This review is focused on the most studied and developed substances which are commonly knownas alternatives to dietary antibiotics, particularly as far rabbit feeds concerned. After a reminder of thereason be success antibiotic growth promoters, why they lately came banned in theEuropean Union, we successively deal with probiotics, prebiotics, enzymes organic acids. Data rabbitsare, expected, quite scarce when compared species such pigs poultry. Nevertheless, theavailable performance results...

The antimicrobial activity of fatty acids, monolaurin, citric, succinic, fumaric, malic and lactic acid was determined in cultures two strains Escherichia coli, three Salmonella sp. Clostridium perfringens. Antimicrobial expressed as minimum inhibitory concentration (MIC) that prevented growth glucose utilization treated cultures. Caprylic the only inhibiting all Its MIC varied from 1 to 3 mg/ml. Strains CCM 3954 4225 E. coli were inhibited also by capric at 5 4435T CNCTC 5459 Cl....

Megasphaera elsdenii belongs to the group comprising ruminal and intestinal lactate- sugar-fermenting species. In present study fermentation characteristics, metabolism of glucose lactate, susceptibility antimicrobial agents four strains were investigated. Particular attention was given mixed-substrate pattern resultant acid profile. Lactate utilized more rapidly than in media with both carbon sources. Interaction two substrates changed composition end products toward valerate less...

Journal Article Susceptibility of Clostridium perfringens to C2–C18 fatty acids Get access E. Skřivanová, Skřivanová Research Institute Animal Production, Laboratory Physiology Nutrition and Products Quality, Prague, Czech Republic Search for other works by this author on: Oxford Academic Google Scholar M. Marounek, Marounek RepublicInstitute Genetics, Laboratories Developmental Biology, Academy Sciences, Dr Prague 10 – Uhříněves, CZ 104 01, (e‐mail: marounek@iapg.cas.cz). G. Dlouhá, Dlouhá...

Activities of twelve hydrolytic enzymes in the digestive tract young rabbits before weaning (4 weeks old) and adult (3 months were measured. The principal both groups appeared to be amylase ( EC 3.2.1.1), maltase 3.2.1.20), pectinase 3.2.1.15) proteinases. stomach contained most lipolytic activity 45.7 % total proteolytic tract. highest specific activities (per g digesta) amylase, proteinase found small intestine. Total segment) intestine caecum similar. cellulase 3.2.1.4), inulinase...

1. Three hundred and twenty d-old chickens were fed on a wheat/maize-soyabean meal diet supplemented with (i) 50 g/kg lard, (ii) 25 lard rapeseed oil, (iii) (iv) oil 200 mg copper per kg as sulphate pentahydrate. 2. Final weights at 39 d of age in receiving lower by 9% than those the containing only (P<0.05). The fatty acids profiles lipids extracted from tissues 10 group reflected diets. 3. polyunsaturated acid (PUFA) content breast muscles abdominal fat (expressed percentage total acids)...

Two experiments were performed to compare the effect of pectin and its hydrophobic derivatives on homeostasis cholesterol cecal metabolism in male young rats. Control rats fed a diet supplemented with palm fat (50 10 g/kg, respectively). Rats other groups same containing citrus or octadecylpectinamide (60 g/kg). Diets for 4 weeks. In experiment I, pectinamide lower degree amidation (30 %) increased serum HDL from 1.20 1.43 micromol/ml (p>0.05) at expense fractions. II, higher (53...

Aims: Lachnospira multiparus belongs to the main rumen pectinolytic bacteria. Its carbohydrate metabolism was studied in growth experiments on laboratory fermenters, and using assays of activities enzymes involved pectin fermentation. Methods Results: The type strain this species two substrates were used. ATCC 19207 grew glucose at a similar rate had no preference for one or other substrate. Pectin‐grown cultures, however, produced significantly more acetate less formate, lactate, ethanol,...

An experiment was conducted to evaluate the effect of dietary content and combinations Zn, Fe, Cu on deposition these elements in egg components, liver, excreta. Excreta were applied as a manure lawn, 3 mo later soil herbage samples taken analyzed. The comprised 144 hens 8 groups. basal diet contained at 63.4, 92.8, 9.0 mg/kg, respectively. It supplemented with 1, 2, or trace (inorganic forms) 80 mg Zn/kg, 120 Fe/kg, 25 Cu/kg. Recovery eggs fed 10.7, 9.8, 4.4% alimentary intake, A Zn-Cu...

A group of 240-day-old Ross cockerels were used in a 4-week experiment to assess the effect fat type on intestinal digestibility fatty acids (FAs), FA profiles breast meat and abdominal fat, mRNA expression six hepatic lipid-related genes. Experimental diets supplemented with rapeseed oil, pork lard or palm oil at 60 g/kg. In control diet, wheat starch was substituted for source. The highest ileal all FAs (except stearic acid) observed chickens fed lard. content not significantly influenced...

Journal Article Metabolism of pectin in rumen bacteria Butyrivibrio fibrisolvens and Prevotella ruminicola Get access M. Marounek, Marounek Institute Animal Physiology Genetics, Czech Academy Sciences, Prague, Republic Dr Prague 10, Uhríneves, CZ – 104 00, Republic. Search for other works by this author on: Oxford Academic Google Scholar D. Dušková Letters Applied Microbiology, Volume 29, Issue 6, 1 December 1999, Pages 429–433, https://doi.org/10.1046/j.1472-765X.1999.00671.x Published: 01...

Zusammenfassung Die Bildung von flüchtigen Fettsäuren aus Hemicellulosen, Pektinen und Stärke in vitro Es wurde die Produktion (VFA) Hemicellulose, Pektin untersucht. Dabei Pansensaft Ziegen bei zwei unterschiedlichen Rationen (Heu bzw. Heu Kraftfutter) verschiedenen pH‐Werten benutzt. Außerdem wurden einerseits der gesamte andererseits filtrierter eingesetzt. konnten folgende Ergebnisse erzielt werden: 1. Bei beiden Futterrationen stieg VFA‐Produktion Hemicellulose Verwendung des gesamten...

Ten weaned rabbits were fed a basal (control) diet containing 0.12 mg Se/kg. In 10 the was supplemented with Se-enriched yeast to increase Se concentration 0.50 mg/kg. Rabbits slaughtered at age of 11 weeks. Samples meat, liver and hair 4 from each group taken analyzed. No effect on growth, feed conversion dressing out percentage observed. Loin hindleg control contained 93, 98, 521 267 μg Se/kg, respectively (average values). treated corresponding concentrations 400, 389, 1 414 914 μg/kg....

1. The influence of different forms dietary selenium (Se) on vitamin E (α-tocopherol) and Se contents egg yolk chicken meat was investigated.

The objective of this study was to investigate the effects 11 active compounds essential oils (ACEO) on rumen fermentation characteristics and methane production. Two trials were conducted. In trial 1, ACEO (eugenol, carvacrol, citral, limonene, 1,4-cineole, p-cymene, linalool, bornyl acetate, α-pinene, β-pinene) at a dose 1,000 μL/L incubated for 24 h in diluted fluid with 70:30 forage:concentrate substrate (16.2% crude protein; 36.6% neutral detergent fiber). Three fistulated Holstein cows...