title: The substitution of protein feed by lysine-supplemented protein-rich wheat during the raisung and laying periods in hens. 6. Report. The effect of graded lysine supplemented on the crude nutritional content of the carcas of laying hens.
abstract: In the present work 8 hens taken from each of the 16 experimental groups (90 birds per group) were killed at the end of the trial period (52 weeks). The weight of the organs was determined and bones, the utilizable parts and the residual carcass were analyzed for their crude nutrient content. The experimental birds received rations containing a large proportion of high-protein wheat supplemented with varying levels of lysine. Variations in the lysine supply did not affect the mass of blood, feathers, bones, liver, stomach, heart and ovaries, including ovarian follicles. An analysis of the utilizable parts (flesh, stomach, heart, liver, follicles, fat) for crude nutrients showed that the heavier birds receiving adequate amounts of lysine contained less crude protein and more crude fat than the smaller birds. A positive correlation was found to exist between the crude ash content of these samples (expressed as %) and the levels of lysine supplied during the laying period. All the birds receiving the lysine-deficient ration during the time of rearing or during the laying period contained significantly less crude ash in their bones. Alongside with the crude ash content the phosphorus content of the bones decreased when the birds where fed the diet for laying hens.
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002645:Chickens; D004044:Dietary Proteins; D005260:Female; D008239:Lysine; D008460:Meat / Q000592:standards*
chemical_list: D004044:Dietary Proteins; D008239:Lysine
vernacular_title: Die Substitution von Eiweissfuttermitteln durch lysinergänzten proteinreichen Weizen während der Aufzucht und Legeperiode von Hennen 6. Mitteilung Einfluss gestafluss gestaffelter Lysingaben auf den Rohnährstoffgehalt des Schlachtkörpers der Legehennen