Production of alfalfa hay under different drying methods

Revista Brasileira de Zootecnia

Marcela Abbado Neres²  Deise Dalazen Castagnara¹  Eduardo Eustáquio Mesquita²  Maximilliane Alavarze Zambom²  Leiliane Cristine De Souza¹  Paulo Sérgio Rabello De Oliveira²  Clóves Cabreira Jobim¹ 

[1] ,Unioeste Centro de Ciências Agrárias Marechal Cândido Rondon PR

关键词: drying in field;    haymaking;    in vitro digestibility;    fenação;    digestibilidade in vitro;    secagem campo;   

DOI  :  10.1590/S1516-35982010000800008

来源: SciELO

【 摘 要 】

This trial aimed at determining the dehydration curve at nine times (0, 3, 6, 9, 24, 27, 30, 33 and 46 hours after cuting of the plants); the leaf/stem ratio and number of leaves per stem in alfalfa submitted to four managements during the drying process. It was also evaluated the bromatologic composition and in vitro digestibility of the dry matter and cell wall of alfalfa hay before storage. The drying methods applied for alfalfa were the following: drying in the field until 50% DM and drying conclusion in an airy shed; drying in the field without turning; drying with only one turning and drying with two turnings. The experimental design was completely randomized with four drying methods and five replications. Leaf dehydration was faster when compared to the stems in all drying methods. Drying in the shed promoted the lesser re-hydration of the plants at night due to dew. It was also verified that alfalfa hays that remained under the sun and were turned showed the worst quality with reduction in crude protein contents and increase in NDF, ADF, NDIN and ADIN. However, in vitro dry matter digestibility and cell wall digestibility did not suffer any alteration because of the different dehydration methods (69.79 and 41.39%, respectively). There is a market fall of leaves and a reduction on the number of leaves per stem with the turnings.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License