The compensatory growth response of the Atlantic cod: effects of nutritional history   总被引：30，自引：0，他引：30  

M. Jobling  O.H. Meløy  J. dos Santos  B. Christiansen 《Aquaculture International》1994,2(2):75-90

The effects of different combinations of nutritional background, feeding regimes and dietary compositions on growth responses of the Atlantic cod have been examined. Alternating short periods (1–3 weeks) of food deprivation with unlimited provision of food depressed growth below that of controls, but cod that were fed on alternate weeks (1:1) were larger than those that were exposed to 2 or 3 week periods of deprivation and feeding (2:2 or 3:3). Thus, periods of food deprivation of short duration were insufficient to induce any marked compensatory growth response. When cod were deprived of food for longer periods a compensatory growth response was observed. On receiving excess food supplies following 8 weeks of food deprivation the fish grew more rapidly than the controls and had completely recovered body weight within 12 weeks. The greatest compensatory growth response was shown by cod in poor condition (lowest condition factor), because at the end of an 18 week growth trial there were no differences in body weight between fish irrespective of their initial condition. Both sexes displayed a compensatory growth response.  相似文献   

Corazón Cerdo: Sistema Papilo-Tendino-Valvular del Ventriculo Derecho     

L. Alvarez  R. Saucedo  Antonia  Aranega  Consolación Melguizo  y  Celia  Velez Amelia E.  Aránega 《Anatomia, histologia, embryologia》1993,22(4):319-323

The right ventricle was studied in 75 anatomically normal swine hearts. Nine parameters in the papillo-tendino valvular system and three corresponding to the tricuspid orifice, pulmonary orifice and length of the inflow tract were measured. Correlations were established between the parameters and heart weight in grams, between the different parameters themselves, and between heart weight and body weight. The results were compared with similar data from human hearts, and were considered of use to researchers planning to use the swine heart as an experimental model to study congenital or induced heart diseases, or as a reference for the clinical interpretation of spontaneous cardiac, anomalies in swine.  相似文献   

Estudio Histoquímico y Morfométrico de la Población Fibrilar del Músculo Diafragma. Parte I: Caballo y Perro     

J. A. Sandoval    F. Gil    A. Arencibia    I. Ayala    y J. Ma. Vazquez 《Anatomia, histologia, embryologia》1995,24(4):269-274

Histochemical and morphometric study of fibrilar population in diaphragm muscle. Part I: Horse and Dog By using m-ATPase techniques, under alkaline and acid pre-incubations, as well as metabolic techniques (α-MGPDH and NADH-TR), sections from the lumbar and costal portions of diaphragm muscle in horse and dog were analysed. Fibre samples were exposed to image-analysis observations in order to determine the lowest fibre diameter and obtain estadistical data. The findings revealed that the lumbar portion of horse diaphragm consists of fibre types I, IIA and IIB; in the costal portion, the fibre types I and IIA were present. In the dog, the lumbar and costal portions consisted of fibre types I, IIA and IIC, which showed some specific histochemical characteristics. Some data concerning both morphometrical and statistical fibre-type analysis are presented.  相似文献   

Inhibición de la Hemaglutinación: Comparación de Macro y Micrométodo: (Virus de la enfermedad de Newcastle e Influenza Equina)     

M. Celedn  P. Berríos  L. Ibarra  M. Pinto y S. Ramírez 《Zoonoses and public health》1982,29(1):51-56

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Laparoscopic cryptorchidectomy in dogs --report of 15 cases   总被引：1，自引：0，他引：1  

Lew M  Jałyński M  Kasprowicz A  Brzeski W 《Polish journal of veterinary sciences》2005,8(3):251-254

The study aimed at determining the usability of laparoscopic cryptorchidectomy in treating cases of simple cryptorchidism and neoplastic testes in dogs. The presence of one or both testes inside the peritoneal cavity was confirmed in this study by an ultrasonographic examination employing the use of a 6.5 MHz convex head. The surgeries were conducted on a group of 15 dogs. In 12 subjects a one-sided cryptorchidism was found, 9 of which had right-sided cryptorchidism. In 3 dogs, both-sided cryptorchidism was observed. In 3 cases, an increase in the size of the abdominal testes with the symptoms of hyperestrogenism and feminisation raised a suspicion of neoplastic changes (SCT) taking place, which was confirmed by a histopathological examination. A laparoscopic cryptorchidectomy with intracorporal ligation was performed in all the subjects. The spermatic cord and ductus deferens were occluded with a ligature of an absorbable material, and a manually applied knot.  相似文献   

Effects of Muscari comosum Extract on Nonspecific Immune Parameters in Gilthead Seabream,Sparus aurata (L. 1758)     

Es&#x;n Baba  Gülen Uluky  Ramazan Mammadov 《Journal of the World Aquaculture Society》2014,45(2):173-182

This study was conducted to determine the effects of Muscari comosum (L.) Mill. 1768, geophyte plant extract on some nonspecific immune parameters of gilthead seabream, Sparus aurata (L. 1758). For this purpose, the plant was collected and extracted in ethanol solvent. Three different fish groups were formed, and each group was duplicated (total 300 fish). The plant extract was applied to the fish by intraperitoneal injection in two different concentrations (0.5 mg/fish and 2 mg/fish). Following injections on the 1st, 7th, 14th, 21st, and 28th d, blood samples were collected from each group. Some of the nonspecific immune parameters in blood and serum samples such as leukocyte level, phagocytic activity (NBT (+) cells), lysozyme activity, and the percentage of white blood cells were determined. The results indicate that in line with the parameters observed, the group given 0.5 mg/fish was not as effective as the one given 2 mg/fish but more effective than the control group. The nonspecific immune parameters of blood samples of the gilthead seabream in the 2 mg/fish experimental group showed that maximum levels on measured parameters of blood were reached at the first week postinjection. The applied concentrations of plant extract did not inhibit growth performance in any of the groups.  相似文献   

云南乌骨绵羊的发现及其特征性状的研究   总被引：14，自引：0，他引：14  

毛华明邓卫东  孙守荣舒文　杨舒黎 《云南农业大学学报(自然科学版)》2005,20(1):89-93,F003

首次报道了乌骨绵羊的发现过程和分布状况,并对其生活环境、外貌和解剖特征作了描述。IR光谱研究结果表明,乌骨绵羊黑色素的基本结构与乌骨鸡基本一致,主要是真黑色素。黑色素在乌骨绵羊组织器官中的沉积表现出明显的时(年龄)空(组织器官)差异,即随着年龄的增加,组织器官中的黑色素含量也随之增加;各组织器官中黑色素含量高低顺序为肝脏>气管、心脏、肾脏>脾脏、肺>舌、肌肉、皮肤>骨骼,与乌骨鸡的沉积模式有所不同。  相似文献   

The effect of infrared stabilized rice bran substitution on B vitamins,minerals and phytic acid content of pan breads: Part II     

N. Barış Tuncel  Neşe Yılmaz  Habib Kocabıyık  Ayşen Uygur 《Journal of Cereal Science》2014

The effect of replacing wheat flour by infrared stabilized rice bran (SRB) at the levels of 2.5, 5.0 and 10.0% on the content of thiamine, riboflavin, niacin, pyridoxamine, pyridoxine, minerals and phytic acid in white wheat, wheat bran, and whole grain wheat breads was investigated. The incorporation of SRB significantly increased the amount of the noted B vitamins, especially niacin, in all bread types (p < 0.05). Zinc, iron, potassium and phosphorus levels of the breads increased gradually and significantly with the inclusion of SRB (p < 0.05). Moreover, phytic acid content of the breads increased proportional to the SRB substitution dose (p < 0.05).  相似文献   

Breeding potato cultivars with tubers resistant toPhytophthora infestans     

K. M. Świeżyński  E. Zimnoch-Guzowska 《Potato Research》2001,44(1):97-117

Summary Available information has been reviewed on tuber resistance toP. infestans, its inheritance and breeding procedures used to obtain potato cultivars superior in this character. P. infestans is worldwide the most destructive potato pathogen. Tuber resistance is an essential component of potato resistance as this pathogen is often responsible for tuber rot in storage, and infected tubers of susceptible cultivars provide an important way for its overwintering. In Europe many cultivars and advanced breeders selections have been obtained with tuber resistance toP. infestans, but in the last decades no progress is noted in the mean level of this resistance in cultivars. The expression of tuber resistance depends to a large extent on testing conditions and therefore it can be difficult to evaluate. Consequently making progress in breeding is not easy, and also cultivar assessment data from various countries sometimes differ considerably. It is concluded from published data that it should be easier to make progress in breeding potato cultivars with resistant tubers if more attention is paid to combining the various types of resistance which are already known, and if the genetic determination of durable resistance toP. infestans is better understood. Professor Dr. K.M. Świeżyński passed away on 27th July 2000  相似文献   

Assessment of the relationship between transepidermal water loss (TEWL) and severity of clinical signs (CADESI‐03) in atopic dogs     

Marcin Zając  Marcin P. Szczepanik  Piotr M. Wilkołek  Łukasz R. Adamek  Zbigniew J. H. Pomorski  Wiesław Sitkowski  Marcin G. Gołyński 《Veterinary dermatology》2014,25(6):503-e83

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