BRITO, C. M.

FERRARINI, A.

FRANÇA, M. I.

LIMA, P. G. C.

SOUZA, G. A.

English

Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná)

ELEPHANT GRASS SILAGE WITH ADDING OF SOYBEAN HULLS  LIMA,P.G.C.1 ; SOUZA, G. A.2 ; FRANÇA, M. I.1 ; FERRARINI, A.3 ; BRITO, C. M.3  1Mestrando do Curso de Pós Graduação em Ciências Veterinárias - UFPR;  2Departamento de  Zootecnia, UFPR;  3Laboratório de Nutrição Animal - UFPR.  The  objective of the  present research is to study a modification  on the  process of preparation of  elephant grass silage (Pennisetum purpureum Schumach), without prewilting, when the plant possesses  a large amount of water. The low content of dry matter at the vegetative stage of this forage is the major problem for the fermentative process. The increase of dry matter by  the addition of soybean hulls,  a residue of low price with a  low content of water, has the objective to control the undesirable fermentation through  osmotic pressure, by inhibiting the Clostridium bacteria avoiding, this way, the  increase of  butyric acid production, which promotes the spoiling process on the high humidity silage. For this experiment it has been used  napier grass with 56 days of sprout, from  a farm from  Garuva, at  Santa Catarina  sea coastal region. As experimental silos PVC (100 mm) tubs adapted with Brunsen type valves  were used. The experimental design used was a randomised  complete block with 4 replications  evaluating the amount of elephant grass silage and  adding different levels of soybean hulls in 5 different treatments: (T1 – 10%, T2 – 15%, T3 – 20%, T4 – 25% AND T5 – 30% ), compared with the pre-wilting silage at the sun by 6 hours, (T6). The following parameters were evaluated: Dry Matter (DM), Crude Protein (CP), Total Digestive Nutrients (TDN), Neutral Detergent Fiber (NDF), Acid Detergent Fiber (AFD), and pH. The DM and CP were assayed  as described in AOAC (1970). The TDN was calculated according the  formula mentioned by KEARL (1982). For the NDF and ADF it was followed the method described by VAN SOEST et al. (1971). The pH was assayed by means of  direct reading on a digital pH-meter. The results showed significant differences (p<0.05) on most of the evaluated parameters. The silages that received addition of soybean hulls were superior in quality than the pre-wilting silage.  Key Words: Elephant Grass, Silage, Dry Matter, Additive,  Soybean Hulls.   

ELEPHANT GRASS SILAGE WITH ADDING OF SOYBEAN HULLS

https://revistas.ufpr.br/veterinary/article/download/3951/3191

ELEPHANT GRASS SILAGE WITH ADDING OF SOYBEAN HULLS

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Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná)