Foal Pathologies In Mares

Foal Pathologies In Mares
Foal Pathologies In Mares

Video: Foal Pathologies In Mares

Отличия серверных жестких дисков от десктопных
Video: Nice animation of a mare giving birth 2023, February
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The main reasons for the retention of the fetus in the uterus during foaling are: weak contractions, violent attempts, spasm and incomplete opening of the cervical canal, emphysema of the fetus, narrowing of the cervix, oligohydramnios, twisting of the uterus, improper placement of the fetus in the birth canal.

Childbirth in all mammals is a physiological act that does not require human intervention. Before foaling, the mare refuses food, worries, looks back at her stomach, sweats, often gets up and lies down, takes a urination posture. When the harbingers of childbirth appear, walks are stopped, the tail is bandaged. Although the foal passes relatively quickly, it requires excessive effort, and after the birth of the foal, the mother remains exhausted for half an hour.

Mare and newborn foal, photo photograph
Mare and newborn foal, photo photograph

The mare is tired, her genitals remain open, microflora can enter the uterus, therefore, it is necessary to maintain cleanliness and order in the stall during this period. Lochia (dark red and brown) stand out in small quantities until the third day of the postpartum period, and then acquire a yellowish tint. The expiration of lochia after the eighth day is regarded as one of the signs of subinvolution of the uterus. A week after the completion of the involution of the genitals, the reproductive cycles are restored and the horses are recruited to work.

The course of labor takes time, so premature intervention in this process is unacceptable. The first sign of childbirth pathology is fetal retention in the birth canal. There may be several reasons for this, and they all depend on both the mother and the fetus. Delayed release of the fetus through the fault of the mother in mares is not observed as often as in other animal species. The difficulties of foaling are inherent in primiparous individuals. Pelvic anomalies, as a developmental defect, are quite rare and are a consequence of rickets and deformation of the bone framework.

The main reasons for the retention of the fetus in the uterus during foaling are: weak contractions, violent attempts, spasm and incomplete opening of the cervical canal, emphysema of the fetus, narrowing of the cervix, oligohydramnios, twisting of the uterus, improper placement of the fetus in the birth canal.

Weak contractions in mares are relatively rare. However, in the absence of active movements, especially if there are abdominal and uterine hernias, soreness of the abdominal organs and overstretching of the myometrium, the force of contractions is insufficient for the fetus to exit. The protracted nature of the foal makes it necessary to eliminate its causes, prescribe uterine drugs (oxytocin, hyphatocin, pituitrin at a dose of 40-50 U intramuscularly) and extract the fetus after the obstetric loops are applied.

Newborn foal, photo photography
Newborn foal, photo photography

Violent attempts are accompanied by obstruction of the fetus due to volvulus of the head or limbs, lack of water, spasm and incomplete dilatation of the cervix. As soon as the fetus spasms in the cervix, blood circulation in the placenta is disrupted, which leads to its death. In this case, ruptures of the uterus and perineum, prolapse of the bladder are possible. Attempts are removed by wiring the mare or epidural-sacral anesthesia between the first and second caudal vertebrae in the amount of 15 ml of a 1.5% solution of novocaine with the addition of 2% adrenaline for a longer action. You can use sedatives and antispasmodics, for example, hanegif (10-15 ml intramuscularly).

Foal and foal of mares
Foal and foal of mares

Related article Foal and foal of mares

After removing the attempts, the incorrect articulation of the fetus is eliminated.

Cervical spasm is characterized by short-term closure of the cervical canal in nervously excitable young fillies. The degree of spasm is in direct proportion to the strength of the contractions. Incomplete disclosure of the cervical canal occurs due to premature rupture of the amniotic fluid, when intrauterine pressure drops sharply. The cervical canal is half-open. Its obstruction to the fetus is accompanied by violent attempts and lack of water. The woman in labor is provided with peace, water with a temperature of 43-45 ° C is poured into the vagina, heat is applied to the lumbar region and sacrum in the form of a bag of steamed dust. Subacrally administered 150 ml of 0.5% solution of novocaine.

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