Cattle age determination

Cattle age determination

are erupted in thirty days; the teeth have grown large enough to touch each other by the sixth month. Temporary incisors or "milk" teeth are smaller than the permanent incisors.

Cattle have 32 teeth, including 6 incisors or biting teeth and 2 canines in the front on the bottom jaw. The canine teeth are not pointed but look like incisors. The incisor teeth meet with the thick hard dental pad of the upper jaw. Cattle have 6 premolars and 6 molars on both top and bottom jaws for a total of 24 molars. The teeth of cattle are designed primarily for grinding, and they use their rough tongues to grasp grass and then nip it off between their incisors and the dental pad. []

There is controversy over telling the age of cattle by their teeth and this can be caused by the country that is grazed. For instance drought or sandy grazing will increase the wear on teeth.

The following is a guide:
* 12 months - All the calf teeth are in place.
* 15 months - Centre permanent incisors appear.
* 18 months - Centre permanent incisors showing some wear.
* 24 months - First intermediates up.
* 30 months – Six broad incisors up.
* 36 months – Six broad incisors showing wear.
* 39 months – Corner teeth up
* 42 months – Eight broad incisors showing wear.cite book |last= Cole B.V.Sc. |first= V.G. |coauthors= |title= Beef Production Guide |publisher= Macarthur Press, Parramatta |year= 1978 |month= |isbn= 0-959-9973-8]

The development is quite complete at from five to six years. At that time the border of the incisors has been worn away a little below the level of the grinders. At six years, the first grinders are beginning to wear, and are on a level with the incisors. At eight years, the wear of the first grinders is very apparent. At ten or eleven years, used surfaces of the teeth begin to bear a square mark surrounded by a white line, and this is pronounced on all the teeth by the twelfth year; between the twelfth and the fourteenth year this mark takes a round form. [The Household Cyclopedia of General Information, 1881]

The rings on the horns are less useful as guides. At ten or twelve months the first ring appears; at twenty months to two years the second; at thirty to thirty-two months the third ring, at forty to forty-six months the fourth ring, at fifty four to sixty months the fifth ring, and so on. But, at the fifth year, the three first rings are indistinguishable, and at the eighth year all the rings.

The brush of the tail is only useful as a guide when assessing small, stunted or young cattle. A brush that is about fetlock length or longer is an indication that the beast is 12 months old or older.

Cattle age in a carcase is determined checking the physiological skeletal maturity (ossification) (red) of the tips or “buttons” of the thoracic vertebrae. The size and shape of the rib bones are important considerations as well as the colour and texture of the flesh. [ [ Live beef cattle assessment] Retrieved 27 September 2008]

The use of number (year) branding, tattoos or ear tags with numbers or different colours are good methods of identifying the age of cattle, if they are used according the usual standards.


External links

* [ Age Determination in Beef Cattle]
* [ Determining the Age of Cattle by Their Teeth]
* [ Using Dentition to Age Cattle]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Cattle — Cow redirects here. For other uses, see Cow (disambiguation). For other uses, see Cattle (disambiguation). Cattle …   Wikipedia

  • Stone Age — the period in the history of humankind, preceding the Bronze Age and the Iron Age, and marked by the use of stone implements and weapons: subdivided into the Paleolithic, Mesolithic, and Neolithic periods. [1860 65] * * * First known period of… …   Universalium

  • Bronze Age — For other uses, see Bronze Age (disambiguation). Diffusion of metallurgy in western Europe. The darkest areas are the oldest. Bronze Age …   Wikipedia

  • Mesopotamia, history of — ▪ historical region, Asia Introduction  history of the region in southwestern Asia where the world s earliest civilization developed. The name comes from a Greek word meaning “between rivers,” referring to the land between the Tigris and… …   Universalium

  • Altern — Die Zeit befiehlt dem Alter, die Schönheit zu zerstören, Ölgemälde von Pompeo Batoni aus dem Jahr 1746 …   Deutsch Wikipedia

  • Vermischung der Dingos mit anderen Haushunden — „Dingo“ mit ungewöhnlicher Schnauzenmusterung Die Vermischung von Dingos mit anderen Haushunden ist ein laufender Prozess, der die Populationen wild lebender Haushunde in Australien betrifft. Der Bestand an wild lebenden Haushunden in Australien… …   Deutsch Wikipedia

  • Kouroukan Fouga — The Kouroukan Fouga or Kurukan Fuga is purported to be the constitution of the Mali Empire (mid thirteenth century to c. 1645), created after the Battle of Krina by an assembly of notables to create a government for the newly established empire.… …   Wikipedia

  • India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

  • United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

  • Southern Africa — Introduction       southernmost region of the African continent, comprising the countries of Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, and Zimbabwe. The island nation of Madagascar is excluded… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”