The objective of this thesis was to investigate digestibility and metabolism in Icelandic horses fed forage differing in stage of maturity/harvesting date and at two feeding levels. Additional aims were to compare digestibility and metabolic plasma profile in Icelandic and Standardbred horses. Finally, one aim was to estimate the digestible energy (DE) and digestible crude protein (DCP) require...

The dietary replacement of available carbohydrates (mainly starch) by digestible fibre was assessed on rabbit growth and digestion. Two diets supplying hemicellulose (diet HC) or a mix of hemicellulose and pectins (HC 1 P) were compared to a control diet having a higher starch content, but a similar content in low digested fibre (lignocellulose ADF 5 155 g/kg). Three groups of 17 rabbits were a...

The study assessed the effect of dietary supplementation of leaf meal mixture (LMM) containing condensed tannins (CT) on feed intake, nutrient utilization and performance of sheep infected with Haemonchus contortus. Eighteen adult sheep of similar age and body weight (25.03±1.52) were included in this study and out of these, 12 sheep were infected with single dose of infective third stage larva...

Feeding fibre and branched-chain amino acids (BCAA) to sows during late gestation lactation, respectively, have been shown improve litter weights at weaning. Therefore, supplementing primiparous sow diets with lucerne chaff, a feedstuff high in fibre, BCAA tryptophan, may the performance of their progeny. Experiment 1 investigated effects feeding (n = 118) either (i) control diet (CON); (ii) CO...

The objectives of this experiment were to evaluate the effects of dietary protein supplementation in lactating dairy ewe’s diets on milk coagulation properties. Milk samples (n=126) were analyzed to assess the source of variation for rennet coagulation ability at the 6th (RCA6) and 12th hour (RCA12), milk clotting time (MCT, s) and an index of milk clotting time (IMCT, %). In addition, data wer...

In this study, common weed species (Anthemis sp., Anthemis tinctoria L., Pilosella hoppeana Schultes, Doranicum orientale Hoffm, Muscari neglectum Guss. ex Ten., Ornithogalum armeniacum Baker, narbonense wiedemannii Boiss., Anchusa azurea Miller, Echium plantagineum vulgare Ajuga orientalis Stachys germenica Juncus Anacamptis pyramidalis Ophrys apifera Huds., Carex panicea Ranunculus Hypericum ...

CPT-11 is a drug used as chemotherapy for colorectal cancer. CPT-11 causes toxic side-effects in patients. CPT-11 toxicity has been attributed to the activity of intestinal microbiota, however, intestinal microbiota may also have protective effects in CP!-11 chemotherapy. This study aimed to elucidate mechanisms through which microbiota and dietary fibres could modify host health. Rats bearing ...

As a result of the cost of grains, the replacement of grains by co-products (i.e. DDGS) in feedlot diets is a common practice. This change produces diets that contain a lower amount of starch and greater amount of fibre. Hypothetically, combining feed grade urea (U) with slow release urea (Optigen) in this type of diet should elicit a better synchrony between starch (high-rate of digestion) and...

Since 1953, the definition of 'dietary fibre' (DF) has evolved significantly following an international debate based on analytical progress, new nutritional and physiological knowledge and also private interests of the food industry. The overall tendency is towards an extension of the definition by including resistant starches as well as non-digestible oligosaccharides. This broadened definitio...

A meta-analysis was conducted to evaluate the extent to which dietary tannin level is related to methane emissions from ruminants. Data from a total of 30 experiments comprising 171 treatments were entered in a database. In vitro batch culture and in vivo measurements were distinguished as experimental approaches. With any approach, methane declined when dietary tannins increased. The in vitro ...