High-protein fraction of 00 type rapeseed meal in broiler nutrition

Abstract

Two batches of a commercial double-low rapeseed meal (RSM) were separated into two fractions on sieves with a mesh diameter of 0.5 mm. In the higher-protein fractions (HP-RSM), which constituted about 35% of regular RSM (R-RSM), the crude protein level increased by 16% in the first batch and by 11% in the second, while crude fibre decreased by 19 and 14%, respectively. The glucosinolate (GLS) content rose from 15.5 to 16.7 uM/g defatted DM in the first batch and from 10 to 11.9 uM/g in the second. In both batches HP-fractions contained less methionine and cystine, while more histidine and phenylalanine than R-RSM.Two experiments were carried out, each on 1190 commercial broilers allocated to 14 pens on litter. In both experiments the birds were fed starter diets without RSM for the first three weeks. In the grower and finisher diets soyabean meal (SBM) was substituted, partially or totally, by R-RSM or HP-RSM.In Experiment 1 control broilers were significantly (P<0.01) heavier than those from the experimental groups, and birds receiving R-RSM were heavier (P<0.05) on day 48 of life than those given HP-RSM. In Experiment 2 there were no significant differences between the weight of birds receiving SBM or RSM in the diets, however, those given HP-RSM were slightly lighter. In Experiment 2 chickens fed RSM had larger livers (PO.05) and thyroids (PO.01) than the control birds.In both experiments feed conversion efficiency in RSM-fed groups was poorer than in control one, even when the available lysine level was not lower than in the control diet.

Substitution of soyabean meal with “00” rapeseed meal or its high-protein fraction in the nutrition of hens laying brown-shelled eggs

“…By sieving rapeseed meal through a 0.3 mm mesh sieve Korniewicz et al (1999) obtained a fraction that made up 30% of the material and contained 42% protein and 9% crude fibre in dry matter. Similarly as of experiment of Kamińska et al (2000), the protein in S-RSM contained less methionine and cystine than the R-RSM.…”

“…The use of rapeseed meal in the nutrition of broilers is more common (Smulikowska et al, 1991(Smulikowska et al, , 1998Chibowska et al, 2000;Kamińska et al, 2000), than in laying hens (Rutkowski et al, 1989;Gwara et al, 1993;Brettschneider et al, 1995;Niemiec et al, 2001). This may be caused by the occurrence of the unpleasant "fishy" odour of eggs from some hens fed rapeseed meal.…”

Rapeseed meal as a feed component in monogastric animal nutrition – a review

“…The obtained meal was used in a feeding experiment on broiler chickens. Reducing the content of soybean meal from 20 to 4%, with a fraction of 18% rapeseed protein meal, lowered the final body weight of the birds by 67 g/head but these differences were not significant (Kamińska et al, 2000). According to Brzóska et al (2010), a more effective method for the separation of rapeseed meal is pneumatic fractionation.…”

Worldwide Mycotoxins Exposure in Pig and Poultry Feed Formulations

“…Rapeseed meal has lower nutritive value than soybean meal because of its lower protein content, higher crude fiber content, and because it contains anti-nutrients such as glucosinolates and erucic acid. The use of rapeseed meal as a substitute for soybean meal is limited in pig and poultry to less than 10% of the diets [55,56,57,58]. Canola was created in the 1970s through plant cross-breeding to remove glucosinolates and erucic acid from rapeseed.…”