amélioration génétique (1) poids (1) énergie (1) jeune (1) Reproduction (1) Control (1) Breeding (1) Birth (1) Cottontop tamarin (1) Reproduction (1) Pregnancy (1) Power resources (1) Power (Mechanics) (1) Parturition (1) Months (1) Human beings (1) Males (1) Labor (Obstetrics) (1) Force and energy (1) Fathers (1) Experience (1) Couvade (1) Cope (1) Childbirth (1) Breeding (1) Body weight (1) Weight (1) Birth (1) Pregnancy (1) corps (1)