Legume Genomics and Genetics 2015, Vol.6, No.3, 1-7
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Table 4 Status of nutritional and anti-nutritional factors in leaves of lablab and field bean
varieties
Name of variety Moisture (%) Dry matter (%) Crude fiber (%) protein (%) Tannic acid (mg/ 100g) Total phenol (mg/100g)
Arka Jay
79.9
20.1
26.9
21.4
15.5
5.5
Arka Vijay
77.3
22.7
14.8
18.9
21.6
6.8
Konkan Bhushan 80.36
19.7
31.0
23.6
19.9
6.5
AnkurGoldy
78.5
21.5
28.5
23.8
18.5
6.7
Dipali
74.9
25.1
31.4
20.1
25.8
6.9
Dasara
76.7
23.3
29.4
21.3
23.9
7.2
HA-3
77.1
22.9
28.3
19.2
28.0
8.9
Ankur 1732
76.1
23.9
25.7
17.4
20.6
6.7
2 Discussion
2.1 Varietal improvement
Lablab and field bean are potential legume crops of
great importance as food sources of high energy and
good protein quality. A sustainable way of improving
the feeding value of poor quality crop residues and
pastures, is through supplementation with forage
legumes. Indian varieties ‘Dipali’ and ‘Dasara’ can be
compared with popular Australian
forage cultivars
“Rongai; a late maturing vigorously twinning (Evans,
2002) one and 'Highworth”, originated from India and
morphologically similar to ‘Rongai', 'Koala' and
'Endurance'. The dwarf bushy types have the
comparative yield to that of Indeterminate/ viny types
as there is increase in per acre plant population.
(Byregowda, 2011; Rajput et al., 1991; Rajput et al.,
1994). Earliness in flowering and fruiting permits
cultivation of this crop all round the year offering
higher economic gains to farmers.
2.2 Status of nutritional factors present
In the present study proximate analysis was done to
know approximate composition of biological matter
and nutritional evaluation of the varieties under study.
The World Health Organization (WHO) guidelines
(1990) suggest proximate analysis for quality control
and identification of raw material which includes
contents of moisture, dry matter and crude fiber. The
average 28% crude fiber in dry matter of lablab bean,
is a challenge for growing as a forage crop in the
tropical environment, as high temperature decreases
the soluble carbohydrate content in the plants resulting
in increased fiber content and decreased digestibility
(Norton and Poppi, 1995). Legumes are reported to
contain higher content of lignin than grasses and the
crude fiber content of legumes generally increases
with maturity (Minson, 1990) with the stem reported
to have the highest fiber level as compare to leaf and
the pod containing the lowest crude fiber. The
minimal requirements for growth and lactation of
diary animals can easily be fulfilled by lablab bean
with a mean crude protein content of 17%. Amino
acids in Free form do not require any digestion and
small amounts can easily and quickly reach our
bloodstream allowing them to be used immediately by
muscles and tissues.
Tryptophan, an essential amino acid, is a derivative of
alanine, having an indole substituent on the β carbon.
It is necessary for normal growth in infants and for
nitrogen balance in adults. It is a precursor of indole
alkaloids in plants and is useful as an antidepressant
and also as a sleep aid as it is a precursor of serotonin.
Methionine is the only sulfur containing amino acid
that is essential for mammals and must therefore be
derived entirely from the diet. Dolichos beans are well
adapted to a wide range of climates and environmental
conditions and known to show drought tolerance may
be because of proline accumulation which is a
common metabolic response of higher plants to water
deficits and salinity stress. Proline protects membranes
and proteins against the adverse effects of high
concentrations of inorganic ions and temperature
extremes
(
Stewart and Larher, 1980; Thompson, 1980;
Stewart, 1981; Hanson and Hitz, 1982; Rhodes, 1987;
Delauney and Verma, 1993; Samaras et al., 1995;
Taylor, 1996; Rhodes et al., 1999).
2.3 Status of Anti-nurtional factors present:
The anti-nutritional factors (ANFs) are defined as
those substances that are generated in natural food
stuffs by normal metabolism of species and by
different mechanisms such as inactivation of some
nutrients, diminutrition of the digestive process or
metabolic utilization of the feed, which exert effect
contrary to optimum nutrition. Untreated Field bean
