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1

Antioxidant capacity of rapeseed and its products

100%
Szydlowska-Czerniak A.
Polish Journal of Food and Nutrition Sciences
|
2011
|
tom 61
|
nr Suppl.1
2
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Content available

Extreme price risk on the market of rapeseeds and processed rapeseed products in Poland

84%
Just M., Smiglak-Krajewska M.
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
|
2015
|
tom 17
|
nr 5
We can observe increasing volatility in rapeseed prices caused by the progressing process of globalisation in the turnover and processing of this raw material. It increases the exposure of rapeseed-producing entities and rapeseed-processing enterprises to price risk. The aim of this study is to assess the extreme price risk on the market of rapeseeds and processed rapeseed products in Poland. The study was based on average weekly rapeseed purchase prices and sales prices of refined rapeseed oil, rapeseed meal and rapeseed oilcake from 3 January 2005 and 19 April 2015. Extreme risk was measured with two measures: value at risk and expected shortfall. Extreme value theory was also applied. The research findings point to differences in the level of risk on the market of rapeseeds and processed rapeseed products.
3

Standardized ileal digestibility of amino acids in some cereals, rapeseed products and maize DDGS for broiler chickens at the age of 14 days

67%
Szczurek W.
Journal of Animal and Feed Sciences
|
2010
|
tom 19
|
nr 1
72-80
The experiment was conducted to assess the ileal digestibility values for the purpose of evaluating the ability of 14-day-old broilers to utilize the amino acids (AA) from different plant feeds. The feeds included two cereals: maize and wheat; full-fat seeds of rape (FRS); four local by-product: cold-pressed rapeseed cake (RC1), rapeseed cake from precooked (90°C) seeds (RC2), solvent-extracted rapeseed meal (RSM), maize distillers dried grains with solubles (DDGS), and soyabean meal (SBM), used as the model protein feed. The standardized ileal digestibilities of AA (SID) were measured using the assay diets containing Cr2O3 as an indigestible marker. A protein-free diet was formulated to estimate the basal ileal endogenous AA losses. Dietary protein in the assay diets was supplied solely by the test ingredients. Each diet was offered for 5 days to 4 replicate cages of 12 birds. For wheat the SID coefficients of most AA were significantly or numerically greater compared with maize. The numerical superiority of the SBM over all the other protein sources tested was found for SID of most AA, with statistically confirmed differences for threonine, tryptophan, serine and tyrosine. Among protein feeds examined DDGS had the lowest digestibility of lysine, methionine, threonine, tryptophan and cystine. Of the four rapeseed feeds, RSM had the lowest digestibility of lysine, histidine, alanine, glycine and serine. Considering the SID of the 18 amino acids, protein-rich feeds tested in this study were ranked as follows: SBM > RC1 > RC2 > FRS > RSM > DDGS. However, the SID values of lysine and methionine in both rapeseed cakes (RC1 and RC2) were comparable to those obtained for SBM.
4

Enhancing the nutritional value of poultry feedstuffs using the example of rapeseed products - a review

67%
Kozlowski K., Jeroch H.
Annals of Animal Science
|
2014
|
tom 14
|
nr 2
5

Practical validation of efficacy of the standardized ileal digestible amino acid values in diet formulation for broiler chickens

67%
Szczurek W.
Journal of Animal and Feed Sciences
|
2010
|
tom 19
|
nr 4
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