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Feeding. --- Food intake. --- Food. --- Noradrenaline. --- Pig. --- Pigs. --- Thyroid.

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Medicine --- Endocrinology --- food intake --- fish --- energy homeostasis --- invertebrates --- metabolism --- hormones

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

food intake --- fish --- energy homeostasis --- invertebrates --- metabolism --- hormones

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The aim of this work is to standardise a method for measuring the gas production of feedstuffs fermented in syringes. This technique could be used in tropical routine conditions to determine the fermentescibility of feedstuffs and to predict the intake, the digestibility and the energy value of forages. The results show that the gas production in syringues depends on the nature of the diet, the sampling time of the rumen fluid, the composition of the buffer and its proportion compared to the rumen fluid, as well as the amount of the incubated substrate. Gas production is optimised when 250 mg dry matter of substrate are incubated with rumen fluid from bovine or ovine sampled pre-feeding and the Menke buffer in the ratio of 10/20 in volume. Ovine faeces can serve as alternative to the rumen fluid when used for feeds with similar lignocellulosic contents. Gas production kinetics of feeds are different for glass or plastic syringes. The length of incubation and the measurement frequency of gas production also affect the estimation of the France model parameters and, consequently, the potentially degraded organic matter in the rumen. The ingestibility of Andropogon gayanus in sheep seems to be well predicted from its crude protein content and its fractional rate of gas production in syringes.

feeds --- feeds --- Fermentation --- Fermentation --- Measurement --- Measurement --- Rumen --- Rumen --- Sheep --- Sheep --- Digestibility --- Digestibility --- Food intake --- Food intake --- Andropogon gayanus --- Andropogon gayanus

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Swine --- Swine --- Dietary fibres --- Dietary fibres --- proteins --- proteins --- Food intake --- Food intake --- protein synthesis --- protein synthesis --- Digestive absorption --- Digestive absorption