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1.
Blood samples were collected every 2 h during a 24 h period from 6 cows of one herd and 10 cows of another herd. In a third herd 9 cows were sampled every 2 h from 6 a.m. to 8 p.m. Concentrations of total bile acids, acetoacetate, glucose and free fatty acids were determined in blood plasma. A marked difference in individual bile acid concentrations and patterns of diurnal variation was found. For most cows the highest bile acid values were observed between 2 and 6 a.m. (overall mean (+/- SD) at 6 a.m.: 104 +/- 84 mumol/l, range: 20-307 mumol/l). Fourteen cows with a bile acid value greater than 90 mumol/l at 6 a.m. ("high BA") were characterized as a group by showing a pronounced decrease in the mean bile acid concentration after morning feeding. In the group of 11 cows with a 6 a.m. bile acid value less than 90 mumol/l ("low BA") the time of day did not contribute significantly to the bile acid variation. For the "high BA" group a nearly synchronous variation between the mean values of the 3 feeding dependent parameters (acetoacetate, glucose and free fatty acids) and the mean values of bile acids was found. The within animal coefficients of correlation between bile acids and the feeding dependent parameters were significantly higher in the "high BA" group than in the "low BA" group. No direct connection was found between bile acid levels and the quantity of concentrates fed or the individual milk yield. 相似文献
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Ismaïl Boujenane Abdelkader Chikhi Oumaïma Lakcher Mustapha Ibnelbachyr 《Tropical animal health and production》2013,45(6):1391-1397
This study examined the viability of 4,554 D’man lambs born alive at Errachidia research station in south-eastern Morocco between 1988 and 2009. Lamb survival to 1, 10, 30 and 90 days old was 0.95, 0.93, 0.93 and 0.92, respectively. The majority of deaths (85.7 %) occurred before 10 days of age. Type and period of birth both had a significant effect on lamb survival traits, whereas age of dam and sex of lamb did not. The study revealed a curvilinear relationship between lamb’s birth weight and survival traits from birth to 90 days, with optimal birth weights for maximal perinatal and preweaning survival varying according to type of birth from 2.6 to 3.5 kg. Estimation of variance components, using an animal model including direct and maternal genetic effects, the permanent maternal environment as well as fixed effects, showed that direct and maternal heritability estimates for survival traits between birth and 90 days were mostly low and varied from 0.01 to 0.10; however, direct heritability for survival at 1 day from birth was estimated at 0.63. Genetic correlations between survival traits and birth weight were positive and low to moderate. It was concluded that survival traits of D’man lambs between birth and 90 days could be improved through selection, but genetic progress would be low. However, the high proportion of the residual variance to total variance reinforces the need to improve management and lambing conditions. 相似文献
4.
Harizia Abdelkader Benguerai Abdelkader Elouissi Abdelkader Mahi Tayeb Bonal Raul 《植物病害和植物保护杂志》2021,128(6):1547-1556
Journal of Plant Diseases and Protection - This study investigated chemical composition, repellent and biocidal activities of Salvia officinalis essential oil against Aphis fabae. In total, 19... 相似文献
5.
P. Mazliak A. Ben Abdelkader 《Plant foods for human nutrition (Dordrecht, Netherlands)》1968,16(1-4):176-196
Résumé Les principes de la séparation des lipides polaires des autres catégories lipidiques, puis de la séparation des différents lipides polaires entre eux sont rapidement passés en revue. Les principaux systèmes, récemment décrits, permettant de réaliser ces séparations sur couche mince, sur papier silicé ou en couplant un fractionnement préalable sur colonne avec une chromatographie ultérieure sur couche mince, sont présentés. Plusieurs exemples sont fournis de l'application de ces méthodes d'analyse aux lipides polaires de divers fruits, tubercules ou feuilles vertes.
Abréviations utilisées PA acide phosphatidique - PI phosphatidylinositol - PS phosphatidylsérine - PE phosphatidyléthanolamine - PG phosphatidylglycérol - PGP diphosphatidylglycérol (cardiolipine) - MGDG monogalactosyldiglycéride - DGDG digalactosyldiglycéride - LN lipides neutres 相似文献
Summary The principles of the separation of polar lipids from the other lipid categories, then the principles of the separation of the various polar lipids between them, are rapidly reviewed. The main systems, recently described, thanks to which it is possible to achieve these separations on a thin-layer, on silica paper, or by coupling a preliminary column fractionation with an ulterior thin-layer chromatography are presented. Several examples of the application of these methods of analysis to the polar lipids of various fruits, tubers, or green leaves, are given.
Zusammenfassung Die Grundsätze der Trennung der polaren Lipide von den anderen Lipiden, und der verschiedenen polaren Lipide untereinander werden kurz besprochen. Die kürzlich beschriebenen Verfahren, welche diese Trennungen auf Dünnschichten möglich machen, auf Kieselgel oder durch Kupplung mit einer vorherigen Säulen-Fraktionierung und anschließender DC werden dargestellt. Mehrere Beispiele werden bezüglich der Anwendung dieser analytischen Verfahren für polare Lipide in verschiedenen Früchten, Knollen oder grünen Blättern gegeben.
Abréviations utilisées PA acide phosphatidique - PI phosphatidylinositol - PS phosphatidylsérine - PE phosphatidyléthanolamine - PG phosphatidylglycérol - PGP diphosphatidylglycérol (cardiolipine) - MGDG monogalactosyldiglycéride - DGDG digalactosyldiglycéride - LN lipides neutres 相似文献
6.
Signe J. Plunkett D.V.M. 《Journal of Veterinary Emergency and Critical Care》2000,10(3):169-171
There is an increasing incidence of anaphylactic reactions in cats due to the administration of ophthalmic bacitracin, neomycin, polymyxin medications. Most of the reported cases have been fatal. This is the report of a cat that survived the initial episode only to develop renal failure and cardiomyopathy. This lead to euthanasia seven days later. Dr. Kathryn Meyer of the U.S. Pharmacopeia and Dr. Signe Plunkett of the Emergency Animal Clinic in Phoenix are conducting an ongoing study, and they are interested in the reports of any additional cases. 相似文献
7.
Takele Feyera Sigrid J W Skovmose Signe E Nielsen Darya Vodolazska Thomas S Bruun Peter K Theil 《Journal of animal science》2021,99(2)
This study aimed to determine the optimal supply of lactation feed during the transition period to minimize farrowing duration (FD) and maximize colostrum yield (CY) and quality with the overall aim of reducing piglet mortality. A total of 48 sows were stratified for body weight and assigned to six levels of feed supply (1.8, 2.4, 3.1, 3.7, 4.3, and 5.0 kg/d) from day 108 of gestation until 24 h after the onset of farrowing. The number of total born, live-born, and stillborn piglets; birth time and birth weight of each piglet; and frequency of farrowing assistance (FA) was recorded, and blood samples were obtained from newborn piglets at birth. Live-born piglets were further weighed at 12 and 24 h after birth to record weight gain, which in turn was used to estimate intake and yield of colostrum. Colostrum samples were collected at 0, 12, 24, and 36 h after the onset of farrowing. FD was shortest (4.2 h) at intermediate (3.7 kg/d), longest (7.1 to 7.6 h) at low (1.8 and 2.4 kg/d), and intermediate (5.6 to 5.7 h) at high (4.3 and 5.0 kg/d) feed intake (P = 0.004; mean comparison). FA was lowest (0.7% to 0.8%) at intermediate feed intake (3.7 and 4.3 kg/d) and substantially elevated (4.3% to 4.7%) at both lower and higher feed intake (P = 0.01; mean comparison). The cubic contrast revealed 4.1 kg/d as the optimal feed intake to achieve the shortest FD and to minimize FA. Newborn piglets from second-parity sows were less vital than piglets from gilts as evaluated by blood biochemical variables immediately after birth. CY was greatest at 3.1 kg/d (P = 0.04), whereas the cubic contrast revealed 3.0 kg/d as the optimal feed intake to maximize CY. Concentrations of colostral components were affected by the diet, parity, and their interaction except for lactose concentrations. In conclusion, the study demonstrated the importance of proper feed level during the transition period on sow productivity. Moreover, this study estimated 4.1 and 3.0 kg/d as the optimal feed intake during the transition period to improve farrowing characteristic and CY, respectively, and these two feed intake levels supplied daily 38.8 MJ metabolizable energy (ME) and 23.9 g standardized ileal digestible (SID) lysine (3.0 kg/d) or 53.0 MJ ME and 32.7 g SID lysine (4.1 kg/d). The discrepancy of optimal feed intake for optimal farrowing and colostrum performance suggests that it may be advantageous to lower dietary lysine concentration in the diet fed prepartum. 相似文献
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Analytical validation of a flow cytometric protocol for quantification of platelet microparticles in dogs 下载免费PDF全文
10.
Glutamate dehydrogenase (GLDH), sorbitol dehydrogenase (SDH), 5''-nucIeotidase (5''-ND) and cholin esterase (CHE) were determined in the sera of 37 dogs with various liver diseases. The values for these parameters were compared with the values for aspartate and alanin aminotransferase (ASAT, ALAT), alkaline phosphatase (ALP), γ-glutamyl transferase (γ-GT) and albumin (ALB). GLDH was found to be the most sensitive enzyme parameter (sensitivity 92 %), its values also reflecting the degree of liver cell necrosis well. Next in sensitivity followed ASAT and ALP. SDH values were correlated to ALAT values but had a low sensitivity (43 %). 5''-ND discriminated markedly better between biliary tract disturbance and other lesions than ALP and somewhat better than γ-GT. CHE had a wide reference range, low sensitivity, and was not correlated to ALB. Single determinations of CHE may thus not be of diagnostic value in dogs. 相似文献