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1.
Alpha‐lipoic acid (ALA) is a multifunction antioxidant that is produced in small amount by cells as well as its dietary provision facilitates fatty acid mobilization, energy expenditure as well as can scavenge free radicals in poultry birds. It exists in oxidized as well as reduced form, characterized by growth promoting, anti‐inflammatory, antioxidative, immunostimulatory, and hypocholesterolemic properties when fed as dietary supplement to farm animals particularly chicken birds. Recently, several studies reported that dietary supplementation of ALA can influence growth performance indicators, immunological, biochemical characteristics, lipid metabolism, and oxidative stress as well as increase antioxidant potential and storability of poultry meat and meat products. Accordingly, this paper adds the reviews and discusses the outcomes of studies documenting the effect of lipoic acid dietary fortification on growth performance, biochemical, and immunological characteristics as well as the effects on lipid peroxidation of fresh meat and meat‐based products. Furthermore, this paper also describes the possibilities of utilization of ALA as a feed additive in poultry nutrition to improve the growth performance of poultry as well as meat quality of resultant chicken birds.  相似文献   

2.
Hypertension is a common sequela to renal disease in cats and dogs, affecting as many as 61% cats and 93% of dogs, respectively. Undiagnosed and untreated, elevations in blood pressure can have deleterious effects on the brain and heart as well as promote further renal injury. In this article, we discuss the identification of patients at risk for hypertension as well as methods for measuring blood pressure and the treatment of hypertensive patients.  相似文献   

3.
Alkaline phosphatase activity as well as lipid, polysaccharide, glycogen, and acid mucopolysaccharide levels in the uteri of 79 gilts were histochemically tested during the first three sexual cycles. Intra-cyclic alkaline phosphatase activity exhibited clearly pronounced variations in the surface epithelium, with maximum values reached in metoestrus, and moderate variations in the endometrial stroma, with maximum values reached in dioestrus. Cycle-dependent variations were recordable also from the glycogen and lipid levels in the surface and glandular epithelia and from the acid mucopolysaccharide levels in the endometrial stroma. The activity of alkaline phosphatase as well as the levels of glycogen and acid mucopolysaccharides during the first cycle still were lower than those in the second and third. Biochemical examinations of the endometrium revealed significant cycle-dependent variations in the activities of alkaline phosphatase, inorganic pyrophosphatase, and succinate-dehydrogenase as well as in the concentrations of soluble protein and glycogen, with maximum values being recordable on the tenth day of cycle. No significant intracyclic variations were recordable from the activities of acid phosphatase as well as of aspartate alanine-amino transferase.  相似文献   

4.
An epidemiological survey of bovine Setaria collected from the abdominal cavities was performed morphologically on the cattle in Aomori and Kumamoto Prefectures, Japan, between August 2005 and July 2006. Fifty Setaria worms were collected from the cattle in Aomori Prefecture and 847 from those in Kumamoto Prefecture. Of these worms, 35 were identified as Setaria digitata, 14 as S. marshalli, and one as S. labiatopapillosa in Aomori Prefecture, while 816 were identified as S. digitata and 31 as S. marshalli in Kumamoto Prefecture.  相似文献   

5.
Inherited intrinsic platelet disorders have been identified in dogs, cattle, horses, and cats as well as other animals. The prevalence of mutations in some breeds is high, making these disorders potentially as common as von Willebrand disease in certain breed lineages.  相似文献   

6.
植生带草坪的建植及管理技术   总被引:2,自引:0,他引:2  
:1997~ 1998年对植生带草坪的建植及管理技术研究表明 :选择草地早熟禾、翦股颖及多年生黑麦草按 5∶4∶1的比例混播制成植生带 ,采取床土覆沙、及时浇水、定期修剪、适当追肥、及时防除杂草和病虫害 ,建坪当年的草坪其密度、盖度、色泽等各项指标均可达到 5级标准  相似文献   

7.
Until recently intra- and extra-cranial vessels in dogs have been imaged using conventional X-ray or digital subtraction angiography. As both of these methods are surgically demanding and involve the use of complex equipment with potential risks for the animal, they are now mainly used in experimental work. In this study, a method for delineating the intra- and extra-cranial vessels of dogs using contrast-enhanced magnetic resonance angiography (CE-MRA) has been examined. The MR images were acquired on a 1.5-T scanner after a bolus injection of gadolinium contrast medium. CE-MRA showed most of the major intra- and extra-cranial arteries and veins as well as most venous sinuses and plexuses of the brain. Difficulties may arise in differentiating between minor arterial and venous vessels as well as in the measurement of vessel diameter. More frequent use of this diagnostic method in clinical cases will indicate whether MRA of the head and brain is of as much use in veterinary medicine as it has become in human medicine. There is certainly potential value in detecting rare conditions in animals such as aneurysms and vascular malformations, as well as in examining vessels feeding intracranial masses and the investigation of cerebrovascular accidents.  相似文献   

8.
Transstadial and transovarial transmission of Anaplasma marginale by Dermacentor variabilis were attempted with with ticks exposed to the organism once by feeding as larvae or nymphs, and twice by feeding as larvae and nymphs. Typical colonies of A marginale were in gut tissues of adults that were infected as larvae, larvae and nymphs, and as nymphs; repeated exposure of ticks did not appear to result in an increase in the number of colonies in the gut of subsequently molted adults nor did it affect severity of the clinical disease that developed in cattle they fed on. In contrast, colonies of A marginale were not found in the midgut epithelium of unfed nymphs exposed as larvae, even though companion nymphs transmitted the parasite, causing severe clinical anaplasmosis in susceptible calves. The organism was not transmitted transovarially by F1 larvae or nymphs from the groups exposed as parent larvae, nymphs, larvae and nymphs, and as adults. Some of the calves fed on by F1 progeny had a few erythrocytic marginale bodies that looked suspiciously like A marginale, as well as postchallenge exposure prepatent periods that were longer than other calves in the transovarial transmission study. Sera from these calves were tested for antibody to A marginale, using a highly sensitive immunoblot technique. Antibodies were not detected in any of the sera.  相似文献   

9.
用培养的布氏杆菌菌体,通过超声波裂解、反复离心制备出布氏杆菌细胞壁抗原。将细胞壁抗原作1:128稀释,用作牛种布氏杆菌酶联免疫吸附试验(ELISA)的抗原;将布氏杆菌细胞壁抗原作1:32稀释,用作平板凝集试验抗原;把细胞壁抗原作1:16稀释用作试管凝集试验抗原,分别建立了牛布氏杆菌ELISA试验、平板凝集试验和试管凝集试验。用这3种方法,检测已知200份平板凝集试验阴性血清,5份平板凝集试验阳性血清。结果5份阳性血清在平板凝集试验、试管凝集试验和ELISA试验中均为阳性;200份阴性血清在平板凝集试验和试管凝集试验中均为阴性,在ELISA试验中有1份为阳性?试验证明,细胞壁抗原,既能用于传统的平板凝集试验和试管凝集试验,又能用于ELISA试验。  相似文献   

10.
随着人们对纳米技术的深入探索,各种纳米材料被广泛应用于生物医学领域中.其中碳纳米管(carbon nanotubes,CNTs)具有体积小、比表面积高等独特的物理化学性质,能够吸附或偶联生物大分子或药物,并可穿透细胞膜,有效跨越生物屏障,发挥了其作为载体的特性,在蛋白质、基因和药物传递方面具有广阔的应用前景,受到越来越...  相似文献   

11.
The past 10-20 years have seen exponential growth in the volume of trade in horses and equine germplasm; and the extent of global horse movements has increased significantly in the last 4 years. In preparing for the transport of elite Olympic horses to Hong Kong in 2008, it will be very important to be as fully informed as possible of the disease situation in both the exporting and importing country, import and re-entry requirements, as well as having a vaccination strategy to protect against particular diseases. In this context the review describes the equine vector-borne disease situation in Europe, Asia, Africa and South America and provides estimates of the number of horse movements between these countries, as well as information on import requirements and vaccination strategies.  相似文献   

12.
Shiga toxin (Stx) [Verotoxin (VT)]-producing Escherichia coli (STEC), also called enterohaemorrhagic E. coli or VTEC are emerging zoonotic agents and became most important as human pathogens, particularly in the industrialized countries. Production of cytotoxins, also called Stx or VT, is the major pathogenicity determinant of STEC, which can cause life-threatening haemorrhagic diseases in humans. The spectrum of STEC phenotypes is diverse and domestic and wildlife animals constitute important reservoirs for these bacteria. STEC are spread from animal faeces to the environment, water and food. Ingestion of contaminated foodstuff and water, as well as contact with the environment, STEC-excreting animals or humans are the major sources of human infection. Economical changes in animal and food production, alteration of consumer habits and lack of specific immune response, particularly in urbanized populations, have contributed to the recent spread of STEC as a zoonotic agent. Supranational surveillance networks as well as national reference laboratories as sentinels play an important role in the prevention and control of STEC infections in humans. Development of new vaccines and probiotics may serve as future tools to control the spread of STEC in animals and humans.  相似文献   

13.
14.
Using reproduction parameters as indicators for cattle welfare has limitations and, at best, these parameters should only be viewed as indirect indicators of welfare. On a farm level, measures such as fertility rates emphasize biological performance of the herd but fail to consider the welfare of individual animals. Even on an individual level, the relationship between reproductive effectiveness and animal welfare is complex. Good reproductive performance does not automatically signify good welfare, as domestication and targeted breeding programmes have led to prioritization of high productive and reproductive performance in most modern farm animal species. In this review, we synthesize literature regarding cattle husbandry, reproduction, welfare and their multidimensional relationships. We argue that practices such as artificial insemination or the use of sexed semen may provide potential welfare advantages as these practices reduce the risk of disease transmission and injury or enable selection of specific beneficial traits. Furthermore, they may offer a solution to current practices jeopardizing welfare, such as the management of surplus bull calves in the dairy industry. Conversely, the animals’ ability to perform natural behaviours such as oestrous expression, an aspect arguably contributing to welfare, is often limited on commercial farms; this limitation is particularly evident in housing systems such as tie stalls where movement is restricted. Moreover, common management practices such as oestrus manipulation may lead to negative attitudes in citizens who often regard naturalness as important element of animal welfare.  相似文献   

15.
General veterinarians such as veterinary officers act as experts at court. They are in so far part of the evidence. Due to his experience the veterinary expert shall give systematical uniform principles concerning even domains adjacent to the field of animal protection such as protection of animal epidemics and food cases, verifiable by science and university research. Examples for expert's topics as well as the requirements of expert reports are shown. According to paragraph 15 II Tierschutzgesetz (Animal Protection Act), as well as according to paragraph paragraph 63, 76 Ordnungswidrigkeitengesetz the experts participation in the proceeding is necessary. In consideration of paragraph paragraph 74, 22 Strafprozessordnung (Code of Criminal Proceedure) conflicts may arise because the veterinarian officer is self-contained investigator, witness as well as expert in the same proceeding. In general the veterinarian officer, who has been involved in the investigations must be excluded from expert activity in the same case. The veterinarian officers have to solve this problem by seperating tasks and functions within one legal case.  相似文献   

16.
This review examines the current state of knowledge of aspects of tuberculosis in the badger. The gross pathology and pathogenesis are elaborated as well as the immune mechanism, diagnosis of infection and excretion and viability of infected products. The epidemiology in badgers is considered, as is the significance of infection in this species for other wildlife species as well as domestic animals sharing the same habitat. Trials of the effects of the removal of badgers on the occurrence of tuberculosis in cattle are summarised. It is concluded that badgers are well adapted as the primary host of bovine tuberculosis in parts of Britain and much of Ireland.  相似文献   

17.
构成机体免疫系统的基本物质蛋白质和氨基酸等,以及参与免疫应答的微量元素和维生素等营养物质都对肉鸡免疫系统功能的发挥起着重要作用。本文综述了近年来国内外有关饲粮营养物质水平和饲料添加剂对肉鸡免疫功能的营养调控作用研究,旨在为肉鸡的健康养殖提供理论依据。  相似文献   

18.
Although psittacine species represent the majority of avian patients seen in most exotic animal practices, nonpsittacine species such as passerines and galliformes may be presented as pets, as members of zoo collections, or as injured or ill wildlife. Many features of handling, restraint, sample collection, medicine, and surgery are similar in psittacine and nonpsittacine species. In many cases, the equipment required will be similar as well, with a few modifications.  相似文献   

19.
Nucleated erythrocytes of healthy domestic chicken and ducks, and lymphocytes of healthy Sprague Dawley rats were evaluated for nucleic acid distribution pattern, employing light and fluorescence microscopy procedures, as well as digital imaging analytical methods. The results demonstrate a unique organization of nuclear DNA of mature chicken and duck erythrocytes, as well as immature duck erythrocytes, as delineated spherical nuclear bodies that mostly corresponded with euchromatin zones of the cells in routine Wright-stain blood smears. The nuclear DNA of the rat lymphocytes, on the other hand, was observed as a more diffuse green fluorescing nuclear areas, with punctate variably-sized diffuse areas of RNA red fluorescence. RNA red color fluorescence was also evident in the narrow cytoplasm of the lymphocytes, especially in large lymphocytes, in comparison with the cytoplasm of the mature avian erythrocytes that completely lacked any nucleic acid fluorescence. Nuclear RNA fluorescence was lacking in the mature chicken erythrocytes, compared with those of the mature and immature duck erythrocytes as well as lymphocytes of both avian and rats blood. The significance of these findings lies in the establishment of normal benchmarks for the nuclear and cytoplasmic nucleic acid pattern in eukaryotic cells. These normal benchmarks become valuable in rapid diagnostic situations associated with pathologies, such as the presence of viral nuclear and cytoplasmic inclusion bodies that can alter the nucleic acid pattern of the host cells, and in conditions of cellular abnormal protein aggregations. Variability of cellular nucleic acid pattern can also aid in prognostic assessments of neoplastic conditions.  相似文献   

20.
Health problems in pedigree dogs have recently been highlighted in the media worldwide and verified internationally by cynological organisations. Collaborative actions are now needed to deal with both existing and future issues. In this article, potential roles for various stakeholders are discussed and the value of national and international platforms for collaborations is stressed. Development of specific strategies for action must be based on criteria of significance, such as severity, prevalence and inheritance, as well as availability of effective preventive measures. Assessment of options should be founded on evidence from appropriate populations-at-risk and consider broader issues, such as demographics and human-animal interactions. Existing data, such as those from insurance statistics and health surveys, should be used as a reference until representative national/international population-level breed-specific data are available. Key issues and challenges, as well as possible strategies to address them, are discussed.  相似文献   

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