Abstract
Pineapple is a commercially important fruit crop grown in Asian and African countries. Pineapple fruit residue (PFR) accounts for more than 65 % of the processed fruits, and its disposal is a major problem due to its high moisture and sugar content predisposing it to fungal growth and spoilage. Silage technique was adopted to address this problem, and the PFR silage was evaluated for its feeding value. It was observed that on 15th day, the pH of PFR silage was 4.2–4.3 and lactic acid content was 6–8 % (DM basis). Combination of 4 parts leafy crown and 1 part peels/pomace was found very ideal to achieve moisture content of 65–70 % and produced a good quality silage with minimum fungal count (<3–4 colony forming units) on 15th day of ensiling. Nutritive value in terms of energy and minerals was superior to maize green fodder. Feeding trial in two groups of sheep with 10 numbers in each group fed total mixed ration (TMR) comprising 62 % PFR/maize silage and 48 % concentrate mixture (DM basis) for 75-day period did not show any adverse effects on nutrient utilization (DM, CP, NDF, ADF), serum biochemical (total protein, creatinine, urea nitrogen, SGOT, SGPT), and mineral profile (Ca, P, Mg, Cu, Zn, Mn) and supported a daily growth rate of 140 g. The overall performance was similar to those sheep fed TMR with maize green fodder silage. Feeding PFR silage replacing hybrid napier green fodder in two groups of cows with eight in each group showed an improvement in average daily milk yield by 3.0 lit per cow and fat content by 0.6 U fed PFR silage-based TMR as compared to cows fed hybrid napier green fodder-based TMR. In both studies (sheep or cows), there was no evidence of metabolic or health-related disorders indicating that PFR silage was effectively utilized. Pineapple fruit residue that was hitherto wasted was successfully converted to silage and was found to be a valuable alternative to conventional green fodder. Ensiling of PFR not only improved the economics of feeding but also helped in overcoming the disposal problem.
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The financial support of the National Bank for Agriculture and Rural Development (NABARD), Bangalore, and help of Director, NIANP in conducting this study is thankfully acknowledged.
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There is no conflict of interest among the authors and the funding agency involved in this study.
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Gowda, N.K.S., Vallesha, N.C., Awachat, V.B. et al. Study on evaluation of silage from pineapple (Ananas comosus) fruit residue as livestock feed. Trop Anim Health Prod 47, 557–561 (2015). https://doi.org/10.1007/s11250-015-0762-2
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DOI: https://doi.org/10.1007/s11250-015-0762-2