The purpose of this research was to formulize the best sakura block enriched with earthworm flour by utilizing palm kernel cake as a substitute for corn in optimizing rumen fermentation products and nutrient digestibility in vitro. This research used a completely randomized design with 6 treatments and 3 replications namely the commercial sakura block as control (P0), and sakura block with palm kernel cake and earthworm flour of 0% (P1), 2% (P2), 4% (P3), 6% (P4) and 8% (P5). Result: The findings of the study showed that the higher the earthworm flour in the sakura block, the higher the crude protein content and the total digestible nutrient of the sakura block. However, optimal NH 3 , VFA, acetate, propionate, and butyrate were obtained in the treatment of sakura block with palm kernel cake and 6% earthworm flour. Although the average digestibility of dry matter, organic matter, and protein in vitro in the research was quite high, there was no difference between treatments. It was concluded that sakura block with palm kernel cake and 6% earthworm flour resulted in the best to optimize rumen fermentation products.

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This study aims to evaluate milk production, fat content, and protein content of Friesian Holland (FH) dairy cow's milk by giving Sakura block at the final lactation of FH cow. The design used was the Latin Square Design (LSD), with treatments of P0 (0 Sakura blocks), P1 (300 gr Sakura blocks), P2 (600 gr Sakura blocks), and P3 (900 gr Sakura blocks). This study involved four dairy cows for four periods of which period consisted of 10 treatment days, where the last 3 days of each period were the milk sample collection. Milk production and feed consumption were measured and weighed daily. The results showed that the treatment had a significant effect (P <0.05) on the consumption of dry matter ratio and no significant effect (P> 0.05) on milk production, fat content, and milk protein.

The aim of this research was to evaluate the dry matter and organic matter<br />digestibility in vivo of Bali cattle diet that supplemented with fermented concentrate ration based from palm oil sludge and several local feed sources. Fifteen Bali cattles with 2 years old and the range of live weight 184,5±3,63 kg were distributed into three treatments and five replication in Completely Randomized design. The treatment was the level of concentrate supplementation, They were P1 (10kg/day), P2(7,5kg/day) and P3(5kg/day). The forage and the rice straw were adjusted as much as 10 kg/day and 1 kg/day, respectively. The composition of fermented concentrate consisted of palm oil sludge (70%), rice bran (10%), coffee husk (10% ) and coconut press fiber (10%). As bioactivator used”Bionak”as much as 0,3%. The an aerob fermentation took time a week. The result showed that up to the highest level (10kg/day) the supplementation of fermented concentrate ration enhanced the consumption and the digestibility of the whole rations.

This study aimed to evaluate cow feces and sheep as media for earthworm's (Pheretima, sp) growth and mortality. The design used in this study was Completely Random Design (CRD) consisting of 5 treatments and 5 replications, each replication containing of 10 earthworms Pheretima, sp aged 2-3 days with the treatment given were: P1 = 50% rice husk + 50% feces (100% cow feces), P2 = 50% rice husk + 50% feces (75% cow feces + 25% sheep feces) , P3 = 50% rice husk + 50% feses (50% cow feces + 50% sheep feces), P4 = 50% rice husk + 50% feces (25% cow faeces + 75% sheep feces), P5 = 50% husk Rice + 50% feses (100% sheep feces). The results showed that the higher used of sheep feces can reduce weight gain and increase the mortality of earthworms (Pheretima sp). The use of 100% cow feces as a media produced the best growth of all treatments.Key words : earthworm, growth, media ratio, mortality ABSTRAKPenelitian ini bertujuan untuk mengevaluasi imbangan feses sapi dan domba sebagai media untuk pertumbuhan dan mortalitas cacing tanah (Pheretima sp). Rancangan yang digunakan dalam penelitian ini yaitu Rancangan Acak Lengkap (RAL) yang terdiri dari 5 perlakuan dan 5 ulangan, masing-masing ulangan berisi 10 ekor cacing tanah Pheretima sp berumur 2-3 hari dengan perlakuan yang diberikan antara lain ; P1 = 50% sekam padi + 50% feses (100% feses sapi), P2 = 50% sekam padi + 50% feses (75% feses sapi + 25% feses domba), P3 = 50% sekam padi + 50% feses (50% feses sapi + 50% feses domba), P4 = 50% sekam padi + 50% feses (25% feses sapi + 75% feses domba), P5 = 50% sekam padi + 50% feses (100% feses domba). Hasil penelitian menunjukkan bahwa semakin tinggi penggunaan feses domba dapat menurunkan pertambahan bobot badan dan meningkatkan mortalitas cacing tanah (Pheretima sp). Penggunaan 100% feses sapi sebagai media menghasilkan pertumbuhan terbaik dari semua perlakuan. Kandungan gizi pada cacing tanah sangatlah tinggi dibandingkan dengan tepung ikan. Kadar protein cacing tanah berkisar antara 64-76%, sedangkan tepung ikan hanya memiliki kandungan protein sekitar 58%, selain itu memiliki kadar lemak yang cukup rendah sekitar 7-10% serta kandungan lain yang terdapat pada cacing tanah diantarnya 0,55% kalsium, 1% fosfor, dan 1,08% serat kasar (Maulida, 2015).