Double-muscled cattle - Wikipedia
Double-muscled cattle are breeds of cattle that carry one of seven known mutations that limits and reduces the activity of the myostatin protein. Normally, myostatin limits the number of muscle fibers present at birth, and interfering with activity of this protein causes animals to be born with higher numbers of muscle fibers, consequently ...
Double Muscling in Cattle: Genes, Husbandry, Carcasses and Meat
2012年9月20日 — Selection for an increased meatiness in beef cattle has resulted in double-muscled (DM) animals, owing to the inactivation of the myostatin gene. These animals are characterized by an excellent conformation and an extremely high carcass yield, coinciding with a reduced organ mass.
Double Muscling - an overview | ScienceDirect Topics
Double muscling is the term used to designate a muscle hypertrophy characteristic of cattle and Texel sheep. It is due to a mutation in the myostatin (MSTN) gene, which encodes for the growth regulating factor myostatin. Muscle hypertrophy arises from an increased total number of fibers.
Double Muscling in Cattle: Genes, Husbandry, Carcasses and Meat
2012年9月20日 — Molecular biology has enabled the identification of the mechanisms whereby inactive myostatin increases skeletal muscle growth in double-muscled (DM) animals. Myostatin is a secreted growth differentiation factor belonging to the transforming growth factor-β superfamily.
Double Muscling – Beef Cattle - Extension
Double muscling– A genetic trait in cattle where muscles are greatly enlarged rather than duplicate muscles. Double-muscled cattle usually grow slowly, and their fat deposition in and on the carcass is much less than that of normal beef animals.
Skeletal muscle development in normal and double‐muscled cattle ...
2004年11月5日 — In normal bovine muscle, fiber size varies according to fiber type. Type 2B fibers have the largest cross-sectional area, type 2A fibers are intermediate, and type 1 fibers are the smallest. In DM cattle, muscle fiber size is altered relative to NM, with both increases and decreases in fiber size being reported.
Weekly genetics review: Managing double muscling through selection
2020年7月21日 — Part of the challenge of double muscled cattle at calving appears to be a result of their physical conformation as a result of their extreme muscularity. Double muscled cattle tend to have a modified growth pattern where in some studies it was found that these had a higher birth weight, but a lower mature weight when compared to animals in the ...
Double Muscling in Cattle: Genes, Husbandry, Carcasses and Meat …
A review of the characteristics of DM animals is extant [13], but this paper aims to relate different characteristics of double muscling to feed intake, health, reproduction, histology and metabolism, and carcass and meat quality, and defines the consequences for livestock husbandry.
(PDF) Double muscling in cattle: A review - ResearchGate
1995年1月1日 — Muscular hypertrophy of genetic origin in cattle, commonly referred to as double muscling, is reviewed in this paper with a discussion on its possible use in beef and dairy-beef production...
Selection in action: dissecting the molecular underpinnings of the ...
2014年9月17日 — Belgian Blue cattle are famous for their exceptional muscular development or “double-muscling”. This defining feature emerged following the fixation of a loss-of-function variant in the myostatin gene in the eighties. Since then, sustained selection has further increased muscle mass of Belgian Blue animals to a comparable extent.