Добірка наукової літератури з теми "Sheep Physiology"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Sheep Physiology".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

За допомогою хмари тегів ви можете побачити ще більше пов’язаних тем досліджень, а відповідні кнопки після кожного розділу сторінки дозволяють переглянути розширені списки книг, статей тощо на обрану тему.

Пов'язані теми наукових робіт:

Статті в журналах з теми "Sheep Physiology":

1
Julien, M., J. M. Hoeffel, and M. R. Flick. "Oleic acid lung injury in sheep." Journal of Applied Physiology 60, no. 2 (February 1986): 433–40. http://dx.doi.org/10.1152/jappl.1986.60.2.433.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Intravenous infusion of oleic acid into experimental animals causes acute lung injury resulting in pulmonary edema. We investigated the mechanism of oleic acid lung injury in sheep. In experiments with anesthetized and unanesthetized sheep with lung lymph fistulas, we measured pulmonary arterial and left atrial pressures, cardiac output, lung lymph flow, and lymph and plasma protein concentrations. We injured the lungs with intravenous infusions of oleic acid at doses ranging from 0.015 to 0.120 ml/kg. We found that oleic acid caused reproducible dose-related increases in pulmonary arterial pressure and pulmonary vascular resistance, arterial hypoxemia, and increased protein-rich lung lymph flow and extravascular lung water. The lung fluid balance changes were characteristic of increased permeability pulmonary edema. Infusion of the esterified fat triolein had no hemodynamic or lung fluid balance effects. Depletion of leukocytes with a nitrogen mustard or platelets with an antiplatelet serum had no effect on oleic acid lung injury. Treatment of sheep before injury with methylprednisolone 30 mg/kg or ibuprofen 12.5–15.0 mg/kg also had no effects. Unlike other well-characterized sheep lung injuries, injury caused by oleic acid does not require participation of leukocytes.
2
Pearse, D. B., E. M. Wagner, and J. T. Sylvester. "Edema clearance in isolated sheep lungs." Journal of Applied Physiology 74, no. 1 (January 1993): 126–32. http://dx.doi.org/10.1152/jappl.1993.74.1.126.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Edema may be cleared from the lung by lymphatic drainage, transudation across the visceral pleural, vascular reabsorption, and movement into the mediastinum. To determine the quantity and mechanisms of edema clearance associated with spontaneous edema formation in isolated sheep lungs, we perfused six lungs for 180 min with blood (100 ml.kg-1.min-1) at subatmospheric left atrial pressure (Pla) from a weighed reservoir. In six other lungs, Pla was increased to 20 mmHg at 30–75 min to further augment edema. Fluid drainage from the lung was fractionated into blood and water components by serial measurements of drainage and perfusate hematocrit. Changes in weight of circulating intravascular blood and extravascular lung water (EVLW) were also directly measured by dye dilution and standard gravimetric techniques, respectively. From these measurements, we calculated that 3.04 +/- 0.53 g/g blood-free dry lung of water filtered into the extravascular space during perfusion. Of this amount, 42% was reabsorbed into the pulmonary vasculature; 18% drained from the lung via lymphatics, visceral pleura, and mediastinum; and 40% was retained in the lung. Compared with low Pla lungs, transient elevation of Pla increased lung hemorrhage and the final change in reservoir weight, but the quantity and clearance of cumulative filtered water and the final values of EVLW and wet-to-dry weight ratio (WW/DW) were not altered. These results suggest that 1) significant edema clearance occurred in isolated sheep lungs, primarily by vascular reabsorption, and 2) measurements of EVLW and WW/DW under-estimated injury in the presence of lung hemorrhage and significant edema clearance.
3
Diven, R. H., R. E. Reed, and W. J. Pistor. "THE PHYSIOLOGY OF NITRITE POISONING IN SHEEP*." Annals of the New York Academy of Sciences 111, no. 2 (December 2006): 638–43. http://dx.doi.org/10.1111/j.1749-6632.1964.tb53131.x.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
McAllen, R. M., G. L. Pennington, and M. J. McKinley. "Osmoresponsive units in sheep median preoptic nucleus." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 259, no. 3 (September 1990): R593—R600. http://dx.doi.org/10.1152/ajpregu.1990.259.3.r593.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Single-unit neural activity in the lamina terminalis, a region implicated in osmoregulation, was studied in alpha-chloralose-anesthetized sheep during mild hyperosmotic stimulation (intracarotid infusions of 1.65 M NaCl, 3 M sorbitol in 0.15 M NaCl, or 3 M urea in 0.15 M NaCl, at 1 ml/min). Twelve of 121 units (9.9%) were activated significantly (by 82 +/- 52%) by 2- to 3-min infusions of 1.65 M NaCl. Eleven of these and one untested unit were excited by hypertonic sorbitol (91 +/- 40% increase). Of five units further tested with urea, two were excited (by 19 and 58%). Isotonic or hypotonic NaCl infusions were without effect (eight osmoresponsive units tested). All responsive units were in the median preoptic nucleus (MnPO; nucleus medianus). MnPO units were compared with neurohypophysial fibers (multiunit recordings). Osmotic response profiles were similar; both MnPO units and neurohypophysial fibers responded equally to hypertonic NaCl and sorbitol but less to equiosmolal urea. Both MnPO units and neurohypophysial fibers responded slowly, taking 50 and 30 s of NaCl infusion, respectively, to show significant increases and approximately 2 min to reach peak activity. Their hemodynamic responses differed, however; neurohypophysial fibers were strongly excited by nitroprusside-induced hypotension (three of three animals) but MnPO osmoresponsive units were not (zero of five units). Osmoresponsive MnPO units may contribute osmotic, but not hemodynamic, inputs to control vasopressin secretion and/or osmoregulatory responses.
5
al-Bazzaz, F. J., C. Tarka, and M. Farah. "Microperfusion of sheep bronchioles." American Journal of Physiology-Lung Cellular and Molecular Physiology 260, no. 6 (June 1991): L594—L602. http://dx.doi.org/10.1152/ajplung.1991.260.6.l594.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
We isolated segments of sheep bronchioles (length 406 +/- 46 microns, diameter 227 +/- 53 microns, n = 27). These segments were placed in a 37 degree C bath and cannulated at both ends with glass micropipettes. The proximal end was cannulated and held by three concentrically arranged micropipettes that delivered perfusion solution by gravity. The distal end was cannulated and held by two concentrically arranged micropipettes for fluid collection. When both the lumen and the bath contained oxygenated Krebs-Henseleit buffer (pH 7.40), spontaneous potential difference (PD) was 2.46 +/- 0.39 mV, lumen negative. KCN in the bath diminished PD by 1.48 +/- 0.29 mV (P = 0.00003, n = 25). The isolated bronchiole was depolarized when the luminal solution was Na free (delta PD -1.78 +/- 0.11 mV, P = 0.00007, n = 5) or when the submucosal bath was Cl free (delta PD -2.63 +/- 0.81, P = 0.018, n = 7). In preparations pretreated with 10 microM indomethacin, 1 microM isoproterenol raised PD by 0.75 +/- 0.29 mV (P = 0.03, n = 8), whereas 0.1 mM submucosal bumetanide reduced PD by 0.21 +/- 0.04 mV (P = 0.0005, n = 8). The data show that microperfusion technique is applicable for investigating ion transport by distal bronchioles and that the bronchiolar epithelium probably has both Na and Cl conductive pathways.
6
Morand, C., C. Yacoub, C. Remesy, and C. Demigne. "Characterization of glucagon and catecholamine effects on isolated sheep hepatocytes." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 255, no. 4 (October 1988): R539—R546. http://dx.doi.org/10.1152/ajpregu.1988.255.4.r539.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The purpose of this study was to characterize the glycogenolytic response to catecholamines and glucagon in isolated sheep hepatocytes. In this species, epinephrine appeared to exert its action on hepatic glycogenolysis by altering the cytosolic concentrations of both adenosine 3',5'-cyclic monophosphate (cAMP) and Ca2+. In contrast to results obtained in rat hepatocytes, glucagon failed to induce a rise in free cytosolic Ca2+ in sheep liver. Experiments on isolated hepatocytes or on liver plasma membranes showed that in sheep, glucagon was more efficient than epinephrine in promoting the production of cAMP. In the presence of glucagon or epinephrine, the activation of the glycogen phosphorylase a always appeared greater in sheep than in rat liver cells, whereas the variations in cellular cAMP were quite limited in sheep. The alpha 1- and beta-agonists (phenylephrine and isoproterenol) were alone as efficient as epinephrine in promoting phosphorylase a activation in sheep hepatocytes. All these results indicate the existence in sheep liver of a glycogen phosphorylase highly responsive to hormones.
7
Snapper, J. R., and P. L. Lefferts. "Effects of aerosol histamine and carbachol on central and peripheral airflow resistance in sheep." Journal of Applied Physiology 61, no. 2 (August 1986): 760–65. http://dx.doi.org/10.1152/jappl.1986.61.2.760.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Sixteen anesthetized artificially ventilated open-chest sheep were prepared with retrograde catheters to allow for measurement of dynamic compliance of the lungs (Cdyn), total airflow resistance of the lungs (RL), and central (Rc) and peripheral (Rp) airflow resistance. Twelve sheep received aerosol histamine and 12 sheep received aerosol carbachol. Eight sheep received and responded to both aerosol histamine and aerosol carbachol. Three sheep received both aerosol histamine and aerosol carbachol but failed to respond to both agents. Under base-line conditions, for the 16 sheep, 69% of total RL was located in the peripheral component, Rp, and 31% in the central component, Rc. Aerosol histamine caused only peripheral small airway changes while aerosol carbachol predominantly effected the central large airways. When aerosol histamine responsiveness, defined using Cdyn or Rp, was compared to aerosol carbachol responsiveness using Rc, a correlation was demonstrable (r = 0.84, n = 8, P less than 0.05). It is possible in sheep to cause relatively pure peripheral small airway and relatively pure central large airway changes by using different bronchoconstrictor agents. Aerosol histamine and aerosol carbachol responsiveness correlated with each other in these artificially ventilated anesthetized sheep.
8
Owens, J. A., J. Falconer, and J. S. Robinson. "Glucose metabolism in pregnant sheep when placental growth is restricted." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 257, no. 2 (August 1989): R350—R357. http://dx.doi.org/10.1152/ajpregu.1989.257.2.r350.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The effect of restricting placental growth on glucose metabolism in pregnant sheep in late gestation was determined by primed constant infusions of D-[U-14C]- and D-[2-3H]glucose and antipyrine into fetuses of six control sheep and six sheep from which endometrial caruncles had been removed before pregnancy (caruncle sheep). In the latter, placental and fetal weights were reduced, as was the concentration of glucose in fetal arterial blood. Fetal glucose turnover in caruncle sheep was only 52-59% of that in controls, largely because of lower umbilical loss of glucose back to the placenta (38-39% of control) and lower fetal glucose utilization (61-74% of control). However, fetal glucose utilization on a weight-specific basis was similar in control and caruncle sheep. Significant endogenous glucose production occurred in control and caruncle fetal sheep. Maternal glucose production and partition of glucose between the gravid uterus and other maternal tissues were similar in control and caruncle sheep. In conclusion, when placental and fetal growth are restricted, fetal glucose utilization is maintained by reduced loss of glucose back to the placenta and mother and by maintaining endogenous glucose production.
9
Fortune, J. A. "Reproductive physiology of Merino sheep: Concepts and consequences." Animal Reproduction Science 30, no. 4 (January 1993): 335–36. http://dx.doi.org/10.1016/0378-4320(93)90083-4.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Ahmad Pampori, Zahoor, Aasif Ahmad Sheikh, Ovais Aarif, Dilruba Hasin, and Irfan Ahmad Bhat. "Physiology of reproductive seasonality in sheep – an update." Biological Rhythm Research 51, no. 4 (December 2018): 586–98. http://dx.doi.org/10.1080/09291016.2018.1548112.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Дисертації з теми "Sheep Physiology":

1
Hopkins, John. "Lymphoid physiology of the sheep." Electronic Thesis or Dissertation, University of Edinburgh, 2000. http://hdl.handle.net/1842/29805.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The aim of this thesis is to bring together and summarize the results of twenty-five years of active research into the immunology and physiology of the mammalian lymphoid system using the sheep as the model species. For this work I have exploited the cannulation of peripheral lymphatics, which enables the monitoring of lymph, lymphocytes and dendritic cells that are constantly trafficking from the skin or from lymph nodes. The use of this technique in the sheep permits access to large numbers of lymph-borne cells over extensive periods and in a form far closer to their in vivo non-activated state than from any other species. I have organized the publications into four distinct, but interrelated chapters. Chapter 1 is concerned with the physiology of sheep lymphoid cells and describes the use of the cannulated lymphatic model to answer fundamental questions of lymphoid biology. My earliest work was focused on the non-random migration of lymphocytes and the identification of two lymphocyte populations; one associated with the gastrointestinal tract and other mucosal organs and the other with peripheral lymph nodes and the spleen. Later work identified two separate populations of B cells with distinct recirculation properties and also concentrated on the lymph node response to antigen and the role played by antigen in modulating lymphocyte recirculation. Much of my work in the last few years has been concerned with the biology of dendritic cells (DCs), the cell population uniquely able to induce the primary immune response. The "pseudo-afferent" cannulation system in sheep is, arguably the best system for this study, as the isolation procedure does not lead to aberrant changes in cell phenotype and function. Chapter 2 relates the work to characterize the sheep immune system, in order to exploit further the sheep as a species for immunological study. Much of my efforts involved the production and characterization of anti-sheep MHC and CD1 monoclonal antibodies (mAbs). This resulted in the generation of monoclonal reagents that are now the standards used to define the ovine/bovine homologues of MHC class I, and class II and CD1.
2
Morrow, Robert James. "Blood flow velocity changes in the umbilical artery of the fetal sheep." Electronic Thesis or Dissertation, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356870.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3
Nicholls, C. D. "Endoscopy, physiology and bacterial flora of sheep infected with abomasal nematodes." Electronic Thesis or Dissertation, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377967.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
Falchi, Laura. "Transcervical artificial insemination and physiology of the cervix of the sheep." Electronic Thesis or Dissertation, Royal Veterinary College (University of London), 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558963.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5
Yarney, Thaddeus A. "Sexual maturational changes in the pituitary and testes of ram lambs and predictability of adult reproductive function." Electronic Thesis or Dissertation, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72049.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Spring-born ram lambs were used to examine: (1) sexual maturational changes in LH, FSH and prolactin (PRL) secretion, testicular gonadotropin receptors, and testicular size and function; (2) predictability of yearling ram reproductive function from juvenile testicular size and reproductive hormone measurements. Despite continuous increases in testis size, serum LH-profile characteristics became greatest between 2 and 4 months and declined thereafter. However, LH-peak frequency increased by about 2-fold between 6 and 7 months; this was associated with marked increases in testosterone (T) secretion and spermatogenic function. Mean FSH and PRL levels were maximum at 2 months and 3 to 5 months, respectively, and decreased thereafter. Increases in steroidogenic and spermatogenic function were due partly to increases in testicular content of LH and FSH receptors. Yearling ram testis size and spermatogenic function were predictable from testis size at 5 to 6 months, neonatal (50 days) secretion of LH and T, and pubertal (150 days) secretion of T. However, combinations of testicular size and reproductive hormone measurements provided greater predictive power.
6
Vasquez, Hidalgo Manuel Alexander. "Effects of Nutrient Restriction, Realimentation, and Twinning on Plasma Volume, Umbilical Hemodynamics and Placental Characteristics in the Pregnant Adolescent Ewe." Text/dissertation, North Dakota State University, 2010. https://hdl.handle.net/10365/31573.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Reproductive physiology in production animals is a key economic component of longevity and profitability of animal farming. There are several components that can benefit or compromise adequate pregnancy periods. Sheep production is not only a very important economic activity for farmers around the United States, but sheep are also an important medical and surgical model to study human diseases. Our findings suggest that estradiol-17 beta could be involved in acute increased plasma volume early in gestation which can benefit overall gestation. We report that umbilical blood flow decreases upon nutrient restriction in adolescent ewes and does not recover upon realimentation. Finally, we suggest that a similar umbilical blood flow, placental development and plasma volume expansion in twins and singleton pregnancies could be enough to obtain similar birthweights in singletons and twins.
7
Xu, Zheng-Chun. "Regulation of the NaK-ATPase of sheep red blood cells of the low- K+ genotype." Electronic Thesis or Dissertation, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41790.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
A genetic polymorphism of sheep red cells characterized by differences in the intracellular K$ sp+$ concentration of their mature red cells reflects differences in their Na/K pump activity as well as pump kinetics. This polymorphism is linked to the ML blood group system, as follows. Homozygous high-K$ sp+$ (HK) cells possess only M antigen, whereas homozygous low-K$ sp+$ (LK) cells have an antigen, L$ rm sb{p},$ which is an endogenous inhibitor of the Na/K pump since isoimmune antiserum, anti-L$ rm sb{p},$ stimulates the Na/K pump of LK cells by relieving this inhibition. In this study, it is shown that the $ rm L sb{p}$ antigen is a molecular entity distinct from the pump. Thus, anti-$ rm L sb{p}$ stimulated the activity (ouabain-sensitive $ rm sp{86}Rb sp+(K sp+)$ influx) of exogenous rat kidney pumps incorporated by fusion of kidney microsomes into immature LK red cells. Moreover, the $ rm L sb{p}$ antigen is responsible for the changes in pump kinetics associated with maturation of LK sheep red cells. The evidence is that treatment of immature LK cells with either anti-L$ rm sb{p}$ or trypsin (which cleaves the $ rm L sb{p}$ antigen) prevents the maturation-associated change in kinetics of the pumps, normally from one of no inhibition (immature cells) to that of marked inhibition by intracellular K$ sp+$ (mature cells). In addition, it was shown that kidney pumps delivered into immature LK red cells develop sensitivity to inhibition by intracellular K$ sp+$ following maturation of the cells in vitro. Mature LK cells have fewer pumps than mature HK cells and, therefore, another question addressed was whether the $ rm L sb{p}$ antigen promotes the greater loss of pumps in LK red cells during maturation. It was observed that modification of the $ rm L sb{p}$ antigen of immature LK cells with either anti-L$ rm sb{p}$ or trypsin diminished the subsequent loss of pumps during maturation in vitro. It was shown also that there is little decline in the number of $ rm
8
Pretorius, Willem S. "An alternative approach to premature luteal regression." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17406.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Thesis (MSc)--University of Stellenbosch, 2006.
ENGLISH ABSTRACT: Premature luteal regression occurs on average in 30% of superovulated sheep ewes. This phenomenon occurs early in the cycle before the embryo’s can be collected and is a major contributor to failure in embryo transfer programs. This research was done to understand the physiological mechanisms involved. Chapter two provides a general background of the physiology of natural luteolysis and the maternal recognition of pregnancy. The chapter introduces some new concepts on the topic of cell death and provides a recent literature review on research done on the phenomenon of premature luteal regression. This chapter forms the base of ideas and arguments that follows in the two studies containing new original work in this field. The research contained in this thesis comprises of two in vivo studies. The first study (Chapter 3) compare premature luteal regression to Prostaglandin F2α (PGF2α) induced regression with emphasis on the changes in levels of the steroid hormones progesterone (P4) and estradiol - 17β (E2-17β) and changes in structure and ultra structure. The following conclusions were made: 1. Premature luteal regression is not merely inadequate luteal support, but indeed early luteal regression, since seasonal influences could merely be nutritional influences, and a definitive increase in P4 were recorded in animals exhibiting the phenomena. 2. Nutritional influences could play a role, but the type and quality of nutrients and mechanism involved, is still unclear. 3. PGF2α-induced regression differs from premature luteal regression in that: a) The progression of functional and structural regression in PGF2α -induced regression is slower than in premature luteal regression. b) Regressed corpora lutea do not occur with normal functioning corpora lutea. 4. There is a distinct second E2-17β peak preceding the decline in P4 in animals that exhibits signs of premature luteal regression. A threshold initiating premature luteal regression was not established. The second study (Chapter 4) compares the changes in the ovine β estradiol - 17 β receptor (oERβ) between premature luteal regression and PGF2α induced regression. The study concludes that there could be a potential role for oERβ in premature luteal regression. The findings of these two studies raise some questions about the conventional perception that early release of PGF2α is the cause of premature luteal regression. The thesis concludes in a hypothesis (Chapter 4) explaining the phenomenon.
AFRIKAANSE OPSOMMING: Premature luteale regressie kom gemiddeld in 30% van gesuperovuleerde skaap-ooie voor. Die verskynsel kom vroeg in die siklus voor, voor die embrios gekollekteer kan word, en is een van die belangrikste oorsaake van mislukkings in ‘n embrio-oorplaasingsprogram. Die huidige navorsing poog om die fisiologiese meganismes betrokke by premature luteale regressie te verstaan. Hoofstuk twee verskaf ‘n algemene agtergrond van die fisiologiese aspekte betrokke by natuurlike luteale regressie en maternale herkenning van swangerskap. Die hoofstuk stel nuwe konsepte voor oor sel afsterwing en verskaf ‘n opgedateerde literatuuroorsig met betrekking tot die navorsing wat in die veld oor die verskynsel gedoen is. Die hoofstuk vorm die basis vir die idees en argumente, wat volg in die twee studies en wat oorspronklike nuwe navorsing bevat oor die onderwerp. Die navorsing in die tesis bestaan uit twee in vivo studies. Die eerste studie (Hoofstuk 3) vergelyk premature luteale regressie en prostaglandien F2α (PGF2α) ge-induseerde regressie met ‘n klem op die vlakke van die steröiedhormone progesteroon (P4) en estradiol - 17β (E2-17β) en veranderinge in die mikroskopiese struktuur en ultra struktuur van die corpus luteum. Die studie bevind: 1. Premature luteale regressie is nie slegs onvoldoende luteale funksie nie, maar vroë luteale regressie aangesien seisoenale invloede eitlik voedings invloede kan wees en P4 gestyg het in diere waar die verskynsel voorgekom het. 2. Voeding kan ‘n rol speel maar die tiepe en gehalte van die voedingstowwe en die meganismes betrokke is nie duidelik nie. 3. PGF2α - ge-induseerde regressie verskil van premature regressie in dat: a) Die verloop van funksionele en strukturele regressie is stadiger in PGF2α - ge-induseerde regressie in vergelyking met premature luteale regressie. b) Corpora lutea wat regressie ondergaan het kom nie voor saam met corpora lutea wat normal voorkom nie. 4. Daar die ‘n duidelike tweede piek van E2-17β gaan die afname in P4 vooraf in diere waar premature regressie voorkom. 5. Daar is nie geslaag om ‘n drempel vas te stel waar premature regressie ge-inisieer word nie. Die tweede studie vergelyk die veranderinge in estradiol-17β reseptore (oERβ) in die skaap tydens premature luteale regressie en PGF2α geinduseerde regressie. Die studie bevind dat daar ‘n moontlike rol is vir ERβ in premature luteale regressie. Die bevindinge van die twee studies bevraagteken die konvensionele opvatting dat vroë vrystelling van PGF2α verantwoordelik is vir premature luteale regressie. Die tesis sluit af met ‘n nuwe hipotese om die verskynsel te verduidelik.
9
Williams, Claire Louise. "The effects of molybdenum, iron and sulphur on copper metabolism and physiology of sheep." Electronic Thesis or Dissertation, Open University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403832.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Boullin, Julian. "The effects of early life nutrient restriction on the cardiovascular system of the adult sheep." Electronic Thesis or Dissertation, University of Southampton, 2008. https://eprints.soton.ac.uk/72958/.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
There is now strong epidemiological and animal research showing that undernutrition in gestation and early postnatal life is linked with a higher incidence of cardiovascular disease in adulthood. The physiological processes involved are not yet clear. The aim of this thesis was to investigate how aspects of the cardiovascular system in the adult sheep are affected by early life periods of undernutrition, and to investigate to concept that mismatches in these periods may influence these responses. Welsh Mountain ewes received 100% of global nutritional requirements at all times (C) except from minus 30 to day of conception (B), from minus 15 to 15 days after conception (A), or from day 1 of gestation to 31 days gestation (U) when they received 50% of total nutrient requirements. Offspring of groups C & U were then fed ad libitum (CC & UC) or at a level that reduced body weight to 85% of individual target weight from 12 to 25 weeks postnatal age (CU & UU). The adult sheep cardiovascular function was studied at 2.5 years and 3.3 years. At 2.5 years the UC males showed an increased interventricular wall thickness without loss in function. These effects were not seen if early postnatal restriction was also received. In contrast, females subject in the gestational undernutrition (UC) showed a dampened heart rate response to a stressor, which was not seen when combined with a postnatal challenge (UU). Basal adrenaline was elevated in male and female singletons exposed to the postnatal challenge (CU & UU). The stressor produced an enhanced adrenaline response in the females in the postnatally challenged group (CU). This effect was attenuated when combined with a gestational challenge (UU). Thus early life undernutrition alters adult cardiovascular physiology and may have consequences for cardiovascular function and disease in later life. These effects are sex-specific. The cardiovascular system is affected by the mismatch between gestation and early postnatal nutrition.

Книги з теми "Sheep Physiology":

1
Butterfield, Rex M. New concepts of sheep growth. Sydney: Published by the Dept. of Veterinary Anatomy, University of Sydney, 1988.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2
Hewat, Tim. The Florey: The story of the Sheep Hilton. North Ryde, NSW, Australia: Angus & Robertson, 1989.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3
Mason, B. D. Nutrition guide for B.C. sheep producers. [Victoria, B.C.?]: Province of British Columbia, Ministry of Agriculture and Food, 1985.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
Grist, A. Ovine meat inspection: Anatomy, physiology, and disease conditions. Nottingham, U.K: Nottingham University Press, 2010.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5
Sharpe, Ann. Studies in perinatal lamb mortality in prolific sheep. Dublin: University College Dublin, 1998.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6
Winter, Agnes C. A handbook for the sheep clinician. 7th ed. Oxfordshire: CAB International, 2012.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7
Alda, Arlene. Sheep, sheep, sheep, help me fall asleep. New York: Delacorte Press, 1992.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8
French, Jackie. Pete the sheep-sheep. New York: Clarion Books, 2005.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9
Little, Jean. Sheep don't count sheep. New York: Margaret K. McElderry Books, 2003.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Nelson, Robin. Sheep. Minneapolis: Lerner Publications, 2009.
Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Частини книг з теми "Sheep Physiology":

1
Rousseau, J. P., A. Marie, and M. Falempin. "6. Afferent Vagal Traffic in Conscious Sheep." In Aspects of Digestive Physiology in Ruminants, edited by Marjorie J. Dobson, 123–39. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501745713-008.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2
McKinley, M. J., D. A. Denton, M. Leventer, R. R. Miselis, R. G. Park, E. Tarjan, J. B. Simpsom, and R. S. Weisinger. "Adipsia in Sheep Caused by Cerebral Lesions." In The Physiology of Thirst and Sodium Appetite, 321–26. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-0366-5_41.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3
Sutherland, T. M. "3. Particle Separation in the Forestomachs of Sheep." In Aspects of Digestive Physiology in Ruminants, edited by Marjorie J. Dobson, 43–73. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501745713-005.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
Weisinger, R. S., D. A. Denton, M. J. McKinley, J. B. Simpson, and E. Tarjan. "Cerebral Na Sensors and Na Appetite of Sheep." In The Physiology of Thirst and Sodium Appetite, 485–90. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-0366-5_64.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5
Forbes, Andrew B. "Ectoparasites of sheep: sheep mange mites." In Parasites of cattle and sheep: a practical guide to their biology and control, 267–74. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789245158.0267.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6
Thomas, David L., and George F. W. Haenlein. "Sheep Milk." In Handbook of Milk of Non-Bovine Mammals, 181–209. Oxford, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119110316.ch3.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7
de la Fuente, Miguel Angel, Ramos Mercedes, Recio Isidra, and Juárez Manuela. "Sheep Milk." In Milk and Dairy Products in Human Nutrition, 554–77. Oxford: John Wiley & Sons, 2013. http://dx.doi.org/10.1002/9781118534168.ch25.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8
Ma, Li. "Lost Sheep." In Christianity, Femininity and Social Change in Contemporary China, 29–40. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31802-4_3.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9
Meadows, Jennifer R. S. "Sheep: Domestication." In Encyclopedia of Global Archaeology, 9637–40. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30018-0_2215.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Mehlhorn, Heinz. "Sheep Tick." In Encyclopedia of Parasitology, 2507. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4322.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Sheep Physiology":

1
Angstenberger, Vera. "Oh sheep!" In ACM SIGGRAPH 2012 Computer Animation Festival. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2341836.2341878.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2
McLean, Alistair, and Robert Jarvis. "Electric Sheep." In CHI PLAY '18: The annual symposium on Computer-Human Interaction in Play. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3270316.3272057.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3
Rosen, Dani. "Censor-sheep." In ACM SIGGRAPH 99 Electronic art and animation catalog. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/312379.312877.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
Hirano, Yoshihisa. "Stray sheep." In ACM SIGGRAPH 99 Electronic art and animation catalog. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/312379.313089.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5
Draves, Scott. "Electric sheep." In ACM SIGGRAPH 2007 computer animation festival. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1281740.1281742.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6
Draves, Scott. "Electric Sheep." In ACM SIGGRAPH 2004 Art gallery. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1185884.1185975.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7
Mentor, Gottfried. "Oh sheep!" In SIGGRAPH Asia 2012 Computer Animation Festival. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2407603.2407635.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8
Wang, Jiewen, Olivia Hsieh, Jack Gale, Sienna Xin Sun, and Sang-won Leigh. "Latent Sheep Dreaming:." In DIS '20: Designing Interactive Systems Conference 2020. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3393914.3395837.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9
Lederrey, Gael, and Robert West. "When Sheep Shop." In the 2018 World Wide Web Conference. New York, New York, USA: ACM Press, 2018. http://dx.doi.org/10.1145/3178876.3186160.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Koblin, Aaron Michael. "The sheep market." In Proceeding of the seventh ACM conference. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1640233.1640348.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Звіти організацій з теми "Sheep Physiology":

1
Morrical, Daniel G. Sheep Research Flock. Ames: Iowa State University, Digital Repository, 2003. http://dx.doi.org/10.31274/farmprogressreports-180814-633.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2
McMahon, Chris. Physiology of ejaculation. BJUI Knowledge, October 2019. http://dx.doi.org/10.18591/bjuik.0456.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3
Morrical, Daniel G., and L. James Secor. McNay Sheep Flock Production Parameters. Ames: Iowa State University, Digital Repository, 2006. http://dx.doi.org/10.31274/farmprogressreports-180814-585.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4
Schommer, Timothy J., and Melanie M. Woolever. A review of disease related conflicts between domestic sheep and goats and bighorn sheep. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2008. http://dx.doi.org/10.2737/rmrs-gtr-209.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5
Forger, Daniel. Modeling the Physiology of Circadian Timekeeping. Fort Belvoir, VA: Defense Technical Information Center, August 2011. http://dx.doi.org/10.21236/ada564079.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6
Chan, Lewis, and Thomas King. Physiology of micturition and bladder controls. BJUI Knowledge, October 2019. http://dx.doi.org/10.18591/bjuik.0034.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7
Hoover, W. H., and T. K. Miller. Rumen digestive physiology and microbial ecology. West Virginia University Agricultural Experiment Station, January 1992. http://dx.doi.org/10.33915/agnic.708t.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8
Hogden, J., G. Papcun, I. Zlokarnik, and D. Nix. Analysis of wolves and sheep. Final report. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/521574.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9
Zhao, Xia, Suneel Onteru, Max F. Rothschild, and Dorian J. Garrick. Causative Gene Discovery for Sheep Inherited Disorders. Ames (Iowa): Iowa State University, January 2011. http://dx.doi.org/10.31274/ans_air-180814-678.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10
Young, L., and C. Yde. Ural-tweed bighorn sheep wildlife mitigation project. Test accounts, June 1990. http://dx.doi.org/10.2172/6536405.
Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

До бібліографії

Будь ласка, вимкніть ваш блокувальник реклами

Adblock logo Adblock logo Adblock logo

"Grafiati" – це незалежний сервіс, що забезпечує унікальну якість оформлення бібліографічних посилань. Ви можете користуватися нашим сайтом безоплатно, дозволивши показ реклами, або оформити передплату.

Передплатити