Kaloyanov

D. Veljanov, Iv. Kaloyanov, P. Kosturkova

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[Article in Bulgarian, Summary in English, 3 tables, 21 ref.]
(Article in Bulgarian, Summary in English, 3 tables, 11 ref.)

D. Veljanov, Iv. Kaloyanov, P. Kosturkova.

Studies on the Dynamics of Multiplication and Virulence of Salmonella typhi murium Cultured in the in the presence of Sideramine.

Zentralblatt f. Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung Originale I. Reihe A: Medizinische Mikrobiologie und Parasitologie. 1973; Abt.Orig., A 223(2):205-210.

- Същата в Известия на Микробиологичния институт на БАН, 24, 1974, 155-161

Ив. Калоянов, Л. Георгиев. Kaloyanov, Iv., L,.Georgiev.

Микробиологични проучвания върху щамове от Грам-отрицателни бактерии, изолирани от птицекланици.

Studies on Gram-negative Bacteria, isolated from butchered Poultry.(Article in Bulgarian, Summary in English, 3 tables, 21 ref.)

ІІІ конгрес на микробиолозите в България, 19-22.ХІ, 1973, Изд. БАН, 153-156
Third Congress of Microbiology, 1973, Sofia, 1974, BAN, 153-156
С.Л. Адинараяная, Ив. Калоянов

Изолиране и диференциране на бактерии от семейство Enterobacteriaceae, изо-лирани от трупове на заклани едри преживни животни.

[Article in Bulgarian, Summary in English, 3 tables, 21 ref.]

Четвърти конгрес по микробиология, 22-24.ХІ, 1977, София, 1978, Трета част, 421-424
Toschkoff, Al., As. Toshkov, D.Veljanov, Iv.Kaloyanov.

Virulence of Bacteria.

Monography. Bulgarian Academie of Sciences, Sofia 1978 (In Bulgarian, Summary in English and Russian/

Kaloyanov, Iv, Gogov, Y.

Проучвания върху колиформните бактерии в сурово и пастьоризирано мляко (On the Coliforms in raw and pasteurized Milk) (Article in Bulgarian, Summary in English, 3 tables, 21 ref.)

Veterinarnomeditsinski Nauki, Sofia (Bulgaria); Veterinary Science, Sofia, 1977, 14(10) 46-52.
Studied were 360 samples of raw and 1404 samples of pasteurized milk, collected from three milk centers, for the presence of coliform bacteria. It was found that the coli titer of the raw milk varied from 10(-5) up to 10(-7), depending on the season. The regimes of pasteurization applied kill 100 per cent of the present coli organisms. After the thermic treatment the milk was additionally contaminated with coli forms from the containers and the equipment in dependence on the conditions of washing and disinfection. The coli titer of the pasteurized milk varied from 1 to 10(-3). A total of 602 strains of coliform bacteria were isolated from the pasteurized and the raw milk; the bacteria were differentiated by the scheme of Kauffmann. Most commonly encountered were the coli forms of the following genera:Citrobacter (35 per cent), Enterobacter (29.8 per cent), Klebsiella (23.9 per cent), and Escherichia (11.3 per cent). The following species were prevailing in raw milk: Kl. aerogenes, Ent. aerogenes, Ent. cloacae, C. freundi, and C. intermedium. In pasteurized milk dominating were Kl. aerogenes, C. freundi. Ent. aerogenes, and Ent. cloacae.
Georgiev, L., Zachariev, Ts., Kaloyanov, Iv.

Влияние на ниските температураи върху броя и вирулентността на салмонелни бактерии в заклани птици.

(Effect of low temperatures on the Count and Virulence of Salmonellae in slaughtered Poultry).

(Article in Bulgarian, Summary in English, 3 tables, 11 ref.)

Veterinarnomeditsinski Nauki, Sofia (Bulgaria); Veterinary Science, 1978;15(1) 49-56
Studied was the effect of shock freezing at -34 degrees C and the storing of slaughtered birds at -18 degrees C up to six months on the survival and the change in the virulence of Salmonella typhimurium, S. meleagridis, and S. gallinarum-pullorum. It was established that the number of the tested Salmonella species decreased steadily, however, no complete devitalizing was attained. The Salmonella count was most intensely reduced in the first fifteen days of storing. Most resistant to the effect of low temperature were S. typhimurium organisms, and least resistant was S. meleagridis. It was found that the virulence of the tested Salmonella strains gradually dropped, the amount of disappearing organisms correlating with the drop of their virulence.
Gogov, I., Kaloyanov, Iv.

Наличие на E. сoli бактерии в сурово и пастьоризирано мляко.

(Presence of E. coli bacteria in raw and pasteurized cow's milk).

[Article in Bulgarian, Summary in English, 3 tables, 21 ref.]

Veterinarnomeditsinski Nauki, Sofia (Bulgaria);Veterinary Science, 1978;15(8):82-86.
Investigated for the presence of E. coli-bacteria belonging to the O-groups of dispeptic strains, are 85 samples of raw and 212 pasteurized milk, taken from subsequent departments of the milk-producing industry. Dispeptic E. coli are detected in 11.76 per cent of the samples of raw milk studied, and in 5.18 per cent in those of the pasteurized milk. No coli forms are established in samples, taken directly from the pasteurizing equipment. The secondary infection with E. coli results from the use of vessels and equipment in the course of the technological process. E. coli-bacteria, belonging to the O-groups of dispeptic strains, are demonstrated in samples both with the aid of a coli-titre, in conformity with standard requirements, and in samples that are not standard, according to this indice. The 21 strains of E. coli-bacteria isolated are referred to the following O-groups: 06, 025, 026, 055, 078, 086, 0111, 0119, 0124, 0125 and 0127. Some of the strains isolated manifest an atypical behaviour to lactose and sucrose in comparison with the properties, indicated in the scheme by Kauffmann.
Adianarayanaiah, C.L., Iv. Kaloyanov.

Distribution and species of Enterobacteriaceae family bacteria on different parts of the carcasses of slaughtered large ruminants. (Artivle in Bulgarian, summary in English).

Mesopromishlenost Bulletin, Sofia, 11, № 1, 1978, 7-12

Ionova, I., Monov, G., Dzhurov, A., Kaloyanov, Iv., Petkov, R.

Качество на месото от агнета, изхранване с фуражни смески с добавка на бактериален протеин.

(The quality of Meat of Lambs fattened with feed mixtures containing a suplement of Bbacterial Protein).

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