Versuche über den Nährwert von Johannisbrot beim Schwein, insbesondere über die Beeinträchtigung der Eiweißverdaulichkeit durch die Gerbsäure des Futtermittels

Five trials were conducted to elucidate the cause of the growth-inhibitory effect of carob meal in chick rations, with special emphasis on estimating its productive energy value. The growth-depressing factor of carob meal could not be extracted with methanol, ethanol or ethyl acetate. Consecutive extractions with cold and hot water left a residue which did not affect growth. The cold-water extract had a slight, and the hot water extract a distinct, inhibitory effect on feed consumption, without affecting feed utilisation. This reduced feed intake may be due to the presence of tannin-like compounds, which seem to affect appetite.Supplementation of diets containing carob with fat resulted in growth similar to that of the control. The data presented indicate that carobs do not contain any toxic factors and that their low caloric value is the major factor responsible for growth depression. The energy value of carobs should be calculated on the basis of their sugar content as the only nutrient available to the chicks.

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Low caloric value of carobs as the possible cause of growth depression in chicks

Alumot¹,

Nachtomi²,

Bornstein³

1964

J Sci Food Agric

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Versuche über den Nährwert von Johannisbrot beim Wiederkäuer, insbesondere über die Beeinträchtigung der Eiweißverdaulichkeit durch die Gerbsäure des Futtermittels

Oslage

Becker

1958

Archiv für Tierernaehrung

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Versuche uber den Nahnvert von Johannisbrot beim Wiederkauer, insbesondere uber die Beeintrachtigung der Eiweiherdaulichkeit durch die Gerbsaure des Futtermittcls In einer friiheren Mitteilung hatten DECKER und Mitarbeiter an dieser Stelle' iiber Versuche mit Johannisbrot an Schweinen, erganzt durch Losungsversuche in vitro, berichtet. In den Untersuchungen hattc sich nicht nur das Eiweil3 des Johannisbrotes als fur Schweine vollig unverdaulich enviesen, sondern es wurde dariiber hinaus cine erhebliche Depression in der Vcrdaulichkeit des Ei\veif,es der anderen Futterkomponenten ermittelr. ~ Analysen s. ~~~~~~~k~t } 1. Versuch Iiot Hammcl A1 111 .

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Food Intake Depression and Other Metabolic Effects of Tannic Acid in the Rat

Glick

Joslyn

1970

The Journal of Nutrition

100

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Versuche über den Nährwert von Johannisbrot beim Schwein, insbesondere über die Beeinträchtigung der Eiweißverdaulichkeit durch die Gerbsäure des Futtermittels

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Low caloric value of carobs as the possible cause of growth depression in chicks

Low caloric value of carobs as the possible cause of growth depression in chicks

Versuche über den Nährwert von Johannisbrot beim Wiederkäuer, insbesondere über die Beeinträchtigung der Eiweißverdaulichkeit durch die Gerbsäure des Futtermittels

Food Intake Depression and Other Metabolic Effects of Tannic Acid in the Rat

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