Title | An increase in dietary lipid content from different forms of double-low rapeseed reduces enteric methane emission in Datong yaks on the Qinghai-Tibetan Plateau. |
Publication Type | Journal Article |
Year of Publication | 2020 |
Authors | Zhang, Q, Degen, A, Hao, L, Huang, Y, Niu, J, Wang, X, Chai, S, Liu, S |
Journal | Anim Sci J |
Volume | 91 |
Issue | 1 |
Pagination | e13489 |
Date Published | 2020 Jan |
ISSN | 1740-0929 |
Abstract | Enteric methane (CH ) emission in cattle generally decreases by approximately 1 g/g dry matter intake (DMI) with an increase in dietary lipids of 10 g/kg dry matter (DM). The effect of dietary lipids on CH emission in yaks has not been reported and is the subject of this study. Four Datong yaks were used in a 4 × 4 Latin-square design in which the four treatments included restricted intakes of double-low rapeseed differing in form and lipid (ether extract-EE) content: (a) rapeseed meal (EE 32.6 g/kg DM); (b) rapeseed meal and rapeseed cake (EE 45.8 g/kg DM); (c) rapeseed meal and whole cracked rapeseed (EE 54.5 g/kg DM) and (d) rapeseed meal and rapeseed oil (EE 62.7 g/kg DM). The digestibility of feed components did not differ among treatments. The ruminal total volatile fatty acids (p = .082) and acetic acid (p = .062) concentrations tended to be lowest in yaks consuming the diet with highest lipid content. In addition, CH production was lowest in this group (p = .004), and declined by 1.75 g/g DMI per 10 g/kg DM reduction in dietary lipid content, a rate substantially faster than in cattle. |
DOI | 10.1111/asj.13489 |
Alternate Journal | Anim Sci J |
PubMed ID | 33314599 |
Grant List | 2018YFD0502300 / / National Key Research and Development Program of China / 2016YFD0500504 / / National Key Research and Development Program of China / 2019QHSKXRCTJ01 / / Qinghai Provincial Science and Technology Association Young and Middle-aged Technological Talent Support Project / 31660673 / / National Natural Science Foundation of China / 1_7 / / CAS "Light of West China" Program / 2020-ZJ-Y08 / / Reward Project of Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province / |
An increase in dietary lipid content from different forms of double-low rapeseed reduces enteric methane emission in Datong yaks on the Qinghai-Tibetan Plateau.
sysed