Standardized sow breeding method

Abstract

The invention relates to a standardized sow breeding method, which is characterized in that the feeding method is divided into two stages which are material feeding at pregnancy stage and material feeding at lactation stage. The material used in the pregnancy stage comprises, by weight, the following components: 40-50% of corn, 20-30% of concentrated material A and 25-35% of bran; the material used in the lactation stage comprises, by weight, the following components: 55-65% of corn, 25-35% of concentrated material B and 15-25% of bran. According to the invention, the quantity and quality of the product are improved, the energy is improved and the nutrients are balanced, the maximization of the formula value is achieved, the production requirement of the sow is met, and the economic benefit of the sow breeding is improved, and the breeding mode is promoted to develop to large scale and intensification.

Description

technical field [0001] The invention relates to a method for breeding livestock and poultry, in particular to a method for standardized breeding of sows. Background technique [0002] With the increase of breeding cost year by year and the spread of the epidemic in a large area, the complicated situation caused by various subjective and objective reasons, such as the panic of farmers, has led to changes in the structure of pig breeding, towards large-scale, intensive and professional breeding. The pattern process is getting faster and faster. The outstanding performance is that farmers have reduced the number of breeding sows, and some rural back-to-back farmers have even closed down due to their poor ability to resist risks. The number of reproductive sows directly affects the number of live pigs for slaughter. Therefore, the sharp decrease in the number of reproductive sows leads to a reduction in the number of live pigs, a decline in slaughter, a shortage of pork in the ...

AI Technical Summary

Problems solved by technology

There are many factors that are not conducive to the efficient production of sows in this method, specifically the following shortcomings: The biggest feature of the general-purpose concentrated feed is that it is simple and convenient to use, which is also the reason why it is selected in the traditional breeding mode

However, with the improvement of scale, breeding technology and ideological understanding, it is found that there are many disadvantages in the use of general-purpose concentrated feed for sows, and it cannot meet the precise nutritional needs of each breeding stage.

Because the nutritional needs of sows at different reproductive stages vary greatly, research and practice have shown that high nutrient intake in the early pregnancy is not conducive to the survival of embryos and the feed intake of sows during lactation, so sows should be restricted in the early pregnancy : Nutritional restriction in the second trimester will have great changes in sow body condition, fetal growth and muscle fiber accumulation, mammary gland development and birth weight; increasing feeding level in late pregnancy will have a certain effect on promoting piglet birth weight and survival rate , but excessive feed intake will lead to decreased feed intake during lactation, increased weight loss, and reduced lactation, resulting in decreased production capacity; the nutritional level of lactating sows not only directly affects the lactation ability of sows, but also affects the growth and development of piglets. Moreover, it will affect the reproductive performance of the next litter of sows. In addition, the age of sows reaching the mating period is relatively young, the lean meat rate is getting higher and higher, and they tend to be prolific, but their appetite is poor. Maximize feed intake

This requires that in actual production, a diet with an appropriate nutritional level should be rationed according to the needs of sows, and the use of full-price feed made from general-purpose concentrated feeds often cannot be achieved.

When the quality of dietary raw materials is good, the feed intake of pregnant sows is too high. Decrease in piglet weight, which in turn affects piglets' weaning weight and subsequent growth performance

For diets with poor raw material quality, it cannot meet the needs of high-yield sows, especially during the lactation period. If the nutritional level is too low, the sows will use their internal reserves to meet the needs of reproductive activities in a short period of time, thus affecting the reproduction of subsequent reproductive cycles. score