Energy metabolism in growing-finishing pigs fed rapeseed meal
S. Raj 1
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The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
Publication date: 1994-09-14
J. Anim. Feed Sci. 1994;3(4):297-307
Thirty six Landrace pigs from 60 to 110 kg liveweight were given diets of similar available lysine and metabolizable energy contents. The feed mixtures contained an average of 16% soya bean meal (SBM) or 21% rapeseed meal (RSM) of a double-low variety (8.7 moles glucosinolates per g fat-free dry matter). Energy retention in the body was measured by the comparative slaughter technique. The weight of the internal organs and thyroid gland and T3 and T4 hormone concentrations in blood samples taken at slaughter were also determined. The weight of the thyroid and liver were 55% (P≤0.001) and 16% (P≤0.001) higher, respectively, in the animals fed RSM. The RSM diet caused no significant difference in the chemical composition of the body gain, blood T3 and T4 levels as in the weight of the kidneys. The maintenance requirement and energy cost of protein deposition in the body of pigs did not differ between the groups (511 kJ/kg0.75/d and 68 kJ/g, respectively).
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