together milk records from all UK sources, along with breed society registration data, to produce a unique guide to the productive performance of registered animals from each individual breed. Here we get an up to date overview of UK Jersey performance.

The statistics produced in this document are provided by Henry Richardson of the CDI and were derived from lactation records collected by UK Milk Recording Organisations and collated by CDI with the assistance of the following:

  • Cattle Information Service (CIS)

  • Isle of Man Dept. of Agriculture

  • National Milk Records plc (NMR)

  • Royal Jersey Association of Agriculture and Horticulture (RJA)

  • States Dept of Agriculture for Guernsey (via NMR)

  • United Dairy Farmers (Northern Ireland)

  • Together with each of the respective CDI partner Breed Societies.

There are stringent protocols in place to the validity and accuracy of data used to make these breed comparisons. To be selected for inclusion in these analyses, lactation records must meet selected qualifying criteria and have been recorded in conformance with ICAR agreements on recording practice.

In particular, each lactation must:

  • have a minimum of 5 genuine sample test results, analysed for constituents.

  • have lasted a minimum of 200 days from calving

  • have ended the lactation or completed the 305th day within the 12 months up to 30th September of the year quoted

  • include product on up to and including the 305th day of lactation, but not beyond

  • Only those lactations with a valid Cell Count result are included in the SCC aggregates

  • To be included in Calving Interval analyses, an animal must have at least two authentic calvings with consecutive lactation numbers recorded, i.e. system estimated or automatically generated calving dates are excluded.

Table 1: Lactation Performance Trends for registered animals (all ages)


The change over time reveals how much of the progress in genetic potential, nutrition and management is being achieved in practice. The number of Lactations shows how many full, qualifying lactations were completed during the year and used in the analysis of Milk, Fat and Protein results.

Calving Interval and Cell Count statistics will use slightly fewer results, depending on the number of animals who recorded a valid score. The count therefore does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded each year.

All breeds lactation yields have bounced back up again by around 200kg in 2014, this follows a dip in 2013 caused by two poor forage seasons and the Schmallenberg virus sweeping through South England and the Midlands. So 2014 continues the general trend from 2010-2013 when yields have increased.

Breed Performance download Breed Performance Statiscics 2015


tumpline internet Copyright © 1998 - 2019 Jersey Cattle Society of the United Kingdom
Registered Charity No. 252271
VAT Reg No 199 3065 26
A Company limited by Guarantee. Registered in England No.18573
tumpline internet