Relationship between chemical body composition, fertility and prolificacy in nulliparous rabbit does | Relación entre la composición química corporal, la fertilidad y la prolificidad en conejas nulíparas
2011
Taghouti, M., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos | García, J., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos | Machiavelli, R., Universidad de Puerto Rico, Mayagüez (Puerto Rico) | Demmey, J., Universidad Central de Venezuela, Maracay (Venezuela) | Nicodemus, N., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos
This study evaluated the effect of body composition at first artificial insemination (AI) on fertility and prolificacy in nulliparous rabbit does. Data of 134 does from 2 experiments and 2 different genetics (UPV and Hyplus) were analysed. Fertility was 93.2 % and the percentage of kits born alive over total born was 93.4% (8.00+/-2.97 kits born alive/parity). Neither body weight nor its chemical composition at first AI had effect on fertility. However, the increase of the body proportion of protein and energy at IA influenced positively the number of kits born alive (P<0.05). The increase of body protein from 16 to 17% at first AI increased proportion of kits born alive from 88.7 to 92.5%, and when body protein increased until 18% it reached 95.2%. Rabbit does with a body energy content higher than the mean (1100 y 1300 vs. 1057 +/- 233 kJ/100g) increased the proportion of kits born alive from 93.4 to 93.8 and 95.0%, respectively.
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