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1.
Nir Melnikov Yehuda Kamari Michal Kandel-Kfir Iris Barshack Ami Ben-Amotz Dror Harats Aviv Shaish Ayelet Harari 《Marine drugs》2022,20(7)
Vitamin A and provitamin A carotenoids are involved in the regulation of adipose tissue metabolism and inflammation. We examined the effect of dietary supplementation using all-trans and 9-cis β-carotene-rich Dunaliella bardawil alga as the sole source of vitamin A on obesity-associated comorbidities and adipose tissue dysfunction in a diet-induced obesity mouse model. Three-week-old male mice (C57BL/6) were randomly allocated into two groups and fed a high-fat, vitamin A-deficient diet supplemented with either vitamin A (HFD) or β-carotene (BC) (HFD-BC). Vitamin A levels in the liver, WATs, and BAT of the HFD-BC group were 1.5–2.4-fold higher than of the HFD group. BC concentrations were 5–6-fold greater in BAT compared to WAT in the HFD-BC group. The eWAT mRNA levels of the Mcp-1 and Cd68 were 1.6- and 2.1-fold lower, respectively, and the plasma cholesterol and triglyceride concentrations were 30% and 28% lower in the HFD-BC group compared with the HFD group. Dietary BC can be the exclusive vitamin A source in mice fed a high-fat diet, as shown by the vitamin A concentration in the plasma and tissues. Feeding BC rather than vitamin A reduces adipose tissue macrophage recruitment markers and plasma lipid concentrations. 相似文献
2.
Shiferaw Jenbreie Gelagay Ayelet Esayas Gelaye Fekadu Kebede Stacey E. Lynch Haileleul Negussie 《Tropical animal health and production》2012,45(1):75-79
The study was conducted in eight districts of Ethiopia with the objectives of determining the seroprevalence and associated risk factors of infectious bursal disease (IBD). From the total of 2,597 chicken serum samples examined using ELISA, 83.1 % were found positive. The highest seroprevalence was found at Mekele (90.3 %) while the lowest was recorded at Gondar district (69.8 %). These differences among the study areas were statistically significant (p?<?0.05). Highest seroprevalence was found in crossbreed of chicken (91.4 %) while the lowest was recorded in indigenous breed of chicken (81.4 %). This difference was statistically significant (p?<?0.05) among the three breeds of chickens, but sex was not statistically significant (p?>?0.05). The seroprevalence of the disease was found high in young (≤8 weeks) age group (86.6 %) while the lowest prevalence was recorded in adults (>8 weeks) (72 %). This is also statistically significant (p?<?0.05) between young and adult age groups. The prevalence of IBD in different production system indicated that higher seroprevalence was recorded in intensive production system (85.9 %) while the lowest was recorded in extensive production system (81.6 %). This difference is also statistically significant (p?<?0.05). 相似文献
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Yoseph Legesse Yilkal Asfaw Mesfin Sahle Gelagay Ayelet Shiferaw Jenberie Haileleul Negussie 《Tropical animal health and production》2013,45(5):1265-1267
The study was conducted in three regional states of Ethiopia: Amhara, Oromia, and the Southern Nations Nationalities and people regional state from August 2007 to April 2008 with the objective of identifying the foot and mouth disease virus (FMDV) serotypes circulating in the region. Two serotypes were recorded from epithelial tissue and oesophageal–pharyngeal (OP) fluid that were taken from outbreaks in study regions of Ethiopia. Serotype O FMDV was identified in Girar Jarso, Yabello, and Ankesha Guagusa districts while SAT-1 was isolated in Surma and Maji districts from tissue samples and this was the first report of the FMDV serotype in Ethiopia. Similarly, the OP fluid samples were found positive for SAT-1 FMDV in Maji and Surma districts. 相似文献
5.
Jenberie S Awol N Ayelet G Gelaye E Negussie H Abie G 《Tropical animal health and production》2012,44(4):849-854
This study was carried out with the aim of identifying types of gross and histopathological lesions in lungs of camels slaughtered
between October 2009 and April 2010 at Addis Ababa abattoir enterprise, Ethiopia. All camels were originated from Borana and
Kereyu areas. A total of 387 slaughtered camel lungs were inspected during the study period. Of which, one or more gross lesions
were encountered on 300 lungs. Lesions were further subjected for detail gross and histopathological examinations. The occurrence
of pulmonary lesions was 77.5%. The gross and histopathological examination of these lesions had revealed 60.2% emphysema,
21.2% hydatidosis, 18.6% pneumonia, 10.6% atelectasis, 4.9% aspiration of blood, 3.9% pneumoconiosis, 2.6% pulmonary edema
and congestion, 1.6% abscess, 1% pleurisy, and 0.8% granulomatous pneumonia. Most camels had one or more pulmonary lesions
on postmortem examination, but they were apparently healthy during antemortem inspection. Therefore, the prevailing stressful
environmental condition coupled with the existing poor level of veterinary service in camel-rearing areas of the country might
reverse these hidden inactive lesions and thereby contributed for the higher occurrence of respiratory diseases in camels. 相似文献
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Bayissa B Ayelet G Kyule M Jibril Y Gelaye E 《Tropical animal health and production》2011,43(4):759-766
Cross-sectional serological study and questionnaire survey were conducted in Borana pastoral and agro-pastoral area to determine
seroprevalence and risk factors associated with foot-and-mouth disease (FMD) infection and to assess community perceptions
as to importance of the disease. A multistage random sampling was carried out to select cattle for seroprevalence and households
for interviews. Totally, 768 sera were collected from 111 herds. The overall individual level seroprevalence of 23.0% (n = 177) and herd level seroprevalence of 58.6% (n = 65) were recorded using 3ABC ELISA test. The variation of individual level seroprevalence in districts were statistically
significant (P < 0.05) which was 29.9% in Arero, 24.0% in Yabello, and 15.7% in Teltele. From multivariate logistic regression analysis,
herd size and age were seen to be significantly (P < 0.05) associated with FMD seroprevalence. The result of the questionnaire survey based on 120 respondents indicated that,
the daily milk yield of cows infected with FMD during outbreaks is reduced to an average of 0.5 L for 25.5 days while cows
developing heat-intolerance syndrome after acute infection gave an average 0.67 L for 3.8 months and their calving interval
prolonged about 12 months. The questionnaire survey in agro-pastoral area of Borena also indicated that FMD-infected oxen
remained off-plough for one season when outbreaks occur in cropping time, whereas heat-intolerant oxen were no longer used
for traction. These findings of the present study indicated that FMD is a highly prevalent and economically important disease
in the Borana pastoral and agro-pastoral production systems which need effective control strategy for the disease. 相似文献
8.
Negusssie Haileleul Kyule Moses N. Yami Martha Ayelet Gelagay Jenberie T Shiferaw 《Tropical animal health and production》2011,43(1):235-243
The study was conducted in three regional states of Ethiopia: Amhara, Oromia, and Addis Ababa from August 2008 to April 2009
with the objectives of identifying the genetic diversity of serotypes and topotypes in Ethiopia, and determining the attack
rate and associations of potential risk factors with foot-and-mouth disease (FMD) seropositivity. A total of 496 cattle were
clinically and serologically examined for presence of specific lesions and nonstructural protein for FMD, respectively. Of
which, 140 (28.2%) manifested clinical signs and lesions suggestive of FMD, and 219 (44.2%) were seropositive. From a total
of 7,781 animals observed and recorded on a designed format in six districts, 1,409 (19.6%) were infected, and 15 (0.12%)
died during outbreaks of FMD. Epidemiological investigations revealed that the morbidity rate of the disease was 21.1% in
Akaki-kality sub-city, but the mortality rate was <2% in all districts. Furthermore, the mortality and case fatality rates
were relatively higher, 1.6% and 8.9% in calves than the other age groups, respectively. From a total of 33 bovine epithelial
tissue-cultured samples, 19 (57.6%) showed CPE for FMD virus, in which 16 samples had serotype O and EA-3 topotype, while
three samples had found serotype A, Africa topotype, and G-VII strain. Various strains of FMD viruses were isolated in Ethiopia
in this study, and therefore, further detailed studies on the evaluation of available vaccines and the development of a vaccine
which contains cocktails of antigens of FMD virus strains in the country should be encouraged. 相似文献
9.
Growth of caladium (Caladium × hortulanum) plants was followed during ca. 7 months under prevailing summer conditions in Israel. Weight of daughter tubers increased exponentially with time. Growth ceased when mean night temperatures fell below 12°C in mid-November. Caladium is a plant which is sensitive to low temperatures, and when tubers were stored at temperatures below 20°C, subsequent sprouting rate was slowed. Storing tubers at 2°C for longer than 7 days reduced yield of daughter tubers, but shorter storage resulted in an improved crop. This was apparently a result of selective damage to the central bud, removing its apical dominance and releasing lateral buds from inhibition.Although chilling damage was evident when growth was considered, none of the accepted physiological processes normally associated with chilling injury, including electrolyte leakage, ethylene and CO2 production, was correlated with it in caladium. 相似文献
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A study on seroprevalence of caprine brucellosis under three livestock production systems in southern and central Ethiopia 总被引:1,自引:1,他引:0