Retail organic (n = 198) and conventional (n = 61) chickens were analyzed. Most organic (76%) and conventional (74%) chickens were contaminated with campylobacters. Salmonellae were recovered from 61% of organic and 44% of conventional chickens. All Salmonella enterica serovar Typhimurium isolates from conventional chickens were resistant to five or more antimicrobials, whereas most S. enterica...

In Experiment 1, chickens from various white leghorn experimental lines were inoculated with strain ADOL-Hcl of subgroup J avian leukosis virus (ALV-J) either as embryos or at 1 day of age. At various ages, chickens were tested for ALV-J induced viremia, antibody, and packed cell volume (PCV). Also, at 4 and 10 wk of age, bursal tissues were examined for avian leukosis virus (ALV)-induced prene...

In the present study, we have explored the genetic relationships between red junglefowls and domestic chickens in Southeast Asia by using single nucleotide polymorphism (SNP) markers. We genotyped 475 individuals from 17 populations of red junglefowls (4 subspecies, n=39), native chickens (10 populations, n=346) and commercial breeds (3 breeds, n=90) using PCR-RFLP for the 98 autosomal SNP mark...

Photoperiod is an important factor in stimulating broiler performance in commercial poultry practice. However, the mechanism by which photoperiod affects the performance of broiler chickens has not been adequately explored. The current study evaluated the effects of three different photoperiod regimes (short day (LD) = 8 h light, control (CTR) = 12.5 h light, and long day (SD) = 16 h light) on ...

Mucus colonization is an essential early step toward establishing successful infection and disease by mucosal pathogens. There is an emerging literature implicating specific mucin sub-types and mucin modifications in protecting the host from Campylobacter jejuni infection. However, mucosal pathogens have evolved sophisticated mechanisms to breach the mucus layer and C. jejuni in particular appe...

In Malawi, just like any other country, nutrition remains one of the challenges that indigenous chickens experience under smallholder management system. The birds are dependent on scavenging feed resources which is inadequate and chickens sometimes are supplemented with maize bran and left over’s depending on the availability. This results in low productivity in indigenous chickens. Indigenous ...