Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Effects of parity order and reproductive management on the efficiency of rabbit productive systems
Year:2009
Research Areas
  • Animal production
Information
Abstract
The aim of this work was to study the effect of parity order and reproductive management systems on rabbit production performance. A total of 73 rabbit does (I group) were submitted to a 35-day intensive rhythm [artificial insemination (AI) on day 4 post-partum (pp) and weaning at 25 days of lactation], and 108 rabbit does (SI group) were submitted to a 42-day semiintensive rhythm (AI on day 11 pp and weaning at 35 days of lactation) during 9 months. Primiparous does had the lowest live body weight at parturition (Pb0.0001) and at 21 days of lactation (Pb0.0001). They also had lower milk production (Pb0.0001) than does with later parities. I group animals needed a higher number of AI than SI group to become pregnant (1.70± 0.03 vs. 1.39±0.03; Pb0.0001: especially after the third). Prolificacy was not affected by the management system. Parturition interval (PI) was longer than expected in both groups [56.0± 1.4 and 50.9±1.38 days in I and SI groups, respectively (Pb0.05)]. Mean productivity, estimated as number of weaned rabbits per female and year, was 12 kits higher in rabbit does of the SI group (Pb0.05). From the third parturition onward, an increase in live body weight of kits at different ages was observed. At 21 (Pb0.05) and 25 days of age (Pb0.01), kits from the I group rabbit does weighed more than those from the SI group; however, the latter showed a higher weight at 35 (Pb0.05) and 60 days of age (Pb0.05). Rabbit does with two or three parturitions had higher litter size at 21 and 25 days of age (Pb0.0001 and Pb0.001, respectively). Kit mortality between 21 and 25 days of age and between 35 and 60 days of agewas not affected by treatments but was higher in the I group between 25 and 35 days (18.2 vs. 5.03% in the I and SI groups, respectively; Pb0.0001) and as age of does increased (Pb0.05). In light of these results, we could conclude that long term doe reproductive performance is negatively affected and litter viability decreased when using intensive compared to a semi-intensive reproductive management.
International
Si
JCR
Si
Title
Livestock Science
ISBN
1871-1413
Impact factor JCR
1,091
Impact info
Volume
121
Journal number
0
From page
227
To page
233
Month
ENERO
Ranking
Participants
  • Autor: Maria del Pilar Garcia Rebollar (UPM)
  • Autor: M Angeles Perez Cabal (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Producción Animal
  • Departamento: Producción Animal
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