Skip to main content

Table 2 Summary of factors influencing lamb survival times in ten sheep breeds in GB.

From: Associations between lamb survival and prion protein genotype: analysis of data for ten sheep breeds in Great Britain

  factor
Breed PrP genotype birth weight litter size sex age of dam year of birth
model including birth weight       
Beulah Speckled Face ns ***a ns *** ns **
Bluefaced Leicester ns **a ns ns ns ***
Charollais ns ***b ** ns ns ***
Lleyn ns ***a ns *** ns ***
North Country Cheviot (Hill) ns ***a * *** ns ***
North Country Cheviot (Park) ns **b ns *** ns ***
Poll Dorset ns ***b * *** ns ***
Scottish Blackface ns ***b * *** ** ***
Texel ns ***a ns *** * ns
Welsh Mountain ns ***a ns *** ** **
model excluding birth weight       
Beulah Speckled Face ns - *** *** ns ns
Bluefaced Leicester ns - ns ns * **
Charollais * - *** ns ns ***
Lleyn ns - * *** ** ***
North Country Cheviot (Hill) ns - *** *** ns ***
North Country Cheviot (Park) ns - *** *** *** ns
Poll Dorset ns - *** *** ** ***
Scottish Blackface ns - *** *** *** ***
Texel ns - ** *** ** **
Welsh Mountain ns - ** *** *** ns
  1. significance in final model or when deleted from the model: ns (P > 0.05); * (0.01 <P ≤ 0.05); ** (0.001 <P ≤ 0.01); *** (P ≤ 0.001)
  2. a superscripted letter indicates birth weight incorporated as a linear (a) or quadratic (b) function in final model