Toxicity of rapeseed meal and its use as a protein supplement in the diet of two hybrid strains of caged laying hens

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.

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Low-glucosinolate rapeseed meal as a protein source for milk production

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600017141 ◽

1988 ◽

Vol 1988 ◽

pp. 76-76 ◽

Cited By ~ 1

Author(s):

Isobel Vincent ◽

R. Hill

Keyword(s):

Protein Content ◽

Milk Production ◽

Rapeseed Meal ◽

Protein Supplement ◽

Grass Silage ◽

Group A ◽

Additional Protein ◽

Soyabean Meal ◽

The Uk ◽

Friesian Cows

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.

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The effects on feed intake in weaned calves of low-glucosinolate rapeseed meal as the sole protein supplement

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600019218 ◽

1990 ◽

Vol 1990 ◽

pp. 141-141 ◽

Cited By ~ 2

Author(s):

Isobel C Vincent ◽

J Thompson ◽

R Hill

Keyword(s):

Feed Intake ◽

Rapeseed Meal ◽

Protein Supplement ◽

Daily Feeding ◽

Soyabean Meal ◽

Ad Libitum ◽

Ad Libitum Feeding

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.

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RAPESEED MEAL AS A REPLACEMENT FOR SOYBEAN MEAL IN DIETS OF PROGENY FROM SOWS FED EITHER PROTEIN SUPPLEMENT

Canadian Journal of Animal Science ◽

10.4141/cjas68-025 ◽

1968 ◽

Vol 48 (2) ◽

pp. 189-197 ◽

Cited By ~ 8

Author(s):

J. P. Bowland ◽

F. W. Schuld

Keyword(s):

Soybean Meal ◽

Feed Intake ◽

Nitrogen Retention ◽

Dietary Treatment ◽

Rapeseed Meal ◽

Feed Utilization ◽

Metabolizable Energy ◽

Protein Source ◽

Protein Supplement ◽

Initial Weight

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.

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