scholarly journals Effects of dietary Enterococcus faecium NCIMB 11181 supplementation on growth performance and cellular and humoral immune responses in broiler chickens

2019 ◽  
Vol 98 (1) ◽  
pp. 150-163 ◽  
Author(s):  
Yuanyuan Wu ◽  
Wenrui Zhen ◽  
Yanqiang Geng ◽  
Zhong Wang ◽  
Yuming Guo
Keyword(s):  
Immune Responses ◽  
Growth Performance ◽  
Enterococcus Faecium ◽  
Broiler Chickens ◽  
Humoral Immune ◽  
Humoral Immune Responses

scholarly journals The effect of <i>Myrtus communis</i> oil extract on growth performance, serum biochemistry and humoral immune responses in broiler chicks fed diet containing aflatoxin B1

2013 ◽  
Vol 56 (1) ◽  
pp. 842-850 ◽  
Author(s):  
M. M. Saei ◽  
A. A. Sadeghi ◽  
H. Ahmadvand
Keyword(s):  
Immune Responses ◽  
Growth Performance ◽  
Aflatoxin B1 ◽  
Broiler Chickens ◽  
Serum Biochemistry ◽  
Influenza Viruses ◽  
Myrtus Communis ◽  
Humoral Immune ◽  
Humoral Immune Responses ◽  
Antibody Titers

Abstract. A study was conducted to investigate the capability of Myrtus communis essential oil (MCE) in counteracting the deleterious effects of aflatoxin B1 (AFB1) on growth performance, serum biochemistry and humoral immune responses in broiler chickens. In a completely randomized design, 300 day-old male chicks were assigned to four treatments with five replicates of 15 birds for 42 days. Chickens, up to day 7 of age, were fed the same diet and then, they were fed the experimental diets. The dietary treatments were 1) the negative control (no dietary aflatoxin or MCE), 2) the positive control (diet containing AFB1 at 0.5 mg/kg, without MCE), 3) diet containing AFB1 at 0.5 mg/kg plus 500 mg/kg MCE, and 4) basal diet containing 500 mg/kg MCE, without AFB1. Growth performance was measured from day 7 to 42. Serum biochemical parameters, organ weights on day 42 and the antibody titers against Newcastle and influenza viruses on day 28 of age were determined. Addition of aflatoxin to diet decreased (P<0.05) the weight gain and feed intake and MCE supplementation diminished (P<0.05) the inhibitory effects of AFB1 on the growth performance. Addition of AFB1 to diet of chicks increased the serum activities of aspartate aminotransferase (AST), alkaline aminotransferase (ALT), alkaline phosphatase (ALP), and decreased the antibody titers against Newcastle and influenza viruses. Addition of MCE to diet alleviated the negative effects of AFB1 on these parameters (P<0.05). In conclusion, our results showed that addition of MCE may reduce the adverse effects of AFB1 on broiler chickens.

scholarly journals INFLUENCE OF MYCOTOXINS ON IMMUNE RESPONSES AGAINST SALMONELLA TYPHIMURIUM INFECTION OF BROILER CHICKENS

2020 ◽  
Vol 51 (6) ◽  
pp. 1716-1725
Author(s):  
Jawad & ALwan
Keyword(s):  
Immune Responses ◽  
Broiler Chickens ◽  
Serum Levels ◽  
Phagocytic Index ◽  
High Dose ◽  
Negative Group ◽  
Humoral Immune ◽  
Humoral Immune Responses ◽  
Sterile Normal Saline ◽  
Antibody Titers

Forty broiler chickens, One - day old were randomly divided into four equal groups:  1st group was immunized with 0.5 ml of whole sonicated salmonella antigens (WSSAgs), protein concentration 1.89 mg/ml. Two dose  two weeks intervals, S/C at 7 days old  and  the  chicks  fed   contaminated diet with  mycotoxins for 7 week,   2nd group was immunized with WSSAgs only and treated  as  1st group,  3rd group fed diet contaminated with  mycotoxins  and 4th group was fed  normal diets and served as control negative group, At 30 days, skin test, phagocytic index and serum levels of antibody titers were done, then 1st ,2nd and 3rd groups were inoculated with  high dose of  virulent S.typhimurium , (1ml containing   1  10 12  CFU/ml ), I/V, and  4th group was inoculated I/V,1ml  sterile normal saline and served as control negative group , all chicks were sacrificed at  3 weeks post infection, it was recorded that mycotoxin suppress the  cellular and  humoral immune responses , phagocytic activity ,in addition to high mortality rate were found in  chicks fed contaminated diet with  and without immunization.

scholarly journals Comparison of growth performance and immune responses of broiler chicks reared under heat stress, cold stress and thermoneutral conditions

2018 ◽  
Vol 16 (2) ◽  
pp. e0505 ◽  
Author(s):  
Ali Olfati ◽  
Ali Mojtahedin ◽  
Tayebeh Sadeghi ◽  
Mohsen Akbari ◽  
Felipe Martínez-Pastor
Keyword(s):  
Heat Stress ◽  
Immune Responses ◽  
Cold Stress ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Negative Effects ◽  
Humoral Immune

This study was conducted to compare the effects of thermal stress on growth performance and some immunity variables of broiler chickens. Birds were randomly assigned to one of three thermal treatments as follows: cold stress (CS, 12±1°C), (b) heat stress (HS, 33±3 °C) and (c) thermoneutral (TN, 24±2 °C). Body weight gain (BWG), feed intake (FI), water intake (WI) and feed conversion ratio (FCR) were recorded. In order to evaluate the primary and secondary humoral immune responses, two birds per replicate were intravenously administrated with a suspension of 7% sheep red blood cell (SRBC) at 28 and 35 days. The heat-stressed broiler chickens had lower FI (-14.90%), BWG (-25.71%) and higher FCR (+13.06%) in comparison to broiler chickens reared under TN condition (p<0.001) from 1 to 42 days of age. The cold-stressed broiler chickens showed lower FI (-22.05%), BWG (-38.32%) and higher FCR (+22.47%) in comparison to birds reared under TN conditions (p<0.001). Stressed birds (CS and HS) showed decreased antibody titer against SRBC, lymphocyte count and the relative weights of lymphoid organs and increased heterophil count, heterophil to lymphocyte ratio and the serum concentration of corticosterone, in comparison to birds in TN group (p<0.001). In conclusion, HS and CS conditions have similar negative effects on performance and immunity of broiler chickens.

Sign in / Sign up

Export Citation Format

Share Document