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Comparative Study on Biomass Yield,Morphology,Silage Quality of Hybrid Napier and Pakchong and Their Utilization in Bull Calves

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Journal of Agricultural Science and Technology(A) 2019年第3期9卷 166-176页

作者： Nathu Ram Sarker Dilruba Yeasmin Farah Tabassum Md.Ruhul Amin Md.Ahsan Habib Poultry Production Research Division Bangladesh Livestock Research Institute(BLRI)SavarDhaka 1341Bangladesh Fodder Research and Development Project Bangladesh Livestock Research Institute(BLRI)SavarDhaka 1341Bangladesh

This work was conducted to compare the potentiality between BLRI Napier-3(bn-3)and Pakchong(PK)*** a completely randomized design(CRD)layout,10 plots(5 m′5 m each)were prepared and stem cuttings were *** plants were harvested at 70,80 and 90 days after plantation(DAP)followed by making *** Red Chittagong Cattle(RCC)growing bull calves were selected and equally divided into two treatment groups fed only silages for nutrient utilization and growth *** highest biomass yield(69.3 ton/ha)and plant height(104.6 cm)were observed in PK at 90 *** highest leaf weight(498.6 g/plant)and leaf to stem ratio(LSR)(1.53)were observed in bn-3 at 70 DAP,which was decreased gradually in progressing ***,stem weight was increased with progressing *** matter(DM)(24.71%),total ash(8.35%)and acid detergent fiber(ADF)(61.89%)in PK silage were significantly *** the other hand,crude protein(CP)(9.86%),organic matter(OM)(91.65%)and neutral detergent fiber(NDF)(88.06%)in PK silage did not differ with bn-3 *** matter intake(DMI)and crude protein intake(CPI)from PK silage(2.25 kg/day/animal and 0.22 kg/day/animal)were significantly *** of DM(55.07%),CP(62.35%),OM(57.85%),total ash(30.89%),ADF(73.02%)and NDF(78.19%)for PK silage were significantly higher.N-intake(35.57 g/d)from PK silage was significantly higher,although,N-retention did not differ *** were no significant differences in weight gain of calves fed PK(117 g/d)and bn-3(68 g/d).It can be concluded that PK silage is comparatively better than bn-3 in respect to biomass yield,digestibility and nutrient utilization in growing bull calves.

关键词： PK silage bn-3 silage biomass yield nutrient utilization

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