[Influence of the cecum, in geese fed diets containing urea, on N-metabolism and digestibility of nutrients and on urea concentration in excrements and blood].
Balance experiments were performed on six normal young geese and on six geese with a ligated caecum. The ration consisted of 43.25% barley, 30% sugar beet slices, 20% cellulose, 1.4% maize germ oil, 3% mineral mixture, 1% concentrate of vitamins and growth factors, 1.25% urea and 0.1% lysine. Daily nitrogen balance was similar in the two groups (average 1051 mg in the controls and 1090 mg in the experimental birds). Crude protein digestibility was 82.4 +/- 1.1% in the controls and 84.9 +/- 1% in the experimental birds (a significant difference). The bacterial flora of the caecum seemed to have no effect on crude fibre breakdown. Digestibility was quite low, averaging 5.7% in controls and 4.6% in experimental birds. The proportion of urea discharged in excreta was 50% in controls and 55.7% in experimental birds. Blood urea veraged 21.7 mg/100 g in controls and 22.8 mg in experimental birds (insignificant difference).
D000821:Animal Feed; D000818:Animals; D001806:Blood Urea Nitrogen; D002432:Cecum / Q000502:physiology*; D004063:Digestion; D005243:Feces / Q000032:analysis; D005777:Geese / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism*; D014508:Urea / Q000032:analysis / Q000378:metabolism* / Q000652:urine
D014508:Urea; D009584:Nitrogen
Einfluss des Caecums der Gans bei Verfütterung harnstoffhaltiger Rationen auf die N-Bilanz und die Verdaulichkeit der Nährstoffe und den Harnstoffgehalt in den Exkrementen und im Blut