Excretion of biliary fat and fatty acids in
growing pigs

Jørgensen, Henry; Jakobsen, K.; Eggum, B. O.

doi:10.22358/jafs/69904/1992

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…Although the influence of endogenous FA (Jørgensen et al, 1992a) cannot be discarded, our results fully agree with other studies where biohydrogenation of unsaturated FA was observed (Jørgensen et al, 1992b;Reis De Souza et al, 1995;. It can be hypothesised that oleic (C18:1), linoleic (C18:2) and linolenic (C18:3) acids reaching the hindgut are, at least in part, saturated by the microflora and converted into stearic acid (C18:0), which would explain the lower digestibility coefficients (in some cases negative) at the faecal than at the ileal level observed for this FA.…”

Section: Resultsmentioning

confidence: 99%

Fat and fatty acid digestibility of different fat sources in growing pigs

et al. 2007

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Section: Resultsmentioning

confidence: 99%

Fat and fatty acid digestibility of different fat sources in growing pigs

et al. 2007

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“…Digestion of fat in poultry is to a large extent depending on bile salt secretion (Kussaibati et al 1982;Krogdahl 1985;Knarreborg et al 2003), and is a limiting factor for the micelle formation especially in young birds fed unsaturated fatty acids (Wiseman and Lessire 1987). The curvilinear pattern of fat digestibility shown in Table 3 demonstrates that endogenous fat originating from bile (Jørgensen et al 1992a), desquamated cells or exudation from the mucosa had higher impact on the apparent fat digestibility at low dietary fat levels than at higher levels (Jørgensen et al 1993). Expressing the intake of dietary fat on digested amount of fat in absolute amounts a linear relationship is revealed and the partial digestibility of fat can be found by regression (Jørgensen and Ferna´ndez 2000).…”

Section: Discussionmentioning

confidence: 99%

Effect of graded levels of rapeseed oil in isonitrogenous diets on the development of the gastrointestinal tract, and utilisation of protein, fat and energy in broiler chickens

Jørgensen

Zhao

Theil

et al. 2008

Archives of Animal Nutrition

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The effect of feeding 0, 4, 8 and 16% rapeseed oil from 12-42 days of age was studied in broiler chickens on performance, digestibility of nutrients, and development of gastrointestinal tract, protein and energy metabolism. Thirty six female chickens (Ross 208) with initial body weight average 246 g were allocated to the four groups and kept pair-wise in metabolism cages. The chickens were fed similar amounts of metabolisable energy (ME) per day and similar amounts of essential amino acids relative to ME by adjusting with crystalline amino acids. The chickens were subjected to four balance periods each of five days with two 24 h measurements of gas exchange in two open-air-circuit respiration chambers inserted on the second and third day of each period. The addition of rapeseed oil increased the amount of gutfill indicating a reduced rate of passage and causing a hypertrophy of the gastrointestinal tract. There was a positive effect on feed utilisation as well as on digestibility especially of dietary fat together with higher utilisation of protein with addition of rapeseed oil. The partial fat digestibility of rapeseed oil estimated by regression was 91.1% and the partial metabolisability (ME/GE) of the rapeseed oil was estimated to 85% yielding an apparent metabolisable energy value of 34.30 MJ/kg.

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“…The diets were formulated to be isoenergetic, and so rapeseed oil was added to medium-and high-fibre diets. The higher the ether extract content, the higher is the ileal and faecal apparent digestibility of ether extract (Jørgensen et al, 1992). The dietary organic acid mixture improved the faecal digestibility of ether extract, whereas it produced only a tendency towards improvement in ileal apparent digestibility.…”

Section: Figurementioning

confidence: 93%

Effects of a dietary organic acid mixture and of dietary fibre levels on ileal and faecal nutrient apparent digestibility, bacterial nitrogen flow, microbial metabolite concentrations and rate of passage in the digestive tract of pigs

Partanen

Jalava

Valaja

2007

Animal

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Six 34-kg barrows were fitted with a post-valve T-caecum cannula and assigned to six dietary treatments according to a 6 £ 5 change-over design to study how a mixture of formic acid, sorbate, and benzoate (0 or 8.4 g/kg feed) influences apparent ileal and faecal digestibility coefficients, bacterial nitrogen (N) flow, microbial metabolite concentrations, and passage rate in pigs fed isoenergetic diets with medium, high, or very high fibre content (neutral-detergent fibre (NDF): 199, 224, and 248 g/kg dry matter, respectively). These barley and soya-bean meal based diets contained 0, 75, and 150 g/kg barley fibre (NDF: 577 g/kg) and 0, 8, and 16 g/kg rapeseed oil, respectively. The dietary organic acid mixture improved the apparent ileal digestibility of 14 of the 17 amino acids analysed (P , 0.05). Increasing levels of dietary fibre linearly decreased the apparent ileal digestibility of six of the 17 amino acids analysed (P , 0.05). Ileal flows of bacterial N and amino acids as assessed on the basis of purine flow were decreased by the dietary organic acid mixture (P , 0.05) but were not affected by dietary fibre level (P . 0.05). As assessed on the basis of diaminopimelic acid flow, bacterial N flow was increased by both the dietary organic acid mixture and increased dietary fibre levels (P , 0.05). The dietary organic acid mixture reduced the concentration of lactic acid and increased that of acetic acid in ileal digesta (P , 0.05), while dietary fibre levels had a quadratic effect on concentrations of acetic, propionic, and butyric acid (P , 0.05). The mean retention time of Co (solute marker) and Yb (particle marker) in the large intestine decreased in a linear manner by increasing dietary fibre levels (P , 0.05) but was not affected by the dietary organic acid mixture (P . 0.05). The results show that a dietary organic acid mixture has a positive effect on the apparent ileal digestibility of most amino acids irrespective of dietary fibre levels. This could be at least partly related to changes in bacterial N flow in the ileum. However, different bacterial markers showed opposite effects on bacterial N flow, which makes it questionable to use a constant bacterial marker / bacterial N ratio to estimate bacterial N flow. Increasing levels of dietary fibre had negative effects on the apparent ileal amino acid digestibilities and shortened the mean retention time of digesta in the large intestine.

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Excretion of biliary fat and fatty acids in growing pigs

Cited by 11 publications

References 24 publications

Fat and fatty acid digestibility of different fat sources in growing pigs

Fat and fatty acid digestibility of different fat sources in growing pigs

Effect of graded levels of rapeseed oil in isonitrogenous diets on the development of the gastrointestinal tract, and utilisation of protein, fat and energy in broiler chickens

Effects of a dietary organic acid mixture and of dietary fibre levels on ileal and faecal nutrient apparent digestibility, bacterial nitrogen flow, microbial metabolite concentrations and rate of passage in the digestive tract of pigs

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