Rapeseed meal‐glucosinolates and their antinutritional effects Part 3. Animal growth and performance

Mawson, R.; Heaney, Robert K.; Zduńczyk, Zenon; Kozłowska, H.

doi:10.1002/food.19940380209

Cited by 59 publications

(35 citation statements)

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“…The adequate consumption of rape cake diet is in agreement with the results reported by other authors (Papas et al, 1979;Fisher, 1980;Wheeler et al, 1980;Ferlay et al, 1992). Impaired feed taste and decreased consumption are usually observed when rapeseed products with high GLS levels are fed to calves (Schingoethe et al, 1974;Papas et al, 1979;Mawson et al, 1993b;1994a). Fiems et al (1985) recorded a drop in the rape cake starter consumption in favour of an increased consumption of hay.…”

Section: Discussionsupporting

confidence: 81%

“…These substances account for the bitter taste of feed, and the products of their ruminal hydrolysis (nitriles, thiocyanates, isothiocyanates) Supported by the Ministry of Agriculture of the Czech Republic (Grant No. MZE 0002716201) show goitrogenic effects, cause inflammations of the digestive tract, kidneys and urinary tract, hepatic and thyroid hypertrophy and reduce the iodine milk content (Papas et al, 1979;Schone et al, 1994;Mawson et al, 1994a;Kalač and Míka, 1997). …”

mentioning

confidence: 99%

“…Sci., 51, 2006 (11): 491-501 show goitrogenic effects, cause inflammations of the digestive tract, kidneys and urinary tract, hepatic and thyroid hypertrophy and reduce the iodine milk content (Papas et al, 1979;Schone et al, 1994;Mawson et al, 1994a;Kalač and Míka, 1997). …”

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confidence: 99%

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The use of treated rape cake in a calf starter diet

Göpfert¹,

Trčková²,

Dvorák³

2006

CZECH J ANIM SCI

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ABSTRACT:The objective of the experiment was to evaluate the effect of starter diet containing 10% of treated rape cake (TRC) with a reduced glucosinolate content on calf growth, development and health. The experiment included 45 calves allocated into 3 groups. After the colostrum period (5 days) the calves were fed 4 l of pooled fresh milk per calf/day and one of the starters ad libitum. The control group (S) was fed Standard starter with components with a standard nutrient content including fibre. Comparative group T was fed Telstar starter, which contained whole maize kernels and protein pellets. Experimental group G was fed Grant starter containing 10% of treated rape cake. The calves were fed hay ad libitum from 10 weeks of age. The average starter consumption (calf/day) over a 90-day feeding period was 1.34, 1.72 and 1.45 kg of the Standard, Telstar and Grant diet, respectively. An insignificantly higher body weight of calves was recorded for the Grant group at the end of the experimental period. When the calculated indices were compared, it was obvious that the weight gains obtained with experimental starters Grant and comparative Telstar were by 4.0% higher and by 5.4% lower, respectively, than in the control group Standard. No significant changes in the parameters of nitrogen, energy, lipid and mineral metabolism, health status, hepatic parenchyma and thyroid function were observed throughout the experimental period. The diet based on experimental starter Grant had no adverse effect on the ruminal fermentation in calves. It may therefore be concluded that the starter diet with 10% content of treated rape cake had no adverse effect on calf growth and performance.Keywords: Brassica napus; treated rape cake; nutrient consumption; weight gain; metabolic profile; rumen fluid 492Original Paper Czech J. Anim. Sci., 51, 2006 (11): 491-501 show goitrogenic effects, cause inflammations of the digestive tract, kidneys and urinary tract, hepatic and thyroid hypertrophy and reduce the iodine milk content (Papas et al., 1979;Schone et al., 1994;Mawson et al., 1994a;Kalač and Míka, 1997).The long-term feeding of rapeseed diets leads to infertility in cows, reduction in milk production and weight gain and the abortion and stillbirth rates increase (Wemheuer, 1993;Mawson et al., 1994b). The risk associated with rapeseed feeding has been reduced significantly by the breeding of new oilseed rape cultivars with lower content of GLS and erucic acid. A reduction of antinutrients is likewise enhanced by some technological treatments of extracted rapeseed meal such as extraction or esterification. Nevertheless, the content of extracted rapeseed meal in the rations should not exceed 15 to 25% for cattle, 15 to 20% for dairy cows and 2 to 12% for calves (Männer, 2001).GLS content remains unchanged in rape cake that has not been subjected to extraction or esterification. The adverse effects of GLS on animal health may be reduced by increasing iodine dietary intake or reducing their levels in the diet by ferric or copper ions, ...

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Section: Discussionsupporting

confidence: 81%

mentioning

confidence: 99%

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The use of treated rape cake in a calf starter diet

Göpfert¹,

Trčková²,

Dvorák³

2006

CZECH J ANIM SCI

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“…Among them, glucosinolates, whose metabolites are toxic, were the primary limiting factor before the double low varieties, especially canola, were successfully developed. Although glucosinolate content was considerably decreased in contemporary commercial varieties, low levels still influence palatability, growth performance, reproduction, thyroid function, liver and kidney function of non-ruminant animals and fish [2][3][4][5][6][7][8]. Therefore, it is necessary to further reduce the glucosinolate content to improve the feeding value of rapeseed meals.…”

Section: Introductionmentioning

confidence: 95%

Detoxification of Rapeseed Meals by Steam Explosion

Dong

2011

J Americ Oil Chem Soc

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Steam explosion was evaluated as a detoxification method for rapeseed meals. A series of two factor experiments were performed with different steam pressures (1.0, 1.2, 1.4, 1.6, 1.8, 2.4, 3.2 and 4.0 MPa) and different treatment times (30, 60, 90, 120, 150 and 180 s). When the steam pressure was increased to 1.6 MPa or higher, 99% glucosinolates could be removed within 180 s. Their toxic breakdown products, including isothiocyanates, oxazolidinethiones and nitriles, were also reduced by 97, 93 and 59%, respectively. A model experiment confirmed that they were taken away by the steam. The effect of steam explosion on amino acids was also investigated. Lysine, arginine, aspartate, cysteine, methionine and tryptophan contents were reduced by 21, 24, 14, 13, 17 and 8%, respectively. Steam explosion is a fast and simple detoxification method, but it negatively affects amino acids.

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“…Rat 0.5 µmol per gram diet [16] Pig 0.78 µmol per gram diet [17] 2 µmol per gram diet with added supplementation of at least 1000 µg Iodine/kg diet [18] Poultry 2-4 µmol per gram diet [19] Rabbit meat 7 µmole per gram diet [20] Growing steers 10 to 15 µmol per gram diet [21] Growing calves 7.7 µmol per gram diet [19] Dairy cow 11 µmol per gram diet [22] Citation: Tripathi MK, Mishra AS (2017) Prospects Water soaking…”

Section: Animal Species Glucosinolates Level (Maximum Upper Limit) Rementioning

confidence: 99%

Prospects and Problems of Dietary Glucosinolates in Animal Feeding

Tripathi¹,

As²

2017

J Adv Dairy Res

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Brassica originated feed and fodders are the chief source of glucosinolates in animal diets. High intake of glucosinolates induce several health and production problem in animals, however low glucosinolates containing meals may be good source of protein especially of sulfur containing amino acids. Recent research on glucosinolates shown that feeding of low glucosinolates containing meals reduce fungus infestation of ration, increase isothiocynate content of animal produce and increased peripheral fat with higher contents of unsaturated fatty acids (C 18:00 , 1 trans , C 22:2 ) in carcass and milk fat, are advantages of Brassica meal feeding because isothiocyantes and unsaturated fatty acids exerts anti-carcinogenic properties. The deleterious effects of high glucosinolate containing meals could be eliminated using a suitable detoxification technology and keeping the level of glucosinolate within tolerable limits.

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Rapeseed meal‐glucosinolates and their antinutritional effects Part 3. Animal growth and performance

Cited by 59 publications

References 59 publications

The use of treated rape cake in a calf starter diet

The use of treated rape cake in a calf starter diet

Detoxification of Rapeseed Meals by Steam Explosion

Prospects and Problems of Dietary Glucosinolates in Animal Feeding

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