Abstract
The third stage of birth is placenta expulsion which can occur about 30 minutes after the release of the fetus but is more likely to occur between 180 to 300 minutes later. This research is expected to provide an understanding about the different time on placenta expulsion, the number of cotyledon and placenta weight that faced up by veterinarian. Cows with a body condition score between 2.5 to 3.5 and ready to give birth from various breeds were used in this study. The results showed that young cows (<5 years old; 366,50 ± 30,97 minutes) significantly had a longer placenta expulsion time than old cows (>5 years old; 251,29 ± 7,55 minutes; p<0,05). While the amount of cotyledon and placenta weight did not differ between the two age groups. Based on breeds, the young Ongole cows showed significant different on placenta expulsion time compared with old ones (397,25 ± 61,60 vs 250,80 ± 14,79 minutes; p<0,05) but had no difference with the young and old crossbreed cows. Young cows need more time for placenta expulsion than the old ones and the young Ongole cows take the longest time compared to other age and breed groups.
Highlights
Birth or parturition is a physiological process associated with the production of fetuses and placentas from the mother [1]
The remains of the placenta and umbilical cord hanging on the lips of the vulva are heavy enough to pull the placenta out of the uterus [4]
The age of the farm was based on the last artificial insemination record (AI) recorded on the AI card
Summary
Birth or parturition is a physiological process associated with the production of fetuses and placentas from the mother [1]. Uterine and abdominal contractions continue but uterine contractions are not as strong at the stage of fetus production This contraction of the uterus is not accompanied by contractions of the abdominal musculus and diaphragm. The separation of the placenta occurs at a time when the decrease in volume and contraction of the uterus that causes the endometrial crept (where the villi of the placenta is linked) to become superficial. This causes the placenta's villi to detach and bring the placenta closer to the cervix. That high livestock production figures can be achieved so that the objectives of meat self-sufficiency programs can be achieved and can be obtained maximum profit for farmers
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