Protein-Energy Synchronization Index of Various Energy Source of Feed Concentrate for Ruminants

ABSTRACT. The study aimed to determine the protein-energy synchronization (PES) index of the various energy source of feed concentrate in vitro, as a database for the preparation of ruminant rations based on the PES index. The research was conducted from May to August 2020. The research was carried out experimentally through three stages: proximate analysis, in vitro digestibility test, and index calculation. The materials used were rumen fluid of three Jawa Randu Goats, taken shortly after being slaughtered at Sokaraja Goat Slaughterhouse, and seven types of energy sources of feed concentrate. Each feedstuff was duplicated for 3 replications, then the digestibility data for organic matter and protein of each feedstuff were collected at the 2nd, 4th, 6th, 8th, 12th, 24th, and 48th hour by in vitro fermentation. The data collection results were then regressed and the results were included in the PES index equation. The variable measured was the PES synchronization index. The results showed that the PES index of rice bran was 0.54, rice polish 0.50, pollard 0.57, corn 0.87, dried cassava 0.94, dried cassava dreg 0.90, and bread flour 0.94. The study concluded that the energy source of feed concentrate are potential as the medium to the high category of PES index values in the preparation of ruminant rations, where corn, dried cassava, dried cassava dreg, and bread flour have a PES index in the high category, while rice bran, rice polish, and pollard in the medium category. (Indeks sinkronisasi protein-energi berbagai bahan pakan konsentrat sumber energi bagi ruminansia) ABSTRAK. Tujuan penelitian ini adalah menginventarisasi indeks sinkronisasi protein-energi (SPE) berbagai bahan pakan konsentrat sumber energy, sebagai basis data penyusunan ransum ruminansia berbasis indeks SPE secara in vitro. Penelitian dilaksanakan mulai bulan Mei hingga Agustus 2020. Penelitian dilaksanakan secara eksperimental melalui tiga tahap yaitu analisis proksimat, kecernaan in vitro, dan perhitungan indeks. Materi yang digunakan adalah cairan rumen 3 Kambing Jawa Randu yang diambil sesaat setelah disembelih di Rumah Potong Hewan Sokaraja, serta 7 jenis bahan pakan konsentrat sumber energi. Masing-masing bahan pakan diduplikasi sebanyak 3 ulangan, kemudian masing-masing diukur kecernaan bahan organik dan protein pada waktu fermentasi in vitro ke 2, 4, 6, 8, 12, 24 dan 48 jam. Data yang dikoleksi selanjutnya di uji regresi dan hasilnya dimasukkan dalam persamaan indeks SPE. Variabel yang diukur adalah indeks SPE. Hasil penelitian menunjukkan bahwa indeks SPE dedak sebesar 0,54, bekatul 0,50, pollard 0,57, jagung 0,87, gaplek 0,94, onggok kering 0,90 dan tepung roti 0,94. Penelitian menyimpulkan bahwa, konsentrat sumber energi memiliki potensi nilai indeks sinkronisasi protein-energi pada kategori sedang hingga tinggi dalam penyusunan ransum ruminansia. Jagung, gaplek, onggok kering dan tepung roti memiliki indeks sinkronisasi protein-energi pada kategori tinggi, sedangkan dedak, bekatul dan pollard pada kategori sedang.

Volatile fatty acids and methane production in dairy cow ration based on protein-energy synchronization index with a meals protein source

The study was aimed to examine the production of volatile fatty acids (VFA) and methane (CH4) in rations based on protein-energy synchronization index (PES) using different meals protein sources (MPS). The study was conducted experimentally with in vitro techniques. The factorial completely randomized design (CRD) was used to examine six types of treatment rations originating from a combination of 3 PES index and two types of MPS, each repeated four times so that there were a total of 24 experimental units. The results showed that the interaction of the SPE index had no significant effect on the production of partial VFA, but had a significant effect on the acetate: propionate (A: P) ratio and CH4 production. The analysis of honestly significant different (HSD) results showed that the lowest A: P ratio and CH4 were found in R1. The orthogonal test shows that coconut and soybean meal had a quadratic effect on the A: P ratio and CH4. It concluded that the best PES index to optimize VFA and minimize CH4 production was at the index 0.6-0.61 with soybean meal as protein source supplementation.

Synchronization Protein-Energy Index of Various Forages for Dairy Livestock: an In Vitro Study

The present study inventoried the protein-energy synchronization (PES) index of various types of grass. The study was conducted using in vitro techniques with material 5 types of grass (elephant, king, dwarf elephant, guinea, and setaria) and rumen fluid of the Friesian Holstein (FH). The PES index is calculated based on the average degradation of g protein and Kg organic matter (OM) per hour at the time of observation of 2nd, 4th, 6th, 8th, 12th, 24th, 48th, and 72nd hours. The hourly degradation rates were analyzed by linear regression to obtain the average hourly degradation rate. The results were included in the PES index calculation formula and discussed descriptively. This study found that all five grass had almost uniform nutritional value. Regression analysis results show a different equation, but with a high coefficient of determination (> 90%) on all types of grass. The PES index obtained in elephant, king, dwarf elephant, guinea, and setaria grass are 0.72, 0.66, 0.69, 0.58, and 0.68. The study concluded that elephant grass has a PES index at a high level, while king, dwarf elephant, guinea, and setaria grass at medium level for compiling dairy rations.

Harnessing the Full Potential of Industrial Demand-Side Flexibility: An End-to-End Approach Connecting Machines with Markets through Service-Oriented IT Platforms

The growing share of renewable energy generation based on fluctuating wind and solar energy sources is increasingly challenging in terms of power grid stability. Industrial demand-side response presents a promising way to balance energy supply and consumption. For this, energy demand is flexibly adapted based on external incentives. Thus, companies can economically benefit and at the same time contribute to reducing greenhouse gas emissions. However, there are currently some major obstacles that impede industrial companies from taking part in the energy markets. A broad specification analysis systematically dismantles the existing barriers. On this foundation, a new end-to-end ecosystem of an energy synchronization platform is introduced. It consists of a business-individual company-side platform, where suitable services for energy-oriented manufacturing are offered. In addition, one market-side platform is established as a mediating service broker, which connects the companies to, e.g., third party service providers, energy suppliers, aggregators, and energy markets. The ecosystems aim at preventing vendor lock-in and providing a flexible solution, relying on open standards and offering an integrated solution through an end-to-end energy flexibility data model. In this article, the resulting functionalities are discussed and the remaining deficits outlined.

Volatile Fatty Acids and Methane Profile of Dairy Cattle Ruminal Fluid was Gived Legumes in Ration Based on Synchronization Protein-Energy Index

An experiment was aimed to assess the use of the legumes as a source of protein feedstuff and levels of protein-energy synchronization (PES) index in the diet of dairy cattles on volatile fatty acids (VFA) and methane (CH4) profile. The research was applied in In vitro techniques used a completely randomized design (CRD), with factorially pattern (2x3), the first factor was the two species of legumes (Sesbania and Leucaena) and the second factor was the three level of the PES index (0.4, 0.5, and 0.6), there were 6 treatment combinations and each was 4 replicates. The results showed that interaction between legumes with PES index was not significantly affected (P>0.05) on all variable. Legumes was not significantly affected (P>0.05) on all variables and PES index was significantly affected (P<0.05) on propionate, A:P ratio, and methane. The study concluded that the use of turi and lamtoro leaves combined with the protein-energy synchronization index (PES) at medium level (0.5) could increasing the production of VFA, especially propionate, suppressing A:P ratio and decreasing methane production.