Scientific pig raising and skilled migration

1, and the variety combination should be scientific and standardized.

The consanguineous combination of three-way hybrid lean pigs has great influence on daily gain, feed-to-weight ratio, slaughter rate and lean meat rate. Therefore, the consanguinity combination of parents of ternary hybrid pigs must be clearly understood, and specific markers and materials must be investigated.

2. Piglets must grow and develop well in the early stage.

There is a strong correlation between newborn weight and weaning weight of piglets and later weight gain.

The sign of good growth and development of piglets is that the weight at 45 days old is above 17.5 kg.

This shows that piglets grow well in fetal period and lactation period, and the daily gain and feed-to-weight ratio are ideal in fattening period.

If the age of piglets cannot be determined, it can be determined by observing the development degree of their sex organs.

If the weight of piglets is 20 ~ 25 kg, the testicles of boars and the vulva of sows have not yet begun to develop, indicating that they are growing well, and vice versa.

3. Rational use of complete feed

Poor nutrition is the main factor that pigs can't reach their maximum production potential. Nutrients in feed also affect the immune function of pigs, and carcass quality is directly affected by feed varieties.

Therefore, in order to obtain the maximum production benefit of three-way hybrid lean-meat pigs, complete feed is the key to successful feeding.

4. Pay attention to saving feed costs.

Feed accounts for about 70% of the cost of raising pigs.

In order to meet the nutritional needs of pigs and reduce the feeding cost, the following methods can be adopted in management: multi-stage feeding.

The growth period of pigs is divided into several stages, and the ratio of concentrate premix to base material (high-priced protein feed) is adjusted to 1 times every 10 day, that is, the premix ratio decreases from 20% to 1 percentage point every 10 day, and the base material increases every 10 day.

Dry feed of raw materials.

Many nutrients in feed, especially vitamins, are easy to be destroyed and inactivated at high temperature, so it is better to eat them raw (except bean feed).

Some nutrients will be lost in water and some chemical changes will occur, so it is necessary to popularize the dry feeding technology of raw materials.

Eating dry food for pigs can increase chewing times, promote saliva secretion, make digestive enzymes in saliva play a full role and improve feed utilization rate.

Limit feeding.

Restricting feeding can improve the feed utilization rate and lean meat rate of commercial pigs.

-Generally, when pigs weigh less than 60 kg, do not restrict feeding, so as not to affect daily gain.

When the weight is above 60 kg, the digestive organs of pigs develop well and the feed intake is large. Feeding restriction can achieve the purpose of saving feed, reducing fat deposition and improving lean meat rate.

The standard of food restriction is generally 80% ~ 85% of the total intake.

Slaughter at the right time

The growth and development of pigs are carried out in the order of bone, meat and fat. The longer the feeding period or the larger the weight of the pig, the more fat deposits and the thicker the pigskin will reduce the lean meat rate of the carcass.

In addition, fat deposition in pigs consumes nine times as much energy as that in protein, so raising pigs has to pay a huge feed price.

The slaughter weight of three-way hybrid lean-meat pigs is usually 70 ~ 90 kg.

5. Do a good job in raising ecological environment and reduce stress reaction.

Three-way hybrid lean-meat pigs are sensitive and prone to stress reactions, affecting growth and health, and even causing death. For example, in high temperature environment, the appetite of pigs decreases and the weight gain is slow. Low temperature will increase the nutritional consumption of pigs. High feeding density, serious noise and air pollution make it difficult for pigs to calm down, leading to tail biting, ear biting and fighting. Therefore, the pigsty should be kept warm in winter and cool in summer, ventilated and breathable, and the density is appropriate to make pigs healthy.

In addition, epidemic prevention, isolation and regular disinfection should be done to ensure the safety of pigs.