scholarly journals Effect of Different Zilpaterol Hydrochloride Levels and Feeding Methods on the Growth Performance, Carcass Traits and Blood Parameters of Male Japanese Quails During Two Weeks of the Finishing Period

2015 ◽  
Vol 17 (4) ◽  
pp. 567-574 ◽  
Author(s):  
M Mohammadi-Arekhlo ◽  
A Towhidi ◽  
H Moravej ◽  
M Sharafi
2016 ◽  
Vol 88 (2) ◽  
pp. 1011-1021 ◽  
Author(s):  
MOHAMMADREZA POURAKBARI ◽  
ALIREZA SEIDAVI ◽  
LEILA ASADPOUR ◽  
ANDRÉS MARTÍNEZ

Probiotic effects on growth performance, carcass traits, blood parameters, cecal microbiota, and immune response of broilers were studied. Two hundred one-day-old male chickens were allocated to one of five treatments (four replicates of 10 birds per treatment): control, and the same control diet supplemented with 0.005%, 0.01%, 0.015% and 0.02% probiotics. Probiotics in feed at 0.01% or higher levels of supplementation improved body weight gain (+12%) and feed conversion rate (-5%) compared with the control. There were no effects on carcass traits, but the relative weights of drumsticks and wings showed increasing and decreasing linear responses, respectively, to probiotic supplementation level. Blood plasma glucose and albumin contents linearly increased (from 167.1 to 200.5 mg dl-1, and from 1.70 to 3.25 g dl-1) with increasing probiotic supplementation. Triglycerides and cholesterol contents were lower in probiotic supplemented treatments (average contents 71.3 and 125.3 mg dl-1 vs. 92.6 and 149.9 mg dl-1 in the control). Probiotics decreased cecal Escherichia coli counts, but had no effects on immunity related organs or immune response. The linear trends, either positive or negative, observed in many of the parameters studied, suggest that more studies are needed to establish the optimal concentration of probiotics in broiler feed.


2021 ◽  
Vol 49 (1) ◽  
pp. 472-478
Author(s):  
Samantha Sigolo ◽  
Amir Ahmadian ◽  
Alireza Seidavi ◽  
Antonio Gallo ◽  
Aldo Prandini

Sign in / Sign up

Export Citation Format

Share Document