Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 13

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
PL
Oznaczono metodą ASA zawartość rtęci, ołowiu, kadmu, miedzi, cynku i manganu w mięśniach ryb odłowionych w 2002r. w Wiśle w okolicach Włocławka. Nadmierną zawartość ołowiu stwierdzono w dwóch próbkach ryb.
EN
The mercury, lead, cadmium, copper, zinc and manganese content in fish meat caught in Wistula River near Włocławek m 2002 were determined by ASA method. Exceeded amount of lead was found in two samples.
PL
Celem pracy było określenie wpływu zastosowania preparatu prebiotycznego zawierającego mannanoligosacharydy, w mieszankach dla kurcząt brojlerów, na status zdrowotny i jakość mięsa. W mieszankach paszowych w miejsce stymulatora roślinnego i zakwaszacza (grupa kontrolna) zastosowany został preparat prebiotyczny Biolex MB 40 (mannanoligosacharydy) w ilości 2 kg/t mieszanki (grupa II). W grupie doświadczalnej III zastosowano preparat Biolex MB 40 w ilości 2 kg/t i zakwaszacz. W 21 dniu życia od kurcząt pobierano krew i następnie oznaczano w surowicy zawartość białka ogólnego, γ-globulin, lizozymu oraz ceruloplazminy. Po uboju w mięśniu piersiowym oznaczono skład chemiczny mięsa. Zastosowanie w mieszankach dla kurcząt brojlerów preparatu prebiotycznego Biolex MB 40 w ilości 2 kg/t wpływa na poprawę wyników produkcyjnych wyrażonych masą ciała, wykorzystaniem paszy i europejskim wskaźnikiem wydajności. U kurcząt żywionych mieszankami z udziałem badanego preparatu zaobserwowano aktywowanie mechanizmów obrony nieswoistej na zakażenia, czego wyrazem był wzrost poziomu lizozymu w surowicy krwi. Mięso badanych kurcząt charakteryzowało się podobną zawartością suchej masy, popiołu surowego, białka ogólnego i tłuszczu surowego.
EN
This aim of this study was to determine the effect of the application of a prebiotic preparation containing mannanoligosaccharides, in diets for broiler chickens on health status and meat quality. In the diets for broiler chickens an acidifier and a herbal preparation (control group) were replaced with a prebiotic preparation Biolex MB 40 (mannanoligosaccharides) at 2 kg/t of the diet (group II). In group III, Biolex MB 40 was applied at 2 kg/t and an acidifier. At 21 days of age, blood samples from birds were drawn. The following were determined in the serum: total protein level, γ-globulins, lysozyme and ceruloplasmin. After slaughter chemical analysis of breast muscles was carried out. The application of a prebiotic preparation Biolex MB 40 at 2 kg/t positively affects the production results, expressed as body weight, feed utilization and the European Efficiency Index. The mechanisms of non-specific defence against infections were observed to activate in the chickens fed on the diets with the examined preparation, which was expressed as an increase in lysozyme level in blood serum. The meat of the examined chickens contained similar amounts of dry matter, crude ash, crude protein and crude fat.
EN
The in vitro effects of iridovirus isolated from catfish on head kidney lymphocyte activity were examined in carp, rainbow trout and sheatfish. Mitogenic proliferative assay was used to demonstrate an immunosuppressive effect of iridovirus on the proliferative response of head kidney lymphocytes stimulated by ConA and LPS. The production of IL-2-like protein by head kidney lymphocytes stimulated by ConA or iridovirus-like agent was also examined in three species of fish. The preliminary in vitro study demonstrated an inhibitory effect of the iridovirus on the proliferative response of head kidney lymphocytes and on the IL-2-like protein production in carp, rainbow trout and sheatfish, but the highest suppressive effect was observed on sheatfish cells. The results suggested that the early-induced iridovirus pathogenicity is the inhibition of the proliferative response and cytokines production by lymphocytes.
EN
The aim of this study has been to determine the effect of a diet containing β-carotene and omega-3 fatty acids on the biochemical and nonspecific humoral immunity indicators and on the results of rearing calves to day 60 of life. The study was conducted in 2011-2012, on a herd of Polish Holstein-Friesian cows. 54 calves from the herd were divided into 3 groups, 18 animals in each: CTR, TRT1 and TRT2. During the colostral period lasting for 5 days after birth, calves were drinking the mother’s colostrum. From 6 to 60 days, calves were watered milk replacer formulation. The control group (CTR) consisted of calves after the colostral period given milk replacer formulation without any supplementation. In the two other groups, calves received milk replacers with the supplementation of b-carotene (TRT1 group) in the amount of 25 mg/calf/day or a suspension of liver omega-3 oil (TRT2 group) in the amount of 5g/calf/day. All calves received solid feed ad libitum. The research showed that the parameters of the metabolic profile of calves (ALT, ASP, CHOL, GLU, UREA, ALP, TG, CRE) were within the normal range, indicating good health of the calves. Moreover, the supplementation had a positive impact on the chosen immunological parameters, including a higher IgG concentration, especially at the end of the milk drinking period. The result of B-carotene in a diet was the highest daily gain in the period from 30 to 60 days of life among the analysed groups of calves. No such effect was achieved in the TRT2 group of calves, as their body weight was the lowest. However, noteworthy is the beneficial impact of beta-carotene and omega-3 oil on the non-specific humoral immunity parameters, which was manifested by fewer cases of clinical diarrhoea and upper respiratory tract diseases.
12
Content available remote Endotoxemia in newborn rats attenuates acute pancreatitis at adult age
41%
EN
Bacterial endotoxin (lipopolysaccharide, LPS), at high concentration is responsible for sepsis, and neonatal mortality, however low concentration of LPS protected the pancreas against acute damage. The aim of this study was to investigate the effect of exposition of suckling rats to LPS on the course of acute pancreatitis at adult age. Suckling rat (30-40g) received intraperitoneal (i.p.) injection of saline (control) or LPS from Escherichia coli or Salmonella typhi (5, 10 or 15 mg/kg-day ) during 5 consecutive days. Two months later these rats have been subjected to i.p. caerulein infusion (25 µg/kg) to produce caerulein-induced pancreatitis (CIP). The following parameters were tested: pancreatic weight and morphology, plasma amylase and lipase activities, interleukin 1ß (IL-1 ß), interleukin 6 (IL-6), and interleukin 10 (IL-10) plasma concentrations. Pancreatic concentration of superoxide dysmutase (SOD) and lipid peroxidation products; malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE) have been also measured. Caerulein infusion produced CIP in all animals tested, that was confirmed by histological examination. In the rats, which have been subjected in the neonatal period of life to LPS at doses 10 or 15 mg/kg-day x 5 days, all manifestations of CIP have been reduced. In these animals acute inflammatory infiltration of pancreatic tissue and pancreatic cell vacuolization have been significantly diminished. Also pancreatic weight, plasma lipase and a-amylase activities, as well as plasma concentrations of IL-1ß and IL-6 have been markedly decreased, whereas plasma anti-inflammatory IL-10 concentration was significantly increased in these animals as compared to the control rats, subjected in the infancy to saline injection instead of LPS. Caerulein-induced fall in pancreatic SOD concentration was reversed and accompanied by significant reduction of MDA + 4 HNE in the pancreatic tissue. The effects of LPS derived from E.coli or S.typhi were similar. Pretreatment of suckling rats with LPS at dose of 10 mg/kg-day x 5 days resulted in the most prominent attenuation of acute pancreatitis at adult age, whereas LPS at dose of 5 mg/kg-day x 5 days given to the neonatal rats failed to affect significantly acute pancreatitis induced in these animals 2 months later. We conclude that: 1/ Prolonged expositon of suckling rats to bacterial endotoxin attenuated acute pancreatitis induced in these animals at adult age. 2/ This effect could be related to the increased concentration of antioxidative enzyme SOD in the pancreatic tissue and to the modulation of cytokines production in these animals.
13
Content available Retroviruses of wild and cultured fish
26%
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.