What is it about?
Asymptotic GP, GP rate, CH4 concentration/g acid detergent fiber (ADF), dry matter (DM) degradability (DMD), short chain fatty acids (SCFAs), and ruminal bacteria population increased with increasing concentrate level in the TMR. Methane production/g DM and NDF was higher for 50C:50F TMR. Sunflower oil reduced asymptotic GP, lag time, CH4 production/g ADF, ammonia−N (NH3−N), and SCFA. All additives at 2% increased DMD, NDFD and ADFD, SCFA, and bacteria population. Supplementation of TMR, containing different concentrate:forage ratios, with sunflower oil, N. oculata, and sunflower oil/N. oculata mixture at different doses modified in vitro GP, CH4 production, and nutrient degradability.
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Why is it important?
Manipulation of ruminal microbial ecosystems and fermentation to mitigate methane (CH4) emission and improve nutrient utilization for improved and sustainable ruminant production is one of the major concerns of ruminant nutritionists.
Perspectives
The hypothesis was that different rations (substrates) with different concentrate:forage ratios and characteristics (different energy and fiber contents), and different sources of dietary fats would make some changes in the ruminal microorganisms and fermentation, resulting in changed dietary nutritive value and fermentation patterns.
Prof. Dr. Abdelkader Mahmoud Kholif
Read the Original
This page is a summary of: Sunflower Oil and Nannochloropsis oculata Microalgae as Sources of Unsaturated Fatty Acids for Mitigation of Methane Production and Enhancing Diets’ Nutritive Value, Journal of Agricultural and Food Chemistry, February 2018, American Chemical Society (ACS),
DOI: 10.1021/acs.jafc.7b04704.
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