NUTRITIONAL EVALUATION OF JACK (Artocarpus heterophyllus) FRUIT RESIDUE SILAGE AS LIVESTOCK FEED BY CHEMICAL, IN VITRO AND IN VIVO METHODS
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Date
2018-07
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KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR - 585 401
Abstract
An experiment was conducted to study the nutritional value of jack (Artocarpus
heterophyllus) fruit residue silage in terms of chemical composition, intake, digestibility
and efficiency of utilization in lambs fed straw based diet. Twelve Mandya lambs of
about 3 to 6 months of age with body weight ranging from 8.5 to 10.3 kg were divided
into two groups of six each in a completely randomized design. Twelve weeks feeding
trial and six days digestion trial at 8th week was carried out. First group (T1) of lambs
were fed with finger millet straw as the sole source of roughage and compounded feed
mixture (CFM), while the second group (T2) were fed with jackfruit residue silage to
partially replace (25%) FMS as a source of roughage and CFM. Chemical analyses (%)
revealed that the JFRS has higher CP (8.77 v/s 3.35) and EE (1.91 v/s 0.79) and lower
TA (6.46 v/s 8.51), NDF (34.08 v/s 71.84), ADF (27.88 v/s 46.46) and ADL (1.06 v/s
3.83) contents as compared to FMS. Cumulative gas (ml / 200mg DM / 24 h) production
and energy density (ME, MJ/kg DM) for JFRS was higher than the FMS (61.66 v/s
35.33; 10.80 v/s 7.01). The IVDMD or TDMD and NDFD were found to be 87.42% and
51.91%, respectively. There was no significant difference in total DMI (as g/d and %
BW) between the treatment groups. Significant (P≤0.05) difference was observed in
overall mean CPI, NDFI and ADFI (% BW) between the treatment groups. The ADG (g
per day) and FCR (g DMI / g BW gain) for T1 and T2 groups were statistically nonsignificant. The mean apparent digestibility (%) of nutrients (DM, OM, CP, NDF and
ADF) and the per cent DOMDM were also comparable between the treatment groups.
JFRS has a potential nutritive value, hence it can be included in the diet replacing 25 per
cent of the FMS fed to growing lambs for cost effective and eco-friendly production.