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R esearch
(Published online:
19-02-2015)
12.
Fractionation of carbohydrate and protein
content of some forage feeds of ruminants for nutritive evaluation
- Lalatendu Keshary Das, S. S. Kundu, Dinesh Kumar and Chander
Datt
Veterinary World, 8(2): 197-202
doi:
10.14202/vetworld.2015.197-202
Lalatendu Keshary Das:
Veterinary Dispensary, Kalampur, Kalahandi, Odisha, India;
drlalatendu27@gmail.com
S.
S. Kundu:
Division of Dairy Cattle Nutrition, National Dairy Research
Institute, Karnal, Haryana, India;
sskundu.kln@gmail.com
Dinesh Kumar:
Division of Animal Nutrition, Indian Veterinary Research
Institute, Izatnagar, Uttar Pradesh, India;
kr.dinesh7@gmail.com
Chander Datt:
Division of Dairy Cattle Nutrition, National Dairy Research
Institute, Karnal, Haryana, India; chandatt@gmail.com
Received: 24-10-2014, Revised: 09-01-2015, Accepted: 16-01-2015,
Published online: 19-02-2015
Corresponding author:
Lalatendu Keshary Das, e-mail: drlalatendu27@gmail.com
Citation:
Das LK, Kundu
SS, Kumar D, Datt C (2015) Fractionation of carbohydrate and
protein content of some forage feeds of ruminants for nutritive
evaluation, Veterinary World 8(2)197-202.
Abstract
Aim:
To evaluate some forage feeds of ruminants in terms of their
carbohydrate (CHO) and protein fractions using Cornell Net
Carbohydrate and Protein System (CNCPS).
Materials and Methods: Eleven ruminant feeds (six green
fodders - maize, oat, sorghum, bajra, cowpea, berseem and five
range herbages - para grass, guinea grass, hedge lucerne, setaria
grass and hybrid napier) were selected for this study. Each feed
was chemically analyzed for proximate principles (dry matter,
crude protein [CP], ether extract, organic matter and ash), fiber
fractions (neutral detergent fiber, acid detergent fiber, acid
detergent lignin, cellulose and hemicellulose), primary CHO
fractions (CHO, non-structural CHO, structural CHO and starch) and
primary protein fractions (neutral detergent insoluble CP, acid
detergent insoluble CP, non-protein nitrogen and soluble protein).
The results were fitted to the equations of CNCPS to arrive at
various CHO (CA - fast degrading, CB 1 -
intermediate degrading, CB2 - slow degrading
and CC - nondegrading or unavailable) and protein (PA -
instantaneously degrading, PB1 - fast
degrading, PB2 - intermediate degrading, PB3
- slow degrading and PC - non-degrading or
unavailable) fractions of test feeds.
Results: Among green fodders, cowpea and berseem had higher CA
content while except hedge lucerne all range herbages had lower CA
values. CB 1
content of all feeds was low but similar. All feeds except cowpea,
berseem, and hedge lucerne contained higher CB2
values. Oat among green fodders and hybrid napier
among range herbages had lower CC fraction. Feeds such as bajra,
cowpea, berseem and the setaria grass contained lower PA fraction.
All green fodders had higher PB1 content
except maize and cowpea while all range herbages had lower PB1
values except hedge lucerne. Para grass and hybrid
napier contained exceptionally low PB2
fraction among all feeds. Low PC contents were reported in oat and
berseem fodders.
Conclusion: Based on our findings, it was concluded that feeds
with similar CP and CHO content varied significantly with respect
to their CHO and protein fractions. Due to lower CC fraction, oat
and hybrid napier were superior feeds in terms of CHO supply to
ruminants. Similarly, among all feeds oat and berseem had a lower
PC fraction, thus were considered good sources of protein for
ruminants.
Keywords: carbohydrate and protein
fractions, green fodders, range herbages, ruminants.
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