Table 6.

Association between alleles at OLADRB and survivorship

OLADRB allele	Coefficient lamb survival (±SE)	Coefficient yearling survival (±SE)
205	0.026  (±0.055)	−0.898  (±0.310)**
213	0.005  (±0.050)	−0.004  (±0.438)
257	−0.181  (±0.061)**	0.311  (±0.293)
263	0.085  (±0.053)	0.726  (±0.359)*
267	0.091  (±0.080)	−0.423  (±0.400)
276	−0.029  (±0.057)	0.384  (±0.382)

Alleles at the class II MHC marker OLADRB were fitted under an additive model to lamb and yearling survivorship. Coefficients are shown for weight interactions in lamb survival and main effects in yearling survival. These coefficients are derived from a generalized linear model assuming a binomial error distribution (see text). ∗, P < 0.05; ∗∗, P < 0.01.