Dried Poultry Manure as Non-Protein Nitrogen  Additive of Napier Grass (Pennisetum purpureum Schumach) Silage Fed to Sheep

Sulpecio  C. Bantugan,; Lolito  C. Bestil,; Clarita  E. Morbos,

Dried Poultry Manure as Non-Protein Nitrogen Additive of Napier Grass (Pennisetum purpureum Schumach) Silage Fed to Sheep

Clarita E. Morbos | Sulpecio C. Bantugan | Lolito C. Bestil

Abstract:

he study was conducted to describe the physical characteristics of napier grass silage added with dried poultry manure {DPM) as non-protein N source, and to assess its acceptability and digestibility in sheep. Three types of silages were evaluated: Tl - napier grass alone, T2 - napier grass + DPM (at a ratio containing 10% crude protein), and T3 - napier grass + DPM (at a ratio containing 12% crude protein). These were stored in airtight plastic drum silos for 45 days at room temperature. After evaluation, the silages were tested with 9 male growing sheep for intake and digestibility measurements arranged in completely random fashion. Physical evaluation in terms of color, smell, and texture of the 3 silages showed no significant differences, and all showed good quality silage characteristics. However, significantly higher pH level (p<0.05) approaching normal rumen pH was observed in silages containing DPM {T2 and T3) compared to that without {Tl). Chemical analysis showed significantly higher dry matter {DM) and crude protein {CP) contents in T2 and T3 silages than in Tl. The OM content, however, was significantly reduced with the addition of DPM {T2 and T3) than without {Tl) while acid detergent fiber {ADF) and neutral detergent fiber {NDF) contents showed no significant differences. Nutrient intakes significantly increased with silages containing DPM {T2 and T3) while increases in nutrient digestibility by sheep for the 3 silages showed no significant differences in all parameters measured. The addition of DPM to napier grass silage to contain l Oto 12% CP is recommended to increase CP and DM contents and improve nutrient intakes without affecting nutrient digestibility.

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