Morphometric Study and Body Weight Prediction Equations in Llamas (Lama glama) Chaku and Q'ara

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Edwin Ormachea V.; Faustino Jahuira H.; Bilo Calsin C.; Uberto Olarte D.; Martha Tapia I.; Luis Olivera M.; Victor Zanabria H. & Buenaventura Ormachea V.


The study used a population of 180 llamas of both sexes (males and females) classified by age (milk teeth; two teeth and four teeth). Body weight data and the following morphometric measurements were recorded: Head: Head length (CL); head width (ACa) and ear length (LO). On the neck: Neck length (LCU); ante- rior neck circumference (PCuA) and posterior neck circumference ( PCuP). On the trunk and limbs: Height at withers (AC); height at rump (AGRU), sternal dorsal diameter (DDE), thoracic perimeter (PT), body length (LOCU), length from withers to rump (LCG), rump length (LGRU), anterior canine perimeter (PCA); posterior canine perimeter (PCP). The data were processed using R statistical software. It was concluded that conformation traits in Ch'aku and Q'ara llamas (Lama glama) are influenced by age, sex and breed. Simple and multiple regression models for body weight prediction were significant.

KEY WORDS: Zoometry; body weight; body volume; prediction equations; productive interrelationship; South American camelids.

How to cite this article

ORMACHEA, V. E.; JAHUIRA, H. F.; CALSIN, C. B.; OLARTE, D. U.; TAPIA, I. M.; OLIVERA, M. L.; ZANABRIA, H. V. & ORMACHEA, V. B. Morphometric study and body weight prediction equations in llamas (Lama glama) Ch'aku and Q'ara. Int. J. Morphol., 40(5):1247-1252, 2022.