The growth rate of pigs is one of the most important economic indicators for pig farms. In the pig farms, the breeding, nutrition and feeding programs we adopted started from 7 days after the piglets were born, and even reached the “Don't let pigs lose at the starting lineâ€. In the breeding farms, the index we set for the growth rate of pigs is defined as the “age of 100 kg body weightâ€; in the finishing pig farms, various nutrient and feeding programs are in the game growth rate, and the feed conversion rate. Feeding the juvenile piglets at 7 days of age should be fed with chute materials. The piglets at 28 days of age should reach an average of 9.5 kg for the weaned body, or 6 kg for the 21 day old age, and 70 days or even 60 days for the 30 kg body weight. Days of age; reaching the age of 100 kg body weight to reach 140 days, or even shorter. However, in the finishing pig farms, the nutrition and feeding programs adopted did not seem to be as good as expected. The piglets started diarrhea and coughing during the lactation period. The diarrhea and coughing of the nursery pigs were more serious. The same was true for the growing pigs. Drugs, the result is that the survival rate of piglets from birth to market is very low, and some even less than 50%, reaching the age of 100Kg to 200 days of age, or longer. Where are the root causes of this phenomenon? The fundamental reason lies in the selection of breeding, nutrition and feeding programs to determine the growth rate of pigs, which seriously violates the basic growth and development of pigs.
The pig e-net users suggested that the piglets should be healthy in the immune system, nervous system, endocrine system, and visceral tissues and organs before breast-feeding and nursing, that is, 30 kg body weight. If, in the meantime, pigs grow too fast and the skin is shiny, they will adopt unconventional nutrition and feed, as well as health care programs. Piglets will suffer from feed poisoning, drug poisoning and even disease, and the above system will develop. It will be severely damaged and the organic damage of certain organs will be lifelong and irreversible. As a result, about 10% or even 30% of fattening pigs have grown slowly, have diseased disease, and cannot produce slaughter at the same time, and the increase in slaughter days can range from 20 to 30 days. Over-pursuing the growth rate and feed conversion rate before 30 kg of body weight is not worth the candle. Comparing the growth rate of pigs in China, the United States, Canada, and Denmark, the breeding traits for growth rate in China, the United States, and Canada are defined as “days of 100 kg body weightâ€; the Danish swine breeding program defines the growth rate as "The daily gain of 0-30 kg body weight, the daily gain of 30-100 kg body weight", and the weights in the comprehensive selection index are very different. For example, the daily weight gain of Duroc's 0-30 kg body weight is 3%. The daily weight gain of 30-100 kg body weight is 22%. In actual production, the "American pigs" and "additional pigs" had a faster growth rate than the "Dan series" before the 30 kg body weight, and the growth rate and feed conversion rate during the 30-100 kg body weight period were far inferior to those of the Dan system. "Pig" has also proved such a phenomenon in the results of breeding pigs in several breeding centers in the Ministry of Agriculture for the past 10 years. In fact, modern improved breed pigs, before 30 Kg body weight, as long as the nervous system, endocrine system, internal organs, immune system can normally grow and develop, moderate growth rate, growth rate during 30-130Kg weight, feed conversion rate will be To achieve our desired result.
In summary, I believe that the breeding traits, nutrition, and feeding programs for the growth rate of live pigs should be re-planned to achieve the same results in breeding pig farms and finishing pig farms.
Similarly, breeding, nutrition, and feeding programs for broiler growth have the same problems as pigs.
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