Oestrus and ovulatory response of goats with different parity to male effect and short-term progestagen treatment
| dc.contributor.author | Simões, João | |
| dc.contributor.author | Baril, Gérard | |
| dc.contributor.author | Cunha, Teresa | |
| dc.contributor.author | Azevedo, Jorge Manuel Teixeira de | |
| dc.contributor.author | Teixeira, Victor | |
| dc.contributor.author | Ribeiro, Catarina | |
| dc.contributor.author | Mascarenhas, Ramiro | |
| dc.date.accessioned | 2012-04-10T14:17:54Z | |
| dc.date.available | 2012-04-10T14:17:54Z | |
| dc.date.issued | 2008 | |
| dc.description.abstract | The aim of this work was to determine the oestrous and ovulatory activity in goats with different parity after male effect associated to short-term progestagen treatments. In April, 15 nulliparous (NG; 25.2 ± 0.7 Kg) and 22 multiparous (MPG; 40.3 ± 0.7 Kg) Serrana goats were treated with 20 (NG20=7; MPG20=11), or 30 mg (NG30=8; MPG30=11) of fluorogestone acetate sponges (Chronogest® CR 20 mg / Chronogest® 30 mg, Intervet, Holland), starting 6 days before introduction of 3 active bucks in the flock (BI). Before treatment, all goats were anoestrous. Oestrous behaviour and mounting acceptance were evaluated, every 8 h, until 80 h after BI. Plasma LH levels were evaluated until 24h after onset of oestrus. Plasma progesterone (P4) was determined, twice weekly, from 2 months before until 10 days after BI. Sub-oestrus (silent ovulation) goats were considered when ovulation occurred without oestrous behaviour. No significative differences were found in percentage of oestrus and ovulatory activities between progestagen treatments (P > 0.05). Oestrous behaviour was observed in 26.7% (4/15) of NG and 68.2% (15/22; P = 0.01) in MPG. Sub-oestrus occurred in 53.3% (8/15) of NG and only in 13.6% (3/22; P < 0.01) of MPG. The percentage of ovulation was 90.9% (20/22) in NG and 80.0% (12/15; P > 0.05) in MPG. In conclusion, parity of females appears affect the oestrus behaviour response but not ovulation in goats exposed to male effect after progestagen treatments. | por |
| dc.identifier.uri | http://hdl.handle.net/10348/1755 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.relation.ispartof | CECAV - Centro de Ciência Animal e Veterinária | por |
| dc.rights | restricted access | por |
| dc.subject | Male effect | por |
| dc.subject | ovulation | por |
| dc.subject | Goats | por |
| dc.subject | Progestagen | por |
| dc.title | Oestrus and ovulatory response of goats with different parity to male effect and short-term progestagen treatment | por |
| dc.type | conferenceObject | por |
| degois.publication.location | Utrecht - Netherlands | por |
| degois.publication.title | XII Annual ESDAR Conference | por |
| dspace.entity.type | Publication | en |
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