The dynamic of antibiotic resistance in commensal Escherichia coli throughout the growing period in broiler chickens: fast-growing vs. slow-growing breeds
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چکیده
منابع مشابه
Antibiotic Resistance in Diarrheagenic Escherichia coli Isolated from Broiler Chickens in Pakistan
Background: Diarrheagenic Escherichia coli (DEC) strains are predominant cause of gastrointestinal tract illnesses. The main objective of the study was to determine antibiotic resistance in various types of DEC isolated from chicken broilers farmed in Pakistan. Methods: A total of 200 feces and 200 meat samples from broiler chickens were collected from the slaughtering shops in Southern Punjab...
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at the donor site, which may be responsible for the Koebner phenomenon . Many questions arise out of this observation. Is the degree of trauma important in precipitating the phenomenon? Is the activity lesion specific or generalized? What are the factors responsible for the survival of transplanted melanocytes? Are these patients vulnerable to recurrence or loss of pigment in the lesions treate...
متن کاملActivity of Selected Blood Serum Enzymes in Growing Broiler Chickens
The objective of this study was to determine the effect of age on the response of enzyme activities in blood serum of growing broiler chickens. The research was conducted on Ross 308 chickens. Blood serum samples were collected three times at 14, 21 and 42 days of age. Significant effects of age were found for both aspartate aminotransferase (AST) and lactate dehydrogenase (LDH).There were no s...
متن کاملProtein requirements of growing indigenous chickens during the 14 - 21 weeks growing period
A study was conducted to investigate the growth response of growing indigenous chickens between 14 and 21 weeks of age to diet protein level. The chickens were offered diets ad libitum with 100, 120, 140, 160 and 180 g crude protein (CP)/kg diet. Body weight and feed intake of the birds were recorded weekly. Feed intake and weight gain increased significantly between the 100 and 160 g CP/kg die...
متن کاملthe washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests
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ژورنال
عنوان ژورنال: Poultry Science
سال: 2020
ISSN: 0032-5791
DOI: 10.1016/j.psj.2019.10.080