Breastfeeding physiological characteristics of piglets:
Piglet birth weight is small, less than 1% of adult body weight, but soon after birth, growth and development. Usually birth weight is about 1kg, 10-day weight of a birth weight more than 2 times, 30 days up to 5 to 6 times, up to 60 days 10 to 13 times.

Piglets grow fast because of strong material metabolism, particularly protein metabolism and calcium, phosphorus metabolism much higher than adult pigs. 20 days after birth, per kilogram of body weight of protein deposition, equivalent to 30 to 35 times the adult pigs, the required metabolic net energy per kg of body weight three times adult pigs. Therefore, the piglets need nutrients, both in quantity and quality high, particularly sensitive reaction to feed nutrient insufficiency, therefore, on the pig must ensure the supply of various nutrients.

Pig body water, protein and mineral content is decreased with age, while the ability of the deposition of fat and increase with age. 40% of the energy required for the formation of protein energy than the formation of fat needed about less (protein forming lkg only 23.63MJ, formed lkg fat you need 39.33MJ). So, the big pig than pigs grow faster, more cost-effective use of feed, which is unmatched by other livestock.

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