scholarly journals Evaluation of Rapeseed Meal as a Protein Supplement for Laying Hen Diets

1971 ◽  
Vol 50 (5) ◽  
pp. 1382-1386 ◽  
Author(s):  
J.D. Summers ◽  
G. Rajaratnam ◽  
W.F. Pepper
Author(s):  
Duncan Pullar

The use of barley and a protein supplement as a system for intensively finishing calves for beef has been widely used commercially since Preston, Whitelaw, Aitken, MacDermaid and Charleson (1963) originally developed the concept. Once the basic requirements for protein and energy were established the concern of researchers turned to how these requirements could be met at minimal cost. Obviously the most profitable combination of ingredients depends on the prices prevailing at the time, but a variety of raw materials, which may be used to cheapen intensive cereal rations, have been tried experimentally. In the present study the effects of using rapeseed meal (RSM) or maize gluten (MG) as protein supplements to either barley (B) or wheat (W) on the growth and carcass characteristics of Charolais cross Friesian bulls were assessed. The wider availability of double low rapeseed meal (low in both erucic acid and glucosinolates) and maize gluten, combined with their relative cheapness, has made them attractive raw materials for inclusion in ruminant feeds.


Author(s):  
Isobel Vincent ◽  
R. Hill

Low-glucosinolate rapeseed meal (<20 μmol/g) is likely to replace the high-glucosinolate meal currently produced in the UK, and in this experiment the use of low-glucosinolate rapeseed meal (RSM) as the sole protein supplement in a compound feed for milk production in cows was assessed. There were three compound concentrate feeds of similar energy and protein content, 0% RSM (group A), 15% RSM (B) and 30% RSM (C). The additional protein in diets A and B was provided as soyabean meal (SBM).Eighteen Friesian cows were divided into three groups, balanced with regard to previous yield and number of lactations, and three weeks after calving were given one of the compound feeds in a 3x3 changeover experiment; each of the three feeding periods was four weeks. Barley meal was given as a parlour feed, 1 kg air dry at each milking, and the compound concentrate and grass silage were given at Broadbent-Calan gates in quantities related to expected milk yield.


Author(s):  
Isobel C Vincent ◽  
J Thompson ◽  
R Hill

Concentrate feed with high-glucosinolate rapeseed meal (BRSM) as the sole protein supplement was eaten less readily by weaned calves than a similar feed based on soyabean meal (Stedman et al, 1983), and this was so whether intake was measured during continuous ad libitum feeding, or for short periods, 0.5 h, after twice-daily feeding with changes of feed each day. In these and other experiments with calves (Stedman and Hill, 1987), concentrate feeds based on low-glucosinolate rapeseed meal were eaten more readily than those based on high-glucosinolate meal, but intake of the low-glucosinolate feeds rarely matched that of the corresponding feed containing soyabean meal.


1968 ◽  
Vol 48 (2) ◽  
pp. 189-197 ◽  
Author(s):  
J. P. Bowland ◽  
F. W. Schuld

First- and second-litter progeny from sows fed either 0 or 8% solvent-extracted rapeseed meal in replacement for isonitrogenous amounts of soybean meal and wheat was used to evaluate solvent-extracted rapeseed meal as a protein source. There was no influence of the dam’s diet on gain, efficiency of feed utilization, digestible (DE) and metabolizable energy (ME) or digestible nitrogen (DN) and nitrogen retention in the progeny. In pigs from first litters, the feeding of 8% rapeseed meal, compared with 0% rapeseed meal, depressed feed intake and rate of gain in the finishing period from 55 to 90 kg liveweight, and resulted in reduced gain and poorer efficiency of feed utilization for the overall experiment from 6 kg initial weight. Carcasses from rapeseed meal-fed pigs were leaner. Gilt carcasses were leaner than barrow carcasses. With second-litter pigs, there were no significant differences associated with dietary treatment or sex. There were no significant differences in DE or ME or in DN and nitrogen retention between pigs receiving 0 or 8% rapeseed meal in either the starting diets at 6 weeks of age or the growing diets at 40 kg liveweight.


2015 ◽  
Vol 15 (1) ◽  
pp. 129-142 ◽  
Author(s):  
Andrzej Rutkowski ◽  
Sebastian A. Kaczmarek ◽  
Marcin Hejdysz ◽  
Sebastian Nowaczewski ◽  
Dorota Jamroz

Abstract The aim of the study was to determine the usefulness of two protein concentrates composed of rapeseed meal and new cultivars of narrow-leaved and yellow lupine, peas in laying hen diets and their influence on birds’ performance and egg characteristics. The experiment was conducted with 180 layers kept in individual cages. The birds were randomly assigned to three treatments, with 60 hens in each and during the period of 17 weeks, they were fed diets: I - containing soybean meal as a protein source, II - containing protein concentrates composed of mixture of lupines, peas (19.48% of diet) and rapeseed meal, III - containing protein concentrates composed of a mixture of lupines and peas (27.68% of diet). The body weight, laying rate, egg weight, feed intake and feed conversion ratio (FCR) and egg characteristics were registered. After 9 weeks of experiment, a decrease of laying rate was recorded in treatment III. The mean value of laying rate for 17 weeks amounted to 82.7 (I), 82.5 (II) and 75.9% (III) (P<0.01). The egg weight was diversified already after 4 weeks of egg production and averaged 57.9 (I), 55.9 (II) and 54.9 g (III) (P<0.05). Feed intake amounted to 108 (I), 111 (II) and 104 g per hen/day (III), and FCR was 2.05, 3.17 and 2.23 kg/kg egg weight, respectively. As to egg characteristics, increases of white index (P<0.05), Haugh unit score and yolk colour in treatment III were observed but egg shell thickness was found significantly reduced. In conclusion, the use of about 27.68% of legume seed in laying hen diet affected negatively performance results but about 19.48% of these seeds and 8% rapeseed meal in diets could be accepted as a soybean meal substitute.


1984 ◽  
Vol 56 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Jouko Setälä ◽  
Liisa Syrjälä-Qvist ◽  
Esko Poutiainen

The experiment was performed with 21 Ayshire cows 4—16 weeks post calving. Cows received restricted amounts (according to calculated intake) of unwilted grass silage, preserved with a mixture of acetic acid and formalin and two kilograms of hay/cow/day. A concentrate mixture including dried and propionic acid treated barley and oats together with a mineral-vitamin mixture was given 0.3 kg/kg FCM. During the standardization period (2 weeks) protein feeding of the cows was performed according to the DCP requirements and the diet was supplemented with soybean meal if necessary. For the adaptation period (3 weeks) and the comparison period (8 weeks) the cows were divided in 3 equal groups of 7 cows (G1, G2, G3). G 1 had no protein supplement in the diet. The diets of G 2 and G 3 were supplemented correspondingly either with rapeseed meal or formaldehyde treated urea on the basis of the UDP (undegradable feed protein) requirements (G2) and the DCP requirements (G3) of the cows. Efficient protein degradabilities in the total diets during the comparison period varied from 77 to 85 % when the determinations were made with the nylon bag technique. The highest degradabilities were found for the diet of G3 and the lowest for G 2. Significantly (P < 0.05, 0.01) the highest yields of FCM and milk protein were recorded for Group2 (G2) in which the cows received protein supplement according to their UDP requirements. Using a factorial approach, conversion of protein absorbable in the small intestine to milk protein was calculated to be 66.5 ± 0.8 % when all the cows in three groups were taken into account.


Author(s):  
Isobel C. Vincent ◽  
R. Hill ◽  
H. LI. Williams

To investigate the suitability of using high levels of British (high glucosinolate) rapeseed meal (RSM), 80 adult Suffolk-Mule ewes of mean live-weight 64.8 kg (s.e. 0.5) were divided into four balanced groups. Three of the groups were allocated to a concentrate diet containing 20% RSM as the major protein supplement: extracted (B), expeller (C) and extruded (D). The control group (A) was given a diet containing 16.5% soyabean meal (SBM) as the only protein supplement. The remainder of these pelleted diets consisted of barley, molassine meal, oat husks, minerals and vitamins. All four diets contained similar levels of protein and energy.The ewes were fed 0.7 kg/day during maintenance, 1 kg/day durino mating and increasing amounts from late pregnancy up to a maximum of 2.5 kg/day during lactation. Barley straw was available ad libitum. The ewes were weighed twice monthly. Jugular blood samples were taken monthly for thyroxine (T4) and thiocyanate (-SCN) analyses of plasma, also every five days during mating and the first two months of pregnancy for profiles of progesterone in plasma. The ewes were exposed to raddled entire rams for six weeks during November and December.


1983 ◽  
Vol 50 (3) ◽  
pp. 661-671 ◽  
Author(s):  
Pauline A. Lee ◽  
R. Hill

1. The voluntary food intake, during 30 min periods after morning and afternoon feeds and during 24 h, by growing pigs given diets containing rapeseed meal (Rsm) or soya-bean meal (Sbm) as the only protein supplement was determined. One diet was offered at a time and a daily changeover sequence of feeding was followed.2. Four rapeseed meals were compared, one from seeds of British-grown winter Brassica napus varieties (Brsm) and the others from seeds of the var7ieties Tower (Trsm), Erglu (Ersm) and Span (Srsm). The effects on feed intake of adding flavouring substances to the Brsm diet were also determined. The flavouring substances were molassine meal, sucrose and four commercially-available substances: P, pig nectar; H, hog nectar; S, sow nectar and A, apple.3. Intake of the Brsm diet was significantly less than those of the Sbm, Trsm and Ersm diets.4. Addition to the Brsm diet of molassine meal or sucrose at 50 or 100 g/kg did not improve voluntary feed intake. None of the commercial flavouring substances raised the intake of the Brsm diet to the level of the Sbm diet but they improved intake of the Brsmdiet to varying extents. Flavourings H, S and A gave similar improvements which were substantial.5. The Sbm, Brsm and Trsm diets were each fed ad. lib. to groups of growing pigs continuously for 4 weeks. Weekly feed intakes and weight gains were determined. Feed intakes and weight gains followed closely the intake values obtained in the changeover experiments. The highest values were for the Sbm diet; those for the Trsm diet were slightly lower and those for the Brsm diet were substantially and significantly lower.6. The glucosinolate, sinapine and tannin contents of the rapeseed meals were determined and the results suggested that voluntary feed intake of diets containing these meals was related to their glucosinolate content, but not to their sinapine or tannin contents.


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