Hepatic metabolism of anaesthetized growing pigs during acute portal infusion of volatile fatty acids and hydroxy-methyl butyrate

2016 ◽  
Vol 94 (suppl_3) ◽  
pp. 324-327 ◽  
Author(s):  
P. K. Theil ◽  
U. Krogh ◽  
V. Bjerre-Harpøth ◽  
A. C. Storm
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Hepatic Metabolism ◽  
Growing Pigs ◽  
Methyl Butyrate ◽  
Portal Infusion

Effect of resistant starch on net portal-drained viscera flux of glucose, volatile fatty acids, urea, and ammonia in growing pigs.

1997 ◽  
Vol 75 (10) ◽  
pp. 2697 ◽  
Author(s):  
J van der Meulen ◽  
G C Bakker ◽  
J G Bakker ◽  
H de Visser ◽  
A W Jongbloed ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Resistant Starch ◽  
Volatile Fatty Acids ◽  
Growing Pigs

INFLUENCE OF DIETARY VOLATILE FATTY ACID MIXTURES ON PERFORMANCE AND ON FAT COMPOSITION OF GROWING PIGS

1971 ◽  
Vol 51 (1) ◽  
pp. 89-94 ◽  
Author(s):  
J. P. BOWLAND ◽  
B. A. YOUNG ◽  
L. P. MILLIGAN
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Feed Intake ◽  
Volatile Fatty Acids ◽  
Control Diet ◽  
Weight Percent ◽  
Growing Pigs ◽  
Bomb Calorimetry ◽  
Digestible Energy ◽  
Gross Energy

Two experiments were conducted to evaluate the acceptability, calculated digestible energy, influence on performance, and effect on fatty acid composition of backfat when a mixture of volatile fatty acids (VFA) or of a sodium salt of these fatty acids (Na VFA) was fed to pigs. The weight percent of the VFA mixture was 40 acetic, 40 propionic and 20 butyric acid. Adding 2 to 8% VFA or Na VFA to the diet, without adjustment for digestible energy or total protein, did not influence feed intake or rate of gain. Dietary levels of 10 or 12% VFA or Na VFA depressed daily gain. When 4% VFA or Na VFA was fed from an initial weight of 12 kg, feed intake was not altered in comparison with that of pigs fed a control diet. Rate of gain averaged 0.64 kg per day for pigs fed either VFA or Na VFA, compared with 0.60 kg for control pigs. The digestible energy values of the VFA and Na VFA, based on calculated energy conversion from 38 to 75 kg liveweight, were higher than the gross energy values of the compounds determined by oxygen bomb calorimetry, presumably because of a synergistic action of VFA with other energy sources in the diet. Carcass backfat thickness, area of loin and lean in the ham face were not significantly altered by feeding VFA or Na VFA. When pigs received up to 12% VFA or Na VFA, weight percent oleic acid in the outer backfat was increased (P < 0.05) from 49.9% in the control pigs to between 52.7 and 53.3 percent. There was no influence on backfat composition when 4% VFA or Na VFA was fed continuously.

scholarly journals Effect of ileo-rectal anastomosis and post-valve T-caecum cannulation on growing pigs

1992 ◽  
Vol 68 (1) ◽  
pp. 293-303 ◽  
Author(s):  
T. KÖhler ◽  
R. Mosenthin ◽  
M. W. A. Verstegen ◽  
J. Huisman ◽  
L. A. Den Hartog ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Growth Performance ◽  
Volatile Fatty Acids ◽  
Nitrogen Retention ◽  
Growing Pigs ◽  
Diaminopimelic Acid ◽  
Control Group ◽  
Feed Conversion ◽  
Rectal Anastomosis ◽  
N Retention

The effects of post-valve T-caecum (PVTC) cannulation and end-to-side ileo-rectal anastomosis (IRA) on growth performance, nitrogen retention and intestinal fermentation were measured in growing pigs by comparison with a control group of intact animals. There were no differences between PVTC-pigs and intact pigs in growth performance and N balance. In IRA-animals reduced growth (P < 0.01), less efficient feed conversion (P < 0.01) and decreased N retention (P < 0.001) were found. Indices of fermentation measured in deal digesta of PVTC- and IRA-pigs were considerably different. In IRA-animals the concentration of volatile fatty acids (VFA) was about 112–162 mmol/l, higher (P < 0.001) than in digesta of PVTC-pigs (20–31 mmol/l). The molar proportions of acetate and propionate depended (P < 0.01 and P < 0.001 respectively) on the digesta-collection technique. Concentrations and ratios of VFA measured in PVTC-pigs were similar to reported values. Diaminopimelic acid (DAPA) concentration and N:DAPA ratios measured in digesta were significantly (P < 0.05 and P < 0.001 respectively) different between treatments. All digesta variables measured showed increased microbial activity in digesta of IRA-pigs; thus, an influence on digestibility measurement can be assumed.

scholarly journals Relationship between Dietary Fiber Fermentation and Volatile Fatty Acids’ Concentration in Growing Pigs

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 263 ◽  
Author(s):  
Jinbiao Zhao ◽  
Yu Bai ◽  
Gang Zhang ◽  
Ling Liu ◽  
Changhua Lai
Keyword(s):  
Fatty Acids ◽  
Dietary Fiber ◽  
Volatile Fatty Acids ◽  
Growing Pigs ◽  
Total Dietary Fiber ◽  
Insoluble Dietary Fiber ◽  
Ileal Digestibility ◽  
Beet Pulp ◽  
Fiber Components ◽  
Fiber Fermentation

This study was conducted to determine whether differences in fiber fermentation in fiber-rich feed ingredients exist and to assess relationship between fiber fermentation and concentration of volatile fatty acids (VFA) in pig. Castrated males (barrows) were allotted randomly to six diets formulated with different amounts of wheat bran (WB), corn bran (CB), sugar beet pulp (SBP), oat bran (OB), soybean hulls (SH) or rice bran (RB). The apparent ileal digestibility (AID) of soluble dietary fiber (SDF) for OB and SH diets was greater (P < 0.05) than for the other diets. The fermentation of total dietary fiber (TDF) and insoluble dietary fiber (IDF) in the hindgut were greater (P < 0.05) for SBP and SH diets than for WB, CB, OB and RB diets. The apparent total tract digestibility (ATTD) values of all fiber components in SBP, SH and OB diets were greater (P < 0.05) than for WB, CB and RB diets. The concentration of VFA in feces was positively correlated with the ATTD of IDF and cellulose, and ATTD of IDF is the best factor for predicting fecal VFA concentration. Overall, dietary fiber source affected fermentable characteristics of fiber components in the different digestive segments of pig intestine.

Splanchnic metabolism of volatile fatty acids in the dairy cow

2005 ◽  
Vol 80 (1) ◽  
pp. 3-10 ◽  
Author(s):  
N. B. Kristensen
Keyword(s):  
Fatty Acids ◽  
Dairy Cow ◽  
Volatile Fatty Acids ◽  
Large Fraction ◽  
Hepatic Metabolism ◽  
Future Research ◽  
Peripheral Tissues ◽  
Nutritional Physiology ◽  
Ruminal Epithelium ◽  
Gastro Intestinal Tract

AbstractVolatile fatty acids (VFA) are quantitatively important substrates for dairy cows and other ruminants. It has been a central dogma in the nutritional physiology of ruminants that the ruminal epithelium metabolizes a large fraction of VFA during theirabsorption and consequently a relatively small fraction of VFA is available for peripheral tissues including the mammary gland. New data on splanchnic metabolism of VFA indicate that the ruminal epithelium metabolizes none or small amounts of acetate and propionate absorbed from the rumen. However, the ruminal epithelium has a large fractional uptake of butyrate and valerate during their absorption from the rumen. The liver takes up proportionately 0·9 or more of the absorbed propionate, however multiple factors are involved in regulation of hepatic metabolism and propionate does not determine glucose availability to the cowper se. In light of the quantitative importance of VFA to the dairy cow it is important that future research attempts to bridge the gap between the biology of food degradation/digestion in the gastro-intestinal tract and availability of specific nutrients to the cow which impact intermediary metabolism and nutrient utilizationin productive tissues.

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