Most pigs that are very heavy muscled also tend to be harder. Replace your Oat Groats with 698 Slop and rely on 698 to help soften their muscle and give them more body.
Most very heavy muscled pigs will stay on 685. If you have managed muscle enough you may be able to add in a small amount of 611 to help with freshness and softness at the end.
Double-muscled cattle refers to 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 augmenting muscle growth. Additionally, these mutations reduce the superficial and internal fat deposits, causing the meat to be less marbled and lower in fat content. Animals homozygous for myostatin mutation (inheriting a mutant copy of myostatin from both sire and dam) also have improved meat tenderness in some cuts of meat. The enlarged muscles of dam and calf at birth leads to increased difficulty of calving, and in some breeds frequently necessitates birth by cesarean section.
Double-muscled breeding is done to get more meat and less fat. Backfat is generally found to be less in double-muscled cattle than in cattle with normal muscling. Animals that are double-muscled have a higher carcass yield but this does come with new problems for the cattle. The meat from double muscled cattle is tenderer. "There is a persisting trend to improve carcass quality in specialized beef breeds. A higher meat yield and more lean meat are desirable for the meat industry."
How to cite this article: Qian, L. et al. Targeted mutations in myostatin by zinc-finger nucleases result in double-muscled phenotype in Meishan pigs. Sci. Rep. 5, 14435; doi: 10.1038/srep14435 (2015).
Double-muscled Belgian Blue (DMBB) animals originated from the dual-purpose Belgian Blue cattle breed. Due to an intensive selection, there was a transition from halfway the fifties to the end of the sixties of the previous century to animals with a larger muscular development . In 1973 the Belgian Blue breed was divided into a double-muscled strain and a dual-purpose strain, each with a separate herd book. The DMBB breed is the most important breed for beef production in Belgium, and it is often used for crossbreeding abroad [3,4], because of its excellent carcass quality . Derno et al.  reported a variation in energy requirements for maintenance of 10% to 30% because of genetic differences, so that it is not excluded that DMBB and non-DMBB animals have divergent requirements. Hanset et al.  reported 8% lower maintenance energy requirements for DMBB bulls compared to non-DMBB bulls. However, Vermorel et al.  found no significant difference in energy expenditure between 10-month old DMBB and non-DMBB bulls. Similar energy requirements for maintenance of double-muscled and non-double-muscled beef steers were obtained when they were scaled to adult and current protein masses . Initially, most nutrient requirements of this young DMBB breed were unknown. In the mean time, energy and protein requirements for growing-finishing beef bulls have been derived , but maintenance requirements of DMBB cows are lacking.
Key to creating the double-muscled pigs is a mutation in the myostatin gene (MSTN). MSTN inhibits the growth of muscle cells, keeping muscle size in check. But in some cattle, dogs and humans, MSTN is disrupted and the muscle cells proliferate, creating an abnormal bulk of muscle fibres.
Double-muscled is a physical mutation that increases the player's Strength. Additionally, every melee attack a creature with Double-muscled makes that hits and successfully penetrates has a mutation level based chance to daze their target for 2-3 rounds. This effect functions similarly to dazing caused by a critical hit from a cudgel, and will stun creatures that are already dazed. A single attack can daze more than once if there are multiple sources of daze, such as a cudgel's critical hit or Bludgeon. This can stun a target with a single blow.
Muscular hypertrophy has been observed in some cattle breeds from the Northern humid areas of Spain: Asturiana de los Valles, Rubia Gallega and Pirenaica. Their characteristics are described and some figures on their value as sire breeds are also given. In the Asturiana and Pirenaica breeds especially, double muscled males are selected and used in artificial insemination mainly for terminal crosses due to their better carcase characteristics and prices. Nevertheless, official selection programmes in purebreeding do not recommend wide diffusion of the double muscled trait due to its unfavourable side effect on reproductive performance. This enhances the need for setting up a Spanish research project on the incidence of such a trait. 041b061a72