Because generation intervals are difficult to observe, we used the serial interval as a proxy for the generation interval (18) and assumed equivalence.
How generation intervals shape the relationship between growth rates and reproductive numbers.
Generation interval, observed in our study, was larger for female's pathways, than for male's pathways in all breeds, expect the PN.
Generation intervals, PCI, and effective population size were computed in population report (POPREP) package (Groeneveld et al.
However, assumptions on the generation interval and mating structure were characteristic to breeding programs for greenlip abalone and influence genetic gains over the time frame that was used in this study.
For this purpose, the simulation implemented mating structures and generation intervals that are characteristic to a commercial greenlip abalone breeding program.
Effective population size, inbreeding and generation interval
In this study, a reference population was defined as piglets born from year 2008 to 2009 because the average generation interval for each breed was close to 2 yr (Table 2).
These probabilities depend on the number of days separating the onset of symptoms on the 2 farms (i and j) and the distance (in kilometers) separating i and j, and the probabilities were extracted from a probability density function of the generation interval (online Technical Appendix, wwwnc.
from another epidemic in another country) was available to estimate a generation interval for RVF at the farm level and in 2 dimensions (i.
139) R estimate, mean (95% CI) 3-d generation interval
Mortality outcome Exp dist.
We assumed that the distribution of the generation interval
was known and remained unchanged during the course of the outbreak.
Average generation interval
and expected rate of inbreeding
The two principal aims of the scheme are to promote rapid genetic improvement via reduced generation intervals
and improved selection differentials and secondly, to improve the accuracy of EBVs by increasing the connectedness (related animals) amongst herds.
MLC's Mary Browne said: "The aim of the scheme is to promote rapid genetic progress within the pedigree beef herd by reducing generation intervals
and improved genetic selection differentials.