Proceedings of the 11th International Conference of Innovation in Animal Science (ICIAS 2024)

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Metabolisable Energy Values of Beef Cattle Ratio Determined Using In Vitro Gas Production Technique

Authors
Kusmartono Kusmartono1, *, Mashudi Mashudi1, Poespitasari Hazanah Ndaru1, Aprilia Dwi Kartika1, Muhammad Rifki1, Kania Ainul Mardhiah1
1Faculty of Animal Science, Universitas Brawijaya, Malang, 65145, Indonesia
*Corresponding author. Email: kusmartono_ansi@ub.ac.id
Corresponding Author
Kusmartono Kusmartono
Available Online 31 October 2025.
DOI
10.2991/978-94-6463-880-6_40How to use a DOI?
Keywords
concentrate feed; forage; gas production; metabolizable energy; nutritional content
Abstract

This study aimed to evaluate the metabolizable energy (ME) value of beef cattle rations using the in vitro gas production technique. Rumen fluid samples were collected from a slaughterhouse in Malang City and analyzed at the Animal Nutrition and Feed Laboratory, Faculty of Animal Science, Universitas Brawijaya. Nutritional analysis of the forage, specifically elephant grass, showed a dry matter (DM) content of 30.79%, organic matter (OM) 78.29%, crude protein (CP) 6.25%, ether extract (EE) 2.40%, crude fiber (CF) 30.91%, and nitrogen-free extract (NFE) 38.73%. The concentrate feed contained higher nutrient values, with DM 88.51%, OM 88.54%, CP 12.07%, EE 3.48%, CF 18.45%, and NFE 54.54%. Four different rations were formulated with varying forage-to-concentrate ratios. Among them, the T2 treatment (40% elephant grass and 60% concentrate) produced the highest total gas (91.6 ± 2.80 ml/500 mg DM) and ME value (8.7 MJ/kg DM), significantly outperforming the T1 treatment (100% elephant grass). Treatments T3 and T4 also showed improved results, but T2 remained the most effective. These findings indicate that a 40:60 ratio of elephant grass to concentrate optimizes rumen microbial activity, leading to higher gas production and metabolizable energy.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 11th International Conference of Innovation in Animal Science (ICIAS 2024)
Series
Advances in Biological Sciences Research
Publication Date
31 October 2025
ISBN
978-94-6463-880-6
ISSN
2468-5747
DOI
10.2991/978-94-6463-880-6_40How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Kusmartono Kusmartono
AU  - Mashudi Mashudi
AU  - Poespitasari Hazanah Ndaru
AU  - Aprilia Dwi Kartika
AU  - Muhammad Rifki
AU  - Kania Ainul Mardhiah
PY  - 2025
DA  - 2025/10/31
TI  - Metabolisable Energy Values of Beef Cattle Ratio Determined Using In Vitro Gas Production Technique
BT  - Proceedings of the 11th International Conference of Innovation in Animal Science (ICIAS 2024)
PB  - Atlantis Press
SP  - 361
EP  - 367
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-880-6_40
DO  - 10.2991/978-94-6463-880-6_40
ID  - Kusmartono2025
ER  -