Skin follicular structure in Bolivian llamas

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

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

2 Citations (Scopus)

Abstract

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 10th month and a minimum value at the 14th month, while the PAS parameter reached a maximum value at the 8th month and a minimum value at the 4th 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 2nd month, while the minimum value was seen at the 6th month. In the T'amphullis type the mean value was found to be 5.45 with a maximum value at the 4th month and a minimum at the 12th. © Wageningen Academic Publishers The Netherlands, 2006.
Original languageEnglish
Title of host publicationSouth American Camelids Research: Proceedings of the 4th European Symposium on South American Camelids and DECAMA European Seminar
PublisherWageningen Academic Publishers
DOIs
Publication statusPublished - 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Engineering(all)

Cite this

Lusky, T., Valbonesi, A., Rodriguez, T., Ayala, C., Weimin, L., & Antonini, M. (2006). Skin follicular structure in Bolivian llamas. In South American Camelids Research: Proceedings of the 4th European Symposium on South American Camelids and DECAMA European Seminar Wageningen Academic Publishers. https://doi.org/10.3920/978-90-8686-576-5