Table 2.
Parameter estimates, 95% confidence intervals (95% CI s), and Akaike importance weights of model-averaged top models predicting the probability of pregnancy per pairing (pairing success), 3 categories of litter size, the slope (g/day) of the logarithmic growth curve of juveniles from 4 to 26 weeks of age, probability of survival of from birth to emergence from the natal burrow (15 days), and survival from emergence to 1 year in pygmy rabbits (Brachylagus idahoensis) ranging from 0% to 100% Columbia Basin (CB) pedigree (genome) in the captive breeding facility at Washington State University, Pullman, Washington, from 2001 to 2010. Coefficients are not provided for the factor “year,” which had coefficients for each year from 2001 to 2002. Asterisks (*) denote coefficients with 95% CI s that did not overlap 0.
| 95% CI | |||||
|---|---|---|---|---|---|
| Model | Variable | Estimate | Lower | Upper | Importance weight |
| Pairing success | Intercept | 4.424 | 3.500 | 5.353 | — |
| Dam % CB | −0.027* | −0.034 | −0.020 | 1.00 | |
| Sire % CB | −−6e–5 | −0.001 | 0.001 | 0.22 | |
| Dam age | −0.885* | −1.148 | −0.621 | 1.00 | |
| Sire age | −0.053 | −0.211 | −0.105 | 0.22 | |
| Previous litter | 0.118 | −0.099 | 0.334 | 1.00 | |
| Month of pairing | 0.044 | −0.040 | 0.127 | 0.17 | |
| Year of pairing | —* | — | — | 1.00 | |
| Litter size | Intercept 1 | 0.350 | −0.468 | 1.168 | — |
| Intercept 2 | 3.923 | 0.914 | 4.838 | — | |
| Dam % CB | 0.001 | −0.002 | 0.004 | 0.19 | |
| Dam age | 0.457* | 0.414 | 0.871 | 1.00 | |
| Previous litter | −1.238* | −1.587 | −0.889 | 0.74 | |
| Month of birth | −2e−5 | −0.030 | 0.029 | 0.15 | |
| Juvenile growth | Intercept | 30.637 | 27.340 | 33.934 | — |
| Dam % CB | −0.013 | −0.032 | 0.007 | 0.38 | |
| Sire % CB | −0.063* | −0.088 | −0.038 | 1.00 | |
| Sex (Female versus male) | 2.402* | 1.712 | 3.092 | 1.00 | |
| Litter size | −0.239 | −0.688 | 0.210 | 1.00 | |
| Month of birth | 0.085 | −0.439 | 0.609 | 1.00 | |
| Year of birth | —* | — | — | 1.00 | |
| Surival—birth to emergence | Intercept | −24.955 | −31.627 | −19.283 | — |
| Dam % CB | −0219* | −0.282 | −0.156 | 1.00 | |
| Sire % CB | 0.122* | 0.072 | 0.171 | 1.00 | |
| Dam age | −2.63* | −4.589 | −0.677 | 0.80 | |
| Previous litter | 1.399 | −0.358 | 3.160 | 0.49 | |
| Temperature at birth | 0.613* | 0.494 | 0.731 | 1.00 | |
| Year of birth | — | — | — | 0.32 | |
| Survival—emergence to 1 year | Dam % CB | −4e−4 | −0.002 | 0.001 | 0.20 |
| Sire % CB | −0.002 | −0.007 | 0.002 | 0.32 | |
| Month of birth | −0.404* | −0.562 | −0.246 | 1.00 | |
| Year of birth | —* | — | — | 1.00 | |