(3.238.116.201)
[ij] [ij] [ij] 
Email id
 

International Journal of Cow Science
Year : 2005, Volume : 1, Issue : 1
First page : ( 39) Last page : ( 42)
Print ISSN : 0973-2241.

Effect of varying concentrate to fodder ratio on in Situ degradability of fibre in cattle

Mesfin Dejene1,*, Kumar Ashok, Garg Nidhi, Saxena Prasoon Chand, Kumar Ripusudan

Department of Animal Nutrition, College of Veterinary and Animal Sciences, G.B. Pant University of Agriculture & Technology, Pantnagar 263 145, India.

* E-mail: kumar_a47@rediffmail.com

1Present address: Sirinka Agricultural Research Centre, P.O. Box. 74, Woldia, Ethiopia

Abstract

Rumen degradability of neutral detergent fibre (NDF) and acid detergent fibre (ADF) of feeds containing different concentrate to sorghum fodder ratio was studied with the in situ nylon bag technique. The different fodder concentrate ratio samples were incubated in the rumen of 3 fistulated adult bullocks for 0, 3, 6, 9, 12,18, 24, 36, 48, 72 and 96 hours. The feeds tested were 0 g concentrate mixture + 5 g sorghum fodder (variety Rio) of stage-I (75–82 DAS) (T1), 0 g conc. mix. + 5 g sorghum fodder of stage-II (105–112 DAS) (T2), 0.75 g conc. mix. + 4.25 g sorghum fodder of stage-I (T3), 0.75 g conc. mix. + 4.25 g sorghum fodder of stage-II (T4), 1.5 g conc. mix. + 3.5 g sorghum fodder of stage-I (T5), 1.5 g conc. mix. + 3.5 g sorghum fodder of stage-II (T6), 2.0 g conc. mix. + 3.0 g sorghum fodder of stage-I (T7) and 2.0 g conc. mix. + 3.0 g sorghum fodder of stage-II (T8). The disappearance of NDF and ADF increased with the increase in concentrate to fodder ratio. Stage-I had higher NDF and ADF disappearance than stage-II in each concentrate to fodder combination. In all treatments, the disappearance of NDF was higher compared to the disappearance of ADF. The instantly soluble component (a), degradation constant (c) and effective degradability (ED) of NDF and ADF were higher in stage-I than stage-II fodder. The instantly soluble component (a) and ED of NDF and ADF increased with the increase in concentrate to fodder ratio. The degradation kinetics studies indicated that sorghum fodder harvested at earlier stage was superior to harvest at later stage of growth for ruminants and it can be further improved by supplementation of concentrate.

Top

Key words

NDF disappearance, ADF disappearance, concentrate to fodder ratio, in situ degradibility.

Top

 
║ Site map ║ Privacy Policy ║ Copyright ║ Terms & Conditions ║ Page Rank Tool
772,747,535 visitor(s) since 30th May, 2005.
All rights reserved. Site designed and maintained by DIVA ENTERPRISES PVT. LTD..
Note: Please use Internet Explorer (6.0 or above). Some functionalities may not work in other browsers.