Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield
The experiment studied the effect of harvesting frequencies and varieties on yield, chemical composition and hydrogen cyanide content in cassava foliage. Foliage from three cassava varieties, K94 (very bitter), K98-7 (medium bitter) and a local (sweet), were harvested in three different cutting cycl...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2012-12-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/25-220.pdf |
| _version_ | 1818990703250767872 |
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| author | Khuc Thi Hue Do Thi Thanh Van Inger Ledin Ewa Wredle Eva Spörndly |
| author_facet | Khuc Thi Hue Do Thi Thanh Van Inger Ledin Ewa Wredle Eva Spörndly |
| author_sort | Khuc Thi Hue |
| collection | DOAJ |
| description | The experiment studied the effect of harvesting frequencies and varieties on yield, chemical composition and hydrogen cyanide content in cassava foliage. Foliage from three cassava varieties, K94 (very bitter), K98-7 (medium bitter) and a local (sweet), were harvested in three different cutting cycles, at 3, 6 and 9 months; 6 and 9 months and 9 months after planting, in a 2-yr experiment carried out in Hanoi, Vietnam. Increasing the harvesting frequency increased dry matter (DM) and crude protein (CP) production in cassava foliage. The K94 variety produced higher foliage yields than the other two varieties. Dry matter, neutral detergent fibre (NDF), acid detergent fibre (ADF) and total tannin content increased with months to the first harvest, whereas CP content decreased. Hydrogen cyanide (HCN) content was lower at the first harvest than at later harvests for all cutting cycles. At subsequent harvests the content of total tannins tended to decline, while HCN content increased (p<0.05). Chemical composition differed somewhat across varieties except for total tannins and ash. Dry matter, NDF, ADF and total tannins were higher in fully matured leaves, while CP and HCN were lower in developing leaves. |
| first_indexed | 2024-12-20T19:58:35Z |
| format | Article |
| id | doaj.art-3eff8393941c491e85ce86fb965c846f |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-20T19:58:35Z |
| publishDate | 2012-12-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-3eff8393941c491e85ce86fb965c846f2022-12-21T19:28:07ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172012-12-0125121691170010.5713/ajas.2012.1205222863Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage YieldKhuc Thi HueDo Thi Thanh Van0Inger Ledin1Ewa Wredle2Eva Spörndly3 National Institute of Animal Sciences, Hanoi, .Vietnam Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, P.O. Box 7024, SE-75007 Uppsala, .Sweden Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, P.O. Box 7024, SE-75007 Uppsala, .Sweden Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, P.O. Box 7024, SE-75007 Uppsala, .SwedenThe experiment studied the effect of harvesting frequencies and varieties on yield, chemical composition and hydrogen cyanide content in cassava foliage. Foliage from three cassava varieties, K94 (very bitter), K98-7 (medium bitter) and a local (sweet), were harvested in three different cutting cycles, at 3, 6 and 9 months; 6 and 9 months and 9 months after planting, in a 2-yr experiment carried out in Hanoi, Vietnam. Increasing the harvesting frequency increased dry matter (DM) and crude protein (CP) production in cassava foliage. The K94 variety produced higher foliage yields than the other two varieties. Dry matter, neutral detergent fibre (NDF), acid detergent fibre (ADF) and total tannin content increased with months to the first harvest, whereas CP content decreased. Hydrogen cyanide (HCN) content was lower at the first harvest than at later harvests for all cutting cycles. At subsequent harvests the content of total tannins tended to decline, while HCN content increased (p<0.05). Chemical composition differed somewhat across varieties except for total tannins and ash. Dry matter, NDF, ADF and total tannins were higher in fully matured leaves, while CP and HCN were lower in developing leaves.http://www.ajas.info/upload/pdf/25-220.pdf CrantzCassava FoliageHarvesting FrequencyVarietyYieldHCN |
| spellingShingle | Khuc Thi Hue Do Thi Thanh Van Inger Ledin Ewa Wredle Eva Spörndly Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield Asian-Australasian Journal of Animal Sciences Crantz Cassava Foliage Harvesting Frequency Variety Yield HCN |
| title | Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield |
| title_full | Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield |
| title_fullStr | Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield |
| title_full_unstemmed | Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield |
| title_short | Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield |
| title_sort | effect of harvesting frequency variety and leaf maturity on nutrient composition hydrogen cyanide content and cassava foliage yield |
| topic | Crantz Cassava Foliage Harvesting Frequency Variety Yield HCN |
| url | http://www.ajas.info/upload/pdf/25-220.pdf |
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