Growth Depressing Factors in Rapeseed Meal. VI. Feeding Value for Growing-Finishing Swine of Myrosinase-Free, Solvent-Extracted Meal1

1965 ◽  
Vol 24 (4) ◽  
pp. 1147-1151 ◽  
Author(s):  
J. M. Bell
Keyword(s):  
1980 ◽  
Vol 60 (4) ◽  
pp. 953-960 ◽  
Author(s):  
J. M. BELL ◽  
A. SHIRES

Five lots of fine rapeseed screenings were obtained from crushing plants, extracted in a pilot crushing plant, subjected to botanical analysis, and assayed for mycotoxins, protein, ether extract, ash, crude fibre, sand, amino acids, combustible energy and glucosinolates. Each screenings meal was substituted for 4, 8 and 12% of clean Tower rapeseed meal, incorporated into diets, pelleted and fed to swine over a weight range of 23–88 kg. The main finding in the feeding trial was a decline in efficiency of feed utilization as the level of screenings increased. Digestibility trials were conducted on the 12% screenings diets. Two of the screenings lots depressed protein digestibility from 78 to 73% and four of the screenings samples depressed energy digestibility. The lysine content of screenings tended to be lower than for Tower rapeseed meal and this, together with the lower protein digestibility, suggests that available lysine might be adversely affected by the inclusion of screenings in rapeseed meal. It therefore is nutritionally advantageous to ensure that rapeseed is relatively free of foreign matter prior to crushing.


1999 ◽  
Vol 68 (1) ◽  
pp. 183-194 ◽  
Author(s):  
T. A. McAllister ◽  
K. Stanford ◽  
G. L. Wallins ◽  
M. J. T. Reaney ◽  
K.-J. Cheng

AbstractMeals prepared from low glucosinolate rapeseed screenings (SCREEN) and from seed which had heated during storage (HEAT) were compared against commercial rapeseed meal (COM) for feeding value. Oil, crude protein (CP) and acid-detergent insoluble nitrogen contents in SCREEN, HEAT and COM, respectively, were (g/kg): 118, 246 and 13; 227, 315 and 436; and 17, 64 and 21.in situdry matter (DM) and protein disappearance rates, soluble protein fraction and effective rumen degradability of protein (EDCP) were lower (P< 0·05) in HEAT than in SCREEN or COM. Comparing oil-extracted meals in situ, EDCP of HEAT was lower (P< 0·05) than EDCP of SCREEN or COM but protein and DM disappearance rates of HEAT were only lower (P< 0·05) than those of SCREEN. Four isonitrogenous barley-based diets (150 g/kg CP, DM basis), containing SCREEN, HEAT, COM or COM supplemented with rapeseed oil (OIL), were given to lambs. For DM, organic matter and neutral-detergent fibre apparent digestibilities, the diets ranked SCREEN > HEAT = OIL > COM (P< 0·05). Digestion and retention of nitrogen were lower (P< 0·05) in lambs given HEAT than in lambs given other diets. Food efficiency of lambs given HEAT was improved (P< 0·05) as compared with lambs given SCREEN or COM. Dressing proportions were higher (P< 0·05) with HEAT, SCREEN and OIL diets than with COM. Other than minor changes in fatty acid composition of subcutaneous fat with HEAT and OIL, carcass traits were not altered by treatment. Feeding SCREEN or HEAT did not adversely affect animal performance or food utilization.


1982 ◽  
Vol 62 (3) ◽  
pp. 915-918
Author(s):  
Y. K. GOH ◽  
A. SHIRES ◽  
A. R. ROBBLEE ◽  
D. R. CLANDININ

The effects of sparging low glucosinolate-type rapeseed meal (Canola meal) with ammonia, in the absence or presence of steam, on its amino acid composition and feeding value for chicks were studied. Sparging treatments had no effects on the amino acid contents of the meals nor were thyroid size or the growth of chicks affected adversely when the variously treated meals were included in diets for chicks at the 20% level. Sparging with steam appeared to increase the available lysine content of the meal and improve its feeding value for chicks. Key words: Canola meal, ammoniation, sinapine, nutritive value, chicks


1980 ◽  
Vol 60 (2) ◽  
pp. 423-432 ◽  
Author(s):  
S. OCHETIM ◽  
J. M. BELL ◽  
C. E. DOIGE

Ninety-nine pigs, fed ad libitum from 6.8 to 14.0 kg liveweight, were used to examine the effects of including iodinated casein (44 mg/kg diet) in an early weaning diet containing 20% of a low glucosinolate, low erucic acid rapeseed (Brassica napus L. ’Tower’). The rapeseed (RS) was prepared commercially by flaking and then cooking, but the enzyme myrosinase was not completely inactivated. Iodinated casein supplementation significantly increased growth rate, feed efficiency, the blood circulating levels of thyroxine and protein-bound iodine but produced no significant effect on feed intake or blood cholesterol values. Iodinated casein largely prevented thyroid englargement and the thyroids appeared histologically normal. There were no effects due to iodinated casein on livers, hearts or kidneys. These results indicate that iodinated casein is beneficial for growth and thyroid function of young pigs between 6.8 and 14.0 kg liveweight fed diets containing 20% ground, cooked Tower rapeseed and in which myrosinase is not completely deactivated. A second experiment with 48 pigs fed four diets (control; RS and pea protein concentrate PPC; RS and rapeseed meal RSM, and PPC) resulted in superior growth on the control diet and poorest feed conversion on the PPC diet. The same level (18.9%) of PPC, fed with RS, resulted in better feed utilization.


1982 ◽  
Vol 54 (2) ◽  
pp. 145-153
Author(s):  
Liisa Syrjälä-Qvist ◽  
Mikko Tuori ◽  
Jouko Setälä

Twenty-four dairy cows were used in an experiment in which 1) soybean meal, 2) rapeseed meal and 3) rapeseed meal plus urea were compared for feeding value, when given as protein sources in grass silage- and hay-based feeding. About 25 % of the digestible crude protein required for milk production was replaced with these protein sources. The rapeseed meal was mainly of the Span variety. The rapeseed meal composed 13% of a concentrate mixture also containing barley, oats and molassed beet pulp. The daily consumption of rapeseed meal was up to 1.2kg/cow, the average being 1.0kg/cow. As a protein source the rapeseed meal was almost equivalent to the soybean meal. There were no significant differences between the groups in the intake or utilization of the feeds, milk production or milk composition, or liveweight changes. The replacement of silage protein with rapeseed meal or with soybean meal improved the utilization of the protein of the whole ration for milk production.


2005 ◽  
Vol 2005 ◽  
pp. 148-148
Author(s):  
T. Ghoorchi ◽  
V. Rezaeipour ◽  
S. Hasani ◽  
G. Ghorbani

The use of oilseeds is an important option for increasing the energy density of ruminant diets, in addition to supplying dietary protein to support high rates of production. Ruminal degradation of dietary feed CP is an important factor influencing ruminal fermentation and AA supply to dairy cattle. Ruminal protein degradation is described most often by first order mass action models. One of the more complex of these models is the Cornell Net Carbohydrate and Protein System (CNCPS). In the model, feed CP is divided into five fractions (A, B1, B2, B3 and C) which sum to unity. The five fractions have different rates of ruminal degradation. Fraction C contains proteins associated with lignin and tannins and heat – damaged proteins such as the Maillard reaction products. The remaining B fractions represent potentially degradable true protein. Glucosinalate levels in the rapeseed meal reduce its feeding value as it makes meal unpalatable and toxic to animals. Several studies suggest that certain oils primarily through changes in peripheral deiodination of the inactive hormone thyroxine (T4) to the active hormone triiodothyronine (T3).


2002 ◽  
Vol 18 (3) ◽  
Author(s):  
M. Liang ◽  
S. Huang ◽  
H. E. Huff ◽  
M. S. Kerley ◽  
F. Hsieh

Author(s):  
V.R. Fowler ◽  
A. Pusztai ◽  
R. McWilliam ◽  
R. Frank

The success of the oilseed rape crop in Northern Europe for the production of high quality oil has not been matched by the quality of the extracted meal as a source of supplementary protein for simple stomached farm animals such as pigs and poultry .The meal of most autumn-sown and winter-hardy varieties of rapeseed contains a range of antinutritive factors. These include glucosinolates, tannins, sinapines and saponins. Earlier attempts to improve the feed value using heat treament have been disappointing and it is clear that the same procedures which were so successful in enhancing the value of the soyabean crop are not particularly appropriate for rapeseed. The purpose of the study described below was to examine the effect of different treatments of defatted rapeseed on its nutitive value to rats and to project the work to simple methods for improving the feeding value of conventional rapeseed meals for pigs.


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