Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 22 for “"in ovo"”.
-
In ovo supplementation of Primalac and the effects on performance and immune response of broilers
… microorganisms capable of positively impacting the host by improving the natural gut microbial balance and promoting animal health. In ovo technology represents one means to administer probiotics and promote early colonization of beneficial bacteria for stimulating intestinal and immune …
-
In ovo and feed application of probiotics or synbiotics and response of broiler chicks to post-hatch necrotic enteritis
… broiler chicks are exposed to microbes that begin colonizing the gut, including environmental pathogens. One of the costliest enteric diseases in broiler production is necrotic enteritis (NE), caused by the ubiquitous opportunistic bacteria Clostridium perfringens (CP). With the worldwide …
-
The avian maternal environment: Its influence on the physiological mechanisms contributing to progeny production efficiency in chicken meat birds
Alterations to the maternal and subsequent in-ovo environment during embryonic development, can lead to permanent phenotypic alterations, a phenomenon termed developmental programming. Developmental programming has enormous potential in the chicken meat industry due to meat chickens now spend ~40% …
-
Antiviral potential of hadjod (Cissus quadrangularis) extract against newcastle disease virus.
… contagious viral disease that has a devastating global impact on the poultry industry. Ethanol (EtOH) crude extract from the stem of Cissus quadrangularis (CQL) was prepared and tested against Newcastle Disease Virus (NDV) replication using an in- ovo assay in embryonic chickens. Cissus …
-
Temporal and spatial controls of cell fate specification in the cerebellum
The domain of the developing cerebellum in dorsal rhombomere 1 is specified by signals from two adjacent organising centres, the midbrain-hindbrain boundary (isthmus) and the roof plate of the fourth ventricle. Two major precursor pools give rise to all the cells of the cerebellum: the ventricular …
-
Development of the chick chorioallantoic membrane (CAM) xenograft model to study metastasis and angiogenesis in autophagy deficient osteosarcoma cells
… is the most common primary malignant bone cancer in children. Despite the improvement in multiagent chemotherapy, 5-year survival rate for metastatic OS is only 20% to 30%. One of the main reasons for failure in therapy is due to the activation of autophagy in metastasis and angiogenesis, leading …
-
THE EFFECTS OF TRICHLOROETHYLENE ON HEART DEVELOPMENT
… TRI; C2HCl3) is an organic solvent used as an industrial degreasing agent. Due to its widespread use and volatile nature, TCE is a common environmental contaminant. Trichloroethylene exposure has been implicated in the etiology of heart defects in human populations and animal models. Recent …
-
Outlining a balance-point model of homeostasis in the small intestine of broiler chickens
Since the removal of in feed antibiotics in the past few years commercial poultry production is especially sensitive to the health of the small intestine. Healthy small intestines balance nutrient absorption and defensive barrier functions to ensure the chicken is able to meet the whole-body …
-
The role of pax genes in vertebrate segmentation
Pax genes are involved in a range of processes in the developing embryo. Pax3 and Pax7 in particular are associated with the paraxial mesoderm, especially the development of the myogenic lineage. However, recent studies have suggested that Pax3 and Pax7 may have earlier, morphogenetic roles in the …
-
DEVELOPING STRATEGIES TO CONTROL NECROTIC ENTERITIS IN BROILER CHICKENS
… enteritis (NE) caused by Clostridium perfringens (CP) remains a continuous challenge worldwide in the broiler chicken industry. Therefore, the objective of this thesis was to develop effective control strategies against NE. After the literature review of NE in Chapter 1, the development of …
-
Immunostimulatory effects and delivery of oligodeoxynucleotides containing CpG motifs (CpG-ODN) in neonatal broiler chickens
Oligodeoxynucleotides containing CpG motifs (CpG-ODN) have been shown to stimulate the innate immune system against a variety of bacterial, viral, and protozoan infections in a variety of vertebrate species. The objectives of this study were to investigate the immunostimulatory effect of CpG-ODN …
-
The Modulating Effects of Dietary Fiber and Short-Chain Fatty Acids on Enterocyte Differentiation, Maturation and Turkey Coronavirus Infection
In a number of mammalian species, susceptibility to enteric coronavirus infection has been shown to be age-related. This is thought to be associated with enterocyte maturation and receptor protein expression. One of the factors that can influence differentiation and maturation of enterocytes is the …
-
The Role of Wnt Signaling in Development of the Ophthalmic Trigeminal Placode.
… system. The development of the ophthalmic trigeminal (opV) placode, which gives rise only to sensory neurons of the ophthalmic lobe of the trigeminal ganglion, is a well-studied model of sensory neuron development. While key differentiation processes have been characterized at the tissue and …
-
ΙΔΙΟΤΗΤΕΣ ΤΩΝ ΘΕΣΕΩΝ ΔΕΣΜΕΥΣΗΣ L-ΓΛΟΥΤΑΜΙΚΟΥ L-ΑΣΠΑΡΤΙΚΟΥ ΚΑΙ ΚΑΙΝΙΚΟΥ ΟΞΕΟΣ ΕΓΚΕΦΑΛΟΥ ΠΤΗΝΩΝ. "ΣΥΜΒΟΛΗ ΣΤΗΝ ΑΠΟΜΟΝΩΣΗ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΜΟ ΤΩΝ ΘΕΣΕΩΝ ΔΕΣΜΕΥΣΗΣ L-ΓΛΟΥΤΑΜΙΚΟΥ ΟΞΕΟΣ"
THE BINDING KINETICS, PHARMACOLOGICAL PROPERTIES AND REGIONAL ONTOGENY OF L-GLUTAMATE, L-ASPARTATE AND KAINATE BINDING SITES HAVE BEEN STUDIED IN MEMBRANE PREPARATIONS OF CHICK BRAIN. ONE BINDING COMPONENT WAS FOUND FOR L-[3H]GLUTAMATE AND L-[3H] ASPARTATE WITH A KD VALUE OF 176 NM AND 204 …
-
The cellular and molecular investigation of Wnt/FZD signalling during spinal cord neurogenesis
Spinal cord development has been studied extensively and is a model for embryonic patterning and cell differentiation. These processes are governed by extracellular and intracellular signaling and require gene transcription. Wnt signaling has been shown to be involved in dorsal-ventral patterning …
-
Functional profiles of growth-related genes during embryogenesis and postnatal development of chicken and mouse skeletal muscle
Reverse-transcription polymerase chain reaction (RT-PCR) was performed to measure myostatin, follistatin, activin-B gene expressions during chicken embryonic development. Strong myostatin expression was found in the early chicken embryos (E 0, E 1) and the developmental expression pattern of …
-
Effects of embryonic exposure to androgen-active endocrine disrupting chemicals in Japanese quail
Endocrine disrupting chemicals (EDCs) are compounds that alter the production, secretion, action, and elimination of endogenous hormones. EDCs have been shown to be responsible for disrupting development, reproduction, immune function, behavior, and all other life functions mediated by hormones. In …
-
Development of the chick chorioallantoic membrane (CAM) model to assess tumour growth and drug response in osteosarcoma and bladder cancer
… for cancer patients with metastasis remains generally low, prompting research into understanding the different metastatic pathways and testing novel chemotherapeutical agents. While the traditional in vivo mouse models have been widely used in research, they are often expensive and time- …
-
Axogial communication mediated by soluble neuregulin-1 and bdnf
<p>During peripheral nervous system development, successful communication between axons and glial cells including Schwann cells in peripheral nervous system and oligodendrocytes in central nervous system, is required for the proper functions of both neurons and glia. Three types of …
-
Temporal and Spatial Assessment of PAHs in Water, Sediment, and Oysters as a Result of the Deepwater Horizon Oil Spill
… BP's Deepwater Horizon oil rig exploded leaking over 200 million gallons of crude oil into the Gulf of Mexico for 84 days. Exposure to oil-associated polycyclic aromatic hydrocarbons (PAHs) in the water and sediment could severely impact the aquatic organisms inhabiting the Gulf of Mexico …
Page 1 of 2