Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Producción (2)
- AP-2�� (1)
- Agricultural ecology (1)
- Agricultural systems (1)
- Bos indicus and bos taurus (1)
-
- Calidad de la leche (1)
- Cundinamarca (1)
- Gametes (1)
- Ganado lechero (1)
- Ganado vacuno (1)
- Industria lechera (1)
- Lipids (1)
- Manejo y cuidado de vacas (1)
- Mutation (1)
- Oocytes (1)
- Pastos y forrajes (1)
- Reproduction (1)
- Silvopastoreo (1)
- Soils Nitrogen content (1)
- Tabio (1)
- Tocancipá (1)
- Transcription factor (1)
- Zipaquirá (1)
Articles 1 - 5 of 5
Full-Text Articles in Animal Sciences
Crop/Livestock Integration Effects On Soil Quality, Crop Production, And Soil Nitrogen Dynamics, Ellen B. Mallory
Crop/Livestock Integration Effects On Soil Quality, Crop Production, And Soil Nitrogen Dynamics, Ellen B. Mallory
Electronic Theses and Dissertations
Regional integration of potato and dairy farms has developed in Maine through arrangements where manure, feed, and sometimes land, are exchanged between neighboring farms. The effects of integration on soil quality, crop production, nitrogen (N) cycling, and N loss were investigated in field and laboratory studies of contrasting amended (manure, compost, green manure, and supplemental fertilizer) and nonamended (fertilizer only) soil management systems within 2-year potato (Solanum tuberosum L.) rotations in the Maine Potato Cropping Systems Project (MPEP). Additionally, soil quality of 48 integrated and nonintegrated Maine potato and dairy farm fields was assessed. The MPEP’s amended soil system enhanced …
Evaluación De La Estabilidad Proteica En La Leche Y Su Relación Con La Calidad Microbiológica En Los Municipios De Tocancipá, Tabio Y Zipaquirá, Edgar Mauricio Ariza Aya
Evaluación De La Estabilidad Proteica En La Leche Y Su Relación Con La Calidad Microbiológica En Los Municipios De Tocancipá, Tabio Y Zipaquirá, Edgar Mauricio Ariza Aya
Zootecnia
Se realizó la evaluación de la estabilidad proteica por medio de la técnica de Ramsdell y la calidad higiénica de la leche a través de recuentos totales de mesofilos y coliformes, en 18 hatos de la sabana de Bogota, para establecer alguna relación entre estas dos variables evaluadas. El muestreo se organizó por rutas de recolección establecidas por la empresa Alquería S.A y se realizó durante los meses de noviembre de 2006 y enero del 2007, se empleó la técnica de recuento en placa para el recuento de Coliformes con el medio VRB y de Mesofilos con el medio Plate …
Investigating The Role Of Transcription Factor Ap-2�� In Reproduction, Anne Rachelle Howlett
Investigating The Role Of Transcription Factor Ap-2�� In Reproduction, Anne Rachelle Howlett
Undergraduate Honors Capstone Projects
The proper formation of gametes is critical for the propagation of species and for the fertility of the individual. The molecular pathways involved in gamete formation remains elusive, therefore, identification of genes involved is an important prerequisite to further our understanding of reproduction. This research will improve infertility treatments and prevention methods in animals and humans. We created mutants that lacked AP-2�� transcription factor after the mouse had entered meiosis and initiated folliculogenesis. The AP-2�� mutants were still fertile and phenotypically similar to normal mice that expressed AP-2�� transcription factor. We also produced mutants that lacked AP-2�� transcription factor during …
Producción Y Calidad De Leche En Vacas Holstein En Dos Arreglos Silvopastoriles De Acacia Decurrens Y Alnus Acuminata Asociadas Con Pasto Kikuyo, Pennisetum Clandestinum, Eugenio Gualdron Calderón, Cesar Eduardo Padilla Charry
Producción Y Calidad De Leche En Vacas Holstein En Dos Arreglos Silvopastoriles De Acacia Decurrens Y Alnus Acuminata Asociadas Con Pasto Kikuyo, Pennisetum Clandestinum, Eugenio Gualdron Calderón, Cesar Eduardo Padilla Charry
Zootecnia
La investigación se llevó a cabo en la finca Villa Nataly, Vereda Olarte, localidad de Usme. Según clasificación Holdridge es Bosque muy húmedo montano bajo; precipitaciones de 800 a 1000 mm, temperaturas entre 6 y 12 C°. Los suelos predominantes en la finca son de textura franca, buen drenaje y notable susceptibilidad a la erosión. Los tratamientos evaluados fueron dos arreglos silvopastoriles uno conformado por Alnus acuminata asociado con Pennisetum clandestinum denominado sistema silvopastoril de sombra (SSPS), y otro arreglo conformado por Acacia decurrens + A. acuminata asociados con P. clandestinum, denominado sistema silvopastoril de sombra y ramoneo (SSPSR), comparados …
Intracellular Lipids In Bos Indicus And Box Taurus Oocytes, Casey Bryant Ballard
Intracellular Lipids In Bos Indicus And Box Taurus Oocytes, Casey Bryant Ballard
LSU Master's Theses
It has been proposed that Bos indicus when compared with Bos taurus embryos are more sensitive to cryopreservation procedures due to higher intracellular lipid content of the embryos. With cyropreservation of Bos indicus embryos increasing for export, it is essential to improve the viability of these cryopreserved embryos. In Experiment I, M-II oocytes from mice, pigs and cows were subjected to two different procedures to evaluate lipid content. The lipid content present in pig oocytes was significantly (P<0.05) higher when compared with mouse and cow oocytes. Pig oocytes had a lower settling point in the sucrose buoyant density gradient and higher Nile Red units, which indicated higher lipids present in the oocytes. In Experiment II, it was determined that M-II oocytes aspirated from superstimulated Brahman donors were significantly higher (P<0.05) in lipid content compared with English breed donors. The lipid content present in Brahman oocytes was higher when compared with English breeds when tested with a sucrose buoyant density gradient and Nile Red staining. In addition, donor females with higher body condition scores were significantly (P<0.05) higher in oocyte lipid content when compared with donor females of lower body condition scores. Furthermore, animal body condition scores, cholesterol and triglyceride levels prior to oocyte aspiration may be indicators of intracellular lipids in the oocytes and embryos. To our knowledge, this is the first report that evaluated intracellular lipid content of M-II oocytes of different beef breed types using a sucrose buoyant density gradient and Nile Red staining.