K. O. Ibiwoye, G. T. Iyeghe-Erakpotobor, J. J. Omage, F. O. Oke


A study was carried out to evaluate the effect of dietary supplementation of feed grade ascorbic acid on growth performance of Hyla parents, pure and cross f1 rabbit does under tropical humid environment. A total of 81 rabbit does comprising of 35 multiparous pure New Zealand White (Parents) and 46 primiparous F1 progenies of the parents (31 pure New Zealand White and 15 cross Californian x New Zealand White F1) were used for the study. Ascorbic acid (AA) was included in the diets of the rabbits at levels of 0 (control), 200, 300 and 400 mg AA/kg feed. Feed intake, ascorbic acid intake and body weight parameters were determined weekly for 14 weeks with a 2-week adjustment period. Results indicated that does on ascorbic acid supplementation had significant (P<0.05) lower feed intake from the third to the sixth week of the experiment and on ascorbic acid intake in all the physiological states. Weight changes were not significantly (P>0.05) affected by ascorbic acid. It could be concluded that the rabbit does were exposed to a high ambient temperature as evidenced in their depressed feed intake. Ascorbic acid might be supplemented at 200 mg/kg level in order to reduce the adverse effect of high ambient temperature and improve growth performance of rabbits in the tropics.


Ascorbic acid, Growth performance, Ambient temperature, Rabbits.

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