Animal Sciences Commons^™

Fish Oil And Barley Supplementation In Diets For Adult Dogs: Effects On Lipid And Protein Metabolism, Nutrient Digestibility, Fecal Quality, And Postprandial Glycemia, Maria Regina Cattai De Godoy

Theses and Dissertations--Animal and Food Sciences

Obesity is the most prevalent nutritional disorder encountered in small animal medicine. Problems related with obesity are the higher incidence of morbidity and mortality. Nutritional and physical activity interventions have been common strategies employed; however, they have shown low compliance rates. Because of it more attention has been given to the nutrient composition of diets. Using the canine model, three experiments were conducted to examine the effect of fish oil or barley on protein and lipid metabolism, as well as postprandial glycemia, and nutrient digestibility in mature and in young adult dogs.

In Exp. 1, seven female dogs were randomly …

Settlement And Growth Of Quagga Mussels (Dreissenia Rostriformis Bugensis Andrusov, 1897) In Lake Mead, Nevada-Arizona, Usa, Wai Hing Wong, Shawn Gerstenberger, Wen Baldwin, Bryan Moore

Environmental & Occupational Health Faculty Publications

Settlement and growth of quagga mussels Dreissena rostriformis bugensis were monitored in Lake Mead, NV, USA, where the first dreissenid occurrence was confirmed in the western United States. To measure the settlement rate of these invasive mussels, seven acrylonitrile butadiene styrene (ABS) pipes were attached to a line in shallow water (7.7 m below the surface) since November 23, 2007; eight ABS pipes were placed on another line in deep water (13.4 m below the surface) since January 3, 2008. Quagga mussels were sampled from these pipes on March 19, May 21, July 9, October 20, and December 19, 2008. …

Using The Judas Technique To Locate And Remove Wintertime Aggregations Of Invasive Common Carp, P. G. Bajer, Christopher J. Chizinski, P. W. Sorensen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Radio- and acoustic telemetry in three Midwestern lakes demonstrated that common carp, Cyprinus carpio L., aggregate as water temperatures descend below 10C. Particularly dense aggregations formed at temperatures <5 >C, and once located, these aggregations could be removed with an efficiency of up to 94% using seine nets. Carp aggregated just below the surface of the ice (approximately 1.5 m) and rarely descended to warmer waters, which extended down to 10 m. Although aggregations consistently formed close to shore, their locations could not be explained by temperature or dissolved oxygen. The aggregations also moved frequently, making radio-tagged fish invaluable to locate …

Mixed-Source Reintroductions Lead To Outbreeding Depression In Second-Generation Descendents Of A Native North American Fish, David D. Huff, Loren M. Miller, Christopher J. Chizinski, Bruce Vondracek

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Reintroductions are commonly employed to preserve intraspecific biodiversity in fragmented landscapes. However, reintroduced populations are frequently smaller and more geographically isolated than native populations. Mixing genetically, divergent sources are often proposed to attenuate potentially low genetic diversity in reintroduced populations that may result from small effective population sizes. However, a possible negative tradeoff for mixing sources is outbreeding depression in hybrid offspring. We examined the consequences of mixed-source reintroductions on several fitness surrogates at nine slimy sculpin (Cottus cognatus) reintroduction sites in south-east Minnesota. We inferred the relative fitness of each crosstype in the reintroduced populations by comparing …

Implications Of Community Concordance For Assessing Stream Integrity At Three Nested Spatial Scales In Minnesota, U.S.A., Christine L. Dolph, David D. Huff, Christopher J. Chizinski, Bruce Vondracek

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

1. Fish and invertebrate assemblage data collected from 670 stream sites in Minnesota (U.S.A.) were used to calculate concordance across three nested spatial scales (statewide, ecoregion and catchment). Predictive taxa richness models, calibrated using the same data, were used to evaluate whether concordant communities exhibited similar trends in human-induced taxa loss across all three scales. Finally, we evaluated the strength of the relationship between selected environmental variables and the composition of both assemblages at all three spatial scales.

2. Significant concordance between fish and invertebrate communities occurred at the statewide scale as well as in six of seven ecoregions and …

Breeding Bird Response To Partially Harvested Riparian Management Zones, Christopher J. Chizinski, Anna Peterson, Joann Hanowski, Charles R. Blinn, Bruce Vondracek, Gerald J. Niemi

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We compared avian communities among three timber harvesting treatments in 45-m wide even-age riparian management zones (RMZs) placed between upland clearcuts and along one side of first- or second-order streams in northern Minnesota, USA. The RMZs had three treatments: (1) unharvested, (2) intermediate residual basal area (RBA) (targeted goal 11.5m²/ha, realized 16.0m2/ha), and (3) low RBA (targeted goal 5.7m²/ha, realized 8.7m²/ha). Surveys were conducted one year pre-harvest and three consecutive years post-harvest. There was no change in species richness, diversity, or total abundance associated with harvest but there were shifts in the types of …

Adaptation Of Lambs To An Endophyte Infected Tall Fescue Seed Diet, Rachel Ann Rickly Zinner

Theses and Dissertations--Animal and Food Sciences

Ten wether lambs were used to determine the effects of ergovaline consumption from endophyte infected tall fescue, on nutrient utilization and metabolism. Lambs were fed a diet of 23% endophyte free tall fescue seed (E-) and 77% concentrate from d -14 to -1 (adaptation phase). On d 0, five lambs were switched to an endophyte infected seed diet (E+) where they remained through d 14. Nutrient digestibilities tended to increase from adaptation through the acute (d 1 to 4) to subacute (d 10 to 14) phases when E- was fed. E+ digestibilities were highest (P < 0.05) in the acute phase. Lambs fed E+ had higher rectal temperatures in the acute (P < 0.01) and subacute phases (P < 0.05). Fecal recovery of ergovaline increased as day of collection increased in the acute and subacute phases. Lysergic acid fecal recovery increased with day of collection in the acute phase, but no effect was found in the subacute phase. Serum enzyme analyses did not indicate tissue damage from alkaloid consumption. These results demonstrate lambs try to adapt to endophyte infected fescue seed consumption through increased nutrient digestibilities and increased ergovaline and lysergic acid excretion.

Análisis De Componentes Principales Para Peso Al Destete En Un Hato Cebú Comercial En Orocué Casanare, Camilo Andrés Muñoz Monroy, Olbar Sanchez Hernández

Zootecnia

Este estudio fue desarrollado en un hato de críaubicado en las sabanas del municipio de Orocué departamento del Casanare; donde se obtienen terneros para ceba resultado del apareamiento entre toros Brahman puros con vacas cebú comercial; se realizó para conocer si existe o norelación en alguna proporción entre: algunas características morfológicas como el puntaje de ubre y pezones, y fenotípicas como la condición corporal y el número de partos de la vaca con el peso al nacer y al destete del ternero. Como muestra se tomaron los partos correspondientes a los meses octubre a diciembre (n=150 partos), equivalentes aproximadamente al …

Widespread Survey Finds No Evidence Of Haplosporidium Nelsoni (Msx) In Gulf Of Mexico Oysters, Se Ford, J Paterno, E Scarpa, Na Stokes, Y Kim, Et Al.

VIMS Articles

The advent of molecular detection assays has provided a set of very sensitive tools for the detection of pathogens in marine organisms, but it has also raised problems of how to interpret positive signals that are not accompanied by visual confirmation. PCR-positive results have recently been reported for Haplosporidium nelsoni (MSX), a pathogen of the oyster Crassostrea virginica in 31 of 40 oysters from 6 sites in the Gulf of Mexico and the Caribbean Sea. Histological confirmation of the PCR results was not undertaken, and no haplosporidian has been reported from the numerous histological studies and surveys of oysters in …

Mercury And Selenium Bioaccumulation In The Stromatolite Community Of The Great Salt Lake, Utah, Usa, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

No abstract provided.

Assessment Of Genome Integrity With Array Cgh Of Cattle Transgenic Cell Lines Produced By Homologous Recombination And Somatic Cell Cloning, G. E. Liu, Y. Hou, J. M. Robl, Y. Kuroiwa, Zhongde Wang

Animal, Dairy, and Veterinary Science Faculty Publications

Transgenic cattle carrying multiple genomic modifications have been produced by serial rounds of somatic cell chromatin transfer (cloning) of sequentially genetically targeted somatic cells. However, cloning efficiency tends to decline with the increase of rounds of cloning. It is possible that multiple rounds of cloning compromise the genome integrity or/and introduce epigenetic errors in the resulting cell lines, rendering a decline in cloning. To test these possibilities, we performed 9 high density array Comparative Genomic Hybridization (CGH) experiments to test the genome integrity in 3 independent bovine transgenic cell lineages generated from genetic modification and cloning. Our plan included the …

Temperature Increase Effects On Sagebrush Ecosystem Forbs: Exprimental Evidence And Range Manager Perspectives, Hilary Louise Whitcomb

Green Canyon Environmental Research Area, Logan Utah

No abstract provided.

Histological Examination Of Testicular Cell Development And Apoptosis In The Ostrich Chick, Wei Lan, Ke-Mei Peng, Huazhen Liu, Hui Song, Yang Wang, Li Tang

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to observe the microstructure and ultrastructure of the testis, demonstrate testicular cell development and apoptosis, and elucidate regularity of development and apoptosis in ostrich chick testes. By employing light microscopy 3 obvious development characteristics were detected with ostrich age increasing: first, many primordial germ cells and a few spermatogonia were found while seminiferous tubule integrity was not evident in testes of 1-day-old ostrich chicks nor were primordial germ cells. In the 30-day-old ostrich chicks spermatogonia were completely differentiated, but very few primary spermatocytes were observed in testes at 45 days of age. Second, the …

Association Between Polymorphisms Of Cyp19, Cyp21, And Er1 Genes And Milk Production Traits In Black-And-White Cattle, Magdalena Jedrzejczak, Wilhelm Grzesiak, Iwona Szatkowska, Andrzej Dybus, Magdalena Muszynska, Daniel Zaborski

Turkish Journal of Veterinary & Animal Sciences

The relationships between the SNPs of the cytochrome P450 gene (CYP19/PvuII), steroid 21-hydroxylase (P450c21) gene (CYP21/HpaII), 2 polymorphic sites of estrogen receptor alpha gene (ER1/BglI and ER1/SnaBI), and milk production traits of Black-and-White cattle were analyzed. A total of 472 cows were included in the study and genotyped using PCR-RFLP. The frequencies of alleles for the Black-and-White cows were as follows: 0.923 - CYP19A, 0.077 - CYP19B, 0.042 - ER1/BglIA, and 0.958 for ER1/BglIG. For ER1/SnaBI, the frequency of allele A was 0.960 and that of allele G was 0.040. In the CYP21, all cows were genotyped as AA (no …

The Effect Of Ovine Placenta Extract, On Mammogenesis, Lactogenesis And Galactopoiesis In Sheep, Gabriel Cotor, Aneta Pop, Marian Ghita

Turkish Journal of Veterinary & Animal Sciences

The aim of the present study was to evaluate the effect of ovine placenta extract, obtained by affinity chromatography on immobilized wheat germ lectin, on mammogenesis, lactogenesis, and galactopoiesis in pregnant and lactating sheep. Placental extract (100 \mug/mL protein concentration) was subcutaneously injected to pregnant sheep in days 1, 4, 7, 10, and 13 of the experiment (totally 10 mL placenta extract/animal) alternatively on the right and left side of the neck. Placental extract induced a more intense development of udder parameters; udder circumference increase was of 16.73%, anteroposterior length increase was of 15.9%, and latero-lateral length of 11.1%. Placental …

The Increase Of Cd4+Cd25+ T Cells In The Peripheral Blood Of Pigs Persistently Infected With Porcine Reproductive And Respiratory Syndrome Virus, Jingwen Zeng, Danting He, Xin Guo, Xinna Ge, Hanchun Yang

Turkish Journal of Veterinary & Animal Sciences

Regulatory T lymphocytes (T-regs) may be involved in suppressing the host's immunity, which is important for viral clearance, and may therefore contribute to persistent viral infection. However, nothing is known regarding the situation of porcine T-regs during persistent infection with porcine reproductive and respiratory syndrome virus (PRRSV). This study, which used flow cytometry and real-time PCR, determined that the frequencies of CD4+CD25+ T-cells and porcine Forkhead/winged helix transcription factor (FoxP3) mRNA levels in peripheral blood significantly increased during PRRSV persistence, indicating that CD4+CD25+ T-regs might play an important role in PRRSV persistent infection. This study contributes to a better understanding …

Comparison Of Placentome Diameters In Single And Twin-Pregnant Sheep By Ultrasonographic Method, Güven Kaşikçi, Özge Yilmaz, Mehmet Can Gündüz, İsmai̇l Kirşan

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to determine the correlation between fetal number and placentome diameters in pregnant sheep. In the present study 25 Kıvırcık mixed breed pregnant ewes were used. Pregnancy of the ewes was diagnosed by transrectal ultrasonography by the 25th day after insemination. A transabdominal probe (6.5 MHz) was used on the pregnant ewes at the 30th day. At this time the placentomes appeared as hypoechogenic areas with a "C"-like shape. Throughout the pregnancies 5 placentomes were measured from each ewe every week. The results showed no significant difference between placentome diameter size in single and twin-pregnant …

Preliminary Bacterial Study On Subclinical Mastitis And Teat Condition In Dairy Herds Around Shiraz, Masoud Haghkhah, Mohammad Rahim Ahmadi, Hamid Reza Gheisari, Ali Kadivar

Turkish Journal of Veterinary & Animal Sciences

Mastitis is a widely occurring and costly disease in the dairy industry. The aim of this study was to isolate bacterial causes of subclinical mastitis and investigate the relationship between subclinical mastitis and teat condition in dairy herds located around Shiraz, Fars province, Iran. From 7 commercial dairy herds around Shiraz 354 lactating cows were selected randomly. Subclinical mastitis was evaluated by the California Mastitis Test (CMT), electrical conductivity (EC), and somatic cell count (SCC). Teat condition was evaluated by measuring teat width and length. In the 68 samples of bacterial cultures identified, 14 different bacterial species were found. Staphylococcus …

The Effect Of Year And Season Of Birth, Sex, Sire, And Breeder On Ossification Of The Distal Epiphyseal Cartilage Of The Radial Bone In Thoroughbred Horses, Jaroslaw Luszczynski, Magdalena Pieszka

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to evaluate the effect of specific factors on ossification of the distal epiphyseal cartilage of the radial bone in Thoroughbred horses. The study was carried out on 452 Thoroughbred horses, two years old, that were under race training. X-ray tests were conducted and interpreted every month starting at the 18th month of life and continuing until ossification of the distal epiphyseal cartilage of the radial bone occurred. In the statistical model, the year of birth, sex, birth season, sire, and breeder were treated as constant effects. Horses that were born in the spring season …

Growth Characteristics In Lambs Of Estrus Synchronized Ewes In Grower Conditions, Murat Yilmaz, Tufan Altin

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to determine the growth characteristics of lambs of estrus-synchronized ewes in an extensive production system during 2 different periods. The animal material of this study was composed of 325 head Chios × Kıvırcık cross breeds. These lambs were provided by mating 124 Kıvırcık sheep on 2 farms with 8 Chios rams provided by the Adnan Menderes University, Faculty of Agriculture, Sheep Research Unit. The estrus cycles of the ewes were synchronized with intra-vaginal progestagen sponges impregnated with 30 mg of cronolone. After 12-14 days the sponges were removed, the females received an intramuscular injection …