This study was conducted to assess the influence of dietary protein content in poultry when using the 15N-leucine single-injection method to determine endogenous amino acid losses (EAALs) in poultry. Forty-eight cecectomized roosters (2.39 ± 0.23 kg) were randomly allocated to eight dietary treatments containing protein levels of 0, 3%, 6%, 9%, 12%, 15%, 18% and 21%. Each bird was precisely fed...

Immunocompetence of the 2001 Ross 308 broiler strain and the 1957 Athens Canadian Randombred Control (ACRBC) strain was compared when they were given diets representative of those that were being used in 1957 and 2001. Antibody response against SRBC, in vivo lymphoproliferation against Phytohemagglutinin-P (PHA-P), and inflammatory and phagocytic responses of the macrophages were measured. The ...

ABSTRACT This study was designed to determine the effect of a combination propionic-acetic acid on body weight, relative weight some organs, lactic bacteria, and intestinal pH neonatal broilers. A total 60 1-day-old Ross 308® broiler chickens were randomly placed in metabolic cages two treatments, three replicates, ten birds per replicates. The treatments consisted control diet (CD) CD + 0.03% ...

this study was carried out to evaluate the effect of onion extract on growth performance, carcass characteristics and some blood metabolites in ross and cobb broiler chickens. one hundred sixty, 1-d-old broiler chickens (mean initial weight: 36.5 ± 1 g) of male sex (ross-308 and cobb) were randomly conducted as randomized complete design with 4 treatment and 4 replication. the experimental grou...

Several findings on the semen characteristics of domestic chickens have revealed that ecotype and age significantly affect quality. There is, however, lack data effects Tanzanian native roosters. This study evaluated effect ecotypes (Ching’wekwe, Morogoro-medium Kuchi) ages (11-15 24-28 months) A total 192 samples were collected from 12 roosters (four each ecotype) using abdominal massage techn...

objective: manipulating the dietary fatty acid (fa) content can alter fa profiles of reproductive tissues. numerous researchers have evaluated the effect of fish oil (fo) supplementation on reproductive characteristics in domestic animals, but reliable information concerning dietary fo effects on semen quality and testosterone concentrations in dogs has not been reported. therefore, this study ...