Abstract
Slaughterhouse waste cause environmental problems. Rumen content comprise a lot of enzymes of potential bacteria as bio–activators in the process of making goat manure fertilizer. The study aimed to evaluate the quality of goat manure fertilizer added with rumen content. The materials used were goat manure and cattle rumen contents. The research method uses a Completely Randomized Designed (CRD). The percentages of cattle rumen contents treatments i.e. 0 %, 5 %, 10 % and 15 %. The variables measured were Nitrogen (N), Phosphor (P), Potassium (K), Carbon organic, C/N ratio and moisture content. The results showed, the addition of rumen contents had a very significant effect (p < 0.01) on C organic, P, N, and C/N, but had no significant (p > 0.05) on K and moisture content. The results showed that the best treatment was addition of 15 % rumen, that had N 1.59 %, P 0.15 %, K 0.72 %, C organic 30.60 %, C/N 19.24 %, and moisture content 45.86 %. This content had fulfilled SNI 19–7030–2004 for goat manure fertilizer. It could be concluded that giving rumen contents could increase N, P, K, C organic and decrease C/N and moisture content.
Highlights
One of the slaughterhouse wastes is the contents of the rumen, in the form of grass that has not been fermented and fully digested by the cattle
The rumen functions as a bio–activator to accelerate the process of maturation of organic compost [1], because the rumen contents comprised many microorganisms, including bacteria (109 mL–1 to 1012 mL–1 rumen fluid), protozoa (105 mL–1 to 106 mL–1 liquid rumen), and a number of fungi [2]
The research variables measured were the content of N, P, K, C organic, C/N ratio, and moisture content
Summary
One of the slaughterhouse wastes is the contents of the rumen, in the form of grass that has not been fermented and fully digested by the cattle. The rumen contents of ruminants slaughterhouse such as cattle and goats were usually dispose, even though it is rich in nutrients. The waste is very potential when used for the process of making liquid and solid organic fertilizer, including as a bioactivator in the process of making goat manure fertilizer. The rumen contents of cattle only have a C/N ratio between 6.44 to 13.71 [3] and the value of the C/N ratio of goat manure is generally still above 30. Based on the description above, it was necessary to study the quality of goat manure fertilizer with rumen contents addition as a bio–activator for fermentation
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