Skin follicular structure in Bolivian llamas

T. Lusky; A. Valbonesi; T. Rodriguez; C. Ayala; Luan Weimin; M. Antonini

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Skin follicular structure in Bolivian llamas

In: South American camelids research

Authors:

T. Lusky

T. Lusky
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A. Valbonesi

A. Valbonesi
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T. Rodriguez

T. Rodriguez
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C. Ayala

C. Ayala
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Luan Weimin

Luan Weimin
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M. Antonini

M. Antonini
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Type:: Chapter

Pages:: 207–215

DOI:: https://doi.org/10.3920/978-90-8686-576-5_024

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Thirty llama kids of different sex and type ”Q’aras” (or carguera) and ”T’amphullis”, born between January and April 1998 at the Patacamaya Experimental Station in Bolivia, were chosen for determining the age at which the hair follicles reach the maturity, as well as for comparing the skin follicular structure and activity among these different types of Bolivian llamas. Skin biopsies were taken from the right mid costal region at 2, 4, 6, 8, 10, 12 and 14 months of age in order to monitor four follicular parameters: 1) ratio of secondary to primary follicles (S/P), 2) percentage of active primary follicles (PAP); 3) percentage of active secondary follicles (PAS); 4) the percentage of medullated secondary (PMS) and 5) primary (PMP) fibres. The biopsies were immediately fixed in Bouin solution. Transverse sections of 7 μm were then cut with a rotary microtome and stained by using the Sacpic procedure, modified by Nixon (1993). As a general trend, the PAP parameter reached a maximum value at the 10^th month and a minimum value at the 14^th month, while the PAS parameter reached a maximum value at the 8th month and a minimum value at the 4^th month. The mean value of the S/P parameter in the Q’aras type was found to be 5.35 with a maximum value reached at the 2^nd month, while the minimum value was seen at the 6^th month. In the T’amphullis type the mean value was found to be 5.45 with a maximum value at the 4^th month and a minimum at the 12^th.

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South American camelids research

Volume 1

E-Book ISBN:: 9789086865765

Publisher:: Wageningen Academic

Print Publication Date:: 01 Nov 2006

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Skin follicular structure in Bolivian llamas

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South American camelids research

Volume 1

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