Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/292018
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Role of sperm velocity variables associated with poultry breed in 'last male precedence' |
Autor: | Santiago Moreno, Julián; Castaño, Cristina; Toledano-Díaz, A. CSIC ORCID ; Esteso, Milagros C. CSIC ORCID; López Sebastián, Antonio; García Dávila, Sara; Campo, J. L. | Fecha de publicación: | 2014 | Editor: | John Wiley & Sons | Citación: | Reproduction in Domestic Animals 49: 134-139 (2014) | Resumen: | Contents It is well known that when a hen mates with multiple roosters, it is the sperm of the last male that usually fertilizes most of the eggs ('last male precedence'). Sperm quality varies between males within a breed, but also between breeds, and thus, sperm competitiveness after mating may depend on the breeds of the roosters involved. The aim of the present work was to identify differences in sperm competitiveness between breeds, especially with respect to motility. A multibreed mating model was used. Blue Andaluza (BA) and Black Castellana (BC) hens left for 21 days with BA and BC roosters, respectively, were then left with Black-barred Andaluza (Bb) roosters for another 21 days (experimental groups hBA-rBC-rBb and hBC-rBA-rBb). Bb roosters (as the second breed replacing the first) fertilized the majority of eggs in both the hBC-rBA-rBb and hBA-rBC-rBb groups. The percentage of offspring sired by BA roosters (8.0%) was higher (p < 0.05) than the percentage of chicks sired by BC roosters (2.1%). The fertility of the BC hens in the hBC-rBA-rBb group was higher (p < 0.01) than that of the BA hens in the hBA-rBC-rBb group. No difference in sperm concentration was seen between the breeds. Within the rapid sperm subpopulation (sperm velocity, >50 μm/s), Bb sperm showed a higher straight-line velocity (VSL) and average path velocity (VAP) (p < 0.05) than BC sperm. The VSL and VAP values for Bb and BA sperm were similar. In conclusion, the present results show that the sperm of the BA breed, traditionally regarded as of moderate fertility, compensates for this drawback via sperm movement characteristics that afford it an advantage in competition scenarios involving males of other breeds. The VSL and VAP of the rapid sperm subpopulation may play the most important role in securing last male precedence. © 2013 Blackwell Verlag GmbH. | URI: | http://hdl.handle.net/10261/292018 | DOI: | 10.1111/rda.12241 | ISSN: | 0936-6768 | E-ISSN: | 1439-0531 |
Aparece en las colecciones: | (INIA) Artículos |
Mostrar el registro completo
CORE Recommender
SCOPUSTM
Citations
11
checked on 24-may-2024
WEB OF SCIENCETM
Citations
9
checked on 27-feb-2024
Page view(s)
36
checked on 28-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.