Collaborative Study of Acid-Detergent Fiber and Lignin

Soest, van L.J.M.; Peter, Jakub

doi:10.1093/jaoac/56.4.781

Cited by 171 publications

(109 citation statements)

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“…Crude protein (6.25 · N) was determined using the Kjeldahl method (ISO, 2005), and crude fat was analysed according to the Berntrop method (ISO, 1999). Crude fibre, neutral detergent fibre (NDF), acid detergent fibre (ADF) and total dietary fibre (TDF) were determined using the Official Analytical Chemists methods (Van Soest, 1973;ISO, 1981;Prosky et al, 1985;Van Soest et al, 1991). Total collagen content was determined using the draft I.S.O.…”

Section: Diet Analysesmentioning

confidence: 99%

Animal fibre: The forgotten nutrient in strict carnivores? First insights in the cheetah

Depauw

Hesta

Whitehouse‐Tedd³

et al. 2011

Animal Physiology Nutrition

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As wild felids are obligate carnivores, it is likely that poorly enzymatically digestible animal tissues determine hindgut fermentation, instead of plant fibre. Therefore, faecal concentrations of short-chain fatty acids (SCFA, including branched-chain fatty acids, BCFA), indole and phenol were evaluated in 14 captive cheetahs, fed two different diets differing in proportion of poorly enzymatically digestible animal tissue. Using a cross-over design, the cheetahs were fed exclusively whole rabbit or supplemented beef for 1 month each. Feeding whole rabbit decreased faecal propionic (p < 0.001) and butyric (p = 0.013) acid concentrations, yet total SCFA was unaltered (p = 0.146). Also, a remarkably higher acetic acid to propionic acid ratio (p = 0.013) was present when fed whole rabbit. Total BCFA (p = 0.011) and putrefactive indole (p = 0.004) and phenol (p = 0.002) were lower when fed whole rabbit. Additionally, serum indoxyl sulphate, a toxic metabolite of indole, was analysed and showed a quadratic decrease (p = 0.050) when fed whole rabbit. The divergent SCFA ratios and the decrease in putrefaction when fed whole rabbit could be caused by the presence of undigested tissue, such as skin, bone and cartilage, that might have fibre-like functions. The concept of animal fibre is an unexplored area of interest relevant to gastrointestinal health of captive cheetahs and likely other felids.

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Section: Diet Analysesmentioning

confidence: 99%

Animal fibre: The forgotten nutrient in strict carnivores? First insights in the cheetah

Depauw

Hesta

Whitehouse‐Tedd³

et al. 2011

Animal Physiology Nutrition

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“…The second set of samples was freeze dried for fibre analysis. Acid detergent fibre (ADF) and neutral detergent fibre (NDF) contents were analysed using the methods described by Van Soest (1963) and Van Soest and Wine (1967), respectively, but modified in accordance with Van Soest (1973).…”

Section: Measurementsmentioning

confidence: 99%

Effect of sward surface height on intake and grazing behaviour by lactating Holstein Friesian cows

Gibb¹,

Huckle²,

Nuthall³

et al. 1997

Grass and Forage Sci

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“…Nitrogen (N) was measured by the Kjeldahl method (AOAC, 1990) and a factor of 6.25 was used to convert N into CP. Neutral detergent fibre (NDF) and acid detergent fibre (ADF) were analysed as per the standard methods, Van Soest, Robertson, and Lewis (1991) and Van Soest, (1973) respectively. Neutral detergent fibre was analysed after a pre-treatment with a heat-stable amylase.…”

Section: Chemical Analysismentioning

confidence: 99%

“…Acid detergent fibre (ADF) was analysed according to the method described by Van Soest et al (1973). Both NDF and ADF are expressed exclusive of residual ash.…”

Section: Chemical Analysismentioning

confidence: 99%

Isolipidic replacement of krabok oil by whole krabok seed reduces in vitro methanogenesis, but negatively affects fermentation

Panyakaew

Schonewille

Cone

et al. 2020

Animal Physiology Nutrition

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The background of the current in vitro study involves the issue of methane (CH4) production inherent to rumen fermentation. One of the dietary strategies to reduce enteric CH4 production by ruminants involves the supplementation of medium‐chain fatty acids in diets. As such, oils containing high amounts of MCFA, such as coconut, palm kernel and krabok oil, are of much interest to formulate energy efficient and environmentally friendly rations for ruminants. Krabok oil (KO) reduces methanogenesis, but the appropriate inclusion level of dietary KO is unclear. We therefore investigated the dose–response relationship between krabok oil and CH4 production. In practice, the use of whole krabok seed (WKS), instead of KO, is easier, but the efficacy of WKS to inhibit methanogenesis was hitherto unknown. Thus, we also investigated whether WKS provides an alternative tool to inhibit CH4 production. The experimental substrates contained either KO, WKS, the residue of WKS after fat extraction residue (FER) or FER + KO. Appropriate amounts of WKS or its derivatives were added to a basal substrate so as to attain either a low, medium or high content of KO, that is, 37–46, 90–94 and 146–153 g/kg dry matter respectively. The experimental substrates were formulated to keep the amounts of incubated fat‐free OM, crude protein, neutral detergent fibre and acid detergent fibre constant in order to avoid biased results through potential differences in fermentability between WKS and its derivatives, and the basal substrate. The latter resembled the ingredient composition of a total mixed ration commonly used in Thai dairy cows. Fully automated gas production (GP) equipment was used to measure gas‐ and CH4 production. Irrespective of the type of substrate (p ≥ .115), both the absolute (ml/g fat‐free OM) and relative (% of total GP) CH4 production was reduced at the highest inclusion level of WKS or its derivatives (p ≤ .019). Total GP (ml/g fat‐free OM), however, was reduced after incubation of FER, FER + KO, and WKS, but not KO, at the highest inclusion level of the respective substrates (p = .019). Volatile fatty acids were likewise affected (p ≤ .001). Krabok oil can inhibit CH4 production but only when the dietary KO content is at least 9.4% (DM). Supplementation of KO in the form of WKS, however, is considered not opportune because the fat extracted residue of WKS is poorly degraded during fermentation.

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Collaborative Study of Acid-Detergent Fiber and Lignin

Cited by 171 publications

References 0 publications

Animal fibre: The forgotten nutrient in strict carnivores? First insights in the cheetah

Animal fibre: The forgotten nutrient in strict carnivores? First insights in the cheetah

Effect of sward surface height on intake and grazing behaviour by lactating Holstein Friesian cows

Isolipidic replacement of krabok oil by whole krabok seed reduces in vitro methanogenesis, but negatively affects fermentation

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