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2013

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Articles 1021 - 1050 of 1169

Full-Text Articles in Animal Sciences

Comparative Study On Muscle Nutritional Composition Of Juvenile Bighead Carp (Aristichthys Nobilis) And Paddlefish (Polyodon Spathula) Fed Live Feed, Pei Song Shi, Qin Wang, Yu Ting Zhu, Qian Hong Gu, Bang Xi Xiong Jan 2013

Comparative Study On Muscle Nutritional Composition Of Juvenile Bighead Carp (Aristichthys Nobilis) And Paddlefish (Polyodon Spathula) Fed Live Feed, Pei Song Shi, Qin Wang, Yu Ting Zhu, Qian Hong Gu, Bang Xi Xiong

Turkish Journal of Zoology

The contents of the proximate composition of amino acids and fatty acids in the muscle of juvenile bighead carp (Aristichthys nobilis) and paddlefish (Polyodon spathula) that were fed with live feed for 60 days were assessed in this investigation. The moisture, crude protein, and crude ash contents of bighead carp muscle were slightly higher than those of paddlefish (P > 0.05). The crude fat content of paddlefish muscle was significantly higher than that of bighead carp (P < 0.01). Seventeen amino acids were detected in the muscle of both bighead carp and paddlefish. The total concentrations of amino acids (TAAs), essential amino acids (EAAs), and delicious amino acids (DAAs) in the muscle of bighead carp were higher than in those of paddlefish. Fifteen fatty acids were detected in both bighead carp and paddlefish muscles, including 5 saturated fatty acids (SFAs), 4 monounsaturated fatty acids (MUFAs), and 6 polyunsaturated fatty acids (PUFAs). The concentrations of muscle \sum SFAs, \sum MUFAs, \sum PUFAs, \sum UFAs, \sum SFAs/\sum UFAs, \sum n-6 PUFAs, \sum n-3 PUFAs, eicosapentaenoic acid (EPA), EPA + docosahexenoic acid (DHA), essential fatty acids (EFAs), and half-essential fatty acids (HEFAs) in bighead carp were significantly lower than those in paddlefish (P < 0.01). In addition, bighead carp possessed significantly lower muscle \sum n-6 PUFAs/\sum n-3 PUFAs content than paddlefish did (P < 0.05). Muscle DHA content of bighead carp was higher than that of paddlefish (P < 0.05).


First Record Of The Schizomid Stenochrus Portoricensis (Schizomida: Hubbardiidae) In Poland, With Dna Barcode Data, Krzysztof Zawierucha, Pawel Szymkowiak, Miroslawa Dabert, Mark Stephen Harvey Jan 2013

First Record Of The Schizomid Stenochrus Portoricensis (Schizomida: Hubbardiidae) In Poland, With Dna Barcode Data, Krzysztof Zawierucha, Pawel Szymkowiak, Miroslawa Dabert, Mark Stephen Harvey

Turkish Journal of Zoology

Several specimens of the tropical schizomid Stenochrus portoricensis Chamberlin, 1922 (family Hubbardiidae) were found in the Poznan Palm House, representing the first record of micro-whip scorpions (Schizomida) from Poland. Stenochrus portoricensis is an alien species in temperate climates, and has been accidentally introduced to greenhouses via potted plants. Its parthenogenetic lifestyle allows for the easy transfer of populations to new locations and the successful founding of new colonies. New DNA sequence data for Stenochrus portoricensis are presented, which comprise a fragment of the cytochrome c oxidase subunit I gene (DNA barcode sequence) from mitochondrial DNA, and a fragment of the …


Preliminary Study On Acropora (Scleractinia: Astrocoeniina: Acroporidae) Of The Persian Gulf, With Emphasis On The North And Northeastern Areas, Mohammadreza Rahmani, Hassan Rahimian Jan 2013

Preliminary Study On Acropora (Scleractinia: Astrocoeniina: Acroporidae) Of The Persian Gulf, With Emphasis On The North And Northeastern Areas, Mohammadreza Rahmani, Hassan Rahimian

Turkish Journal of Zoology

Due to a lack of adequate taxonomic information on Acropora Oken, 1815 species in the Persian Gulf, especially those inhabiting the coasts of the northern and northeastern areas, an appraisal of the diversity of this genus required comprehensive and careful examination of a large number of specimens. To satisfy such a need, 10-15 cm pieces of more than 1100 colonies of staghorn corals were collected from the subtidal zones of different islands. The specimens were studied using both light stereo and scanning electron microscopes and were identified with regional and global keys. During the study, 9 species of Acropora were …


Two New Records For The Polychaeta Fauna Of The Sea Of Marmara: Laubieriellus Salzi And Spiophanes Afer (Polychaeta: Spionidae), Ertan Dağli Jan 2013

Two New Records For The Polychaeta Fauna Of The Sea Of Marmara: Laubieriellus Salzi And Spiophanes Afer (Polychaeta: Spionidae), Ertan Dağli

Turkish Journal of Zoology

The present study deals with the first records of Laubieriellus salzi and Spiophanes afer in the Sea of Marmara. They were collected from Mytilus galloprovincialis, Zostera marina, sand, and shell fragments substrate at depths ranging from 0.2 to 5 m in November 2010. This study gives more information regarding the morphological and distributional features of these species.


Histopathological Observations In Neogobius Bathybius (Actinopterygii: Gobiidae) Infected By Dichelyne Minutus (Nematoda: Cucullanidae) In The Caspian Sea, Iran, Samaneh Rezaei, Jamileh Pazooki, Issa Sharifpour, Mahmood Masoumian Jan 2013

Histopathological Observations In Neogobius Bathybius (Actinopterygii: Gobiidae) Infected By Dichelyne Minutus (Nematoda: Cucullanidae) In The Caspian Sea, Iran, Samaneh Rezaei, Jamileh Pazooki, Issa Sharifpour, Mahmood Masoumian

Turkish Journal of Zoology

Dichelyne minutus (Rudolphi, 1819) is a typical and widespread parasite of Gobiidae. In this research, histopathological changes in the intestinal wall of Neogobius bathybius (Kessler) (Actinopterygii: Gobiidae) due to infection caused by D. minutus were studied. The most heavily parasitized regions were excised for microscopic studies. Cross sections revealed different aspects of tissue defensive reactions due to the free movement of nematodes among the gut contents. Mucosal erosion, increased number of goblet cells, hyperplastic changes in the epithelial cells, and remarkable hyperplasia that formed nodule-like structures with hyperemia were observed in the submucosa. Focal necrosis and a thickened muscle layer …


Length-Weight Relationships Of 22 Fish Species From The Gallipoli Peninsula And Dardanelles (Northeastern Mediterranean, Turkey), Özgür Cengi̇z Jan 2013

Length-Weight Relationships Of 22 Fish Species From The Gallipoli Peninsula And Dardanelles (Northeastern Mediterranean, Turkey), Özgür Cengi̇z

Turkish Journal of Zoology

Length-weight relationships are presented for 22 fish species from the Gallipoli Peninsula and Dardanelles between September 2006 and October 2009. The b values ranged between 2.78 and 3.28. All species' length-weight relationships were highly significant (P < 0.001).


New Records And Distributional Data On Sarcophaga (Heteronychia) (Diptera: Sarcophagidae) From Turkey, Gamze Pekbey, Rüstem Hayat Jan 2013

New Records And Distributional Data On Sarcophaga (Heteronychia) (Diptera: Sarcophagidae) From Turkey, Gamze Pekbey, Rüstem Hayat

Turkish Journal of Zoology

Sixteen species belonging to subgenus Heteronychia Brauer & Bergenstamm, 1889 of Sarcophaga Meigen, 1826 were recorded from the Bayburt, Erzincan, and Erzurum provinces of Turkey during 2008-2010. Five of these species, Sarcophaga (Heteronychia) armeniaca (Rohdendorf, 1937), S. (H.) bulgarica (Enderlein, 1936), S. (H.) clarahenae (Lehrer, 1999), S. (H.) monspellensia Böttcher, 1913, and S. (H.) recta (Rohdendorf, 1937) represent new records for the Turkish fauna. With these new records, the number of species belonging to subgenus Heteronychia known from Turkey has been increased from 19 to 24.


Faunistic Review And Description Of A New Species Of Pselaphinae (Coleoptera: Staphylinidae) From The Strandzha Mountains (Bulgaria And Turkey), Rostislav Bekchiev Jan 2013

Faunistic Review And Description Of A New Species Of Pselaphinae (Coleoptera: Staphylinidae) From The Strandzha Mountains (Bulgaria And Turkey), Rostislav Bekchiev

Turkish Journal of Zoology

During a 3-year faunistic survey in the Strandzha Mountains and along the Black Sea coast, a total of 44 species of Pselaphinae were recorded, 40 in the Bulgarian part and 30 in the Turkish part of this mountain range. Bibloporus variicolor Reitter, 1882 is reported to occur in the Balkan Peninsula for the first time; the genus Centrotoma Hayden, 1849 and 3 species (Euplectus brunneus Grimmer, 1841, Batrisus formicarius Aubé, 1833, and Centrotoma lucifuga Hayden, 1849) are new for the Turkish fauna; and 4 species (Bibloplectus pusillus (Denny, 1825), Bibloplectus hungaricus Besuchet, 1955, Bythinus balkanicus Reitter, 1885, and Brachygluta tibialis …


Brackish Water Snails From Qi'ao-Dan'gan Island In The Pearl River Estuary, China, Yafang Li, Runlin Xu Jan 2013

Brackish Water Snails From Qi'ao-Dan'gan Island In The Pearl River Estuary, China, Yafang Li, Runlin Xu

Turkish Journal of Zoology

Eight brackish water snails belonging to 5 families are described. All the samples were taken from 3 different types of water body. They were taken from 1 littoral of an artificial brackish lake, 1 intertidal zone of a brackish tidal river, and 3 mangrove swamps on Qi'ao Island in the Pearl River estuary, Guangdong Province, southern China. Assiminea estuarina Habe, 1946 and Iravadia (Fairbankia) cochinchinensis Bavey & Dautzenberg, 1910 are new records for China. Cerithidea sinensis Philippi, 1848 was found in a tropical zone for the first time. The finding of Sphaerassiminea brevicula (Pfeiffer, 1855) provided evidence that this species …


A Contribution On The Subfamilies Helconinae, Homolobinae, Macrocentrinae, Meteorinae, And Orgilinae (Hymenoptera: Braconidae) Of Southeastern Anatolia With New Records From Other Parts Of Turkey, Ahmet Beyarslan, Celaletti̇n Gözüaçik, İnanç Özgen Jan 2013

A Contribution On The Subfamilies Helconinae, Homolobinae, Macrocentrinae, Meteorinae, And Orgilinae (Hymenoptera: Braconidae) Of Southeastern Anatolia With New Records From Other Parts Of Turkey, Ahmet Beyarslan, Celaletti̇n Gözüaçik, İnanç Özgen

Turkish Journal of Zoology

This study was carried out in order to determine the species of the subfamilies Homolobinae, Macrocentrinae, Meteorinae, and Orgilinae in southeastern Anatolia, Turkey. Malaise and light traps and sweeping nets were used to obtain adult specimens from various habitats in the study area during 2010 and 2011. The collected materials from southeastern Anatolia and from new localities of other regions were identified and a total of 11 species from 5 genera determined, of which the species Diospilus morosus Reinhard is a new record for southeastern Anatolia. All species are new records on the basis of provinces of Turkey. The distributions …


New Records Of Miltogramminae And Paramacronychiinae (Diptera: Sarcophagidae) From Turkey, Gamze Pekbey, Rüstem Hayat Jan 2013

New Records Of Miltogramminae And Paramacronychiinae (Diptera: Sarcophagidae) From Turkey, Gamze Pekbey, Rüstem Hayat

Turkish Journal of Zoology

This study was conducted in the Bayburt, Erzincan, and Erzurum provinces of Turkey during 2009 and 2010. A total of 10 species in 6 genera from the subfamilies Miltogramminae (4 species in 2 genera) and Paramacronychiinae (6 species in 4 genera) were determined. The genera Angiometopa Brauer and Bergenstamm, 1889 and Brachicoma Rondani, 1856 and the species Angiometopa falleni Pape, 1986, Brachicoma devia (Fallén, 1820), Macronychia polyodon (Meigen, 1824), and M. striginervis (Zetterstedt, 1838) are recorded for the first time from Turkey. Photographs or illustrations of the new records are provided.


Additional Contributions To The Opiinae Fauna Of Turkey (Hymenoptera: Braconidae), Maximilian Fischer, Ahmet Beyarslan Jan 2013

Additional Contributions To The Opiinae Fauna Of Turkey (Hymenoptera: Braconidae), Maximilian Fischer, Ahmet Beyarslan

Turkish Journal of Zoology

This study was carried out in order to determine species of the subfamily Opiinae in Turkey. The collected materials from new localities were identified, and faunistic records of 63 species belonging to 3 genera of Opiinae were given. Ten of these species are reported as new to Turkey. The presented article covers synonyms, zoogeographical region'(s), hosts, host plants of host species, and parasitoid data for the species.


Seasonal Composition And Population Density Of Zooplankton In Lake Karaboğaz From The Kızılırmak Delta (Samsun, Turkey), Ertunç Gündüz, Yasemi̇n Saygi, Fatma Yildiz Demi̇rkalp, Seli̇m Süalp Çağlar, Si̇bel Atasağun, Sabri̇ Kilinç Jan 2013

Seasonal Composition And Population Density Of Zooplankton In Lake Karaboğaz From The Kızılırmak Delta (Samsun, Turkey), Ertunç Gündüz, Yasemi̇n Saygi, Fatma Yildiz Demi̇rkalp, Seli̇m Süalp Çağlar, Si̇bel Atasağun, Sabri̇ Kilinç

Turkish Journal of Zoology

Zooplankton composition and abundance were investigated seasonally at 6 sites in Lake Karaboğaz in relation to some physicochemical conditions. A total of 63 taxa were identified, among them 51 species of rotifers, 8 cladocerans, and 4 copepods. Rotifera represented the predominant component (79% of the total community), followed by nauplii, cladocerans, and copepods (15%, 5%, and 1%, respectively). The average total zooplankton abundance ranged from 9603 to 22,968 ind/m^3. The maximum and the minimum densities were measured in June and August of 2009, respectively. Of the identified zooplankton, 39 taxa were species with a low frequency in the lake. Among …


Diet And Habitat Use Of The Endangered Persian Leopard (Panthera Pardus Saxicolor) In Northeastern Iran, Mohammad Taghdisi, Alireza Mohammadi, Elham Nourani, Shirko Shokri, Ali Rezaei, Mohammad Kaboli Jan 2013

Diet And Habitat Use Of The Endangered Persian Leopard (Panthera Pardus Saxicolor) In Northeastern Iran, Mohammad Taghdisi, Alireza Mohammadi, Elham Nourani, Shirko Shokri, Ali Rezaei, Mohammad Kaboli

Turkish Journal of Zoology

A 2-year study of the food habits of the Persian leopard was conducted in Sarigol National Park in northeastern Iran, North Khorasan Province. Based on an analysis of 52 leopard scats, the principal prey was wild sheep (Ovis orientalis: prey frequency of occurrence = 61.5%; prey relative frequency of occurrence = 47.05%; relative biomass = 53.96%), followed by wild pig (Sus scrofa: frequency = 23.07%; relative frequency = 17.64%; relative biomass = 25.38%) and wild goat (Capra aegagrus: frequency = 13.46%; relative frequency = 10.29%; relative biomass = 6.64%). The high proportion of medium- and large-size prey in leopard diet …


A New Barrussus Roewer, 1928 (Solifugae: Karschiidae) From Southern Turkey, Ayşegül Karataş, Müni̇r Uçak Jan 2013

A New Barrussus Roewer, 1928 (Solifugae: Karschiidae) From Southern Turkey, Ayşegül Karataş, Müni̇r Uçak

Turkish Journal of Zoology

A new species of Barrussus, Barrussus telescopus sp. nov., is described from the Bolkar Mountains in southern Turkey. Males have an extremely elongated and bar-shaped ocular tubercule extended anteriorly between their eyes, which is the longest projecting ocular tubercule among all known males of Barrussus. The ocular tubercule of females has a short conical projection. Cheliceral movable fingers of type specimens have 5 anteriorly situated small teeth. Males have club-shaped ctenidia on the 4th and blunt-ended tubular ctenidia on the 5th opisthosomal sternites. The female has no ctenidia on its 4th opisthosomal sternite, with ctenidia on the 5th opisthosomal sternite …


Presence Of Sphedanolestes Sanguineus (Fabricius, 1794) In Turkey, Followed By An Annotated Checklist Of Reduviidae (Hemiptera: Heteroptera), Ahmet Dursun, Ali̇ Salur Jan 2013

Presence Of Sphedanolestes Sanguineus (Fabricius, 1794) In Turkey, Followed By An Annotated Checklist Of Reduviidae (Hemiptera: Heteroptera), Ahmet Dursun, Ali̇ Salur

Turkish Journal of Zoology

In this paper, the authors report the discovery of Sphedanolestes sanguineus (Fabricius, 1794) in Turkey, a new finding for Asian fauna, and give an annotated checklist of Reduviidae (Hemiptera: Heteroptera) for this country. Stenolemus novaki Horváth, 1888, Holotrichius apterus Jakovlev, 1879, Holotrichius denudatus A. Costa, 1842, Holotrichius rotundatus Stål, 1874, Rhynocoris annulatus (Linnaeus, 1758), Rhynocoris transitus Hoberlandt, 1952, and Pygolampis bidentata (Goeze, 1778) are little known species from Turkey. Furthermore, Stenolemus novaki is recorded for the first time from Marmara and central Anatolia, and Pygolampis bidentata is recorded for the first time in the eastern Black Sea region. A revised …


Overwinter Mortality Of Sympatric Juvenile Bluegill And Yellow Perch In Mid-Temperate Sandhill Lakes, Nebraska, U.S.A, Jeffrey C. Jolley, Mark A. Kaemingk, David W. Willis, Richard S. Holland Jan 2013

Overwinter Mortality Of Sympatric Juvenile Bluegill And Yellow Perch In Mid-Temperate Sandhill Lakes, Nebraska, U.S.A, Jeffrey C. Jolley, Mark A. Kaemingk, David W. Willis, Richard S. Holland

Natural Resource Management Faculty Publications

Substantial mortality can occur in age-0 fish populations during their first year of life, especially in winter; this can potentially influence overall recruitment into the adult population. As such, we compared relative abundances between fall and spring catches of sympatric juvenile bluegill Lepomis macrochirus Rafinesque and yellow perch Perca flavescens (Mitchill) to evaluate the magnitude of overwinter mortality across locations (five lakes for two years) and through time (one lake for six years). In addition, we compared both quantile-quantile and increment plots, based on length-frequency histograms from fall- and spring-caught cohorts from 2004 to 2010, to determine if mortality was …


Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia Jan 2013

Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia

LSU Master's Theses

Six insulin sensitive and six insensitive mares were used in a replicated 3 x 3 Latin square design to determine the pituitary hormonal responses (compared to vehicle) to sulpiride and thyrotropin-releasing hormone (TRH), two compounds commonly used to diagnose pituitary pars intermedia dysfunction (PPID) in horses. Mares were classified as insulin sensitive or insensitive by their previous glucose responses to direct injection of human recombinant insulin. Treatment days were February 25 and March 10 and 24, 2012. Treatments were sulpiride (racemic mixture, 0.01 mg/kg BW), TRH (0.002 mg/kg BW), and vehicle (saline, 0.01 mL/kg BW) administered intravenously. Blood samples were …


The Use Of Duddingtonia Flagrans For Gastrointestinal Parasitic Nematode Control In Feces Of Exotic Artiodactylids At Disney's Animal Kingdom®, Jenna Terry Jan 2013

The Use Of Duddingtonia Flagrans For Gastrointestinal Parasitic Nematode Control In Feces Of Exotic Artiodactylids At Disney's Animal Kingdom®, Jenna Terry

LSU Master's Theses

Gastrointestinal nematodes (GIN) are parasites of major concern for domestic and exotic ruminant species around the world. In the past, zoological facilities used anthelmintics as their primary control method. Challenges in accurate dosing and administration of anthelmintics to exotic hoofstock contributed to the development of resistant nematode populations in zoological settings. The historic dependency on anthelmintics to control GIN populations is no longer an option. Biological alternatives are urgently needed, in both exotic and domestic ruminants, in the war against resistance. One such alternative is the use of the nematophagous fungus, Duddingtonia flagrans. Three independent studies were conducted: A nine …


Vitrification Of Equine Expanded Blastocysts, Fabian Andres Diaz Jan 2013

Vitrification Of Equine Expanded Blastocysts, Fabian Andres Diaz

LSU Master's Theses

The cryopreservation of equine expanded blastocysts (>300 um) has been largely unsuccessful primarily due to the low permeability to cryoprotectants and the large size of the equine embryo. Mechanical alternatives may provide means to overcome the capsule barrier and the relative large embryo size. In this regard, multiple experiments were performed in this study to evaluate different approaches of capsule puncture and blastocoele fluid extraction with the objective to develop a cryopreservation protocol for Day 8 equine expanded blastocysts. In the first experiment, twenty-four Day 8 expanded blastocysts were exposed to standard equine embryo vitrification solutions following one- or …


Evaluation Of 54 Years Of Louisiana Bull Testing, And Snp Affecting Growth And Performance Of Yearling Bulls On A Forage Performance Bull Test, Tabitha Howard Jan 2013

Evaluation Of 54 Years Of Louisiana Bull Testing, And Snp Affecting Growth And Performance Of Yearling Bulls On A Forage Performance Bull Test, Tabitha Howard

LSU Master's Theses

The first objective of these two studies was to evaluate genetic trends for bulls that have comprised the LSU AgCenter Dean Lee performance bull test for the past 55 years. Data included birth weight (BW), initial weight, 112-day weight, average daily gain (ADG), adjusted yearling weight, and scrotal circumference (SC), on 7,488 yearling bulls of 34 breeds on 112d of test for the last 55 years. The top 4 represented bull breeds with greater than 500 animals (Angus, Charolais, Hereford, and Simmental) were included in this analysis. Analyses revealed that growth traits for all bulls regardless of breed demonstrated a …


Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson Jan 2013

Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson

LSU Master's Theses

Weaning, one of the first major stressors encountered by the calf, has a negative effect on the immune system and increases the likelihood of infection of novel pathogens such as those that cause bovine respiratory disease. Fenceline contact at weaning has been shown to reduce the stress on the calf during the time following maternal separation. Preconditioning programs have been shown to reduce feedlot morbidity and mortality. Combining these two management practices could reduce the length of time calves need to be held in a preconditioning program. A multi-year study was conducted to evaluate if fenceline weaning will allow for …


Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier Jan 2013

Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier

LSU Master's Theses

Eighteen neonatal Holstein bull calves (38.85 ± 4.71 kg) were assigned to one of two treatments at birth to determine the effect of feeding time on growth, nutrient intake, metabolic hormone secretion, and energy metabolism. Regularly fed calves (n = 9) were fed MR daily at 0630 h, and irregularly fed calves (n = 9) at 1030, 0800, 0630, 0830, 0530, 0930, and 0730 Monday through Sunday. Body weights were measured weekly from birth to 9 weeks. Water intake, fecal scores, and starter intake were measured daily. Serial blood collections were conducted at 2, 4, 6, and 8 weeks for …


Influence Of "Added" Whey Protein Isolate On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Luis Alfonso Vargas Lopez Jan 2013

Influence Of "Added" Whey Protein Isolate On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Luis Alfonso Vargas Lopez

LSU Master's Theses

Consumers are becoming conscious of their diet, increasing protein intake and avoiding carbohydrates and fats. Whey proteins have branch chain amino acids responsible for muscle building. Whey protein isolate (WPI) contains more than 90% protein. The effect of incremental addition of WPI on probiotic characteristics of pure cultures and cultures in yogurt and yogurt characteristics are not known. The hypothesis was that “added” WPI will influence the characteristics of yogurt culture bacteria in pure form and in yogurt. The objectives were: to determine the influence of added WPI on (1) acid and bile tolerance, growth and protease activity of pure …


Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song Jan 2013

Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song

LSU Master's Theses

Commercial yogurt powder has to go through drying process which kills the yogurt culture, so the health benefit of the yogurt culture bacteria are lost. Also, upon reconstitution commercial yogurt powder does not taste like yogurt, it is sour and off flavored. The hypothesis of this study was that yogurt cultured milk powder would have better culture bacterial counts, better physico-chemical and sensory characteristics than commercial yogurt powder currently available. Commercial yogurt powder (CYP) was the control and yogurt cultured milk powder (YCMP) was the treatment. Freeze-dried yogurt starter culture (Lactobacillus bulgaricus and Streptococcus thermophilus at ratio 1:1) was added …


Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni Jan 2013

Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni

LSU Master's Theses

There has been thorough documentation to support the role of dopamine in the control of prolactin production and secretion in various mammalian species, including the horse. However, there is evidence that other factors are involved in prolactin secretion. Seven experiments were conducted to assess factors that potentially might affect prolactin secretion in the horse. The first two experiments were conducted (separately) to test whether arginine vasopressin (AVP) or vasoactive intestinal polypeptide (VIP) affected prolactin secretion. In each experiment, AVP or VIP was administered intravenously and blood samples were collected to determine the effect on prolactin secretion. Neither peptide produced any …


Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas Jan 2013

Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas

LSU Master's Theses

Lactose sugar is a source of energy for Lactic Acid Bacteria (LAB) in dairy fermented products. Enrichment of yogurt with lactose addition may increase growth and viability of the yogurt starter culture (Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus) and enhance yogurt physico-chemical and sensory attributes. The objectives of this study were: to determine the influence of added lactose on (1) acid and bile tolerance of yogurt starter culture Streptococcus thermophilus ST-M5 and Lactobacillus bulgaricus LB-12, (2) the final lactose content of yogurt during its shelf life, (3) the physico-chemical characteristics of yogurt during shelf life, (4) the growth of …


A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey Jan 2013

A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey

LSU Master's Theses

The objective of this study is to evaluate the association of single nucleotide polymorphisms with growth, performance, and carcass quality and composition characteristics in a population of cattle consisting of multigenerational Angus sired calves and modern characteristic Charolais sired calves. A total of 132 calves were evaluated. Due to a limited sample population statistical difference was set at p ˂ 0.05 and statistical trends were set at p ˂ 0.1. Mean birth weights were significantly higher for Charolais sired calves as compared to Angus sired calves. Significant differences were observed between the two breed types for mean weaning weights with …


Analysis Of Sources Of Variation And Relationships Among Sow Productivity Traits, Richard L. Cutshaw Jan 2013

Analysis Of Sources Of Variation And Relationships Among Sow Productivity Traits, Richard L. Cutshaw

Open Access Theses

The swine industry has witnessed major changes in the past three decades in terms of selection tools and implementation of effective selection. As the pork industry continues to consolidate, it is increasingly important to be able to accurately predict and direct future performance toward increased overall profitability. Overall, sow productivity greatly affects a pork producer's ability to be profitable in the industry and have sufficient knowledge of production levels to improve the likelihood of remaining profitable into the future.

The relationships among sow productivity traits including total number born, litter birth weight, number weaned, preweaning survival, mean piglet birth weight, …


Effect Of Ergot Alkaloids On Bovine Foregut Vasculature, Nutrient Absorption, And Epithelial Barrier Function, Andrew P. Foote Jan 2013

Effect Of Ergot Alkaloids On Bovine Foregut Vasculature, Nutrient Absorption, And Epithelial Barrier Function, Andrew P. Foote

Theses and Dissertations--Animal and Food Sciences

Ergot alkaloids present in endophyte-infected (E+) tall fescue are thought to be the causative agent of fescue toxicosis, a syndrome affecting cattle in the eastern United States. Many of the observed signs of fescue toxicosis are thought to be attributed to peripheral vasoconstriction; however, there are data indicating that ergot alkaloids can alter blood flow to the gut. An experiment was conducted using right ruminal artery and vein collected from heifers shortly after slaughter. Vessels were mounted in a multi-myograph to determine the vasoconstrictive potentials of ergot alkaloids present in E+ tall fescue. Results indicated ergot alkaloids have the potential …