Effects of variety, sowing season and maturity stage on ruminal phosphorus release from whole maize stover and its morphological fractions.

作者: S. X. Tang , L. X. Sheng , C. S. Zhou , Z. L. Tan , H. Y. Liao

DOI: 10.1111/J.1439-0396.2009.00974.X

关键词: Animal scienceFodderStoverBiologyPhosphorusForageAnimal nutritionSowingAgronomyHuskPhosphorus metabolism

摘要: An in situ degradation technique was used to investigate the effects of variety, season and maturity stage on ruminal Phosphorus (P) release from whole maize stover morphological fractions five varieties (conventional maize, CM; sweet SM; waxy WM; high oil HOM; fodder FM). Maize plants were harvested 2005, 17 31 days after tasselling manually separated into leaf blade, sheath, stem husk. Results showed that values rapidly released P (a), slowly (b), rate constant for fraction b (c) effective disappearance (ED) significantly influenced by sowing (p HOM (87.9%) > CM (87.0%) SM (86.9%) WM (83.9%). Advanced increased sheath (88.2%) blade (85.2%) husk (84.9%). In conclusion, most could be rumen. The potential pollution resulting excretion faeces may alleviated, when is largely as main forage source ruminants.

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