Twenty five rabbit does were arranged in a completely randomized design with 5 treatments and 5 replications to
evaluate the reproductive performance of crossbred rabbits (New Zealand x Local rabbits) fed 5 levels of crude
protein (CP) including 30, 32, 34, 36 and 38 g CP/doe/day corresponding to the CP30, CP32, CP34, CP36 and
CP38 treatments. The crude protein supplementation in diets was from water spinach leaves and concentrate with
Para grass (Brachiaria mutica) as a basal diet. The experiment was carried out at the experimental farm of Can
Tho University from May to Sep, 2017.
The results showed that litter size at birth, weight of litter at birth, number of rabbit at weaning, weight of rabbit
at weaning in litter1 enhanced with increasing of CP in the diets, the higher values were found for the treatments
of 36 and 38 g CP/doe/day (P>0.05). The growth rate of pregnant doe and milk production (g/doe/day) of
experimental rabbits increased with increasing of CP levels in the diets and the values were higher for the
treatments of 36 and 38 g CP/doe/day (Plitter at birth, number of rabbit at weaning, weight of rabbit at weaning improved with increasing of CP levels in
the diets (Pthe higher values for the treatments of 36 and 38 g CP/doe/day. It was concluded that the higher reproductive
performance of crossbred rabbits in two litters were found in the treatments of 36 and 38g CP/doe/day.

Keywords: crossbred rabbit, crude protein, para grass, reproductive performance, water spinach