Productivity was similar in the two years.Īn average annual kill by the Pest Destruction Board of about 15,000 rabbits of mixed ages probably accounted for less than 20% of the adult population. Females were heavier and more of them were pregnant in the first summer, but they had smaller litters males were lighter and fewer had scrotal testes.
The first summer was on average 1.5☌ warmer than the second. Litter-size of Oryctolagus seems not to vary latitudinally, unlike that of Sylvilagus spp. Rabbits breed opportunistically in Spain and in parts of Australia, but rarely in New Zealand. In Spain, where the rabbit evolved, summer rainfall is sparse and the arrival of autumn rain is erratic. Overseas, dates of breeding vary widely even at similar latitudes and productivity varies with the length of the breeding season. Adult females weighed more than adult males, the difference depending on the proportion pregnant. Some males were found with scrotal testes in every month. The average annual survival rate beyond age 6 months was 0.4t.Ībout 33% of males aged 4-6 months had scrotal testes, rising to 62% of those> 12 months old. Relative changes in numbers through the year of 1st, 2nd and 3rd year, and of older rabbits, are illustrated. The age distribution of the samples differed between years.Ībout 10% of young conceived May-November survived at least 6 months, compared with about 0.1 % of those conceived in other months. Young up to at least 3 months old were under-represented in the sample. Information included: date property age sex body-weight if male testes scrotal or not, if female whether pregnant / lactating, number and size of healthy / resorbing embryos.Ībout 52% of the rabbits shot were males. The committee (s) on EEP recommend (s) that the measure be deferred until 02-08-22 at 8:50AM. The sample represented about two-thirds of all rabbits shot by the Pest Destruction Board. Bill scheduled to be heard by EEP on Thursday, 02-03-22 9:05AM in House conference room 325 Via Videoconference. An aged sample of over 17,000 rabbits (Oryctolagus cuniculus) from the Wairarapa, in the North Island of New Zealand (area 2535 km', 41 ☁0'S), was autopsied between September 1965 and September 1967.
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