Effect of added amino acids manufactured from poultry slaughterhouse waste by subcritical water on the productive performance of Chinese geese

Abstract

This study was conducted at the waterfowl field, Animal Production Department, Agriculture College, University of Basrah, from 7/2/2020 to 17/4/2021, to study the effect of adding amino acids manufactured from poultry slaughterhouse waste using subcritical water, assisted by Jolly heating in the productive performance of Chinese geese. A total of 90 birds were used in the study, reared to 20 weeks of age. Birds were randomly distributed to three treatments for each treatment, 3 replicates, (10 birds each replicate). add libitum feeding, some productive and economic traits have been studied. The results indicated the superiority of the second treatment T2 (a diet containing productive amino acids while reducing the proportion of soybean meal to 15%) on the average live body weight, weight gain rate and production index at all ages except from 12-14 weeks compared to the control treatment, while the same treatment showed a significant decrease on the amount of feed intake and feed conversion efficiency compared to the other of the treatments except week 16 and 12 in the amount of feed consumed and feed conversion efficiency, respectively. We conclude that the use of amino acids manufactured from critical water coupled with Jolly heating gave good results compared to imported amino acids