Variability in microbial population and fermentation traits at various sites within the forestomach and along the digestive tract as assessed in goats fed either grass or browse

Zeitz, Johanna O.; Ineichen, Simon; Soliva, Carla R.; Leiber, Florian; Tschuor, A; Braun, Ueli; Kreuzer, Michael; Clauss, Marcus

doi:10.1016/j.smallrumres.2015.12.029

Cited by 11 publications

(10 citation statements)

References 52 publications

(89 reference statements)

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“…A further effect, associated with decreased rumen retention time in the LD animals compared to the SD animals, is also speculated to occur. The lower concentrations of ciliated protozoa and anaerobic fungi in the large colon, compared to the rumen, are consistent with previous work (Zeitz et al 2016), although it is unclear how many, if any, of the protozoa were actually living. It is, however, worth noting that Buxtonella sulcata , a veterinary important ciliate has been regularly described in the hindgut (e.g.…”

Section: Discussionsupporting

confidence: 91%

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Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep

Thomas¹,

Olvera-Ramírez

Abecia

et al. 2019

Arch Microbiol

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Differences in the rumen bacterial community have been previously reported for Soay sheep housed under different day length conditions. This study extends this previous investigation to other organs of the digestive tract, as well as the analysis of ciliated protozoa and anaerobic fungi. The detectable concentrations of ciliated protozoa and anaerobic fungi decreased with increased day length in both the rumen and large colon, unlike those of bacteria where no effect was observed. Conversely, bacterial community composition was affected by day length in both the rumen and large colon, but the community composition of the detectable ciliated protozoa and anaerobic fungi was not affected. Day length-associated differences in the bacterial community composition extended to all of the organs examined, with the exception of the duodenum and the jejunum. It is proposed that differences in rumen fill and ruminal ‘by-pass’ nutrients together with endocrinological changes cause the observed effects of day length on the different gut microbial communities.

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Section: Discussionsupporting

confidence: 91%

“…This suggests that the ruminal bacteria are more metabolically active in the LD animals, relative to the SD animals. Furthermore, although a lot of the SCFAs are absorbed across the rumino-reticulum wall, it is already known that the SCFAs in the organs lying distal to the rumen may vary depending on dietary factors (Zeitz et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep

Thomas¹,

Olvera-Ramírez

Abecia

et al. 2019

Arch Microbiol

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“…Detailed studies about differences in the microbiome at different forestomach locations, as available in ruminants [e.g. 45 ], do not exist for colobines so far. In contrast to the detailed knowledge about the differential function of individual forestomach sections in ruminants and camelids [e.g.…”

Section: Discussionmentioning

confidence: 99%

Apparent diet digestibility of captive colobines in relation to stomach types with special reference to fibre digestion

Hoshino

Seino²,

Funahashi

et al. 2021

PLoS ONE

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Colobine monkeys are known for the anatomical complexity of their stomachs, making them distinct within the primate order. Amongst foregut fermenters, they appear peculiar because of the occurrence of two different stomach types, having either three (‘tripartite’) or four (‘quadripartite’, adding the praesaccus) chambers. The functional differences between tri and quadripartite stomachs largely remain to be explained. In this study, we aim to compare the apparent digestibility (aD) in tripartite and quadripartite colobines. Hence, we measured the aD in two colobine species, Nasalis larvatus (quadripartite) and Trachypithecus cristatus (tripartite), in two zoos. We also included existing colobine literature data on the aD and analysed whether the aD of fibre components is different between the stomach types to test the hypothesis of whether quadripartite colobines show higher aD of fibre components than tripartite colobines did. Our captive N. larvatus specimen had a more distinctively varying nutrient intake across seasons with a larger seasonal variation in aD than that of a pair of T. cristatus, which mostly consumed commercial foods with a lower proportion of browse and less seasonal variation. We observed higher aD of dry matter (DM), neutral detergent fibre (NDF) and acid detergent fibre (ADF) in the N. larvatus specimen, suggesting a higher gut capacity of N. larvatus provided by the additional praesaccus forestomach chamber. Based on the analysis of literature data for aD, we also found that quadripartite species achieved higher fibre digestibility at similar dietary fibre levels compared with tripartite species, supporting the hypothesis that the additional gut capacity offered by the praesaccus facilitates a longer retention and hence more thorough microbial fermentation of plant fibre.

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“…This experiment was part of a study on the abdominal anatomy (Braun et al., ,b,c) and digestive physiology of goats (Codron et al., ; Zeitz et al., ) and performed under licence Zurich 69/2008 of the cantonal veterinary office. Ten female adult non‐lactating Saanen goats were kept in groups in indoor enclosures (app.…”

Section: Methodsmentioning

confidence: 99%

Dry matter and digesta particle size gradients along the goat digestive tract on grass and browse diets

Clauss

Fritz

Tschuor

et al. 2016

Animal Physiology Nutrition

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Physical properties of the digesta vary along the ruminant digestive tract. They also vary within the forestomach, leading to varying degrees of rumen contents stratification in 'moose-type' (browsing) and 'cattle-type' (intermediate and grazing) ruminants. We investigated the dry matter concentration (DM) and the mean digesta particle size (MPS) within the forestomach and along the digestive tract in 10 goats fed grass hay or dried browse after a standardized 12-h fast, euthanasia and freezing in the natural position. In all animals, irrespective of diet, DM showed a peak in the omasum and an increase from caecum via colon towards the faeces and a decrease in MPS between the reticulum and the omasum. Both patterns are typical for ruminants in general. In the forestomach, there was little systematic difference between more cranial and more caudal locations ('horizontal stratification'), with the possible exception of large particle segregation in the dorsal rumen blindsac on the grass diet. In contrast, the typical (vertical) contents stratification was evident for DM (with drier contents dorsally) and, to a lower degree, for MPS (with larger particles dorsally). Although evident in both groups, this stratification was more pronounced on the grass diet. The results support the interpretation that differences in rumen contents stratification between ruminants are mainly an effect of species-specific physiology, but can be enhanced due to the diet consumed.

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Variability in microbial population and fermentation traits at various sites within the forestomach and along the digestive tract as assessed in goats fed either grass or browse

Cited by 11 publications

References 52 publications

Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep

Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep

Apparent diet digestibility of captive colobines in relation to stomach types with special reference to fibre digestion

Dry matter and digesta particle size gradients along the goat digestive tract on grass and browse diets

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