Effect of dietary carbadox or formic acid and fibre level on ileal and faecal nutrient digestibility and microbial metabolite concentrations in ileal digesta of the pig

Partanen, Kirsi; Jalava, Taina; Valaja, Jarmo; Perttilä, Sini; Siljander-Rasi, Hilkka; Lindeberg, Heli

doi:10.1016/s0377-8401(01)00288-7

Cited by 39 publications

(42 citation statements)

References 32 publications

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“…At 1200 h on day 7, ca 100-ml spot samples were taken from ileal digesta for the determination of pH, microbial metabolites, and microbial activity (ATP concentration). The chosen sampling time was based on the results of our previous study (Partanen et al, 2001). Samples for the determination of microbial metabolite concentrations were prepared as described by Partanen et al (2001) and stored at 218 8C until analysed.…”

Section: Methodsmentioning

confidence: 99%

“…The chosen sampling time was based on the results of our previous study (Partanen et al, 2001). Samples for the determination of microbial metabolite concentrations were prepared as described by Partanen et al (2001) and stored at 218 8C until analysed. For the determination of ATP concentration, 5 g of freshly collected digesta were mixed with 10 ml of cold PCA-EDTA solution (2 mol/l perchloric acid with 10 mmol/l EDTA) and frozen immediately at 2808C until analysed.…”

Section: Methodsmentioning

confidence: 99%

“…This should, in theory, improve both the ileal apparent and true digestibility of amino acids. However, dietary formic acid did not affect the true ileal digestibility of lysine in soya-bean meal as determined with the homoarginine technique, although the ileal apparent digestibility of dietary lysine was improved (Partanen et al, 2001). …”

Section: Introductionmentioning

confidence: 94%

“…Several studies have demonstrated that dietary organic acids improve the ileal apparent digestibility of protein and amino acids in growing-finishing pigs Kemme et al, 1999;Mroz et al, 2000;Partanen et al, 2001). A common hypothesis has been that dietary acidification improves protein digestibility by lowering gastric pH, which consequently increases pepsin activity.…”

Section: Introductionmentioning

confidence: 99%

“…Several authors have reported changes in bacterial counts and microbial metabolite concentrations in gastric and intestinal digesta of pigs fed diets supplemented with formic acid (Roth et al, 1992;Canibe et al, 2005). Reduced bacterial protein synthesis may contribute to the improved ileal apparent protein and amino acid digestibilities seen with the diets supplemented with organic acids (Partanen et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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Bioavailability of Amino Acids, Lipids, and Carbohydrates in Feedstuffs

Kil

Cervantes-Pahm

Stein

2012

Sustainable Swine Nutrition

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Colony composition and nutrient analysis of Polyrhachis dives ants, a natural prey of the Chinese pangolin (Manis pentadactyla)

Zhang

et al. 2021

Zoo Biology

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The Chinese pangolin (Manis pentadactyla) is a critically endangered mammal with a highly specialized diet. To enhance nutritional knowledge of its diet, we analyzed the colony composition of a nest of Polyrhachis dives ants, which is the key natural prey in the Chinese pangolin's diet. In addition, we determined the nutrient composition of the total colony compared with adult ants. Nutrients quantified in this study included: crude protein, crude fat, carbohydrate, and amino acids, minerals, and vitamins, as well as formic acid and chitin, which have not been reported in previous diet studies. Our results showed that the colony consisted of adults (82%), pupae (10%), larvae (7%), and eggs (1%) (fresh mass). Both the total colony and adult ants, respectively, contained high concentrations of crude protein (62.97% and 64.68%), chitin (49.25% and 60.40%), crude fat (10.12% and 9.91%) (dry matter basis), and formic acid (2.06% and 3.07%) (fresh mass). This implies that Chinese pangolin might prefer prey with high protein, high chitin, low fat, and low formic acid content. Colony and adult ants differed in chemical composition in many aspects, thus it might be unsuitable to feed Chinese pangolin with only adult ants. Chitin and formic acid may play important roles in the diet and selectivity of Chinese pangolin. This study provides reference information that may be useful for developing better artificial diets with more comprehensive nutrient compositional data to meet the nutritional requirements of the Chinese pangolin under managed feeding programs.

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Effect of dietary carbadox or formic acid and fibre level on ileal and faecal nutrient digestibility and microbial metabolite concentrations in ileal digesta of the pig

Cited by 39 publications

References 32 publications

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

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

Bioavailability of Amino Acids, Lipids, and Carbohydrates in Feedstuffs

Colony composition and nutrient analysis of Polyrhachis dives ants, a natural prey of the Chinese pangolin (Manis pentadactyla)

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