Effect of phytotoxin on sow reproduction and fetus

At present, there are widespread sow breeding obstacles in domestic swine farms. Through surveys on the use of oxytocin, it has been found that oxytocin is commonly used in midwifery for midwifery, and 53% of farms use oxytocin as In the midwifery program for sow birth management, 47% of pig farms use oxytocin for sows with signs of dystocia, and pig farms without oxytocin do not.

1. Analysis of possible causes of long sow birth process

(1) Weak uterine contractility is the main cause of dystocia. It is now generally believed that dystocia is caused by uterine contractility, and therefore oxytocin is commonly used to enhance uterine contractility to assist labor. Uterine contractility is mainly due to lack of feeding and management, lack of exercise, lack of appetite, resulting in inadequate supply of nutrients to the uterus, pulmonary distress or pneumonia caused by lack of oxygen supply to the uterus, resulting in uterine contractility, or improper use of drugs such as antenatal use of florfenicol. Test powders and preparations cause uterine contractions and weakness.

(2) Insufficient amniotic fluid is also an important cause of dystocia. Difficulty is not necessarily due to uterine contractility. Another important cause may be amniotic fluid deficiency (see Figure 1). A pig farm with 300 sows has raised such a problem: Professor Liu, I have a strange phenomenon on the farm. In the past, the sow gave birth to a barrel of birth clothing. Now the sow has only half a barrel of birth clothing, which is why ? Starting from this issue, we carefully observed the performance of sows at the time of farrowing, and found that the birthplace and amniotic fluid were significantly reduced. From this we infer that a very important reason for the emergence of dystocia in sows today is the problem of insufficient amniotic fluid. Insufficient amniotic fluid Even if the birth canal is not sufficiently lubricated, the birth canal is prone to dystocia due to dryness.

(4) Organs dysfunction is another important cause of long labor process. During investigations and inspections on pig farms, we found that sows showed marked redness of the eyes, reddening of the conjunctiva, and blepharospasm, resulting in “tear spots” and “panda eyes. "The situation is becoming more and more common, and sows are very apt to pull "lime urine" ie proteinuria. According to traditional Chinese medicine theory, "the kidney is the root of yin and yang," "the kidney is the main body and fluid, and the upper eye is moist," and "the kidney is full of sperm and is visually astute." Insufficient kidney essence results in impeded growth and development and diminished reproductive function; "Outside of the liver also", "the liver and anger and red eyes and swelling," the lack of liver yin and blood and blurred vision, dryness, the performance of kidney deficiency, dark circles and so on; "the lack of lung, resulting in loss of support from the eyes, the dim is unknown." The organs are dysfunctional and the immunity is low. It is not surprising that there is a long period of labor.

(5) The cause of dystocia may also be due to malposition of the fetus (see Figure 2) or the fetus is too large.

2. Oxytocin indications and contraindications

Oxytocin is mainly used for human or singleton animals such as cows and horses, but it must be a single child, that is, a child can only be a fetus before using oxytocin. The main contraindications of oxytocin are: too narrow pelvis, obstructed birth canal, apparent cephalopelvic disproportion and abnormal fetal position, history of caesarean section, history of uterine fibroids removal and umbilical cord exposure or prolapse, placenta previa, fetal distress , Too much contraction, lack of long-term use of uterine inertia, prenatal bleeding (including placental abruption), multiple pregnancy, uterus is too large (including polyhydramnios), severe pregnancy-induced hypertension syndrome.

From the contraindications of oxytocin, it can be seen that oxytocin is contraindicated in multiple animals, and sows have at least two fetuses per fetus, which means that oxytocin is not suitable for sow midwifery at all.
3, the use of oxytocin in sows will bring a series of bad results, mainly in the following areas:

(1) For multi-animal births with limited function, it is easy to cause dystocia. Once oxytocin is used, it can cause severe contraction of the uterus. Almost all of the amniotic membrane rupture causes a one-time outflow of amniotic fluid, but the amniotic fluid flows out quickly, and the birth canal is prone to dryness, resulting in dystocia. Occasionally, piglets cannot be produced after using oxytocin. At this time, artificial midwifery is performed, hands are inserted into the birth canal, and the hand is stretched out. The cervix is ​​closed or the birth canal is edema; After Miyasusu, the result may be: A piglet is stuck in the mouth of the cervix and cannot be moved forward or backward. At this time, the piglet is pulled out with great force. Even if the head of the piglet is torn off, the piglet cannot be completely recovered. Seriously damaged sows in the birth canal cause massive bleeding in the uterus and are often prone to death.

(2) Significantly increase the occurrence of white cats and piglets suspended dead and weak (see Figure 3). In the actual production of sows, the general pig farm began to use oxytocin after sows produced 1-5 piglets, causing severe contraction of the uterus, the unstimulated fetus in the uterus is too crushed, easy to cause umbilical cord rupture, Once the umbilical cord has not been produced and the piglets that have not been produced are often suffocated in the uterus due to lack of oxygen, the use of oxytocin can significantly increase the incidence of white litters, boar deaths and weak fetuses.

(3) Significantly increased sow pain, slow recovery of postpartum sow physical strength, appetite, lactation and physical fitness. After the use of oxytocin, it can significantly increase uterine contractions, causing sore soreness, apparent trembling and muscle spasms. Even some sows can experience painful shock and die on the spot (see Figure 4). Some pig farms once asked me a question: Professor Liu, why did my sow shiver in the summer when she was alive? I asked them if they used oxytocin. They said they used it.

(4) The loss of colostrum (see Figure 5) can easily lead to yellow and white piglets (see Figure 6) or death. After oxytocin is released, it often appears that the colostrum flows out of the breast and the ground is white. Newborn piglets do not have immunity and must rely on colostrum to obtain strong passive immunity. The sows are now physically declining. The quality of the colostrum is not necessarily good and the amount is not necessarily sufficient. If the piglets do not have colostrum within the prescribed time, the current level of feeding and management is not alive. Without enough colostrum, the passive immunity of piglets is not strong enough, so the problem of yellow and white piglets is very likely to occur during lactation.

(5) Caused the sow's self-purification function to decline, and the uterus could not be well restored. Due to overuse of oxytocin, it can easily cause severe contraction or spasm of the uterus muscles, resulting in dry birth canal, painful edema of the birth canal, and premature closure of the cervix. It is very easy to bet on the unborn fetus, the placenta, and even lochia in the womb. . The survey found that some sows on some farms were able to produce fetuses on the second day, the seventh day, and the longest postpartum 17th day, which clearly showed that the sow's self-purification function was reduced, and that the sows used oxytocin in pig farms. About 10-30% of sows still have placenta (see Figure 7, Figure 8, Figure 9), lochia or stillbirth (see Figure 10) left in the uterus, this part of the sow is very easy to scrap.

In summary, oxytocin can not be used for sows at all, and can significantly improve the abnormal elimination of sows and the occurrence of false deaths and weak litters in sows and resolutely eliminate the use of them.

4, to solve the difficulties of production ideas and programs

(1) The idea of ​​solving dystocia: Strengthening feeding and management, strengthening reproductive nutrition and strengthening exercise are the basis, and the problems can be solved by focusing on the following aspects: Sow dystocia can be solved:

1 increase amniotic fluid, blood circulation;

2 promote uterine contraction;

3 strong analgesia, painless childbirth or childbirth pain;

4 strengthen self-purification function, promote uterine recovery;

5 overall conditioning, anti-inflammatory antibacterial and restore appetite.
(2) Solution:

1 increase amniotic fluid, blood circulation: each sow 3 days before childbirth with postpartum Kang Yi Bao or perinatal Kang 100ml, fed three days;

2 promote uterine contraction, strong analgesia, painless delivery or childbirth pain, strengthen self-cleaning function, promote uterine recovery: after birth, or after the output of a piglet, use Gong-50 to 50 mL of uterine perfusion;

3 overall conditioning, anti-inflammatory antibacterial and restore appetite: with Zotter 30mL + animal source 20mL in the litter process infusion.

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