University of Khartoum

Effect Of Season And Dietary Protein Level On Immune Response Of Three Exotic Broiler Strains In Sudan

Effect Of Season And Dietary Protein Level On Immune Response Of Three Exotic Broiler Strains In Sudan

Show full item record

Title: Effect Of Season And Dietary Protein Level On Immune Response Of Three Exotic Broiler Strains In Sudan
Author: Huwaida E.E.Malik.; Ali, O. H. A.; Mohamed, E. A. A.; Yousif, I. A.
Abstract: This study was conducted to investigate the effect of the season (summer versus winter) and dietary protein level (high versus low) using three broiler strains (Ross, Cobb and Hubbard) on immunity; heterophil/lymphocyte ratio and haemagglutination against sheep red blood cells (SRBC). Three hundred and sixty, one-day-old unsexed broiler chicks were used in this study during the summer and winter seasons, 120 from each of Ross strain, Cobb strain and Hubbard strain. Two experiments were executed in a complete randomize design (factorial arrangement 3x2x2). Each strain was divided into two groups, with six replicates (10 chicks per replicate). Group A of each strain was fed on a starter diet containing 23% crude protein for the first four weeks of age, then replaced by a finisher diet containing 21% crude protein. Group B was fed on a starter diet containing 21% crude protein replaced by a finisher diet containing 19% crude protein. Both diet were iso caloric. The results showed that the heterophil/lymphocyte ratio (H/L ratio) increased significantly (P<0.05) during the summer in both Hubbard and Ross strains, but it was not significantly affected by the season in Cobb strain. The total antibody titers against SRBC were decreased during the summer season in the three strains. The level of dietary protein showed no significant effect on H/L ratio in the three strains. Decreasing dietary protein level decreased the total antibody titers against SRBC in both Ross and Hubbard strains. Whereas, it does not affect the total antibody titers against SRBC in Cobb strain.
Description: This paper had been presented for promotion at the university of Khartoum. To get the full text please contact the other at Aburaghd69@yahoo.com
URI: http://hdl.handle.net/123456789/6487
Date: 2013


Files in this item

Files Size Format View Description

This item appears in the following Collection(s)

Show full item record

Share

Search DSpace


Browse

My Account