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... Hydroxy lipids (L-OH) and 4-hydroxy-2-hexenal (HHE) levels as well as other parameters such as lipid level, lipid class, fatty acid composition, and other aldehydes levels in the liver of diseased fish were investigated. Although significant differences in lipid level, lipid class, fatty acid composition, and other aldehyde levels were not always observed between normal and diseased fish, L-OH and ...
adverse effects; animal feeding; biofuels; blood serum; correlation; cortisol; dietary supplements; energy intake; energy metabolism; feed intake; feeds; fuel production; gestation period; glycerol; insulin; lactation; leptin; nutritive value; pregnancy; sows; value added; weight loss
Abstract:
... The continued growth in biofuel production has led to a search for alternative value-added applications of its main by-product, crude glycerin. The surplus glycerin production and a higher cost of feedstuffs have increased the emphasis on evaluating its nutritive value for animal feeding. The aim of this research was to evaluate the effect of the dietary addition of crude glycerin on sow and litte ...
... Pig houses are important sources of ammonia (NH₃) emissions. For decades, investigations were carried out in determine the influencing factors and to point out opportunities of mitigation. In Europe, current NH₃ emissions associated to pig production are about 24% lower than in 1990. However, further reduction seems necessary to avoid noxious effects on ecosystems. The main factors influencing NH₃ ...
... Nine agro-industrial and forestry by-products were subjected to solid-state fermentation by Agrocybe cylindracea and Pleurotus ostreatus, and the process and end-products were comparatively evaluated. Grape marc waste plus cotton gin trash was the best performing medium for both fungi, while substrate composition had a marked effect on most cultivation parameters. Biological efficiency was positiv ...
... The 360 feed and manure samples were collected from 150 animal farms in Jiangsu Province, China and analyzed for heavy metals. Concentrations of Zn and Cu in animal feeds were 15.9–2041.8 and undetected–392.1 mg/kg respectively, while Hg, As, Pb, Cd, and Cr in all feeds were below 10 mg/kg. Concentrations of Cu, Zn, and Cr in animal manures were 8.4–1726, 39.5–11379, and 1.0–1602 mg/kg respectivel ...
... The preferences for six Graminaeae forages, differing in chemical composition, by adult castrated male Scottish Blackface sheep and fibre-producing castrated male goats were assessed in paired choice trials. Using barley straw, low and high digestibility grass hay (Lolium perenne) and the use of ammonia treatment of the low quality forages, created the range in chemical composition of the forages. ...
... Thailand is predominantly an agriculture-based country. Organic farming is enlisted as an important national agenda to promote food safety and international export. The present study aimed to determine the concentrations of trace elements in commercial organic fertilizers (fermented and nonfermented) composed of pig and cattle manures available in Thailand. Pig and cattle manures as well as animal ...
carbohydrates; correlation; cows; data collection; diet; digestion; energy; equations; farms; feeds; fractionation; lactation; metabolizable energy; milk; milk protein yield; model validation; models; prediction; protein content; proteins; rumen
Abstract:
... New laboratory and animal sampling methods and data have been generated over the last 10 yr that had the potential to improve the predictions for energy, protein, and AA supply and requirements in the Cornell Net Carbohydrate and Protein System (CNCPS). The objectives of this study were to describe updates to the CNCPS and evaluate model performance against both literature and on-farm data. The ch ...
... Factors influencing dairy technology adoption and impact on milk yield were studied in 240 smallholder farms in Dejen district, Ethiopia. The majority of the smallholders had more than 20 years of farming experience and were living at more than 10 km distance from market or trading centers (67% and 54% in that order). The dairy technologies studied included the use of crossbred animals, improved f ...
alkaloids; correlation; feeds; monitoring; solid phase extraction; sorbents; tandem mass spectrometry; ultra-performance liquid chromatography
Abstract:
... To detect and quantify synephrine in feed, an effective analytical method based on quick, easy, cheap, effective, rugged, and safe solid‐phase extraction coupled to ultra high performance liquid chromatography with tandem mass spectrometry was developed with isotopic internal standards. Pretreatment was performed using quick, easy, cheap, effective, rugged, and safe solid‐phase extraction with pri ...
... A rapid liquid chromatography tandem mass spectrometry method was developed and validated to detect and confirm five thyreostatic drugs: tapazole, thiouracil, methylthiouracil, propylthiouracil, and phenylthiouracil in animal feeding stuff samples. Thyreostats were extracted from feed with methanol, and then degreasing of the extract with petroleum ether was performed, followed by the derivatisati ...
... In this study, the contents of total mercury (Hg) present in poultry feed, tissues of broiler chicken and manure were assessed. For this purpose, chicken feeds (five brands), different tissues of broiler chicken of two age groups (1-3 and 4-6 week) and manure samples were collected from five commercial poultry farms of Hyderabad, Pakistan. The Hg concentrations in feeds, chicken tissues (leg, musc ...
... A chromatographic procedure for the determination of oxytetracycline (OTC), tetracycline (TC), chlorotetracycline (CTC), and doxycycline (DC) in medicated feedingstuffs was developed. Samples were extracted with 0.01 M citric buffer/acetonitrile (pH 3.0) and further purified with 0.45 μm syringe filters. The purified extract was separated on Thermo column C₁₈, 150 × 4 mm, 5 μm and detection was ca ...
... In this study, an enzyme-linked immunosorbent assay (ELISA) was developed for the simultaneous quantitative determination of five quinoxaline-1,4-dioxides (olaquindox, carbadox, mequindox, quinocetone and cyadox) in porcine and chicken feeds. Polyclonal antibodies (PAbs) with group-specificity to quinoxaline-1,4-dioxides were raised in rabbits after immunization with quinoaxline-2-carboxylic acid- ...
European Union; T-2 toxin; aflatoxin B1; aflatoxin B2; aflatoxin G1; aflatoxin G2; correlation; detection limit; feeds; homogenization; liquid chromatography; monoclonal antibodies; ochratoxin A; sterigmatocystin; tandem mass spectrometry; zearalenone
Abstract:
... A sensitive and specific immunoaffinity column to clean up and isolate multiple mycotoxins was developed along with a rapid one-step sample preparation procedure for ultra-performance liquid chromatography–tandem mass spectrometry analysis. Monoclonal antibodies against aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, zearalenone, ochratoxin A, sterigmatocystin, and T-2 toxin were coupled t ...
chickens; chloramphenicol; correlation; detection limit; enzyme-linked immunosorbent assay; feeds; fluorescence; human health; immunoaffinity chromatography; muscles; sampling; serum albumin
Abstract:
... BACKGROUND: Chloramphenicol (CAP), an antimicrobial drug that is widely used in animal feed, would have a negative effect on human health due to its low elimination rate and relatively high residue in animal food. It is important to develop a rapid and economic method to determine CAP in animal food to ensure that human health is not affected. RESULTS: A new fluorescence immunochromatography strip ...
... An efficient HPTLC method was developed, which required minimal sample preparation for quantitation of the main anthocyanes in pomace, animal feed as well as various foods. The best separation of 11 anthocyanes was achieved on HPTLC plates silica gel 60 F₂₅₄ with a mixture of ethyl acetate–2-butanone–formic acid–water for anthocyanins and ethyl acetate–toluene–formic acid–water for anthocyanidins. ...
Escherichia coli; absorbance; bioavailability; biosensors; casein; correlation; essential amino acids; feeds; fluorescence; foods; genes; green fluorescent protein; humans; hydrolysates; lysine; microbial growth; protein sources; protein synthesis; transposons
Abstract:
... As an essential amino acid, lysine is an important component of animal and human diets and its bioavailability can depend on a variety of factors. Therefore, an accurate pre-determination of bioavailable lysine in foods and feeds is important. In this study a whole cell fluorescent biosensor for the quantification of lysine in protein sources was constructed. A gene encoding for green fluorescent ...
... The objective of this study was to determine the effects of mixing time (mixer efficiency) of diets containing several low-inclusion ingredients (crystalline AA, ZnO, a medication, and vitamin and trace mineral premixes) on growth performance of nursery pigs. In a pilot study, mixing efficiency of a 1,360-kg capacity, horizontal ribbon mixer was evaluated with salt of different particle sizes (440 ...
blood; body size; correlation; ectoparasites; feeds; host specificity; hosts; niches; parasitic mites; small mammals
Abstract:
... We studied ecological correlates of body size (abundance and niche breadth) in gamasid mites parasitic on small mammals in 28 regions of the Palearctic. We predicted that smaller species would be characterized by higher abundance than larger species, all else (e.g. host species) being equal. We also predicted that host specificity of mites would decrease (that is, number of host species they use w ...