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Articles by R. Amarnath
Total Records ( 2 ) for R. Amarnath
  R. Amarnath and V. Balakrishnan
  In an effort to assess the replacement value of banana by-products viz., stem, psedostem and leaves over conventional roughage ten iso-nitrogenous and isocalorofic rations were formulated. Conventional roughage at 60% in the complete diet (control) replaced by any of the banana by-products viz., stem, psedostem and leaves either individually or in combination at two levels (30 or 60%) was evaluated in four measurements at 24 h through Hoheneim gas production test on digestibility and rumen fermentation pattern. The percent molar proportion of acetate: butyrate: propionate across the diets ranges from 63.8-86:1.7-6.5:11.5-30.66. The level of banana leaves in the complete diet proportionately influenced acetate to propionate ratio. Consequently Non Glucogenic Ratio (NGR) was also influenced and the impact was observed wherever leaves are included in the diet. The values of true digestibility indicated that leaves and psedostem at 30% in complete diet were comparable to control. It was observed that as the level of inclusion of leaves or pseudostem increased from 30 to 60%, depression (p<0.05) in digestibility was noticed, where as such trend was not observed in stem and were comparable to 60% of combination of any two banana by-products. The ATP yield for the ten different complete diets did not show any significant difference. However, the efficiency of microbial biomass production revealed that only banana leaves at 30% was comparable to control and the rest were significantly (p<0.05) lower. The YATP was highest (p<0.05) in control followed by leaves at 30%. The data on YATP, volatile fatty acids, gas produced, microbial mass generated in relation to degraded substrate of the ten complete diets indicate that control diet had the most preferred fermentable characteristics and comparable to that was leaves at 30%, where as rest diets were inferior. Hence it is concluded that banana leaves could be used in complete diet up to 30% inclusion level.
  R. Amarnath and V. Balakrishnan
  Banana by-products viz., stem, pseudostem and leaves were evaluated in three sequential runs measured at 8, 12, 24, 48 and 72 h using Hoheneim gas production test on rumen fermentation pattern. The exponential equation of gas produced by Stem is Y = -6.68+56.71 (1-EXP(-0.0153 t-l)) Lag time: 8.2 h, RSD1.09, pseudostem is Y = -11.14+69.27 (1-EXP(-0.0209 t-l}) Lag time: 8.4 h, RSD1.86 and leaves is Y = -3.79+44.58 (1-EXP{-0.0259 t-l}) Lag time 3.4 h, RSD1.40. The acetate propionate ratio was observed to be relatively higher in leaves than stem and pseudostem. The apparent and true dry matter degradability of the stem was significantly (p<0.05) lower than pseudostem and leaves. Pseudostem and leaves were able to generate microbial production at significantly (p<0.05) higher level than stem at 24 and 36 h of incubation, while stem could support significantly (p<0.05) better than pseudostem and leaves later than 48 h of incubation. Inverse relationship existed between YATP and incubation period. Pseudostem had the lowest partition factor compared to stem and leaves. The values range from 2.24 to 4.99. The half time (T½) was 45.46 h for stem, 33.03 h for pseudostem and 26.8 h for leaves. The microbial biomass production, energetic efficiency of Volatile fatty acids and YATP was significantly (p<0.05) highest in leaves when compared to stem and pseudostem at T½ of c. Hence among by-products evaluated for their fodder potential to cattle, banana leaves rank first with low partition factor, high YATP and high microbial biomass followed by pseudostem and banana stem.
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