El ganado enfocado en la producción de carne ha venido mejorando atreves del tiempo debido a la estricta selección genética que se está implementando para conservar y transmitir de generación en generación características como el marmóreo y terneza de la carne de res, La variación en la terneza de la carne entre razas ha sido reportada por Marshall (1999) y Burrow et al. (2001); Es uno de los atributos más valorado (Miller, 1992; Boleman et al., 1997). Muchas características genéticas relacionadas con calidad de carne involucran un nuero especifico de genes, ciertos genes en particular expresan una proporción significativa de la variabilidad composicional y calidad cárnica (Burrow et al., 2001)
El propósito es identificar los genes candidatos en la expresión de la calidad de la carne bovina, uno de los genes candidatos es el gen PPARGC1 que codifica el coactivador 1 alfa del receptor gamma activado por proliferadores peroxisómicos, que es un cofactor que interviene en la transcripción de algunos genes, entre ellos MEF2 (Muscle Enhancer Factor) que células de tejido adiposo se lo relaciona con el marmoreo, porque co-activa a PPAR€, PPAR y hormonas tiroideas (Puigserver,et al., 1998) permitiendo la fijación de la grasa intramuscular.
Otro de los genes que tienen una gran importancia en el mejoramiento de la carne es el gen capn1 (subunidad mayor de la μ-calpaína) que ha sido asociado con terneza (Smith et al., 2000;Page et al., 2002, 2004); En el caso del gen ppargc1a,Se observó una alta frecuencia de heterocigotos (CT). El alelo C ha sido considerado el más favorable para la terneza de la carne (White et al., 2005).
Actualmente, se han reportado SNPs (Single nucleotide polymorphisms) en las proteínas Leptina,...
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...nes de G y A en ambas poblaciones de ganados criollos colombianos (B. Taurus y B. Indicus) lo cual está directamente relacionado con la producción de carne magra y el contenido de un buen marmóreo.
Works Cited
http://www.avpa.ula.ve/libro_desarrollosost/pdf/capitulo_19.pdf
http://itzamna.bnct.ipn.mx/dspace/bitstream/123456789/12292/3/TESIS%20FRANCISCO%20PAREDES.pdf
http://acteon.webs.upv.es/CONGRESOS/AIDA%202003/checa.pdf
http://biblioteca.ucm.es/tesis/vet/ucm-t26294.pdf
http://www.redalyc.org/pdf/495/49520788041.pdf
http://rccp.udea.edu.co/index.php/ojs/article/view/777/840
http://www.uco.es/conbiand/aica/templatemo_110_lin_photo/articulos/2012/Trabajo072_AICA2012.pdf
http://biblioteca.ucm.es/tesis/vet/ucm-t26294.pdf
http://itzamna.bnct.ipn.mx/dspace/bitstream/123456789/8886/1/ANAGENES.pdf
http://www.colvema.org/pdf/6473geneticaii.pdf
Wooding, Stephen. "Phenylthiocarbamide: A 75-Year Adventure in Genetics and Natural Selection." Genetics 174.4 (2006): 2015. Print.
revealed that three of the fourteen samples were were homozygous while the other eleven were
Popular main dishes include lechón asado (roast pig), bictec de palomilla (sirloin steak), ropa vieja (shredded beef), and pollo asado (roasted chicken); these are accompanied by arroz blanco y frijoles negros (white rice and black beans), and if it is cooked together congri or moros y cristianos (black beans and rice). Desserts are rich and very sweet. After meals at home, in restaurants, at work, and at any time and everywhere Cubans love to drink café Cubano, the strong and bittersweet coffee.
-Reilly Philip. Is It In Your Genes. Cold Spring Harbor Laboratory Press. 2004: 223-228. Print
This then further contributes to impaired insulin signalling and endothelial dysfunction (Radin, et al., 2009). Energy restriction through a nutritional plan has been associated with improved glucose tolerance (Freestone, et al., 1992 and Van Weyenberg, et al., 2008). Insulin resistance and obesity has become a lot more common in recreational breeds such as the Spanish Mustang, Morgan, Warmbloods but is still most commonly seen in pony breeds (Johnson, 2002; Irelanda, et al., 2013 and Carter, et al., 2009).... ... middle of paper ... ...
Vicuna, Ivan. (1990). “Biografia de Jose Maria Velazco Ibarra.” Quito, Ecuador. Editorial Atlantis Cia. Ltda.
Rantala, M. J., and Roff, D. A. 2006. Analysis of the importance of genotypic variation,
In order to figure out the genes responsible, there are several other factors that must be determined. These factors include the number of genes involved, if each gene is x-linked or autosomal, if the mutant or wild-type allele for each is dominant, and if genes are linked or on different chromosomes. Proposed crosses include reciprocal crosses between the pure-breeding mutants of strains A and B with the wild-type will help determine if the genes or sex-linked or autosomal, in addition to which alleles are dominant (8). Another proposed cross includes complementation crosses between pure-breading mutants from strains A and B to determine if one or two genes are involved (8). Furthermore, testcrosses between F1 progeny and pure-breeding recessive mutants from strains A and B, which will help determine if genes are linked on the chromosome or if they assort independently (8). These proposed crosses are shown in the attached
Genetics plays a major role in obesity; inherited genes sometimes contribute to the accumulation of fat in the body. Over 200 genes have effect on the weight having repercussions from physical activity, food choices and metabolism. Therefore, genes may increase the vulnerability of a person to become obese. Family eating patterns and social tendencies can also trigger obesity. Moreover, environmental circumstances such as availability of food high in calories and fat and the increase of the portions and combination selections in meals contribute to the development of fat accumulated for years in the body (Whitney & Rolfes, 2011, pg. 277).
According to an article in Oxford Journals, “There is substantial evidence for the hereditability of obesity, and research in both rare and common forms of obesity has identified genes with significant roles in its etiology” (Genetics…).
Grävingholt, J. (1999b). Regionale Autonomie und postsowjetischer Autoritarismus: Die Republik Baschkortostan. Teil II: Herrschaftspraxis und föderale Beziehungen. Berichte des Bundesinstituts für ostwissenschaftliche und internationale Studien 17. Köln: BIOst.
...rcía Márquez concentrates on the idea that the animals incorporated into the work are portrayed to highlight the degradation of Santiago Nasar and the nature of his murder.
M Dufrasne, I. M. (2013). Journal of Animal Science. Animal Genetics , Volume 91 (12).
The purpose of this report is to provide a comprehensive analysis of exporting easy flame barbeques to Argentina and the factors that affected his exporting business.
...apter 362. Glycogen Storage Diseases and Other Inherited Disorders of Carbohydrate Metabolism. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo (Eds), Harrison's Principles of Internal Medicine, 18e. Retrieved January 21, 2012 from http://www.accessmedicine.com/content.aspx?aID=9144477.