Feed Manufacturing Technology V Trial Using Twenty

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Feed Manufacturing Technology V Trial Using Twenty

These three diets were evaluated in comparison to a conventional ration in a 180-day growth and metabolism trial using twenty four Nellore ram lambs (18.810.51kg) divided into four groups of six lambs each, in a Completely Randomized Design (CRD).

At the end of growth trial three ram lambs from each group at random were slaughtered to study the carcass characteristics.

Pelleting significantly increased the digestibility of OM, CF (P recorded on all the diets and N and Ca balances were significantly (P mash diets.

The DCP and TDN values of the diet was significantly (P into pellets.

Increased trend in intakes of DM, DCP and TDN were observed in lambs fed pelleted rations than mash and conventional ration.

Significant (P0.05) differences with regard to dressing percentage, primal cuts, proportion of lean, bone, fat and edible and inedible organs was not observed among the lambs fed experimental diets.

But increased trend in dressing and lean percentage with concomitant decrease in proportion of bone and fat in lambs fed pelleted diets was observed.

Hence, neem seed cake, an unconventional feedstuff, can be incorporated into complete diets after detoxification without any deleterious on growth and meat quality.

Among pelleting methods, expander -extruder processing can be preferred over steam pelleting since the processing cost is less compared to steam pelleting.

Key words: carcass characteristics, Neem seed cake, nutrient utilization, performance, processing, sheep Introduction Small ruminants in India are mostly reared by the weaker sections of the society, who find it difficult to feed their sheep and goat on costly conventional oil seed meals.

Hence, reduction in investment by incorporating hitherto wasted and unutilized agro-industrial by-products as protein supplements need to be scrutinized.

Neem ( Azadirachta indica ) seed cake, an unconventional feed, is a good source of protein (30- 40 CP) for livestock and available to an extant of 0.9 million tons in India (Singh 1993).

The protein in cake is relatively balanced in its amino acid content and mineral profile (Gowda and Sastry 2000).

Despite high CP content, its incorporation in animal diets was discouraged due to their adverse effect on production traits because of presence of bitter and toxic triterpenoids, mainly nimbin, nimbidin, azadirachtin, and salanin (Paul et al 1996).

Further, feeding such ingredients may impart unpleasant taste or smell to meat (Clausen et al 1985).

Debitterization through solvent extraction, water washing, alkali soaking and urea- ammoniation has been tried with appreciable success (Gowda and Sastry 2000).

In addition, the palatability and utilization of unconventional feedstuffs can be improved by incorporating into complete diets and processing into pellets (Reddy and Reddy 1999).

Materials and Methods Site of study The study was carried out at the College of V eterinary Science, S.V.

V eterinary University, Rajendranagar, Hyderabad, India (17 o 12 N, 78 o 18 E, 518 m above mean sea level).

These three processed NSC based complete diets were evaluated through growth (180 d) and metabolism trial using Nellore ram lambs in comparison to a conventional control ration containing concentrate mixture and chopped jowar ( Sorghum bicolor ) straw.

Experimental animals, housing and feeding management T wenty four healthy, Nellore ram lambs with an average body weight of 18.810.51kg were randomly allotted to 4 groups of six animals each in a Completely Randomized Design (CRD).

All the lambs were dewormed and vaccinated against enterotoxaemia prior to initiation of the study and maintained in well ventilated individual pens (4mx3m) with facilities for feeding and watering.

The processed diets were offered ad lib twice daily at 8.00 and 14.00h during the experiment period.

In case of control group quantity of concentrate offered was adjusted fortnightly according to body weight to meet the protein.

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