Year1
- 规格：
- 1000gX25袋/件
- 数量：
- 1000
- 包装：
- 简包装
Recently, pig farms have repeatedly experienced problems with sows retarding estrus or being infertile after repeated breeding. Some farmers have conflicts with the breeding farms because of this. Let everyone understand the reasons why sows are delayed in estrus or infertile after repeated mating, so as to take corresponding prevention and control measures. We have summarized the main causes of the disease and prevention and control measures for farmers’ reference only.
The reproductive system of gilts is underdeveloped or slow, which inhibits the period of puberty. The method of raising fattening pigs to breed gilts results in excess energy and insufficient or incomplete protein, vitamins and trace elements, which affects the normal development of the sow's ovarian function and reduces the sensitivity of the ovary to gonadotropins, resulting in Sows are not in heat.
, Nutritional sow feed is single, nutritionally deficient, insufficient in protein content or of low quality. Vitamins and minerals are deficient. The body condition is too fat or too thin, which inhibits the hypothalamus from producing gonadotropin-releasing factor, reduces luteinizing hormone and The secretion of follicle-stimulating hormone delays the onset of estrus in primiparous or multiparous sows.
Excessive breastfeeding time causes body condition and delayed pregnancy. The vast majority of domestic pig farmers in our country mostly follow the weaning method at the earliest day of life. Currently, many advanced technologies have emerged in various places to wean piglets at the earliest age. But most of them are weaned at ~3 days of age.
Diseases that may cause sows to lose estrus include: porcine reproductive and respiratory syndrome, endometritis, circovirus disease, etc. For example, most gilts that are emaciated due to circovirus disease cannot come into estrus normally. We must do a good job in disease prevention and control, focusing on prevention and combining prevention with treatment, so that prevention is more important than cure.
, sows suffer from chronic digestive system diseases, chronic respiratory diseases and parasitic diseases.
, Improper feeding and management. For gilts, it is better to raise them in groups in large pens (one head per pen) than in positioning pens. Proper climbing between sows can promote estrus. However, if there are more than heads in each column, it will be crowded and fighting will be frequent, which is not conducive to estrus. If raised in positioning pens, exercise should be strengthened.
Shengda experts suggest: For sows with delayed estrus, corresponding measures can be taken according to different situations.
Nutritional control: Sows with weak body condition should be strengthened in nutrition, short-term optimal feeding, and supplementary feeding of high-quality green feed to make them reach fat as soon as possible. For over-fat sows, feed restriction should be implemented, and they should exercise more and feed less. , until recovery of physical condition.
Management measures:: Sows are adjusted into pens, boars are stimulated, over-fat sows are starved, and the previous feed is halved
Traditional Chinese medicine conditioning: for sows that are not in estrus or have delayed estrus , adding sow life elements to the mix to condition, prevent and treat sub-health of sows, restore normal estrus, breeding and birth, promote estrus and follicle maturation and ovulation within days, and improve the overall production performance of sows.
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