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Subject: Zoology × End date: 2015 × Thesis Type: Ph.D ×
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Now showing 1 - 9 of 16
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    In Vitro Effects of Anthelmintics on Histopathology of Some Nematodes of Sheep / GOAT
    (Department of Zoology College of Basic sciecne And Humanities PAU, Ludhiana, 1992) Kaur, Manpreet; Sood, M. L.
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    ThesisItemOpen Access
    Postanatal development of epididymis in murrah Buffalo
    (College of Basic Sciences & Humanities PAU, Ludhiana, 1999) Kaur, Gurpreet; Bilaspri, G. S
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    ThesisItemOpen Access
    In Vitro Maturation of follicular oocytes and fertilization in goat (Capra hircus)
    (Department of Zoology College of Basic Sciecnes and humanities PAU, Ludhiana, 1995) Cheema, satinder; Sidhu, K. S
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    ThesisItemOpen Access
    EFFECTS OF HEN EGG WHITE PROTEINS ON REPRODUCTION AND DEVELOPMENT OF RED FLOUR BEETLE (Tribolium castaneum)
    (PAU Ludhiana, 2010) Geetu Choudhary; R.K. Parshad
    The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera:Tenebrionidae) is a destructive pest of stored grains and it is renowned for adapting to various insecticides. The hen’s egg white proteins possess unique multifunctional properties including antimicrobial, antiviral, immunomodulatory and anticancer. Therefore, the present study was carried out to determine the insecticidal potential of hen’s egg white proteins to manage red flour beetle population. Protein samples obtained through salt fractionation (PPT-I and PPT-II) including whole egg white (WEW) were lyophilized. Different concentrations (2%, 3%, 4%, 5%, 10%) of each of the protein samples were tested separately and simultaneously by adding them to wheat flour and milk powder (75:25 w/w). The results indicated that mortality rate of the adult beetles was dependent on the type of treatment, concentration of protein samples and duration of feeding. WEW, PPT-I and PPT-II treatments delayed the emergence of developmental stages, reduced the fecundity rate, egg volume and reproductive effort of the female beetles. In multiple-choice feeding trials, beetles showed repellency towards the food containing PPT-I and PPT-II proteins. Marked abnormalities were observed in appearance and dimensions of the ovarioles and eggs which indicated that the hen’s egg white proteins caused considerable effect on the process of oogenesis. Scanning electron microscopic studies revealed changes in the structure of epithelial sheath cells of ovarioles probably caused due to resorption of ova in the beetles fed on PPT-II proteins. Higher resolution of the egg surface showed the presence of wrinkles or shrivelled appearance of the chorionic layer in PPT-I and PPT-II treated eggs and these deep folds and wrinkles were more conspicuous in the beetles fed on PPT-II proteins. PPT-II proteins appeared to be most effective among WEW, PPT-I and PPT-II samples in causing mortality and reduction of fecundity in T.castaneum.
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    ThesisItemOpen Access
    MUSCLE FATTY ACID PROFILES OF SOME WILD FISH SPECIES AND ENHANCEMENT OF OMEGA-3 FATTY ACIDS THROUGH DIETARY MANIPULATION IN Cyprinus carpio (Linn.)
    (PAU Ludhiana, 2012) Jyotika; H.S., Sehgal
    The study has been conducted on i) seasonal variations in muscle total lipid content (MTLC), fatty acid profiles and proximate composition of two wild fish species, Puntius conchonius (Hamilton-Buchanan) and P. sarana (Hamilton-Buchanan), to determine their nutritional status and ii) enhancement of omega-3 polyunsaturated fatty acids (PUFAs), considered vital for human health, through dietary manipulation in a cultured carp species, Cyprinus carpio (Linn.). Both the wild species were found to be rich in crude protein, which varied between 15.74% to 18.18% in P. conchonius and 15.15% to 18.04% in P. sarana during different seasons. Based on their MTLC (2.36% to 4.89%), both the species could be categorized as lean or low-fat fishes. However, the MTLC was higher and the moisture, ash and carbohydrate contents of the fishes were comparable with many other freshwater fish species. The fishes had good PUFA content. Omega-3 (n-3) PUFAs were 2.78% in P. sarana and 2.21% in P. conchonius. Total n-6 PUFAs were 4.56% in P. sarana and 4.20% in P .conchonius, and the values of n-3/n-6 ratio were 0.73 and 0.60 in P. sarana and P. conchonius, respectively. Linolenic acid formed 1.64% of the total n-3 PUFAs in P. sarana and 1.02% in P. conchonius. EPA constituted 0.31% in P. conchonius and 0.24% in P. sarana and DHA 0.75% in P. sarana and 0.69% in P.conchonius. Stearic acid was the dominant saturated fatty acid (SFA) forming 28.75% of the total SFAs in P. sarana and 28.10% in P. conchonius. The MTLC and n-3 PUFAs of C. carpio (Linn.), a cultured carp species could be enhanced through dietary manipulation. The MTLC could be increased from 1.44% in fish fed traditional diet with no flaxseed oil to 2.83% in fish fed 30% flaxseed oil diet. Similarly, the total n-3 PUFAs could be enhanced from 10.38% in fishes fed 0% flaxseed oil diet for 90 days to 18.67% in fishes fed 30% flaxseed oil diet for 60 days and 30% fish oil diet for 30 days.
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    Effect Of Dierary Protein And Lipid Levels On Growth, Protein Utilization And Biochemical Composition Of Carps
    (Punjab Agricultural University; Ludhiana, 2006) Kutty, Indu M.; Kamaldeep Kaur
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    ThesisItemOpen Access
    Histomorphometric and genotoxic studies in albino rats following sub-chronic exposure to arsenic
    (PAU, 2014) Mehta, Madhuri; Hundal, S.S.
    The present study was carried out to evaluate the histomorphometric and genotoxic effects of sodium arsenite at low doses on female rats. Forty eight mature female rats were divided into four groups; one group as control and three groups received sodium arsenite at the doses of 10, 30 and 50 μg/L dissolved in distilled water orally for 60 days. Half of the rats from each group were sacrificed after 30 days and the remaining after 60 days of treatment. Oral exposure of sodium arsenite results in disruption of estrous cycle with prolonged diestrous and metestrous phases. A significant decrease (P≤0.01) in the number of corpus lutea along with increased number of atretic follicles has been observed in treated ovaries after 30 and 60 days of treatment. The thickness of uterine myometrium and endometrium decreased significantly (P≤0.05-0.01) in treated rats. Histopathological observations of liver and kidney sections showed presence of pyknotic cells, infiltrations and increased glomerulus chamber spaces. The activities of antioxidant enzymes decreased significantly (P≤0.01) with an increase in the levels of lipid peroxidation, urea and creatinine in treated animals. The concentration of arsenic was high in treated as compared to control rats. Increased liver microsomal degranulation and bone marrow chromosomal aberration (chromatid gaps, fragmentation and breakage) in all the treated groups substantiates carcinogenic and mutagenic effects of sodium arsenite. It may be inferred that exposure to sodium arsenite at low doses disturbs the antioxidant/prooxidant ratio leading to a state of oxidative stress as evidenced through histological, biochemical and genotoxic parameters.
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    Eco-Taxonomy And Biology Of Terrestrial Earthworms Of North Indian States
    (Punjab Agricultural University; Ludhiana, 2004) Dhiman, Neena; Battish, S. K.
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    ThesisItemOpen Access
    Effect Of Neem (Azadirachta Indica A. Juss) Extracts On Growth And Reproduction Of Albino Mice
    (Punjab Agricultural University; Ludhiana, 2002) Puri, Anju; Hans, Bir