THE FEEDING VALUE OF TOWER RAPESEED FOR EARLY-WEANED PIGS. I. EFFECTS OF METHODS OF PROCESSING AND OF DIETARY LEVELS

Autor:	S. Ochetim, C. E. Doige, J. M. Bell, C. G. Youngs
Rok vydání:	1980
Předmět:	Rapeseed Myrosinase Pea protein Lysine Brassica Biology biology.organism_classification Crude fibre chemistry.chemical_compound Animal science Food Animals Biochemistry chemistry Isothiocyanate Animal Science and Zoology Dry matter
Zdroj:	Canadian Journal of Animal Science. 60:407-421
ISSN:	1918-1825 0008-3984
DOI:	10.4141/cjas80-050
Popis:	Tower rapeseed (Brassica napus L.), either autoclaved (121 °C, 103 kPa, 30 min), dry-heated (130 °C, 1 h) or extruded (85 °C, 30 sec), was fed to early-weaned pigs in wheat-based diets also containing pea protein concentrate. In the first three experiments, 20 or 24% rapeseed (RS) was included in the diets; in the fourth experiment, 10 and 20% levels of RS were fed. Extrusion and dry heating were only partially effective but autoclaving completely inactivated myrosinase, and reduced isothiocyanate content and the availability of lysine. Thyroid histology and function reflected the goitrogenicity associated with residual myrosinase activity in the processed RS. Increasing the dietary levels of autoclaved RS from zero to 20% of the diet had no effect (P
Databáze:	OpenAIRE
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