The ability of the lesser mealworm, Alphitobius diaperinus (Panzer), commonly known as the darkling beetle, to transmit marker Salmonella Typhimurium to day-of-hatch broiler chicks was evaluated, as well as the spread to nonchallenged pen mates. In trial 1, day-of-hatch chicks were orally gavaged with 4 larval or 4 adult beetles that had been exposed to marker Salmonella-inoculated feed for 72 ...

A 21-day-long experiment was performed on 160 one-day-old “Ross" broiler chicks. This research was done with the aim of investigating pathomorphological changes in broilers exposed to a relativly small amount of T-2 toxin (2 ppm) and the possibility of prevention and/or alleviating adverse effects of T-2 toxin using various feed additives. Pathohistological examination showed negative consequen...

Background: Broilers lung mechanisms that regulate endothelin (ET) in the lung are complex and poorly understood. Objectives: Methods: In this experiment lung ET-1 mRNA levels and lung mRNA expression for the ET(A) receptors were determined in lung tissue weekly (term = 42 days, intervals = 7 days). Serum endothelin concentration was also measured at these ages. Results: The study showed that e...

Day-old broiler chicks (n=30) were obtained from a commercial hatchery and inoculated, either orally or intracloacally, with a characterized strain of Campylobacter jejuni. At 1 hr, 1 day, and 1 wk after inoculation, broilers (n = 5) from the orally and intracloacally inoculated groups along with control birds (n=4) were humanely killed by cervical dislocation. The broilers from the control and...

Mast cells are found close to surfaces that interface with the external environment, particularly skin, respiratory, and digestive systems. The number of mast at a given site can vary depending on host's location immunologic status. This study was undertaken determine their heterogeneity in broilers' ileum during post-hatching period. were studied tissue 0-, 7-, 21- 42-day old broilers. stained...

This research was conducted to investigate the effect of zinc oxide Nanoparticles (nano-ZnO) in diets on the performance, antioxidant status, enzymes activity and some hematological parameters of broiler chickens. A total of 600 one–day-old male Ross 308 broilers were allocated to four treatment groups with five replications of 30 each from day 1 to 42 day of age. The birds were continuously di...

Background: Garlic is considered a natural growth promoter in animals, but the effects on productive performance of broilers are variable. Therefore, impact and intestinal morphometry were evaluated to know using different levels purple garlic broilers' diet. Methods: Clinically healthy 1-day-old Cobb Vantress 500 (n=98, with an equal number two sex) randomized into four dietary treatment group...

This study evaluated the effects of live yeast (LY, Saccharomyces cerevisiae) on growth performance, nutrient digestibility, immune function, antioxidant status and intestinal morphology broilers. A total 224, 1 day-old broilers were assigned 4 treatments (7 replications, 8 chicks each) fed a basal diet control group (CTR); antibiotic (CTC) diets with chlortetracycline at 75 mg/kg; LY-1 LY-2 gr...

This study was designed to evaluate the protection mechanism of oral administration of Clostridium butyricum against Salmonella enteritidis (SE) colonization in broilers. In the current study, 180 one-day-old healthy Arbor Acres (AA) broilers were meanly grouped into three, with three replicates of 20 birds each. An negative control group was fed basal diet without SE challenge and a positive c...

To effectively develop and utilize high-quality Tianfu broilers, this study evaluated the morphological structural characteristics of immune organs such broilers with different strains (HS1 HS2) at developmental stages analyzed distribution mast cells by toluidine blue staining. Moreover, localization expression immunoglobulin, complement C3, C4 CD3 in were also detected. The results showed tha...