Loading...
Publication
Caracterização reprodutiva e produtiva de um sistema de produção de coelho bravo subespécie Oryctolagus cuniculus algirus
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 544.37 KB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
No efectivo reprodutor constituído por 171 fêmeas e 31 machos da subespécie Oryctolagus cuniculus algirus,
alojados no mesmo pavilhão em jaulas individuais e sujeitos ao mesmo regime alimentar, foi utilizado o maneio
reprodutivo em banda semanal de cerca de 30 reprodutoras a que correspondeu um total de 20 bandas,
considerando-se cada uma delas como uma unidade experimental. As fêmeas foram injectadas, por via
intramuscular, com 25 UI de eCG (equine Corionic Gonadotrophin) ao 11º dia pós-parto, com o objectivo de
indução e sincronização do cio. A beneficiação foi realizada ao 13 º dia, por cobrição natural. Os desmames
efectuaram-se entre os 35 e 40 dias. Das 594 cobrições realizadas entre os meses de Janeiro e Agosto de 2010,
resultou, para o total das bandas, uma taxa de fertilidade de 57,16% ±15,00 com o valor mais elevado em Abril
(82,90%), uma prolificidade de 4,67±0,86 láparos com o valor mais alto no mês de Abril (6,10) e uma
fecundidade de 2,68±0,94 láparos sendo mais elevada no mês de Junho (4,00). As taxas de mortalidade ao parto
e aleitamento foram de 14,18%±17,14 e de 28,76%±16,32 respectivamente, com os valores mais baixos a serem
registados em Janeiro (0,00 % e 6,90%, respectivamente). O número médio de láparos desmamados foi de
1,98±0,89 animais, com um valor mínimo de 0,50 e máximo de 3,20 animais. Consideramos que o coelho bravo
produzido em cativeiro apresenta baixos índices reprodutivos e produtivos. Contudo, este sistema de produção
poderá ser utilizado com o objectivo de repovoamento de zonas de caça.
A herd consisting of 171 females and 31 males of the subspecies Oryctolagus cuniculus algirus was housed in individual cages and submitted to an identical diet. Reproductive husbandry was used weekly in bands of about 30 breeding females each. Over the time of the experiment this provided a total of 20 bands, considering each one of them as an experimental unit. Females were injected intramuscularly with 25 IU of eCG (equine Chorionic Gonadotrophin) on postpartum day 11 with the aim of induction and synchronization of oestrus. They were mated naturally on day 13. The progeny rabbits were weaned between 35 and 40 days. The total number of matings from all bands, from January 2010 to August 2010 was 594. The overall fertility rate was 57.16% ± 15.00 with the highest value in April (82.90%). Overall prolificacy was 4.67 ± 0.86 rabbits with the highest value in the month of April (6.10). The overall fecundity rate was 2.68 ± 0.94 rabbits being higher in the month of June (4,00). The parturition and lactation mortality rates were 14.18% ± 17.14 and 28.76% ± 16.32 respectively, with the lower values being recorded in January (0.00% and 6.90%, respectively). The average number of weaned rabbits was 1.98 ± 0.89 animals, with a minimum value of 0.50 and maximum value of 3.20 rabbits. This captive production system results in low reproductive and productive indexes. However, this production system may be used for the purpose of restocking of hunting areas.
A herd consisting of 171 females and 31 males of the subspecies Oryctolagus cuniculus algirus was housed in individual cages and submitted to an identical diet. Reproductive husbandry was used weekly in bands of about 30 breeding females each. Over the time of the experiment this provided a total of 20 bands, considering each one of them as an experimental unit. Females were injected intramuscularly with 25 IU of eCG (equine Chorionic Gonadotrophin) on postpartum day 11 with the aim of induction and synchronization of oestrus. They were mated naturally on day 13. The progeny rabbits were weaned between 35 and 40 days. The total number of matings from all bands, from January 2010 to August 2010 was 594. The overall fertility rate was 57.16% ± 15.00 with the highest value in April (82.90%). Overall prolificacy was 4.67 ± 0.86 rabbits with the highest value in the month of April (6.10). The overall fecundity rate was 2.68 ± 0.94 rabbits being higher in the month of June (4,00). The parturition and lactation mortality rates were 14.18% ± 17.14 and 28.76% ± 16.32 respectively, with the lower values being recorded in January (0.00% and 6.90%, respectively). The average number of weaned rabbits was 1.98 ± 0.89 animals, with a minimum value of 0.50 and maximum value of 3.20 rabbits. This captive production system results in low reproductive and productive indexes. However, this production system may be used for the purpose of restocking of hunting areas.
Description
Keywords
Oryctolagus cuniculus algirus Fertilidade Prolificidade Taxas de mortalidade Fertility Prolificacy Mortality rates
Citation
Baptista, J.P.; Miguel, M. & Azevedo, P.M. (2013). Caracterização reprodutiva e produtiva de um sistema de produção de coelho bravo subespécie Oryctolagus cuniculus algirus. Actas Iberoamericanas de Conservación Animal (3):103-106