Table 4 Least squares means for lamb survival by percentage of East Friesian breeding of the lamb (1999 lamb crop)
From: Dairy sheep production research at the University of Wisconsin-Madison, USA – a review
Survival rate,% | ||||
|---|---|---|---|---|
Lamb’s % EF breeding | No. lambs born alive | Birth to weaning | Weaning to 7/1/99 | Birth to 7/1/99 |
0 | 56 | 96.4 ± 3.5a | 100.0 ± 2.9a | 96.4 ± 4.2a |
>0 to <25 | 146 | 96.6 ± 2.2a | 99.3 ± 1.8a | 95.9 ± 2.6a |
≥25 to <50 | 70 | 97.1 ± 3.1a | 98.5 ± 2.6a | 95.7 ± 3.8a |
50 | 60 | 95.0 ± 3.4a | 93.0 ± 2.8a,b | 88.3 ± 4.1a |
>50 | 151 | 83.4 ± 2.1b | 86.5 ± 1.9b | 72.2 ± 2.6b |