Promising yearlings (horses aged one to two) sell for some £500,000, and an owner could earn back that sum by winning two of the high-stakes races at Royal Ascot.However, paying for upkeep and jockeys does not come cheap.
These datasets included 2-year-old, adult, and either yearling or aged dams and only lambs born as single births and twins for the birth weight analysis or with TBR = 11 and 22 for weaning weights.> -wrap-foot> aIncludes flocks from the core dataset that have at least 50 records on yearling dams.
The model for yearling weight contained yearling age as an additional fixed covariate.
The calves are weaned at 7 months and grouped together until yearling age (18 months).
Artificial selection has increased the weights at which cattle are marketed either at weaning or yearling ages while simultaneously decreasing the incidence of assisted births (Additional file 1: Figures S3 and S9), and the trends observed in our data set are very similar to those reported for the entire Angus breed [ 31].
We defined age classes as cubs (0 1 year of age), yearlings (1 2 years of age), sub-adults (2 4 years of age), and reproductively successful adults (4+ years of age).
The prevalence of alterations in each body area, the prevalence of previous diseases, and the classification of rams according to age (yearlings, adults and aged rams) is summarised in Table 1.
Tissue samples were obtained from a yearling fallow buck and from five adult fallow bucks, aged between 4 and 9 years.
In total, 250 female yearling (>1 year of age) and adult (>2 years of age) moose aged between 1.5 and 18.5 years old (mean age 4.3 years) were sampled during 2007 2011.
Each badger was sexed, aged as either an adult (more than two years of age) or yearling (between one and two years of age; ageing was based on tooth wear as described in [44]), examined for signs of reproduction, injuries and parasites and then given a unique tattoo identification code in the inguinal region.
