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Table 4 Fertility and calf mortality on 16 suckler beef herds

From: Herd health status and management practices on 16 Irish suckler beef farms

 

Total no. of calvings

Calving interval (days)

Mortality-dead at birth (%)1

Mortality-dead at 28 days (%)2

Calves per cow per year3

2009

1086

375 (14.5)

2.36 (1.75)

3.81 (2.59)

0.84 (0.08)

  

(353-413)4

(0%–5.9%)5

(0%–8.3%)5

(0.63–0.98)4

2010

1176

382 (16.3)

1.3 (1.58)

4.25 (3.53)

0.82 (0.1)

  

(356–421)4

(0%–4.9%)5

(0%–10.5%)5

(0.5–0.97)4

  1. Values are expressed as a mean (S.D.) of total animals.
  2. 1 Number of calves born dead as a proportion of all births during this period, 2 Number of calves born dead or dead within 28 days, as a proportion of all births recorded during this period, 3 Number of calves per cow per year, expressed as a proportion of all eligible females in the herd, eligible females being females equal or greater than 22 months of age. 4 Herd range in mean value. 5 Range among herds.
  3. Source: ICBF Herdplus. (http://www.icbf.com/services/herdplus/beef/index.php).
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Irish Veterinary Journal

ISSN: 2046-0481