Hassan Muhammad Taleb ^(1)*

• Animal Production Department -Agricultural Technical Institute-Damascus University.

(*Corresponding author: Dr. Hassan Taleb E-Mail enghassan12345@gmail.com)

Received: 10/07/2020                          Accepted: 27/10/2020

Abstract

The research was took place on 270 chicks of Japanese quails in (Nour) poultry in Jerroud city in the period that extend between 21\8\2020 and 2\10\2020. Birds were distributed at the beginning of the experiment to 9 groups at a rate of 30 chicks for each group and each group distributed to tow repeats, and each repeat have 15 chicks. With age of one day.
All conditions of shelter and care were the same for all groups during the care period, which lasted from the age of one day to 6 weeks. But feeding of the birds in the different groups were different as follows: It included nine feed mixtures, each one differing from the other in protein content and the level of addition of yeast (3 x 3). The first factor: the effect of the level of crude protein in mixtures, as it decreased and increased by 10% than it was in (NRC1994). The second factor: the effect of the level of dry yeast in the mixtures, as they were added in the following proportions (0.0, 0.05 and 0.1%).The search is (3 × 3). The results of the research showed the following: Using high level of both of crude protein and dry yeast, and the overlapping by them in the mixtures leads to significant superiority with: average live weight index, average food conversion factor index and production number. Group (9) gave the best performance and the highest economic returning.

Key Words: Japanese Fur, Crude Protein, Dry Yeast, Food Conversion Factor.

Full paper in Arabic: PDF