Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Equus ferus przewalskii

Sortuj według:

Ogranicz wyniki do:

Noninvasive monitoring of reproductive function by determination of faecal progestagens and sexual behaviour in a herd of Przewalski mares in a semireserve

100%

Scheibe K. M., Dehnhard M., Meyer H. H. D., Scheibe A.

Acta Theriologica

1999

tom 44

nr 4

We examined the reproductive activity and sexual behaviour of a herd of Przewalski mares Equus ferus przewalskii Poljakov, 1881 that were born in zoos and lived in a semireserve since 1992 during five periods in 1995-1997 of 4-6 weeks each Ovarian activity was detected by the analysis of faecal progestagens. In addition, behavioural detection of oestrus and continuous recording of the daily activity with a storage telemetry system were carried out and compared with the analytical data. Faecal 20a-hydroxypregnane analysis revealed ovarian activity to be 100% (April/May 1995), 25% (May/June 1996), 88% (October/November 1996), 63% (January/February 1997) and 100% (April/May 1997) of the mares sampled. Behavioural observations showed a seasonal pattern with maximal sexual interactions in April/May 1995/1997 and only few interactions in winter. Detailed activity records in individual animals revealed an oestrus related increase from 14 h/d to 15.6 h/d. Our results show a tendency of seasonality which support the view that Przewalski mares are seasonal breeders with sexual activity in spring and early summer. In May/June 1996 a dysregulation of reproductive activity associated with a persistent increase in locomotor activity occurred. We hypothesise external disturbances from a shooting yard close to the semireserve. Compared to behavioural observations, faecal progestagen analysis seem to be the most convenient method to investigate reproductive activity in free ranging Przewalski mares.

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Preliminary observations of the behaviour in two wild species of equids: Przewalski’s horse (Equus ferus przewalskii) and Hartmann’s zebra (Equus zebra hartmannae) kept in socially changed groups at Warsaw Zoo

80%

Kaleta T., Stokowska M., Swiderek W., Osija A.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

2017

tom 56[2]

Preliminary observations of the behaviour in two wild equids : Przewalski horse (Equus ferus przewalskii) and Hartmann`s zebra (Equus zebra hartmannae) kept in socially changed groups at Warsaw Zoo Investigations were carried out at Warsaw Zoo to examine general behaviour in two wild equids after social changes. This changes were caused by management procedures. Three Hartmann`s zebra and four Przewalski horses were observed for 117 hours throughout the whole year. Three methods of sampling were used: ad libitum, scan and focal. Abnormal behaviour in these wild equids was not found. There were several significant differences in frequency of behaviour between Przewalski horse and Hartmann`s zebra . In both species coordination of behaviour also occured. Social interaction frequency was very low and gave little support for the speculation about social structures in these groups.

Ograniczanie wyników

1 Acta Theriologica

1 Annals of Warsaw University of Life Sciences - SGGW. Animal Science

1 Dehnhard M.

1 Kaleta T.

1 Meyer H. H. D.

1 Osija A.

1 Scheibe A.

1 Scheibe K. M.

1 Stokowska M.

1 Swiderek W.

1 2017

1 1999

Wyniki wyszukiwania

Noninvasive monitoring of reproductive function by determination of faecal progestagens and sexual behaviour in a herd of Przewalski mares in a semireserve

Preliminary observations of the behaviour in two wild species of equids: Przewalski’s horse (Equus ferus przewalskii) and Hartmann’s zebra (Equus zebra hartmannae) kept in socially changed groups at Warsaw Zoo