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12 articles for “volatile fatty acids”
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Research ArticleOpen accessPhrase in the titleInvestigation of the Photoheterotrophic Hydrogen Production of Rhodobacter sphaeroides KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen HeadspaceRuby Lynn G. Ventura, Jey-R S. Ventura, Young-Sook OhIn this study, the photo fermentative H2 production of Rhodobacter sphaeroides KCTC 1434 was investigated using acetate, propionate and butyrate under argon and nitrogen headspace gases. The highest H2 yield and Substrate Conversion Efficiency (SCE) were observed from butyrate (8.84 mol H2/mol butyrate consumed, 88.42% SCE) and propionate (6.10 mol H2/mol propionate consumed, 87.16% SCE) under Ar headspace. Utilization of … …American Journal of Environmental Sciences, Vol. 12, Issue 6 · 30 Nov 2016 · 9,058 accessesView PDFCite
Research ArticleOpen accessIn the keywordsInfluences of Feed Additives on in vitro Volatile Fatty Acid ProductionA. V. Duncan, A. Woldeghebriel, C. Privott et al.This study investigated effects of the feed additives nitrate and fumarate alone or in combination on in vitro Volatile Fatty Acid (VFA) production. Rumen fluid was collected from Holstein-Friesian cattle averaging 650 kg in BW (body weight) offered 11.4 kg d-1 per animal of concentrate diet containing equal amounts of soybean meal, whole cottonseed and ground corn once a day … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 1 · 30 Dec 2014 · 7,227 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Diurnally Cyclic Temperature on the Performance of a Continuous Mix Anaerobic DigesterAbdel E. Ghaly, Mariam T. Al HattabProblem statement: Concentrated livestock production is a major contributor to environmental problems through the production of large quantity of husks on relatively small land area. Anaerobic digestion represents a valuable means of cover by these husks into methane while reducing manure pollution problems. Methodology: An experimental apparatus, including data acquisition and control system, was developed and used to investigate the … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 4 · 19 Jan 2012 · 9,226 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Effect of Rumen Acid Load on Postpartum Performance and Blood Metabolic Responses in Transition Holstein CowsSadjad Danesh Mesgaran, Alireza Vakili, Alireza Heravi Moosavi, Ghasem KoolabadiProblem statement: The transition period is the most stressful time in the production cycle of a dairy cow because of depressed feed intake, endocrine and metabolic changes at parturition. The aim was to determine the effect of rumen acid load on postpartum performance and metabolic parameters in transition Holstein cows. Approach: The Acidogenicity Values (AV) of the diets were determined … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 1 · 25 May 2011 · 7,438 accessesView PDFCite
Literature ReviewOpen accessIn the abstractRumen Microbiota Mysteries: Nutrition, Function, and its Impact on Livestock ProductivityHamdi Mayulu, Marry ChristiyantoRuminants are important herbivores in the global food system, serving as primary producers of meat and milk. The productivity of these animals is influenced by the functionality of their digestive organs, namely rumen. The digestion, metabolism and nutrients absorption in the rumen epithelium enhance the host defende mechanisms mechanisms, promoting health and productivity in ruminants. Therefore, this review aimed to … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 4 Aug 2025 · 4,069 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving Rumen Fermentation by Inoculation of Cellulolytic Bacteria Isolated from Anoa, Bison, Muntjak and Timor Deer FaecalSri Suharti, Erika Julian Cahyani, Iksan Qodri Pramarta et al.Tropical endemic herbivores such as anoa (Bubalus depressicornis), bison (Bos javanicus), muntjak (Muntiacus muntjak), and Timor deer (Rusa timorensis), can digest various types of fibrous feed because their digestive tract has high cellulolytic bacteria and those can be found in their feces. Previously, we isolated and identified cellulolytic bacteria from the feces of anoa, bison, muntjak, and Timor deer. This … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 4 · 30 Oct 2023 · 5,651 accessesView PDFCite
Research ArticleOpen accessIn the abstractSupplementation of Prill Fat Derived from Palm Oil on Nutrient Digestibility and Dairy Cow PerformanceLolita Udin Riestanti, Despal, Yuli RetnaniPrill fat is a hydrogenated vegetable oil which contains more than 85% palmitic acid with a high melting point. Due to this reason, it does not melt at rumen temperature and bypass rumen degradation. This study was aimed to determine the optimum level of prill fat (86% palmitic acid) supplementation in dairy ration on fermentation characteristics, feed digestibility, milk production, … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 2 · 1 Jul 2021 · 8,750 accessesView PDFCite
Research ArticleOpen accessIn the abstractIn vitro Rumen Fermentability of the Pelleted Feed Containing Water Spinach (Ipomoea aquatica)Himmatul Hasanah, Eko Pangestu, Ali Agus, Joelal AchmadiAn in vitro technique based on two stages of batch culture was used to clarify fermentability and digestibility of pellet feed containing water spinach (Ipomoea aquatica). The portion of Pennisetum purpureum in the pellet feed was substituted with Ipomoea aquatica at respective levels of 0% (T1), 20% (T2), 40% (T3) and 60% (T4). The treatments were allocated in a completely … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 1 · 27 Mar 2020 · 7,559 accessesView PDFCite
Research ArticleOpen accessIn the abstractChemotaxonomy of Indonesian Citrus maxima based on Leaf Essential OilsRatna Susandarini, Rugayah, Lauretius Hartanto Nugroho, Siti SubandiyahPummelo (Citrus maxima) is one of true citrus species originated from South East Asian regions. Pummelo is known as having high morphological diversity, but lacking of comprehensive publications documenting chemical diversity. The objectives of this study were to reveal essential oil diversity and its implication on the chemotaxonomy of the species. Leaves from forty individual plants were collected from seven … …OnLine Journal of Biological Sciences, Vol. 16, Issue 1 · 29 Dec 2015 · 8,098 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Replacement of Soybean meal by Dried Tomato Pomace on Rumen Fermentation and Nitrogen Metabolism in Beef CattleC. Yuangklang, K. Vasupen, S. Wongsuthavas et al.Problem statement: Dried tomato pomace may be considered as an alternative feedstuff in ruminant nutrition. The limited literature data that are available so far may be interpreted as indirect and suggestive evidence for diminished ruminal fermentation and bacterial synthesis after substitution of dried tomato pomace for soybean meal. Approach: Rumen-fistulated beef steers were used to address the questions whether the … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 8,867 accessesView PDFCite