Beef Calves. Most beef calves nurse from their mothers until weaning. When you separate and wean one depends on various factors, including forage availability and the cow's condition. If milk production is severely stressing the mother, earlier weaning is in order.
Perhaps the most significant one a baby hears in utero is his mother's voice. Around the seventh and eighth month, a fetus's heart rate slows down slightly whenever his mother is speaking, indicating that mom's voice has a calming effect. By the time they're born, babies can actually recognize their mother's voice. In one study, doctors gave day-old infants pacifiers that were connected to tape recorders. Depending on the babies' sucking patterns, the pacifiers either turned on a tape of their mother's voice or that of an unfamiliar woman's voice.
At 16 weeks the unborn baby is particularly receptive to its motherâs voice. This is because the vibrations that travel through her body to the womb are stronger than noises coming from outside the womb. At 20 â 24 weeks, the unborn baby can recognise the deeper tones of its father's voice. Around 24 weeks. Babies develop preferences for music while in the womb. Fridman (2000)[ 3 ] found that the babiesâ heart rates increased and that they moved around in rhythm to the music.