Dietary stinging nettle () improves carotenoids content in laying hen egg yolk.

1. This study assessed the addition of dried stinging nettle (SN) leaves at 0%, 2.5% and 5.

Investigations into the chemical composition and nutritional value of different batches of rapeseed meals for turkey poults.

A study was conducted to investigate the chemical composition and feeding value of rapeseed meal (RSM) batches produced at the same plant when fed to turkey poults. In total, seven RSM samples were obtained from a single manufacturer within a period of 90 days. Although the manufacturer followed the same procedures during oil extraction and RSM production, different batches of rapeseed were used.

Stevia () Improves Carotenoid Content in Eggs When Fed to Laying Hens.

Stevia rebaudiana Bertoni is a shrub with leaves that have a high concentration of carotenoids such as lutein and zeaxanthin. Egg yolks are a bioavailable source of lutein and zeaxanthin. The consumption of these carotenoids has been linked with improved human health.

Feeding dry stevia leaf (Stevia rebaudiana) or xylanase improves the hepatic antioxidative status of broiler chickens.

Four diets, formulated with and without stevia and with and without exogenous xylanase, following a 2 × 2 factorial design, were prepared. Each diet was fed ad libitum to birds in eight pens (three birds in each pen) in a randomised block design. It was found that birds fed xylanase grew faster, used the feed more efficiently and had an increased concentration of hepatic α-tocopherol and vitamin E concentrations (P < 0.

[Leukemia in sheep on a state farm].

Leukosis was diagnosed in a flock of sheep. It was studied epizootiologically, clinically, morphologically, virologically, and serologically in the course of two years. Fifteen sheep manifested clinical symptoms of the disease.

[Viral carrier state and viral excretion in classical swine fever].

Studies on swine pest virus carrying and elimination on swine vaccinated by lapinizated vaccine strain "K" from rabbits were performed. Vaccinated swine were injected with the pathogenic virus on the 60th day post vaccination and to them were added not immunized swine with the aim to discover virus elimination. The experimental swine were decapitated on the 3, 5, 6 and 7th day post infection.

[Candida infections in farm animals and birds].

Studied were swab samples taken from the oral cavity, the nostrils, and the rectum, resp., the cloaca of a total of 2315 calves, pigs, chickens, poulets, and turkey-poults to demonstrate the presence of fungi of the genus Candida. The material was taken from healthy animals and birds as well as from such that had digestive troubles, bronchitis, and bronchopneumontia.

[Production and titration of a vaccine against the infectious encephalomyelitis of poultry].

A vaccine was produced against infectious encephalomyelitis of day-old chicks infected cerebrally with strain Calnek 1143. It is a brain suspension from killed birds that have shown disease symptoms, treated with penicillin and streptomycin and stored at -20 degrees C. Experiments were carried out to titrate the vaccine through determining the minimum infective dose for day-old chicks treated with 0.

[Diagnosis of infectious anemia in horses using the Coggins test].

Coggins' immune diffusion test was modified, and was applied as a screening one in the study of the epizootic status. The positive reactions were characterized by the production of a precipitation line between the antigen and the respective serum that was tested. The appearance of such a line was associated with that formed with the use of the positive control serum, pointing to a reaction of identity.

[Pathomorphological studies of trichocephaliasis in sheep].

The morphologic study of 22 sucking and weaned lambs (8 experimentally and 14 spontaneously infected with Trichocephalus) revealed that in its biologic development in the host Trichocephalus fixes itself firmly and penetrates deeply at its head and into the mucous membrane of the caecum and the large intestine. Besides, at these sites morphologic lesions in cases of strong infection have been established in the liver, kidneys, spleen, and lung. The desquamated epithelial cells and the erythrocytes found in the digestive canal of the parasite showed that sheep Trichocephalus sp.

[Comparative study of infectious and atypical encephalomyelitis in birds].

Studied were morphologically a total of 234 birds for infectious encephalomyelitis (IE) and atypic encephalomyelitis (AE) of which 70 were experimentally infected with standard reference strains of IE (Calnek 1143-42 birds, and Van Roeckel 28 birds), 32 were infected with a brain suspension of affected with AE birds, and 110 were spontaneously affected with AE. Those of the birds that were infected with the standard strains of IE as well as with the brain suspension exhibited changes in the central nervous system in the form of a non-suppurative encephalomyelitis, and in the viscera--lymphoidcell proliferations. These alterations proved analogous with those observed in birds spontaneously affected with AE.

[Hepatoma in artificially raised trout].

Cases were described of a hepatoma in the liver of trout, Salmo irideus, Gibb., originating from three fish-breeding farms in the district of Sofia. Histologically, three were tumor cells arranged in the form of trabeculae and paths or distributed focally.

[Study of the pathogenic qualities of 4 celo-virus strains isolated in Bulgaria].

Four CELO virus strains, isolated in this country, were used to infect 3-day-old chicks via the trachea, muscularly, orally, subcutaneously, and cerebrally. The chicks were killed on the 2nd, 4th, 6th, 9th and 16th day following inoculation. Material was taken from each chick for morphologic, virologic, and serologic examination.