Assessment of chemical composition and in vitro rumen fermentation of tuber and crop peels

A. I. Muhammad, . and N. I. M Sani, . and N. N. Zainudin, . and N. I. M. Hemly, . and A. B. Khairul, . and A. A. Samsudin, . (2024) Assessment of chemical composition and in vitro rumen fermentation of tuber and crop peels. Malaysian Journal of Animal Science (Malaysia), 27 (2). pp. 65-79. ISSN 2520-2123

Tuber and root crops, rich in carbohydrates, are staple foods in Malaysia. However, their peels, often discarded, represent a potential feed resource for ruminants. This study assessed the nutritive value and in vitro gas production of various root and tuber crop peels as a sustainable feed ingredient for ruminant livestock. The root and tuber peels used in this experiment were potato peels (T₁), taro peels (T₂), sweet potato peels (T₃), cassava peels (T₄) and Chinese yam peels (T₅). The proximate analysis (moisture, dry matter (DM), organic matter (OM), crude protein (CP), crude fibre (CF), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL)) was conducted on the peels samples to evaluate their nutritional profiles. The results showed that potato peels showed the highest (P < 0.05) moisture, CF, NDF, and ADL contents compared to other root and tuber peels. Conversely, taro peels showed the highest CP, ADF, and ADL contents. Cassava peels had the highest DM and ash contents. Significant (P < 0.05) differences were observed in the metabolisable energy (ME) content, estimated based on digestible dry matter (DDM) content, among the various root and tuber peels. The ME content of Chinese yam peels was higher than that of other root and tuber peels. At the 4ᵗʰ, 6ᵗʰ, 8ᵗʰ, 10ᵗʰ, 12ᵗʰ, 24ᵗʰ, and 72ⁿᵈ hours of incubation, there was a significant (P < 0.05) difference in the gas produced by different peels in the in vitro rumen fermentation analysis. The taro peels produced the least gas, while Chinese yam produced the highest. In conclusion, cassava and Chinese peels could improve rumen fermentation efficiency based on their DM and ME content in terms of in vitro gas production.

Full text available from: Official URL: https://mjas.my/mjas-v2/rf/pages/journal/v27i2/5.%...

Abstract

Tuber and root crops, rich in carbohydrates, are staple foods in Malaysia. However, their peels, often discarded, represent a potential feed resource for ruminants. This study assessed the nutritive value and in vitro gas production of various root and tuber crop peels as a sustainable feed ingredient for ruminant livestock. The root and tuber peels used in this experiment were potato peels (T₁), taro peels (T₂), sweet potato peels (T₃), cassava peels (T₄) and Chinese yam peels (T₅). The proximate analysis (moisture, dry matter (DM), organic matter (OM), crude protein (CP), crude fibre (CF), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL)) was conducted on the peels samples to evaluate their nutritional profiles. The results showed that potato peels showed the highest (P < 0.05) moisture, CF, NDF, and ADL contents compared to other root and tuber peels. Conversely, taro peels showed the highest CP, ADF, and ADL contents. Cassava peels had the highest DM and ash contents. Significant (P < 0.05) differences were observed in the metabolisable energy (ME) content, estimated based on digestible dry matter (DDM) content, among the various root and tuber peels. The ME content of Chinese yam peels was higher than that of other root and tuber peels. At the 4ᵗʰ, 6ᵗʰ, 8ᵗʰ, 10ᵗʰ, 12ᵗʰ, 24ᵗʰ, and 72ⁿᵈ hours of incubation, there was a significant (P < 0.05) difference in the gas produced by different peels in the in vitro rumen fermentation analysis. The taro peels produced the least gas, while Chinese yam produced the highest. In conclusion, cassava and Chinese peels could improve rumen fermentation efficiency based on their DM and ME content in terms of in vitro gas production.

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Item Type:	Article
AGROVOC Term:	potato peels
AGROVOC Term:	carbohydrates
AGROVOC Term:	dry matter
AGROVOC Term:	crude protein
AGROVOC Term:	crude fibre
AGROVOC Term:	neutral detergent fibre
AGROVOC Term:	acid detergent fibre
AGROVOC Term:	chemical analysis
AGROVOC Term:	gas production
AGROVOC Term:	ruminants
Geographical Term:	Nigeria
Depositing User:	Ms. Azariah Hashim
Date Deposited:	29 Jul 2026 03:21
Last Modified:	29 Jul 2026 03:21
URI:	http://webagris.upm.edu.my/id/eprint/3558

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