INVESTIGATIONS ON THE DIGESTIBILITY OF ME AT AND BONE MEAL AND MEAT MEALS IN PIGS

One meat and bone meal and three meat meals, which - judged by their r ange in protein content - represented the common ''types'' available c ommercially, were analysed chemically and in animal trials. Besides th e content of crude protein also amino acids, crude fat, crude ash and gross energy were analysed for. The digestibility of crude nutrients w as determined by means of difference trials. The contents of crude nut rients showed only slight deviations as compared to the known mean val ues of respective types. In comparison, the ash content of the samples analysed here was slightly lower and the fat content slightly higher. For protein a digestibility of 83% to 86% was found and for the diges tibility of the crude fat the values were 67%, 85% and 90% as dependin g upon the particular type of product. The high digestibility in conju ction with the crude nutrient contents resulted in a high metabolisabl e energy content of all products.