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close this bookBetter Farming Series 11- Cattle Breeding (FAO - INADES, 1977, 63 p.)
View the document(introduction...)
View the documentPreface
View the documentCattle breeding means wealth
View the documentA few words to understand the course
close this folderFeeding cattle
View the document(introduction...)
View the documentHow cattle feed
close this folderHow to feed cattle
View the document(introduction...)
View the documentImproving pasture
View the documentStoring grass
View the documentMineral supplements
View the documentDaily requirements of cattle in feed units and protein
View the documentWatering cattle
View the documentHow to feed calves
close this folderLooking after cattle
View the documentAnimals must be watched
View the documentHow to watch over animals
View the documentHousing animals
close this folderThe health of the herd
View the document(introduction...)
View the documentDiseases
View the documentCattle must be vaccinated
View the documentHow to take care of wounds
View the documentWhat to do about parasites
close this folderHow cattle reproduce
View the document(introduction...)
View the documentThe reproductive systems
View the documentPregnancy and birth
View the documentAge of breeding animals
View the documentCastrating bulls
View the documentChoosing breeding animals
View the documentHow to know your herd
close this folderWhat cattle produce
View the documentMeat production
View the documentMilk production
close this folderOrganizing sales
View the document(introduction...)
View the documentFarmers' groups

Age of breeding animals


The ovaries begin to produce ova (see page 42) when a heifer is 9 or 10 months old. From that time, heifers can be fertilized.

But do not have a heifer served by a bull when she is too young. The heifer cannot go on growing herself and feed the calf she is carrying. In fact you may have accidents when the calf is born, at calving.

So wait until the heifer is big and strong enough, until she is about 2 years (24 months) old, before having her served.

The bull

The testicles of young bulls begin to produce semen when the bulls are about 8 months old.

But do not have cows served by too young a bull. The bull will get tired, will not grow well, will not eat well and will become a poor breeding animal. Do not have the bull serve cows before it is 18 months old.

To make sure that heifers are not fertilized too young, and that bulls do not serve cows before the age of 18 months, do not put heifers that are too young together with bulls, or bulls that are too young with cows.