Effect of feeding diets with graded levels of ajar seed on the growth performance and nutrient utilization in rabbits
Thirty six weanling (42 days, average weight 998 g) male New Zealand White Rabbits were divided into 4 groups of 9 each on the basis of body weight. Four isonitrogenous (18% CP) and isocaloric (3.0 Kcal DE /g) concentrate mixture (T1 T2 T3 and T4) containing 0, 9, 18 and 27% Ajar seed kernel (ASK) replacing a mixture of wheat bran and cereals were prepared. Rabbits of group 1, 2, 3 and 4 were fed individually on their respective concentrate mixture (T1 T2 T3 and T4) and green paragrass in the ratio of 80: 20, on dry matter basis for 42 days. Daily feed intake and changes in weekly body weight were recorded. At the end of the feeding trial 9 animals were slaughtered to determine the dressing percentage. Average daily gain was 25.92, 22.61, 18.14 and 10.58 g with feed/ gain ratio of 3.47, 3.93, 5.24 and 9.79 in group 1, 2, 3 and 4 respectively. A metabolism trial of 5 days duration in the last week in 4 rabbits per group revealed no significan! difference on dry matter intake, however, digestibility of nutrients, balances of nitrogen and energy differed significantly among the groups. No incidence of mortality was recorded. Dressing percentage was linearly decreased along with increase level of ASK in group 3 and 4. Higher level of ASK (18 and 27%) in diet depressed growth rate, feed / gain ratio, digestibillty, balances of nutrient and dressing percentage in rabbits. Ajar seeds kernel could be incorporated into the diets of growing rabbit up to a level of 9 % as a replacement of a mixture of wheat bran and cereal grain wlthout any adverse effect on performance.
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Official journal of the World Rabbit Science Association (WRSA)
e-ISSN: 1989-8886 ISSN: 1257-5011 https://doi.org/10.4995/wrs