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Kỷ yếu hội nghị quốc tế 2019
Số tạp chí 4 ARPA(2019) Trang: 31-39
Tạp chí: Proceeding of INTERNATIONAL CONFERENCE ON RABBIT PRODUCTION IN TROPICAL CLIMATE
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Two experiments were done on Mucana pruriens replacing dietary Para grass to evaluate the nutrient intake and digestibility, nitrogen retention and growth rate of crossbred rabbits. The first experiment was a completely randomized design with 5 treatments and 3 replications, which was a feeding trial. Sixty crossed-rabbits at 8 weeks of age was used for the experiment with four rabbits in one experimental unit (balanced sex). The treatments were Mucana pruriens (MP) replacement to basal diet of Para grass (PG) at the level of 0, 20, 40, 60 and 80 % (DM basis) corresponding to the MP0, MP20, MP40, MP60 and MP80 treatments. The second experiment was the digestibility trial, in which the design was similar to that of the feeding trial, and sixty crossbred rabbits were used at 12 weeks of age. The results showed that in Exp. 1, daily DM intake of PG decreased significantly as the MP replaced increased (Porganic matter (OM) among treatments (Phigher on the MP60 and MP80 diets. Crude protein (CP) intake was increased significantly (Preplaced increased in the diets. NDF and ADF intakes were significantly higher (Ptreatments. The live weight gain was significant difference (P(21.3g/rabbit/day), however, the feed conversion ratio was significantly different (Pwith the highest value for MP80 treatment. In Exp. 2, the apparent digestibility of DM, OM, CP were not significant among the treatments (P>0.05). There were significant differences (Pthe higher values for MP60 (51.6% and 48.8%, respectively). Nitrogen intake was significantly different (Pamong the treatments. A trend of increased nitrogen retention (P=0.057) when increasing the levels of MP replacing Para grass was found. It was concluded that the highest performance of live weight gain, feed conversion and economic return of crossbred rabbits was in MP60 treatment. The nutrient digestibility and nitrogen retention of the rabbit were improved, when supplementing Mucana pruriens in the diets.

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