Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!
Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: rearing system

Sortuj według:

Ogranicz wyniki do:

Do the nutrient compositions and mineral matter contents of meagre (Argyrosomus regius) vary depending on the rearing environment?

Hamzaçebi Sevim, Öztürk Fatma

Oceanological and Hydrobiological Studies

2024

Vol. 53, No. 1

1--6

This study aimed to compare the nutrient compositions and element contents of meagre (Argyrosomus regius) reared in different environments. The biochemical analyses revealed that the ash contents of cage and earth pond-cultured fish were higher than that of wild fish (p < 0.05), while there were also significant differences in the protein, fat and moisture contents (p > 0.05). The cage-reared fish had the lowest Ca, Mg, P and S levels, while the highest levels were determined in wild fish. The highest Fe, Se and Mn levels were determined in the earth pond-reared fish. Wild fish had the lowest Fe, Zn, Se and Cr levels, while the lowest Cu and Mn levels were determined in the cage-reared fish. The cage-reared fish had the highest Zn, Cr and Ni levels. Wild fish were determined to contain high levels of As, Hg and Pb. The earth pond-reared fish had a high Cd level, while having lower As and Hg levels than those of fish reared in other environments. As a result, farmed meagre are thought to be affected by the metal content in both the feed and the water. The results of the study showed that the content of the meagre flesh varied depending on the rearing conditions.

Impact of rearing system of Rosa breed laying hens on occurrence and antibiotic resistance of Salmonella spp. isolated from egg shell surface

Galbas M., Selwet M., Koczorowski M., Porzucek F.

Biotechnology and Food Science

2015

Vol. 79, nr 2

3--8

Salmonelloses are among the most common animal-borne infections. The most frequent causes of their occurrence are contaminated chicken eggs. For this reason, the control of bacteria from the Salmonella genus living in the cloaca of laying hens can contribute to the reduction of spreading levels of infections with these bacteria. The most popular methods of rearing laying hens in small agricultural farms comprise run and cage keeping. The aim of the performed studies was to determine the impact of rearing and nutritional systems on the occurrence of egg infections with Salmonella spp. bacteria. Detection by PCR method corroborated presence of bacteria from the Salmonella genus on eggs surface from hens kept in litter system. Latex serotyping test confirmed the presence of Salmonella Enteritidis. Salmonella spp. was not detected on eggs surface from hens kept in cage system. Salmonella spp. isolates from the eggs surface of hens reared on litter were characterized by drug resistance to tetracycline. Addition of EM probiotic failed to show reduction in incidence of Salmonella spp. infection.