EFFECT OF SUBABUL BASED COMPLETE RATIONS ON PERFORMANCE OF KIDS
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Date
2016-12
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SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA
Abstract
ABSTRACT:
An attempt was made in the present study to include the untreated and treated
Leucena leucocephala leaf meal (ULLLM and TLLLM) by replacing the concentrate
mixture in complete rations of growing kids. The nutritive value, plane of nutrition,
and economics of production were studied. The proximate composition of untreated and treated Leucena leucocephala leaf meal obtained by treating with moist heat for 45 minutes revealed dry matter, organic matter, crude protein, ether extract, cruder fibre, total ash and nitrogen free extract of 89.90, 92.30, 21.08, 4.51, 15.96, 7.70 and 50.78%; 95.50, 88.89, 20.11, 2.98, 19.78, 11.10 and 46.03%, respectively. The cell wall constituents (%) neutral detergent fibre (NDF), acid detergent fibre (ADF), hemicelluloses, cellulose, lignin and silica, were 55.55, 21.22, 34.33, 13.73, 13.33 and 0.40, respectively for ULLLM
50.60, 25.87, 24.73, 17.94, 8.76 and 0.52, respectively for TLLLM.
A growth trial was conducted for 90 days with 30 kids (9.00 kg±0.150) by
allocating at random to five complete rations CR1 (control), CR2 (30% ULLLM),
CR3 (30 % TLLLM), CR4 (40% ULLLM) and CR5 (40% TLLLM). The ADG (g/d)
was higher (P<0.05) in CR1 followed by CR3, CR5, CR4 and CR2. The efficiency of
feed utilization was highest (P<0.05) in CR1 and CR3, mediocre in CR5 and CR4 and lowest in CR2. The DM digestibility (%) ranged from 59.77 (CR2) to 69.13 (CR1) and OM digestibility (%) from 63.99 (CR4) to 70.01 (CR1). The CP digestibility (%) was in the range of 63.16 (CR4) to 71.76 (CR1) and that of CF digestibility (%) from 49.09
(CR4) to 59.33 (CR3). The difference among the digestibility of nutrients was nonsignificant.
The NDF and ADF digestibility (%) was higher (P<0.05) in CR3 and
lower (P>0.05) in CR4.
The N intake (g/d) was highest (P<0.05) in CR1 and lowest (P<0.05) in CR4.
While the differences among the CR2, CR3 and CR5 were non-significant. The DCP
and TDN intake g/kg W 0.75
did not reveal any significant differences among the
treatment groups. Carcass characteristics in terms of dressing percentage (39.53 to 44.99), empty body weight (7.39 to 12.13) did not indicate significant changes among the treatment
groups. The edible, non edible (blood, skin, legs and gut with ingesta), organ weights, wholesale cuts, meat and bone ratio did not indicated significant difference among the kids maintained on experimental rations CR1 to CR5.
The inclusions of untreated and treated Leucena leucocephala leaf meal
(ULLLM and TLLLM) in the complete rations of kids on serum T3 and T4 hormonal
profile determined at 0, 30, 60 and 90 days of experiment showed significant
reduction (P<0.05) in CR2 and CR4 as compared to CR1 or CR3 or CR5.
Histopathological examination of thyroid gland indicated morphological
changes in terms of hyperplasia of epithelial cells and follicular vacuolation with
cuboidal epithelium were prominent in CR2 and CR4 group, while in control group
there was normal pattern and very mild changes were seen in CR3 and CR5.
The result of present study indicated that the treated Leucena leucocephala
leaf meal can be included at 30% level in complete ration of growing kids as
replacement of concentrate mixture on weight by weight basis under intensive system
of rearing.
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