Integrons have been identified as major genetic contributors to the dissemination of antimicrobial resistance in bacteria. The objective of this study was to examine the prevalence of integrons in poultry processing at the broiler house and in processing plants. Class 1 and class 2 integrons were found throughout the processing environment. Of…

A device for in-situ fan airflow measurement, known as the Fan Assessment Numeration System (FANS) device, previously developed and constructed at the USDA-ARS Southern Poultry Research Laboratory, was refined at University of Kentucky as part of a project for quantifying building emissions from mechanically ventilated poultry and livestock…

The species population of enterococci isolated from four poultry houses for six grow-outs on one farm was determined. Two houses on the farm were control houses and did not use any antimicrobials, while two other houses on the farm used flavomycin, virginiamycin, and bacitracin during different poultry grow-outs. Litter, chick boxliners, feed, and…

Physiological and behavioral responses to transportation stress were examined in a chicken strain selected for high group productivity and survivability (HGPS) resulting from reduced cannibalism and flightiness in colony cages and in chickens from Dekalb XL (DXL) commercial strain. At 13 wk of age, 96 pullets per strain were randomly assigned to…

Poultry houses and fixtures are among the first considerations of a person about to begin breeding poultry. If the buildings are commenced in a haphazard kind of a way disappointments and loss of time are bound to ensue. It will, therefore, be the endeavor in this book to assist the breeder in avoiding the difficulties which arise with a first…

Bantam chickens have a strong appeal to grown people and to children alike. Interest in them is widespread. They are bred extensively for exhibition and are kept also as pets and as utility fowl. The standard breeds and varieties of bantams include such a wide range of shape, color, and other characteristics that any individual taste can be suited…

The ornamental breeds and varieties of chickens often have an unusual appeal, and a breeder who may be first attracted to such fowls by their unusual plumage or form may later develop a flock which has decided utility value. Thus the keeping of ornamental breeds and varieties of chickens contributes to pleasure and the possibility of ample reward…

THE BREEDS of chickens included in the Asiatic, English, and French classes are in the main of a relatively large size, and have been developed primarily as meat breeds. They are not so commonly kept in this country as either the general-purpose or the egg breeds. The best-known meat breeds in the United States are those of the Asiatic class.…

IMPORTANCE OF EGG PRODUCTION.

EGG production doubtless is the leading branch of poultry keeping, and, in addition, is a very important agricultural activity. According to the last census the eggs produced in the United States in 1909 numbered more than 1,591,000,000 dozens, with a value of more than $306,000,000. Eggs, of course, are produced…

The American class includes the Plymouth Rock, Wyandotte, Java, Dominique, Rhode Island Red, and Buckeye.

The fowls of these breeds are commonly called general- purpose fowls, because they are not only good egg producers but their carcasses are also well suited for the table. They are therefore the breeds best suited for the general farm flock,…

The home chicken flock usually is kept for egg production. It should provide fresh eggs during most of the year.

Before you decide to start a laying flock, you should find out about the zoning ordinances in your area ; if you live in a large city or a suburb, they may forbid poultry keeping.

Breed utilization, genetic improvement, and industry consolidation are predicted to have major impacts on the genetic composition of commercial chickens. Consequently, the question arises as to whether sufficient genetic diversity remains within industry stocks to address future needs. With the chicken genome sequence and more than 2.8 million…

The effects of 2 levels of supplemental dietary poultry fat (PF) and the combination of PF, phytase (PHY), and 25-hydroxycholecalciferol (D(3)) on the performance of commercial layers inoculated with F-strain Mycoplasma gallisepticum (FMG) were investigated in 2 trials. Sham and FMG inoculations were administered at 12 (before lay) and 22 (early in…

Seven separate experiments were conducted with Hy-Line W-36 hens to determine the ideal ratio of Arg, Ile, Met, Met+Cys, Thr, Trp, and Val relative to Lys for maximal egg mass. The experiments were conducted simultaneously and were each designed as a randomized complete block design with 60 experimental units (each consisting of 1 cage with 2 hens)…

Laying hens are typically induced to molt to begin a new egg-laying cycle by withdrawing feed for up to 12 to 14 d. Fasted hens are more susceptible to colonization and tissue invasion by Salmonella enterica serovar Enteritidis. Much of this increased incidence in fasted hens is thought to be due to changes in the native intestinal microflora. An…

Reducing Salmonella in poultry has been a paramount goal of the poultry industry in order to improve food safety. Inclusion of high-fiber fermentable feedstuffs in chicken diets has been shown to reduce the incidence of Salmonella colonization in laying hens, but no work has been performed in growing birds. Therefore, the present study was…

The objective of the study was to determine whether supplementing the diets of post-molted hens with organic selenium (Se) (Sel-Plex®) and/or organic Zinc (Zn) (Bio-Plex®)1 could improve laying hen performance. Prior to molting, 120-78 wk old laying hens were separated into four treatment groups of 30 hens per treatment and were subjected to…

The exercise of market power by broiler processing firms (integrators) is plausible because local markets for growers are concentrated and because growers face hold-up risks arising from substantial investments in specific assets set against limited integrator purchase commitments. This article explores the links between local integrator…

Background: Lighting is used during conventional broiler grow-out to modify bird behaviour to reach the goals of production and improve bird welfare. The protocols for lighting intensity vary. In a field study, we evaluated if the lighting practices impact the burden of Salmonella in broiler flocks. Methods: Conventional grow-out flocks reared in…

In the US farmers often market pastured poultry eggs for a premium price, claiming animal and human health benefits. We examined how moving pastured hens to forage legumes or mixed grasses influenced hen (Gallus gallus L.) egg omega-3 fatty acids and concentrations of vitamins A and E. We also compared the eggs of the pastured hens to those of hens…