Appendix A: Cattle Dentition

Figure I

Permanent Teeth Lingual Aspect
Incisor and Canine Teeth of Ox 5 Years of Age

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Permanent Teeth Lingual Aspect, Incisor and Canine Teeth of Ox 5 Years of Age

Description for Figure I - Permanent Teeth Lingual Aspect, Incisor and Canine Teeth of Ox 5 Years of Age

The figure represents the lingual aspect of the mandible of a bovine of 5 years of age. The first permanent incisors (left and right) are located centrally, the second permanent incisors (left and right), the third permanent incisors (left and right) and the right canine, respectively located laterally, are identified.

Extracted from: Sisson and Grossman's The Anatomy of the Domestic Animals Volume I

Figure II

Illustration of Dentition for Cattle Under Thirty Months (UTM)

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Illustration of Dentition for Cattle Under Thirty Months

Description for Figure II - Illustration of Dentition for Cattle Under Thirty Months

Illustrations are read from right to left. All illustrations show the frontal aspect of a bovine mandible under thirty months.

The first illustration represents a full set of eight temporary teeth on the mandible of a young calf.

The second illustration represents a full set of eight temporary teeth, on the mandible of a bovine of about fifteen months of age.

The third illustration represents the first set of permanent incisors erupting from the mandible of a bovine.

The fourth illustration represents the first set of permanent incisors fully erupted from the mandible of a bovine.

The fifth and final illustration represents the mandible of a bovine. The three right temporary incisors and the last two left temporary incisors are shown. On the left side of the mandible, we also see the erupting third permanent incisor, top of tooth not above gum line, meaning the animal is less than 30 months of age.

Extracted from: FSIS Notice 5-04, January 12, 2004

Figure III

Illustration of Dentition for Cattle Aged 30 Months or Older (OTM)

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Illustration of Dentition for Cattle Aged 30 Months or Older

Description for Figure III - Illustration of Dentition for Cattle Aged 30 Months or Older

Illustrations are read from right to left. All illustrations show the frontal aspect of a bovine mandible aged 30 months or older.

The first illustration represents the first set of permanent incisors. On its left, we observe an erupting third permanent incisor, top of tooth above the gum, meaning the animal is 30 months of age.

The second illustration represents the first set of permanent incisors. On its right, we observe an erupting fourth permanent incisor. On its left, an erupting third permanent incisor with top corners of the tooth above the gum, meaning the animal is 30 months of age or older.

The third illustration represents the first four permanent incisors. The first set is fully erupted and the second set (left and right) have top corners above the gum. The animal is 30 months of age or older.

The fourth illustration represents a full set of permanent incisors. The animal is over 48 months of age.

The fifth illustration represents the medial incisors (first permanent incisors [left and right]) showing wear and levelled tops. The animal is 72 months of age.

The sixth and last illustration represents permanent incisors showing wear and space between the teeth. The animal is 120 months or older.

Extracted from: FSIS Notice 5-04, January 12, 2004

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