The breeding of Sanyuan pigs must master and utilize the growth and development of pigs, control the nutrition and environmental factors, adopt advanced feeding and management techniques, increase daily weight gain, reduce feed consumption and production costs. Focus on the following four production technology measures.
First, buy breeding pigs and piglets
In swine production, especially in the rearing stage of the swarm, it often happens that the mothers have to stay with their mothers and the pigs must be seeded. This can not be done carefully. This is inconsistent with the requirements for scientific pig raising. . The following points must be observed when selecting breeding pigs and Miao Pigs: First, the purpose of introduction must be clear; Second, the introduced pig species must be adapted to the local environmental conditions; Third, it is necessary to understand the genealogy; Fourth, it is necessary to identify the good appearance; Pigs should meet the characteristics of breeds, and hybrid pigs should have good body conditions. The fifth is better appetite.
Second, the appropriate level of dietary nutrition
The amount of crude fiber in the diet of hogs affects daily gain and carcass leanness. Every 1 percentage point increase of crude fiber in the diet can reduce organic matter (or energy) digestibility by 2 percentage points and crude protein by 1.5 percentage points, resulting in a reduction in feed intake, a decrease in daily gain and thinning of back fat, and a reduction in lean meat percentage. rise. It is recommended that when crude dietary protein and digestive energy levels are normal: 20-35 kg body weight, crude fiber content is about 5%-6%, and 35-90 kg stage is 7%-8%, but should not exceed 9%.
Third, for suitable environmental conditions
(I) Appropriate temperature and humidity Different weights of pigs require the most suitable temperature, weight 11-45kg is 21 °C, weight 45-90kg, shew temperature 18 °C is the most suitable, and pigs weighing 135-160kg, Shervin 16°C is the most suitable. When the temperature is too high, you can use shelters, showers, feed more cold water and juicy green feed and other measures to increase the pig's daily gain. When the temperature is too low, insulation measures should be taken to increase the temperature. Such as promoting the use of plastic warm pigshed and hedgegrass method.
(2) Appropriate lighting conditions, suitable ventilation time and light intensity. All pigs must be ventilated throughout the year. However, in the winter, the contradiction between ventilation and warmth must be handled properly. It is not only necessary to pay attention to keeping warm and neglecting the ventilation, resulting in bad air sanitation in the pig house, lowering of pig weight gain and increase of feed consumption.
(3) Appropriate air components Pay attention to the greening of pig farms, timely remove and properly dispose of excreta, dirt, etc. to make the pig houses well ventilated and clean and disinfect pig houses.
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