Growth and reproductive performance of rabbits on a moderately low crude protein diet with or without methionine or urea supplementation.
The reproductive and growth performances of New Zealand White rabbits on four dietary treatments were compared. The treatments were a 21.5% crude protein (CP) diet control, a 16% CP diet (LP), LP + .3% DL-methionine (LP + met) and LP + 2.1% urea (LP + urea). The CP in the LP diet was derived entirely from alfalfa meal and wheat mill run, with no protein supplement used. Data were collected over five parities. Preweaning and postweaning growth rates and reproductive performance as assessed by litter size, conception rate and litter interval, were comparable for the four treatments. Average daily postweaning gain was about 40 g per d. Litter size at weaning was seven kits per litter. This study indicates that a simple diet of forage and a grain-milling by-product, with no cereal grain or protein supplement, can support normal growth and reproduction of commercial meat rabbits.
D000818:Animals; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D008715:Methionine / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D011817:Rabbits / Q000254:growth & development*; D014508:Urea / Q000378:metabolism*
D004044:Dietary Proteins; D014508:Urea; D008715:Methionine