Production of Low‐Glucosinolate Rapeseed Meals

Mukherjee, Kumar D.; Afzalpurkar, A. B.; Nockrashy, A. S. El

doi:10.1002/lipi.19760780802

Cited by 14 publications

(2 citation statements)

References 20 publications

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“…Contrary to the present finding, McNeill et al (2004) recommended a restricted use of even 00 rapeseed meal in broiler rabbit feeding and exceeding the inclusion level by more than 10% was found to reduce the intake and growth. Possibly, the process of complete feed pelleting involves the inclusion of 30% moisture, which may favour activation of the myrosinage enzyme present in rapeseed-mustard meal and responsible for TGLS degradation (Mukherjee et al, 1976). Myrosinase is deactivated at a temperature of 708C to 808C (Gil and Macleod, 1980), which was observed in the pelleting chamber of the pelletiser.…”

Section: Effect Of Dietary Glucosinolates On Growing Rabbitsmentioning

confidence: 99%

Caecal fermentation characteristics, blood composition and growth of rabbits on substitution of soya-bean meal by unconventional high-glucosinolate mustard (Brassica juncea) meal as protein supplement

Tripathi

Mishra

Mondal

et al. 2008

Animal

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Effect of graded levels of high-glucosinolate mustard (Brassica juncea) meal as substitute of soya-bean meal (SBM) in broiler rabbit diets was studied. Forty weaning rabbits of Soviet Chinchilla and White Giant breed were randomly allocated to one of four experimental diets containing mustard meal (MM) 0, 80, 160 and 245 g/kg. The experiment lasted for 8 weeks. MM had 54.8 mg total glucosinolates (TGLSs) per g dry matter (DM). Diets had TGLS 3.8, 8.4 and 11.98 mg/g DM in 80, 160 and 245 g MM diets, respectively. MM-incorporated diets had higher digestible and linearly (P , 0.01) higher metabolisable energy (ME) content. However, the effect on total tract apparent digestibility of DM, and crude protein was quadratic. Average daily gain (ADG) reduced (P , 0.05) linearly with increasing MM levels in diet, still 80 and 160 g MM diets had similar ADG compared to that of SBM diet. Caecum weight reduced linearly (P , 0.05) with increasing MM levels in diet. The pH of caecal content ranged between 5.85 and 6.19, total N between 1.19 and 1.48 (g per 100 g) and total volatile fatty acids between 4.7 and 5.8 mmol per 100 g, and they were not statistically different. NH 3 -N ranged between 31.2 and 39.0 mg per 100 ml, and reduced linearly (P , 0.05) while trichloroacetic acidprecipitable nitrogen increased linearly (P , 0.01, ranged between 114 and 247 mg per 100 ml) with increasing MM levels in diet. Blood haemoglobin, packed cell volume and lymphocytes were higher (quadratic effects, P , 0.05) on 245 MM diet, whereas white blood cell count reduced linearly (P , 0.01). Serum aspartate aminotransferase increased linearly (P , 0.01) while alanine aminotransferase and alkaline phosphatase activity, protein, erythrocytes sedimentation rate and red blood cell counts were not affected by MM. Serum Cu, Na and K content increased linearly (P , 0.05) with increasing MM levels. Liver Cu concentration showed quadratic (P , 0.05) increase. Rabbits tolerated 8.4 mg TGLS per g diet (160 g MM per kg) during active growth without any apparent effect on health and growth. It is concluded that MM can replace up to 66% SBM protein in rabbit feeding, whereas complete replacement of SBM with MM reduced feed intake and ADG by 23% and 13%, respectively. Further studies are required to confirm these inclusion levels and glucosinolate tolerance of rabbits.

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Section: Effect Of Dietary Glucosinolates On Growing Rabbitsmentioning

confidence: 99%

Caecal fermentation characteristics, blood composition and growth of rabbits on substitution of soya-bean meal by unconventional high-glucosinolate mustard (Brassica juncea) meal as protein supplement

Tripathi

Mishra

Mondal

et al. 2008

Animal

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“…Three-stage countercurrent extractions of 60-g portions of defatted lupin flakes, divided'into batches of 20 g each, were done according to the scheme outlined elsewhere (10). The same procedure was followed as for single extractions.…”

Section: Extraction Proceduresmentioning

confidence: 99%

Lupin protein concentrates by extraction with aqueous alcohols

Blaicher¹,

Nolte²,

Mukherjee³

1981

J Americ Oil Chem Soc

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In order to remove the toxic quinolizidine alkaloids and other nonprotein constituents, hexane-defatted flakes of lupin (Lupinus rautabilis) were extracted under various conditions with ethanol, methanol or their aqueous solutions. Lupin protein concentrates containing more than 70% protein and 0.1-0.2% alkaloids were obtained in high yields by consecutive extractions, countercurrent extraction or semicountercurrent extraction of the defatted lupin flakes with either 80% ethanol or 80% methanol.

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