Infant feeding

Attachment is the two-way bond that develops between you and your baby as you communicate with each other by touch as well as talking. Strong attachment helps your baby's brain to grow, particularly the part of the brain that is important for communicating and forming relationships with others. Your baby feels safe, secure and loved and so learns to love others.

Feeding is a really important time for developing this bond whether you choose to breast or bottle feed. It isn't just about giving your baby energy to grow into a healthy child and adult. Responsive feeding describes how you recognise and respond to your baby's hunger signals or 'cues'. Hold your baby close to you, make eye contact and talk in a loving way. Learn to understand when your baby is no longer hungry and trust your baby's feeling of fullness. Sometimes your baby will only want to feed for a few minutes, sometimes for much longer, in the same way we sometimes just want a drink and a quick snack and at other times a three course dinner!

There are a few differences between responsive breast and bottle feeding:

Responsive breastfeeding

• a baby will not breastfeed if they do not want to, so it is fine to offer the breast whenever you or your baby wish, including when your baby seems distressed. Breastfed babies are in control of their feeding and cannot be overfed or 'spoiled' by frequent feeding. A sit down and a cuddle, even if they do not take much milk, will help your baby develop trust and security.
• On the other hand parents often worry that they do not know how much milk a breastfed baby is taking. Part of this is learning to trust your body and to trust your baby to know what they need. You should expect support from your midwife and health visitor to learn how to know your baby is feeding well by knowing, for example, how many wet & dirty nappies to expect.

Responsive bottle feeding

• When a bottle is put into your baby's mouth, milk comes out of the teat with little or no effort from the baby. As the milk touches the back of the tongue, it triggers the swallow reflex and your baby has to swallow the milk to avoid choking. It is easy to interpret this as a signal that your baby is definitely hungry. For this reason it is very easy to over-feed a baby from a bottle whether it contains formula or expressed breastmilk. this puts your baby at risk of gaining too much weight.
• So it is important to recognise when your baby is getting full. This is easier to do by "pacing". This means letting your baby pause every few sucks to see if they want to stop feeding, taking the bottle out of your baby's mouth and then only starting again if they draw the teat into their mouth themselves. Never force the teat into your baby's mouth or keep trying to feed if your baby turns their head away or pushes the teat out with their tongue. If the bottle is still half full so be it.
• To help attachment keep the number of people who feed your baby to a minimum - ideally just you and your partner or one other close family member.

Responsive feeding of expressed and formula milk:

• Hold your baby close to you, look into their eyes to help them feel safe and loved.
• Hold your baby fairly upright, with their head supported in a comfortable, neutral position.
• Rub the teat gently against your baby's lips to encourage them to open their mouth wide and draw the teat into their mouth. Do not force the teat into your baby's mouth.
• Hold the bottle level, in line with the ground (horizontal), and then tilt the bottle upwards enough to ensure your baby is taking in milk and not air through the teat.
• Babies feed in bursts of sucking, swallowing and short rests. As your baby is in a fairly upright position, when they pause for a rest the milk will stop flowing allowing them to decide when they are ready to start sucking again.
• During the feed you will see bubbles in the bottle. If you can't see any bubbles, break the suction between your baby's tongue and the teat by moving the teat slightly to the side of their mouth. You should then see bubbles rushing back up into the remaining milk.
• Interrupting the feed from time to time gives your baby a chance to register how full they are and allows them to control what they want. It also gives them the chance to bring up any wind.
• Try to keep the number of people who feed your baby to as few as possible. If another close family member gives an occasional feed, make sure they use the same technique as you so that your baby does not feel frightened or confused.
• Your baby should always be held and never left unattended while feeding from a bottle.
• Do not try to make your baby finish the bottle if it is clear they have had enough.
• Do not use a fast flow teat as babies can find it difficult to control their breathing if they are forced to swallow large volumes of milk quickly.

TOP TIP when bottle feeding:

Hold your baby in an upright position and keep the bottle more horizontal rather than facing downwards. Stop the feed regularly to give your baby a rest.

Look for early feeding cues. They may start to wriggle when they wake up, find something to suck especially with their hands. Crying is a late sign and you may need to soothe your baby before trying to feed. Remember crying does not always mean your baby is hungry. They may want a cuddle or need their nappy changing. They may have drunk too much and feel uncomfortable or are feeling unwell.

• Your baby's stomach is very small in the first few days and they will only want small amounts of milk at each feed.
• Breast fed babies control the amount of milk they take from the breast. The health professional looking after you will be able to help guide you to recognise that your baby is taking enough milk.
• Babies being bottle fed are given the milk so are at risk of being over fed. Remember they have a small stomach and your baby will probably want to have small amounts but more often than when they are older.
• Bringing up small amounts of milk is normal and is usually a sign that your baby has had enough milk for that feed. Speak to your health professional for advice if you are unsure.

Pace the feed:

• A breast fed baby will usually be able to control how much milk they want and will stop taking milk when they are full.
• A bottle fed baby is not always able to do this and you will need to control the amount of feed you give your baby. Use the pacing technique mentioned above to help you judge this.

Overfeeding bottle fed babies:

• Overfeeding your baby can make them be sick and put on too much weight.
• Feeding your baby large amounts does not mean they will sleep for longer between feeds. In fact, it can make them more uncomfortable and less able to settle.
• Overfeeding your baby in these early weeks can increase their risk of being overweight as a child and adult.

Size and volume of a newborn's stomach

Did you know? this picture shows the approximate size of your baby's stomach and how much milk it can hold at each feed.

• Day one - size of a cherry 5-7ml/0.2oz
• Day three - size of a walnut 22-27ml/0.75-1oz
• One week - size of an apricot 45-60ml/1.5-3oz
• One month - size of a large egg 80-150ml/2.5-5oz

The first breast milk your body makes is known as colostrum. This is the perfect source of nutrition for your baby because it:

• contains antibodies which protect your baby from infection and help their immune system to develop.

• helps your baby’s digestive system to develop, which protects your baby from allergies.

• encourages your baby to open their bowels and pass ‘meconium’ (your baby’s first black sticky poo) which reduces the risk of jaundice. Colostrum is very concentrated. At birth, a baby’s stomach is about the size of a marble, so they will only need a small amount of colostrum to receive all the nutrients they need.

Colostrum harvesting

During your pregnancy, your breasts will start to produce colostrum (the exact timing varies from person to person). You can collect and freeze this milk during the last few weeks of your pregnancy. This is known as ‘colostrum harvesting’. Harvesting your colostrum will be especially beneficial for your baby if they are likely to have difficulties with feeding or maintaining their blood sugar levels during the first few days after birth.

This may be because your baby:

• is large or small for their gestational age

• is a twin or triplet

• has a cleft lip or palate

• has Down’s syndrome or a heart complication

Colostrum harvesting can also be beneficial for your baby if you:

• are taking beta blockers to control high blood pressure

• have developed pre-eclampsia during pregnancy

• are diabetic or have developed diabetes during pregnancy

• have polycystic ovary syndrome

• have breast hypoplasia (a condition in which the breast doesn’t fully develop) or you have had breast surgery

• have a raised body mass index (BMI)

• plan to give birth by Caesarean section

If your baby needs extra feeds, you may be able to use your colostrum instead of formula milk.

Before you start colostrum harvesting

You may be advised not to harvest your colostrum if you:

• have a cervical suture (stitches) in place

• have experienced premature labour in the past

• have had contractions, vaginal bleeding and/or premature rupture of membranes (your waters breaking early) during this pregnancy

We would recommend reading a helpful booklet called ‘Off to the best start’ which explains the technique for hand expressing breast milk in more detail. Ask your midwife for a free copy or download it from the NHS Start 4 Life website: www.nhs.uk/start4life/breastfeeding-more-help

How to start colostrum harvesting

If you would like to harvest your colostrum, you can start hand expressing for a few minutes once a day when you are 36 to 37 weeks pregnant. Gradually build up to gently expressing for about five to ten minutes at a time, two to five times a day, and then as often as necessary in the first few days after you give birth. If your baby is premature or unwell, you will be encouraged to start expressing within two to three hours of giving birth.

You can harvest your colostrum while you’re pregnant by hand expressing in the same way that you will express milk when your baby is born. While you’re pregnant you should only use your hands for expressing. Do not use a breast pump until after you have given birth.

Hand expressing your colostrum

1. To collect your colostrum you will need a clean, sterilized syringe and a clean, sterilized larger container.

2. Make yourself comfortable and try to relax. Warmth will help, so try expressing in the shower or bath at first. You can gently massage your breasts with a warm flannel.

3. Use your hand to cup one of your breasts. Your hand should be in a ‘C’ shape around the nipple with four fingers under the breast and the thumb at the top. Your thumb and fingers should be about 2-3cm away from the base area around the nipple.

4. Use your thumb and index finger to gently squeeze. Release the pressure and then repeat to create a rhythm. This shouldn’t hurt. Avoid sliding your fingers over your skin as this may cause discomfort. If the colostrum doesn’t flow, try moving your fingers slightly towards the nipple or further away, finding the spot that works best for you. You could also try gently massaging your breast.

5. Collect your colostrum with the sterilised syringe and if necessary decant to the larger sterilised container. Colostrum is very concentrated and will come out of your breast drop by drop. At first, only a few drops will come out at each session, but with practice and time, you should get more.

6. When the drops slow down, move your fingers round to try a different section of your breast and repeat.

7. Repeat the process for your second breast. The amount of colostrum you collect when you express can vary from just a few drops to a teaspoon full. Every drop counts, so don’t lose heart if you feel you haven’t collected much colostrum. This doesn’t mean your baby will find it difficult to breastfeed.

Patient information factsheet: www.uhs.nhs.uk

It is very rare for colostrum harvesting to cause the onset of labour. You may feel your womb tightening and relaxing. This is called a Braxton Hicks contraction and isn’t a cause for concern. If you begin to feel ‘period-like’ cramps or mild labour contractions, stop expressing, rest and then start again slowly.

Storing your colostrum

• Label the syringe or container with your name and the date and time you expressed the colostrum.

• Put the syringe or container in a clean re-sealable bag and place it in your freezer– it can be stored for up to two weeks in the ice compartment of a fridge (-6°C) or for up to six months in a proper freezer (-18°C)

• You can store your colostrum or milk in the back of the fridge at a temperature of 2-4°C for up to 24 hours before you freeze it.

• Colostrum or breast milk that has been frozen can be defrosted in the fridge. It must be used within 24 hours.

• Fresh colostrum / breast milk that has only been stored in the fridge (4°C ) must be used within five days.

You can express and freeze your colostrum at home and bring it into hospital when you have your baby.

To bring your colostrum into hospital you will need:

• re-sealable food bags

• a small cool bag

• two large ice blocks

When you go into hospital to have your baby, put a few of your (labelled) frozen syringes into a re-sealable food bag. Place this inside the cool bag between the two ice blocks.

Tell your midwife that you have colostrum with you when you arrive. It will be labelled with the date and time it was removed from your freezer and stored in the hospital fridge or freezer.

Feeding your baby with colostrum

Some newborn babies are unable to feed well at the breast and others are unable to maintain the necessary blood glucose levels. In these situations you can feed your baby with your colostrum. Your midwife will take your colostrum out of the hospital fridge or freezer and check the label with you first. The syringe of colostrum will need to be brought to room temperature. You could immerse a plastic bag containing the syringe of colostrum in a bowl of warm water or place it next to your skin. Your midwife will show you how to feed your baby with a syringe or a small cup. Having a small feed will give your baby energy and increase their blood sugar levels. It often encourages babies to breastfeed well.

Useful links

www.nhs.uk/start4life/breastfeeding-more-help

Patient information factsheet

www.uhs.nhs.uk

We hope this information will be a useful introduction to colostrum harvesting. You can also talk to your midwife who will be able to answer any questions you may have.

• If you are planning continue breast feeding as well, avoid giving your baby a teat until breastfeeding has been established, as sucking on a teat uses a different sucking action. This may cause confusion for your baby, who may then find it difficult to feed from the breast.
• Always wash your hands before preparing any feed, expressed breast milk or formula
• Always follow the manufacturer's instructions for your chosen sterilising method
• Make up on bottle of formula feed at a time as per Department of Health Guidelines
• Do not add extra scoops of formula to a bottle

For more advice and information see:

• www.unicef.org.uk/babyfriendly/baby-friendly-resou...
• www.firststepsnutrition.org/

Breastfeeding

This is the easiest way to feed your baby when out and about. You do not need to take any equipment with you, just yourself. Breast milk is the correct temperature, amount and no preparation required.

How do I re-heat my expressed breast milk?

From the fridge

• Your expressed breast milk can be used straight from the fridge.
• Warm your milk gently by placing the container in some warm water.
• Try not to overheat your milk.

From the freezer

• Try to defrost your breast milk in the fridge and use it within 12 hours of removing from the freezer.
• If you need to use your breast milk quickly, and it is still frozen, place the container under cool, then warm, running water.
• Use your defrosted milk immediately

We do not recommend using a microwave to warm any of your baby's milk or food. Microwave cooking causes hot spots which can burn your baby's mouth.

Did you know?

To support breastfeeding mothers to feel more confident to feed their baby in public, Breastfeeding Welcome Schemes are being introduced in many towns and cities. Private and public sector buildings are welcoming mothers to breastfeed their baby.

Remember you are protected by law to breastfeed in public.

Formula Milk

Pre made formula

This is the easiest way to feed your baby formula when out and about.

• Take an empty sterilised bottle with you and transfer the pre made formula.
• Pre made formula cartons/bottles can be stored in a cool bag with an ice pack and used within four hours once opened.
• To warm the milk, place the bottle in a container of warm water. Always test the milk on the inside of your wrist to make sure it is not too hot for your baby.

Powdered formula

• The best way is to take a good quality vacuum flask of boiling water with you.
• A full flask of 17.5oz (525mls) of boiling water should stay at 70 degrees celsius for three hours. There is evidence that smaller amounts of water might not stay at the required 70 degrees celsius and therefore not kill any bacteria in the powder.
• Add the correct amount of water to the pre sterilised bottle and add the correct amount of powdered formula.
• Cool the feed before giving it to your baby.

Formula Preparation Machines

At present there is no published research and insufficient evidence that these machines are safe in preparing infant formula. The Department of Health recommend that powdered infant formula is made up with freshly boiled water and left for no more than 30 minutes so that it remains at a temperature of at least 70 degrees.

Children and adults are all shapes and sizes, most of which are healthy. In this section we want to explain the growth charts and help you understand what you can do to help your baby grow up healthy and happy.

In your Personal Child Health Record (PCHR) you will find growth charts. Do read the information pages that come with them. The chart describe the growth patterns of thousands of normal, healthy, breastfed babies and toddlers from around the world and older children from the UK. Healthy bottle fed babies should follow the same growth patterns as breastfed babies. The lines are called 'centiles' and they simply describe how your baby's weight, length and head circumference compares with other children of the same age and sex. For example - if your baby's weight is on the 25th centile this means that if you weighed 100 babies of the same age and sex and ranked them from light to heavy, 75 babies would be heavier than yours and 24 lighter. We expect a baby to gain weight along one of these centiles or in their own channel between two of the centile lines. Which centile is healthy for your baby depends on where they started out - their birth weight - and factors they inherit from their parents . There is no 'best' centile. There will be variation above and below their centile and it is wise not to weigh and measure babies too often because these natural fluctuations can cause unnecessary concern - what matters is the pattern over time. Usually no more than monthly weighs are necessary for the first six months, every two months from six months to a year and every three months after that; unless there are particular concerns and your health care professional requests that you have your baby weighed more often for a period of time.

Generally speaking a healthy baby's length and weight will be 'in proportion' i.e. will have their length and weight within one of the major centile lines of each other and certainly no more than two.

Weight Problems

Weight is fantastic for assessing the health of a baby. Crossing the centiles up and down may be a cause for concern. Historically most emphasis has been on monitoring babies who appear to be gaining weight too slowly - and your midwife and health visitor will watch out for this. It is likely to become apparent quite early on and the most common cause is difficulties with feeding. It is normal - and healthy - for a baby to lose some weight in the first few days of life and only is this exceeds 10% will your midwife be concerned. There is some evidence that this early weight loss helps 'set' appetite and feeding patterns for the rest of the child's life. These days poor weight gain is pretty rare and for this generation we are much more worried about babies who cross the centiles upwards across the chart because this is very unlikely to be healthy. The illustration shows several typical patterns of weight gain - healthy and unhealthy.

Growth Chart:

This is never and easy topic to broach but it is, without doubt, the most worrying risk to the future health and happiness of your baby. The research evidence is absolutely clear:

• Eating and activity habits and food preferences start to develop early in life - in the first few days and weeks
• Overweight and obesity impair normal childhood development
• Overweight babies and toddlers are at least five times more likely to be overweight at the age of 12 than those who were a healthy weight in infancy
• Child obesity tracks into adulthood - at least 70% of obese children, even those as young as 5 years, will go on to become obese adults
• Obese children are at greater risk of serious long-term health problems, including heart problems, Type 2 diabetes and various cancers. We are now seeing conditions that were previously unheard of in children and teenagers such as Type 2 diabetes, early signs of fatty liver disease (the commonest cause of irreversible liver disease) and clogging of the arteries
• The emotional consequences of obesity in childhood can be severe and long-lasting, including bullying, low self-esteem and social exclusiong
• Rather than trying to manage children and teenagers who already have weight problems we want to help you prevent your baby becoming one of the 25% (1 in 4) who are overweight or obese when they start school in contrast to the less than 1% (1 in 100) who are underweight. Obesity prevention is one of the key targets of the Healthy Child Programme.

Do' and don'ts to help prevent your baby becoming overweight or obese:

Do:

• Breastfeed
• Remember responsive feeding
• Understand your baby's feeding cues
• Only give your baby milk to drink
• Understand the growth charts
• Let us help with your efforts to prevent your baby becoming overweight

Don't:

• Give your baby more milk if they drain their bottle. When you finish your dinner it doesn't mean you want another one!
• Give your baby plenty of milk during the day hoping that they will sleep through the night sooner - they won't
• Start solids before six months
• Reward with sweets and treats
• Forget activity - this is a really important factor and the earlier you can get your baby active the better. However it is very difficult to control weight simply by increasing activity.
• Feel guilty if your baby becomes overweight - we know that the earlier it is spotted the better the chances of success in helping your baby return to a healthy weight
• Think we think this is easy! Being a parent is rarely straightforward but your are responsible for what your child is allowed to eat and drink - by you or other carers

Myths about weight:

'Obesity is inherited' - No it isn't. The obesity 'epidemic' has developed over the past 20 years but our genes haven't changed in that short time - they have generations to alter. Instead our lifestyles have altered and eating behaviour tends to run in families. Try to make your family healthier - it's worth it

'Breastfed babies cannot becomes overweight' - Yes they can. It is much rarer but happens. The longer you breastfeed the lower the risk. Breastfeeding is only partly protective and the choices you make about starting solids, the portion sizes, the foods you offer and swapping to bottle feeding will all have an impact.

'My baby is always hungry' - No, they aren't. Many families describe this and are tempted to either give up breastfeeding, try milks for hungrier babies (which are unnecessary) to introduce solids too early. Remember that babies cry for all sorts of reasons and it is important to recognise the difference between hunger cues and a baby who is crying about something else. Provided your baby is growing and gaining weight along their centiles they do not need any extra calories.

'My baby will slim down when they start exercising' - This is unlikely. Feeding habits start to develop in the first days and weeks of life. Not only are babies who are overweight at a year of age highly likely to be overweight when they start school, but they also have higher blood pressure. Yes - health differences even at a year!

'A big baby is a healthy baby' - Only if designed to be. We come in all shapes and sizes. It does not matter where your baby is on the growth charts provided they are not crossing the centiles up or down and their weight is within one major centile of their length. There is no 'best' centile. Encouraging your baby to cross the centiles upwards is rarely healthy even for a baby born small.

'We are a big-boned family' - Body Mass Index (BMI) allows for this. BMI is a simple index of weight-for-height that is commonly used in classifying overweight and obesity. Most of you will know that a healthy BMI for adults is somewhere between 19-25, a range which allows for some people having a larger frame or being 'big-boned' - this is not a reason for having a higher than healthy BMI. In growing children, the healthy range varies with age and there are BMI charts for children over two. Your health visitor can show you these.

Babies just need breastmilk or an appropriate first infant formula for around the first six months of life. From six months they are likely to to start showing the signs of readiness for the introduction of solids alongside breast milk or formula.

Sometimes families think that a baby who is waking in the night when they have previously slept through, wanting extra milk feeds or chewing their fists is ready for solids. These are just normal behaviours when a baby grows and develops, not signs of hunger.

Even if your baby is bigger than other babies of a similar age, it doesn't mean they will need to start solids any earlier than six months.

If you think your baby is ready for solid foods before six months, or before all three illustrated signs appear, it is a good idea to talk to your health visitor or health care professional first.

Babies need to be included in meals with you and your family as soon as they start to eat solid foods. There is no need to make special foods for babies. Babies learn about enjoying food & how to behave at mealtimes by watching those around them. Being overweight often runs in families and this is thought to be at least partly due to the eating behaviours they see at home. It is important to try and set a good example to your baby by giving them lots of opportunities to try a wide range of healthy foods.

Sometimes babies need to try a new food several times before they accept it, so do not worry if your baby spits out foods to start with. Never force your baby to eat - just as with milk feeding, your baby needs to understand when they have had enough so they do not put on too much weight.

For further information about starting your baby on solid foods see:

• www.unicef.org.uk/babyfriendly/baby-friendly-resou...
• www.firststepsnutrition.org/

Your baby is ready if they can:

• Stay in a sitting position and hold their head steady
• Co-ordinate their eyes, hands and mouth so that they can look at the food, pick it up and put it in their mouth all by themselves.
• Swallow food. Babies who are not ready will push their food back out, so they get more round their face than they do in their mouths.

NOTE: It's rare for these signs to appear together before six months.

When the time comes for you to return to work, it is beneficial for both you and your baby if you are able to carry on breastfeeding, even some of the time. You will both continue to get the health benefits from breastfeeding as well as being able to continue to get the health benefits from breastfeeding as well as being able to continue to enjoy that special closeness that it brings - it is a lovely way to be reunited when you are together again at the end of your working day. It is worth thinking about how you will manage this several weeks before you go back to work and you can get help with this from your health visitor or from the following:

• www.unicef.org.uk/babyfriendly/baby-friendly-resou...

Don’t be afraid to ask for support and information to help you with feeding. No problem is too small – if something is worrying you, the chances are that other parents/carers will have felt the same. Your midwife, health visitors or a breastfeeding counsellor to help you position your baby may help boost your confidence and improve feeding for you and your child. For more information on how to contact your local Health Visiting team please click here.

For more advice and information see:

• ttps://www.unicef.org.uk/babyfriendly/baby-friendly-resources/
• www.firststepsnutrition.org/

Click here to download a PDF of the Healthy Infant Feeding Booklet

We encourage all new mums to breastfeed their babies. If your baby is finding it difficult to breastfeed, you will be shown other ways of giving your baby breastmilk.

Expressing your breastmilk by hand, for example, will ensure a good milk supply for your baby. You can give your breast milk using a small, 1ml (millilitre) sterilised syringe or a sterilised feeding cup, depending on the amount of milk you are giving your baby.

(look for the '1ml' line on the syringe)

Syringe feeding

Syringe feeding should be used during the first

few days when you need to give your baby small amounts of colostrum or breast

milk (less than 3 to 5 mls).

How to syringe feed your baby

Please wash and dry your hands thoroughly before you start.

You need to hold your baby in an upright position and gently syringe no more than 0.2mls (millilitres) into your baby’s mouth at a time. Feed the milk in between their gum and cheek or onto their tongue. Allow your baby to swallow before giving them another 0.2mls (millilitres) and continue to do this until the feed has ended.

(Look for the '0.2ml' line on the syringe)

Cup feeding

A feeding cup should be used when your baby needs to have feeds greater than 3 to 5mls (millilitres).

In order to protect breastfeeding, it is beneficial to use a cup rather than a bottle with a teat.

Cup feeding encourages your baby to use their tongue and lower jaw in a similar way as they would when breastfeeding. They are also able to smell and enjoy the milk when using a cup.

How to cup feed your baby

Please wash and dry your hands thoroughly before you start, and use a pre-sterilised, once-only cup at each feed.

Wrap your baby securely in a blanket to keep its hands out of the way so that it does not knock the cup out of your hands.

Sit your baby in an upright position on your lap to prevent choking and place a bib around your baby’s neck.

Place the cup so that it is gently resting on your baby’s lower lip. Do not press it down. The cup should be tipped so that the milk touches your baby’s lip. Wait and your baby will sniff the milk, push their tongue forward and start to lap or drink the milk.

Do not tip the milk into their mouth as this may cause them to choke. Keep your baby sat upright and the cup still. Do not move the cup away when they stop drinking.

Your baby will drink at their own pace with breaks when they will have a breather. At the end of the feed they may close their mouth to show that they have finished.