Types Of Poultry Research Articles

Conversion of the energy of the food into edible energy by two types of table poultry.

Conversion of the energy of the food into edible energy by two types of table poultry.

The Microscopic Lesions of Acute Fowl Cholera in Mature Chickens

Fowl cholera, a contagious bacterial disease caused by Pasteurella multocida, occurs in all types of poultry and is widespread. In chickens the disease is often acute, and affected birds may be found dead with no premonitory signs of infection. Descriptions are readily available of the gross lesions of fowl cholera in ohickens, but information on microscopic changes is relatively scant. Apparently the only descriptions available are reports, of somewhat limited scope, by Barboni and Tolomei (3), Barboni and Arangio (2), and Kaupp (6). This study was undertaken to determine the microscopic lesions of acute fowl cholera, and the cause of death in terms of the type of cellular response observed.

Vitamin Supplements and Squab Production

INTRODUCTIONTHE ration used almost exclusively in the commercial squab industry consists of whole grains and peas plus a grit and mineral mixture. Although such rations allow fairly good reproduction, they are not well supplied with certain vitamins that are known to be important for reproduction in the fowl. Many ingredients have been added to the grit and mineral mixture, most of which are of dubious value as indicated by the limited experiment of Platt (1951). However, no reports on the value in squab production of nutrients commonly considered important for other types of poultry have appeared in the literature. EXPERIMENTALThree strains of commercial White King pigeons differing in age and production characteristics were used. Strain A consisted of old birds producing large squabs at a relatively low rate. Strain B consisted of young birds which had come into production two months prior to the start of the feeding …

A Determination of Hole Sizes Which Exclude Certain Predatory Mammals

On several occasions the authors have been called upon to give information to poultry raisers relative to fencing material which will give protection against various kinds of predatory mammals. One type of poultry rearing, the rangeshelter method, is particularly vulnerable to the depredations of carnivorous mammals including domestic cats and dogs. Under this kind of management large numbers of chickens are placed on open pasture range and supplied at intervals over the area with roosting shelters consisting of a metal roof and sides usually of woven wire. When the fowls enter these shelters at dusk, an attendant fastens a door to secure them, and releases them early in the morning. Thus the birds are generally safe from night predators although the degree of safety may depend upon numerous environmental conditions such as location of the range relative to cover, dens, etc.; strength of the wire and size of mesh; predator density; and vigilance of the attendant. Of all these, perhaps the one condition easiest to control, and when controlled will provide greatest safety, is the sound construction of shelters. To construct a predator-proof shelter with sides and bottom of wire requires some knowledge of the kind of material that will exclude possible raiders. The repellent qualities of the wire must be known in terms of wire size as well as

Antibiotics and the Growth of Goslings

Numerous investigators have shown that the inclusion of antibiotics such as aureomycin, bacitracin, penicillin, streptomycin and terramycin, in the ration of young chicks or turkey poults, usually results in increased growth and feed efficiency. Experiments with other types of poultry are limited. Heuser (1951) stated that “limited trials with pheasants showed a larger increase in weight than chickens while ducks showed a smaller gain in weight” as a result of antibiotic feeding. No supporting data were given. On the other hand, Branion and Anderson (1952) and Branion, Anderson and Hill (1952) were unable to show any increased growth in ducks as a result of feeding from 10–100 parts per million of various antibiotics.Slinger et al. (1952) and Slinger (1952) found that goslings fed pellets or pellets and grain showed a good growth response to penicillin in the early period of life. However those fed pellets plus an ad .

Comparative Gonadotropic Potency of Unfractioned Extracts of Poultry Pituitaries

ONLY a meager amount of research work has been done that was concerned with the gonadotropic potency of the pituitary glands obtained from the domestic fowl. Witschi, Stanley, and Riley (1937) have assayed turkey hypophyses, and Domm (1931), Leonard (1938), Jaap (1935), Stein (1934), and Meyer, Mellish, and Kupperman (1939) have made gonadotropic assays of various classes of chickens. Unfortunately there was a wide variation in the assay technics used by these workers so it is difficult to make a concise comparison of the experimental results.This study was undertaken to determine the gonadotropic potency of pituitary glands taken from all types of domestic poultry using the same standard assay technic and to determine the influence of sex, age, and different stages of reproduction on this potency. Since it is possible to remove the pituitary gland from a freshly killed bird without blemishing the external appearance of the carcass, there .