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Systematics, Distribution, Diversity, and Abundance of Herbivorous Fishes
Published in Karol Opuszynski, Jerome V. Shireman, HERBIVOROUS FISHES: Culture and Use for Weed Management, 2019
Karol Opuszynski, Jerome V. Shireman
To date, the hindgut fermentation chamber has been found only in two herbivores, Kyphosus cornelii and K. sydneyanus, of the family Kyphosidae. These fishes, which are abundant in the temperate and subtropical coastal reef waters of Australia, possess unique digestive tracts and digestive capabilities.61 Both species have a relatively long and coiled intestine, being 3.3 to 5.8 times the body length in K. cornelii and 3.4 to 5.3 times the body length in K. sydneyanus. The digestive tract consists of the esophagus, stomach, pyloric ceca (located at the junction of the stomach and intestine), and a thin-walled cecum-like chamber located at the hindgut and rectum. The hindgut cecum is separated by valves from the intestine and the rectum. No structure comparable to the hindgut cecal chamber has been described for any other fishes. This chamber, when distended, could contain approximately 1.5 to 2 times the stomach volume.
Use of biochar as feed supplements for animal farming
Published in Critical Reviews in Environmental Science and Technology, 2021
Ka Yan Man, Ka Lai Chow, Yu Bon Man, Wing Yin Mo, Ming Hung Wong
Methane from the rumen is mainly disposed of by eructation via the gut, and a small proportion is absorbed into the blood and expired through the lungs (Danielsson et al., 2017; Deusch et al., 2017). Most enteric methane is absorbed or excreted via the lungs, but some is emitted through the anus (Hook, Wright, & McBride, 2010). Enteric methane originating in the rumen and hindgut fermentation can account for 6–14% of daily methane production (Moss, Jouany, & Newbold, 2000; Martin, Morgavi, & Doreau, 2010).