Nutritional intake is related to dietary nutrient concentration and daily intake. The feed intake of just-weaned piglets is small every day, so the dietary nutrient concentration is relatively high to meet the needs. Therefore, the main points for improving feed intake are: easy access to new diets for piglets; use of pellets to promote feed intake; initial use of diets with higher concentrations; and rapid reductions in dietary concentrations as feed intake increases.
Set the diet specifications first to set the lowest energy concentration. Piglets below 10kg are not able to obtain enough energy by adjusting feed intake, so the energy concentration of the diet can not be lower than 14.57MJ/kg (metabolic energy). As the body weight of piglets increases, the energy concentration can be lowered, but it is recommended not to lower than 13.61MJ/kg (metabolic energy). Correct feeding and management in the early stages of nursery pigs will speed up the growth of piglets to maximize the genetic potential of muscle growth. This can reduce the age of reaching the market weight, thereby reducing feed consumption. And the faster the early growth rate, the higher the lean meat ratio of commercial pigs.
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