Modification of performance traits, Biology

Modification of performance traits

Modifications to livestock that could influence traits such as growth rate, feed efficiency and meat quality are major goals for livestock breeding in agriculture. Mice in which the myostatin gene has been knocked out have considerably more skeletal muscle than wild type controls. The double-muscle phenotype of some breeds of cattle is caused by natural mutations of this gene and these are widely bred in Europe for improved meat quality. Knockout of this gene in sheep or pigs could produce animals with increased skeletal muscle mass and improved meat quality, although there are clearly major ethical issues relating to animal welfare that would have to be considered if these types of animal were generated.

Other areas of transgenic applications in animal agriculture include modifying milk composition to increase milk proteins, to decrease milk fat or to change milk composition to provide a source of milk for lactose-intolerant individuals or to provide a source of milk that is more efficiently processed into cheese. An area that definitely needs more exploration is the use of the chicken oviduct as a bioreactor. This approach has numerous advantages over the transgenic mammary gland. To name a few, the ease of collecting the product, short generation times, quantity, safety and low costs are unmatched by the traditional approach of transgenic milk. However, this system is still in its infancy because micromanipulation of the chicken embryo is very difficult, and transgenic chickens are often mosaics. It is also possible that the best protein expression levels will be obtained when multiple copies of transgene integrate into a particular favourable chromosomal locus. Cloning will greatly reduce timeliness to get therapeutic products to the market by producing large number of genetically identical transgenic livestock animals in the first generation.

Posted Date: 9/18/2012 7:57:14 AM | Location : United States







Related Discussions:- Modification of performance traits, Assignment Help, Ask Question on Modification of performance traits, Get Answer, Expert's Help, Modification of performance traits Discussions

Write discussion on Modification of performance traits
Your posts are moderated
Related Questions
The Jones family was caught in a fire but escaped. Unfortunately the father and daughter suffered burns. The father had second degree burns on his chest, abdomen, and both arms, an

1.  Identify and compare the methods of somatic gene therapies for ADA deficiency described on pp. 404-405 (Lewis) and OTC deficiency described on pp. 405-406 (Lewis). 2.  Compa

Does every amino acid have a central carbon? To which organic group is that central carbon bound? A carboxyl group -COOH, an amine group - NH 2 , an atom of hydrogen -H and a v

M a l i g nant catarrhal fever (MCF) Malignant catarrhal fever is invariably fatal generalized lymphoproliferative disease of cattle and sometimes of wild ruminants. It is

Fracture - It is a break of a bone. Bone fracture are of many types - (i) Green stick fracture - It is merely a crack, the bone remains partly intact. (ii )     Sim

Define Changing Trends in Dietary Intake? As a practicing dietician, you must be sensitive to the society as a whole. The fat requirements have been worked out with a premise o

Q. Principal categories in classification? First of all there is a need to know what classification is? Let us define in simple term. Classification is placing of a plant (or g

Explain What are analogies for mitochondria? Ans) Well, as we know, the mitochondria are the producers of lots of a cell's energy and the nucleolus makes ribosome's.

Q. Why is the digestive system of these animals called incomplete? Incomplete digestive system is in that which the digestive cavity has only one opening.

Non living vs. Living matter As is clear from above   account the energy of matter resides in its chemical organization. The total potential chemical energy, entrapped as b