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Table 6 Descriptive data of the 4 herds in the study

From: Microbiological, pathological and histological findings in four Danish pig herds affected by a new neonatal diarrhoea syndrome

Herd data

Herd 1

Herd 2

Herd 3

Herd 4

Study period

January 2011

March 2011

May 2011

July 2011

Herd size (number of sows)

900

1250

700

950

SPF1-status

Not declared

Not declared

SPF+AP12

SPF

Piglets weaned/sow/year2

30.7

27.1

25.4

32.3

1st parity litters (%)2

20

22

21

23

Recruitment of gilts

Purchase

Own production

Purchase

Own production

Sow feed3

Wet/ Home made

Wet/ Home made

Wet/ Home made

Wet/ Factory made

  1. 1: Specific Pathogen Free - disease surveillance programme. Danish herds can participate in this programme which registers presence of certain infectious diseases, including PRRS, M. hyopneumoniae, A. pleuropneumoniae, P. multocida tox+ and B. hyodysenteriae.2: Average values calculated from herd-registrations made in a 3-month-period prior to investigation. 3: Feed type used in farrowing period.