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Unit C: Poultry Management
Lesson 1: Nutrients for Maintenance,
Growth and Reproduction
1
1
Terms
• Carbohydrates
• Fats
• Minerals
• Nutrients
• Proteins
• Vitamins
• Water
2
2
I. Nutrients are the chemical
substances found in feed
materials that can be used, and
are necessary, for the
maintenance, growth,
production, and health of the
bird.
A. The nutrient needs of poultry are
complex and vary by species,
breed, age and sex of the bird.
3
B. More than 40 specific chemical compounds
or elements are nutrients that need to be
present in the diet of the bird to support
life.
1. These materials are divided into six
classifications: water, protein, carbohydrates,
fats, vitamins, and minerals.
2. A good diet must include all six of these
nutrients in proper amounts.
3. If any are insufficient then growth,
reproduction, eggshell quality, egg production,
egg size and other factors may be affected.
4
II. Each of the nutrients completes a specific task
in the body.
A. Water is the most important nutrient required by
poultry.
1. Water is required for digestion and metabolism in
poultry and makes up about 55-75% of the bird’s body
and 65% of the egg.
2. Water intake is approximately two times the intake of
feed on a weight basis.
a. Water softens feed in the crop to prepare it for grinding in the
gizzard.
3. Many chemical reactions that take place in the bird’s
body require water.
a. Blood is about 90% water and helps transport the other
nutrients throughout the body as well as carry waste products
outside the body.
5
4. Just as in humans, water cools the bird’s
body through evaporation.
a. Birds do not have sweat glands so a major
portion of their evaporative heat loss
happens in the air sacs and lungs due to
rapid respiration.
5. If medications are to be given to poultry,
it is generally through the water.
a. Both the compound and water quantities
should be carefully and accurately measured
before giving them to the birds.
b. After medication has been administered,
the waterers should be emptied and rinsed.
6
B. Proteins
1. Proteins are made of amino acids.
a. The number and kind of amino acids
will determine the type of protein.
2. The main products of poultry are
composed of protein.
a. On a dry-weight basis, the body of a
mature broiler is more than 65%
protein and the contents of an egg are
about 50% protein.
7
3. The body of a bird does not need the
proteins so much as the amino acids.
a. Chicken tissues have the ability to make
some of the required amino acids if the
other amino acids are in adequate
supply.
4. No single feed source can supply all of
the amino acids so a mixture must be
provided.
a. The main sources of proteins for poultry
feeds are animal proteins such as fish
meal and meat and bone meal; and plant
proteins such as soybean meal and corn
gluten meal.
8
C. Carbohydrates (carbs)
1. Carbs make up the largest portion of a poultry
diet.
2. Carbs appear in greatest supply in plants in the
form of sugars, starches or cellulose.
a. Starch is the form in which most plants store energy
and it is the only complex carbohydrate which
chickens can readily digest.
b. Chickens cannot digest cellulose.
3. Carbs are the major energy source for poultry
but only ingredients containing starch, sucrose
or simple sugars are efficient energy providers.
4. Corn and wheat are important sources of carbs
in poultry diets.
9
D.Fats
1. Fats are an important energy source
because they contain twice as much
energy as any other feed ingredient.
2. Because of this trait, fats play an
important role in starting and
growing diets.
a. Fats make up more than 40% of the
dry egg contents and 17% of the dry
weight of a market broiler.
10
3.Fats are also important in the
diet because they help in the
absorption of certain vitamins.
4.Fats also provide essential fatty
acids.
a. Essential fatty acids aid in
membrane integrity, hormone
synthesis, fertility, and
hatchability.
11
E. Minerals
1. Minerals are divided into two classes:
macrominerals (those needed in large
amounts) and micro- or trace minerals.
a. While trace minerals are only needed in small
amounts, a deficiency in any of them could result in
poor production.
2. Minerals complete many important functions in
the poultry body.
a. It is most important in the formation of bones.
b. Laying hens also require calcium for eggshell
formation
c. Minerals are needed for the formation of blood
cells, blood clotting, enzyme activation, energy
metabolism and muscle function.
12
3.Grains are low in minerals, so all
poultry feeds contain
supplemental sources.
a. Calcium, phosphorus and salt are
needed in the greatest amounts.
4.Microminerals like iron, copper,
zinc, manganese and iodine are
supplied through trace mineral
mixes.
13
F. Vitamins
1. There are 13 vitamins required by poultry
that are classified as fat or water soluble.
a. Fat soluble vitamins are A, D, E and K.
b. Water soluble vitamins are thiamin, riboflavin,
nicotinic acid, folic acid, biotin, pantothenic
acid, pyridoxine, Vitamin B12 and choline.
c. All these vitamins are essential for life.
2. The egg typically provides sufficient vitamins
to supply needs of the developing embryo.
a. This is why eggs are a good source of vitamins
for humans.
14
3. Vitamin A is needed for health and
proper functioning of the skin and
lining of the digestive, reproductive
and respiratory tracts.
4. Vitamin D has an important role in
bone formation and the
metabolism of calcium and
phosphorus.
5. Vitamin B metabolizes energy and
other nutrients.
15
Review/Summary
1. What nutrients are required
for proper poultry growth?
2. What is the importance of
the six nutrients in the
poultry diet?
16
16

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Poultry Nutrition: Growth and Maintenance_ Afghanistan

  • 1. Unit C: Poultry Management Lesson 1: Nutrients for Maintenance, Growth and Reproduction 1 1
  • 2. Terms • Carbohydrates • Fats • Minerals • Nutrients • Proteins • Vitamins • Water 2 2
  • 3. I. Nutrients are the chemical substances found in feed materials that can be used, and are necessary, for the maintenance, growth, production, and health of the bird. A. The nutrient needs of poultry are complex and vary by species, breed, age and sex of the bird. 3
  • 4. B. More than 40 specific chemical compounds or elements are nutrients that need to be present in the diet of the bird to support life. 1. These materials are divided into six classifications: water, protein, carbohydrates, fats, vitamins, and minerals. 2. A good diet must include all six of these nutrients in proper amounts. 3. If any are insufficient then growth, reproduction, eggshell quality, egg production, egg size and other factors may be affected. 4
  • 5. II. Each of the nutrients completes a specific task in the body. A. Water is the most important nutrient required by poultry. 1. Water is required for digestion and metabolism in poultry and makes up about 55-75% of the bird’s body and 65% of the egg. 2. Water intake is approximately two times the intake of feed on a weight basis. a. Water softens feed in the crop to prepare it for grinding in the gizzard. 3. Many chemical reactions that take place in the bird’s body require water. a. Blood is about 90% water and helps transport the other nutrients throughout the body as well as carry waste products outside the body. 5
  • 6. 4. Just as in humans, water cools the bird’s body through evaporation. a. Birds do not have sweat glands so a major portion of their evaporative heat loss happens in the air sacs and lungs due to rapid respiration. 5. If medications are to be given to poultry, it is generally through the water. a. Both the compound and water quantities should be carefully and accurately measured before giving them to the birds. b. After medication has been administered, the waterers should be emptied and rinsed. 6
  • 7. B. Proteins 1. Proteins are made of amino acids. a. The number and kind of amino acids will determine the type of protein. 2. The main products of poultry are composed of protein. a. On a dry-weight basis, the body of a mature broiler is more than 65% protein and the contents of an egg are about 50% protein. 7
  • 8. 3. The body of a bird does not need the proteins so much as the amino acids. a. Chicken tissues have the ability to make some of the required amino acids if the other amino acids are in adequate supply. 4. No single feed source can supply all of the amino acids so a mixture must be provided. a. The main sources of proteins for poultry feeds are animal proteins such as fish meal and meat and bone meal; and plant proteins such as soybean meal and corn gluten meal. 8
  • 9. C. Carbohydrates (carbs) 1. Carbs make up the largest portion of a poultry diet. 2. Carbs appear in greatest supply in plants in the form of sugars, starches or cellulose. a. Starch is the form in which most plants store energy and it is the only complex carbohydrate which chickens can readily digest. b. Chickens cannot digest cellulose. 3. Carbs are the major energy source for poultry but only ingredients containing starch, sucrose or simple sugars are efficient energy providers. 4. Corn and wheat are important sources of carbs in poultry diets. 9
  • 10. D.Fats 1. Fats are an important energy source because they contain twice as much energy as any other feed ingredient. 2. Because of this trait, fats play an important role in starting and growing diets. a. Fats make up more than 40% of the dry egg contents and 17% of the dry weight of a market broiler. 10
  • 11. 3.Fats are also important in the diet because they help in the absorption of certain vitamins. 4.Fats also provide essential fatty acids. a. Essential fatty acids aid in membrane integrity, hormone synthesis, fertility, and hatchability. 11
  • 12. E. Minerals 1. Minerals are divided into two classes: macrominerals (those needed in large amounts) and micro- or trace minerals. a. While trace minerals are only needed in small amounts, a deficiency in any of them could result in poor production. 2. Minerals complete many important functions in the poultry body. a. It is most important in the formation of bones. b. Laying hens also require calcium for eggshell formation c. Minerals are needed for the formation of blood cells, blood clotting, enzyme activation, energy metabolism and muscle function. 12
  • 13. 3.Grains are low in minerals, so all poultry feeds contain supplemental sources. a. Calcium, phosphorus and salt are needed in the greatest amounts. 4.Microminerals like iron, copper, zinc, manganese and iodine are supplied through trace mineral mixes. 13
  • 14. F. Vitamins 1. There are 13 vitamins required by poultry that are classified as fat or water soluble. a. Fat soluble vitamins are A, D, E and K. b. Water soluble vitamins are thiamin, riboflavin, nicotinic acid, folic acid, biotin, pantothenic acid, pyridoxine, Vitamin B12 and choline. c. All these vitamins are essential for life. 2. The egg typically provides sufficient vitamins to supply needs of the developing embryo. a. This is why eggs are a good source of vitamins for humans. 14
  • 15. 3. Vitamin A is needed for health and proper functioning of the skin and lining of the digestive, reproductive and respiratory tracts. 4. Vitamin D has an important role in bone formation and the metabolism of calcium and phosphorus. 5. Vitamin B metabolizes energy and other nutrients. 15
  • 16. Review/Summary 1. What nutrients are required for proper poultry growth? 2. What is the importance of the six nutrients in the poultry diet? 16 16