Mama cow giving birth to a calf
WildFilmsIndia
2015-05-14
Views 47
Blood and gore all right, but this is a real birds and bees story, fit even for kids to watch. How a cow is born. Getting down to basics.
See the result of the affections of our thin cow when it mated.
The signs of parturition (birth process) are:
The udder of the cow enlarges 1 to 2 weeks before calving. This is not a reliable sign in heifers as their udders begin to develop half way through pregnancy.Colostrum is produced (a creamy or pink secretion from the udder). Then pelvic ligaments relax and finally vulva swells (up to six times its normal size) and becomes flabby. White, stringy mucous is secreted from the vagina.
The birth process can be divided into three stages:
The muscles of the wall of the uterus begin to contract. These contractions occur about every 15 minutes and last from 15 to 30 seconds. This stage may last 3 to 4 hours. The cow will become restless, stand alone, and occasionally strain weakly. The foetal membranes enter the vagina and pass on to the vulva where they appear as the 'waterbag'. This waterbag soon ruptures . By this time, the head and forelimbs of the calf enter the cervix; dilating it so that the cavity of the uterus becomes continuous with the vagina.
During this second stage, the calf enters the vagina causing stronger contractions from the diaphragm, abdominal muscles and uterus. The cow may stand or lie down and strain for 10 to 15 seconds every 2 minutes. When the calf's feet reach the vulva, a second membrane ruptures which lubricates the passage for the head and body. As the forelimbs appear the cow may rest before expelling the calf completely.
This final stage begins immediately after the calf has been expelled. The uterus contracts rapidly which causes the afterbirth to separate from the uterus. The contractions force the membranes through the cervix into the vagina and eventually through the vulva. The afterbirth (placental membranes) is usually expelled shortly after the calf is born but can take several days.
See the result of the affections of our thin cow when it mated.
The signs of parturition (birth process) are:
The udder of the cow enlarges 1 to 2 weeks before calving. This is not a reliable sign in heifers as their udders begin to develop half way through pregnancy.Colostrum is produced (a creamy or pink secretion from the udder). Then pelvic ligaments relax and finally vulva swells (up to six times its normal size) and becomes flabby. White, stringy mucous is secreted from the vagina.
The birth process can be divided into three stages:
The muscles of the wall of the uterus begin to contract. These contractions occur about every 15 minutes and last from 15 to 30 seconds. This stage may last 3 to 4 hours. The cow will become restless, stand alone, and occasionally strain weakly. The foetal membranes enter the vagina and pass on to the vulva where they appear as the 'waterbag'. This waterbag soon ruptures . By this time, the head and forelimbs of the calf enter the cervix; dilating it so that the cavity of the uterus becomes continuous with the vagina.
During this second stage, the calf enters the vagina causing stronger contractions from the diaphragm, abdominal muscles and uterus. The cow may stand or lie down and strain for 10 to 15 seconds every 2 minutes. When the calf's feet reach the vulva, a second membrane ruptures which lubricates the passage for the head and body. As the forelimbs appear the cow may rest before expelling the calf completely.
This final stage begins immediately after the calf has been expelled. The uterus contracts rapidly which causes the afterbirth to separate from the uterus. The contractions force the membranes through the cervix into the vagina and eventually through the vulva. The afterbirth (placental membranes) is usually expelled shortly after the calf is born but can take several days.
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