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Animal husbandry refers to livestock raising and selective breeding. It is the management and care of animals in which the genetic qualities and behavior of animals are further developed for profit. A large number of farmers depend upon animal husbandry for their livelihood.
THEME SCIENCE IN HUMAN ACTIVITIES AND HUMAN OCCUPATION
TOPIC : KEEPING CATTLE
LESSON6 : IMPORTANCE OF KEEPING CATTLE
Farm animals include;-
Pigs, sheep, goats, cattle, and rabbits.
A drawn structure showing the external features of a cow and a bull.
Cow
Bull
Importance of keeping cattle.
The following are the reasons why people keep cattle;
Learner’s activity.
WEEK : 4
LESSON 1 : TYPES OF CATTLE
A type of cattle is a class of cattle kept for a specific purpose. Specific purpose may be;
Examples of types of cattle
There are basically three types of cattle namely;
Characteristics of dairy cattle.
A drawn illustration showing body shape of dairy cattle.
Examples of dairy cattle include.
Friesian, ayrshire, Guernsey, jersey, Jamaican hope and brown swiss cattle.
Lesson 2 : BEEF AND DUAL PURPOSE CATTLE
Beef cattle are groups of cattle kept for meat (beef) production.
Examples of cattle kept for meat production include;
Characteristics of beef cattle;
An illustration showing the body shape of beef cattle
Dual purpose cattle
Examples include
Note:
Dual Purpose Cattle have characteristics of dairy cattle and beef cattle
Learner’s activity
LESSON 3: BREEDS OF CATTLE
A breed of cattle is a family of cattle having specific characteristics.
Specific characteristics may include;
Breeds of cattle include;
Local breeds or indigenous cattle are breeds of cattle that have lived in East Africa for a long time. They are also called the native breeds kept for both milk and meat production.
Examples include;
Characteristics of local breeds of cattle.
Disadvantages of local breeds of cattle
Exotic breeds of cattle
Characteristics of exotic breeds of cattle.
Note:
Cross breeds are obtained after mating a local breed with an exotic breed.
This is the best way of improving upon the poor local breeds of cattle.
Learner’s activity.
A DOCUMENTARY ABOUT THE TYPES & BREEDS OF CATTLE
LESSON 4 : BREEDING IN CATTLE
Breeding is the act of maintaining or improving the desired characteristics in cattle.
Desired characteristic may include;
Types of breeding
There are basically five types of breeding namely;
Line breeding is the act of mating closely related animals such as cousins.
This type may result into poor production in animals
Inbreeding is the act of mating closely related animals such as a brother and a sister
This method if not properly practiced, it may also produce poor quality animals.
Out breeding is the practice of mating related animals but from different flocks or herds.
This method helps to restore the qualities in cattle that may be disappearing from a flock.
Cross breeding is the practice of mating a local breed with an exotic breed of cattle.
After cross breeding, a cross-breed is obtained or a hybrid.
Cross-breeding helps to improve animals with poor qualities
Upgrading: this is the act of improving upon the qualities of one breed.
This is done by mating breeds of superior qualities several times to obtain good breeds in the herd.
Learner’s activity
LESSON 5 : REPRODUCTION IN CATTLE
The reproductive system of a cow
Functions of different parts
Vulva: receives and guides the penis
Vagina: it’s where semen is deposited
Cervix: closes the lower end of the uterus during pregnancy
Ovary: produces the ova and hormones that help to control the sexual cycle
Ova: are the reproductive cells produced by the ovary
Oviduct/fallopian tube: Is the place where fertilization takes place.
Uterus: it’s where implantation takes place (development of the foetus)
Reproductive system of a bull
Functions of parts
Testes– produce sperms
Sperm ducts – carry sperms
Urethra – passes out urine and sperms
Penis – delivers semen in the vagina of a cow
Learners Activity
LESSON 6: HEAT PERIOD AND INSEMINATION (SERVICES)
Heat Period
This is the time when a cow is in need of a bull for mating.
Mating takes place only when a cow is on heat.
Signs of a cow on heat
Insemination (service)
Insemination or service is the act of depositing sperms into the female reproductive organ of the cow.
For insemination to take place, the cow or a heifer should be on heat i.e. after showing signs
Types of insemination
Natural insemination involves the use of a bull to mount the cow on heat in order to deposit the sperms into the vulva.
Advantages include;
Disadvantages
Artificial insemination
Refers to the act of introducing sperms in the vagina or vulva of a cow by the help of a trained veterinary officer.
Semen used is got from health bulls and with desired characteristics.
Sperms are injected into the vagina using an insemination syringe.
Advantages
Disadvantages;
Learner’s activity
A DOCUMENTARY ABOUT BREEDING IN CATTLE
WEEK : 5
LESSON 1: OTHER PRACTICES CARRIED OUT ON CATTLE FARMS
Castration
Castration is the removal of the essential male sex organs called testes. The main aim of castration is to make the bull unable to fertilize a cow.
Methods of castration
In a closed castration method, an instrument called a burdizzo is used to crush the tubes leading to the scrotum.
We can also use a rubber ring to seal the sperm ducts and thus killing the epididymis
A drawn structure showing a burdizzo
Note:
When the jaws of the burdizzo are closed, the spermatic cord is crushed destroying the spermatic nerves.
Advantages of castration:
Disadvantages of castration
Note:
The use of the ring prevents blood from flowing into the testis that will cause them to shrive and fall off.
In an open castration, the scrotum is cut open using a razorblade or a sharp knife and the testes are removed.
Learner’s activity.
LESSON 2 : DEWORMING AND DEHORNING.
Deworming is the act of giving drugs to animals to kill internal worms.
Deworming is done in two ways:
Importance of deworming
Dehorning: is the removal of horn buds from the calf to prevent growth of horns.
Dehorning should be done when the calf is about 2-3 months.
Methods of dehorning
Advantages of dehorning
Learner’s activity
LESSON 3 : STEAMING UP AND CALVING
Steaming up is the act of feeding in calf-cow on feeds rich in proteins.
In calf-cow is one which has shown up signs of pregnancy such as;
Lactation period is a period when a cow produces milk after giving birth.
Calving is the act of giving birth by a cow
Advantages of steaming up.
An illustration showing developing foetus
Note:
The placenta stores oxygen and digested food before reaching the foetus.
Umbilical cord is a passage of food and oxygen to the foetus
Umbilical cord also transports wastes from the foetus to the placenta.
Amniotic fluid acts as a shock absorber for any external pressure.
Calving
Calving is the act of producing calves by a cow.
Signs of calving in cows
Colostrum
Colostrum is the first milk produced by a cow after calving.
Importance of colostrums
Fertilization
This is the union of a male and female gamete to from a zygote. This takes place in the oviduct or fallopian tube.
Learner’s activity.
LESSON 4 : MILKING IN CATTLE
Milking. Is the method of obtaining milk from the cow’s udder.
Types of milking
Hand milking: is the act of squeezing the teats of a cow using hands.
This method can be used to 1-3 animals.
Machine milking is the act of using a machine to squeeze the teats of cow.
Machine milking is the best for more than five animals.
Note:
A cow can hold up or hide milk if it’s disturbed.
Disadvantages of machine milking
Ways of obtaining clean milk.
Note:
A lactometer is used to detect the presence of water in milk and separates fats from milk.
Structure of a lactometer
A structure showing a strip cup
Learner’s activity
LESSON 5: PRESERVATION OF MILK AND MILK PRODUCTS
Milk products
The following are the products got from well processed milk.
Preservation of milk
This can be done by;
Sterilization involves killing bacteria in milk with maximum boiling followed by covering it on cooling.
Pasteurization involves strong heating and sealing milk before germs enter.
This method was discovered by Louis Pasteur.
Note:
Reasons why farmers should keep milk.
Learner’s activity
LESSON 6 : CATTLE PARASITES
A parasite is an organism that depends on another organism for food and shelter without killing it.
Cattle parasites are divided into two;
External parasites (ecto parasites)
These are parasites that live outside the body of the animal. They suck blood from the animal.
Examples include:
Ticks, lice, mites, tsetse flies, fleas etc.
Ticks suck blood from the animals and spread tick borne diseases such as;
Tsetse flies spread germs that cause Nagana or trypanosomiasis to cattle.
Internal (endo) parasites
These are parasites that live inside the body of the animals and mainly in the intestines.
They suck blood and feed on the digested animal’s food.
They are mainly worms.
Examples include;
Ways of controlling cattle parasites
Learner’s activity
WEEK : 6
LESSON 1 : CATTLE DISEASES
Cattle diseases are classified into three groups according to the causative agents i.e.
Causes of sickness in cattle
Signs of a sick animal include;
Bury deeply dead animals
Burn the dead animals
Vaccinate animals every year
Separate infected animals
Use a strip cup regularly
Treat the animal at the early stage of the disease
Separate infected animals from health ones
Have proper sanitation
Early treatment using antibiotics
Vaccinate after every 6months
Application of a quarantine.
Regular vaccination
Slaughter the infected ones
(brown ear tick)
(brown ear tick)
Treat early cases with tetracycline antibiotics and sulphadilimidine
Dip and spray with the acaricides to kill ticks.
Learner’s activity
LESSON 2 : GRAZING /FEEDING IN CATTLE
Methods of grazing
There are three main methods of grazing cattle namely;
Rotational grazing
This is the type of grazing in which animals graze on one portion of pasture at a time. This can be done using the following systems;
Paddocking
This is when a farmer feeds his animals on a big pasture land divided into paddocks.
Cattle are fed on grass in a paddock and when the grass is no longer enough they are moved to another paddock.
An illustration of paddock grazing
Advantages of paddock grazing
This allows for new grass to grow well in all paddocks.
Disadvantages of Paddocking
Strip grazing
This is where small sections called strips are created using temporary electric wires to restrict movements of animals.
Animals graze in gazetted area.
Advantages
Disadvantages
Tethering
This involves tying the animal on a tree or a peg using a rope to graze in a limited area
This is the most common method used in East Africa .
A structure showing tethering method
Advantages of tethering method.
Disadvantages
Learner’s activity
LESSON 3 : HERDING AND ZERO GRAZING
Herding (free range grazing)
This is a system where animals are left free to graze on different types of pasture as monitored by a herdsman.
This system is mainly practiced by Normadic pastoralists
Advantages
Disadvantages
Zero grazing
This is a system where animals are kept under a special structure and water or feeds are provided.
Small cubicles are made for resting of the animals or feeding.
An illustration of zero grazing
Advantages of zero grazing
Disadvantages of zero-grazing
Learner’s activity
LESSON 4 : HOUSING OF CATTLE AND FENCING
Like any other animals, cattle need good housing. They should be provided with shelter for the following reasons;
Qualities or characteristics of a good house of cattle
The house for cattle is called a byre / kraal.
It has the following characteristics;
Materials used to build cattle houses include
Wood, concrete, metals, bricks, plastics, stones etc
Fencing
A fence is a barrier of life or dead materials divided in areas of land
There are two types of fences namely;
Planted (natural) fences are made by planting certain types of plants along margins of a given piece of land.
Constructed (artificial) fences, are fences were people-made materials are used to create a barrier along a particular piece of land.
The materials used when constructing artificial fences include;
This type of fence is the most popular one.
Importance of fencing
Learner’s activity
LESSON 5: STARTING A LIVESTOCK FARM
Livestock refers to the animals kept on a farm. These may include;
Livestock farming is the rearing of farm animals.
It’s important to people in the following ways;
Requirements for starting a livestock farm.
Land this is a place on which the farm is started. It may be obtained in the following ways;
Capital, this is the money used to buy things needed to start a farm. Some of the things the money may be used for include;
Labour, this includes people who do activities on a farm both skilled and unskilled workers.
Market, in live stock farming, marketing refers to the demand for cattle or their products.
Demand for cattle products means the desire and ability to pay for the products.
Therefore, it’s important to know whether people are ready to buy the products from the farm.
The type of livestock, the farmer needs to identify which animals he or she wishes to keep.
Learner’s activity