@article{Cardona Iglesias_Mahecha Ledesma_Angulo Arizala_2017, title={Effect on of in vitro fermentation of mixture of Tithonia diversifolia, Cenchrus clandestinum and polyunsaturated fats}, volume={28}, url={https://revistas.ucr.ac.cr/index.php/agromeso/article/view/25697}, DOI={10.15517/ma.v28i2.25697}, abstractNote={<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>The aim of this study was evaluated by </span><span>in vitro</span><span>, the effect of mixing wild sunflower (</span><span>Tithonia diversifolia</span><span>), kikuyu (</span><span>Cenchrus clandestinum</span><span>) and concentrated feed, with the addition of polyunsaturated fatty acids (AGPI) on the production of methane (CH</span><span>4 </span><span>ml/g MSd), dry matter digestibility (%DIVMS) and production of volatile fatty acids (AGV). The research was conducted in NUTRILAB laboratory (Medellin, Colombia) in September 2015. Three </span>combinations of AGPI rich lipid sources were used with a total maximum inclusion level corresponding to 3% of incubated dry matter. Combinations of lipid sources were: SAGPI1: 0.5% soya oil, 0.5% sish oil, 2% rich in omega 3 bypass fat. SAGPI2: 1% Soya oil, 0.5% fish oil, 1.5% bypass fat rich in omega 3. SAGPI3: 2.5% Soya oil, 0.5% fish oil. A source of bypass fat (GSP) was also used. The results were processed using pre-planned test comparisons through the PROC MIXED-SAS.The methane production in vitro decreased (p<0.05), while the dry matter digestibility increased (p<0.05) 24 and 48 hours after wild sunflower was include and / or AGPI or both into the mixtures. In the molar ratio of AGV (%), acetic acid showed an increased presence. The inclusion of forage like wild sunflower and sources of AGPI supplementation in cattle, could be a strategy to reduce methane emissions without causing a detriment to the ruminal fermentation. </p></div></div></div>}, number={2}, journal={Agronomía Mesoamericana}, author={Cardona Iglesias, Juan Leonardo and Mahecha Ledesma, Liliana and Angulo Arizala, Joaquín}, year={2017}, month={Apr.}, pages={405–426} }