Results 41 to 50 of about 4,968 (166)

Energy balance of pregnant vicuñas (Vicugna vicugna) in the Chilean High Andes [PDF]

Austral journal of veterinary sciences, 2019
Energy unbalance may be the cause of low fertility rates found in vicuñas. The objective of this study was to estimate the temporal variation of the nutritional status in pregnant vicuñas from a herd kept under captivity in the Chilean High Andes. The hypothesis under study is that animals are able to maintain the energy balance during the dry season ...
Norambuena, Cecilia, Mussa, Karen, Hernández, Francisca, Alfaro, Jorge, Velasco, Miriam   +4 more
openaire   +3 more sources

Modeling the impacts of grazing management on livestock behavior and performance: A case study in the Peruvian Andes

Grassland Research, Volume 5, Issue 3, Page 270-283, September 2026.
Our modeling study shows that livestock management strongly influences grazing behavior and animal performance in the Peruvian Andes. Furthermore, adjusting stocking rates and improving animal distribution can enhance forage intake and body condition while increasing forage biomass.
Melody R. Zarria Samanamud, Randall B. Boone   +1 more
wiley   +1 more source

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

Grassland Science, Volume 72, Issue 3, Page 163-174, July 2026.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo, Wendy E. Pérez, Sphyros Lastra, Juancarlos Cruz, Richard Solórzano‐Acosta, Cecilia Turín   +5 more
wiley   +1 more source

ASIP Variants in Livestock: It's Not Black and White

Animal Genetics, Volume 57, Issue 3, June 2026.
ABSTRACT Fur and feather pigmentation play an important role in the survival and reproduction of many species, as well as in selective breeding and agriculture. The synthesis of pigment molecules, eumelanin and pheomelanin, is partially regulated by the agouti signalling protein (ASIP) encoded by the ASIP gene.
Isabella M. Brown, Kylie A. Munyard
wiley   +1 more source

Genetic diversity and conservation status of managed vicuña (Vicugna vicugna) populations in Argentina

Genetica, 2016
The vicuña (Vicugna vicugna) was indiscriminately hunted for more than 400 years and, by the end of 1960s, it was seriously endangered. At that time, a captive breeding program was initiated in Argentina by the National Institute of Agricultural Technology (INTA) with the aim of preserving the species.
Anello, Melina, Daverio, Maria Silvana, Romero, Sandra Raquel, Rigalt, Francisco, Silbestro, Miriam Beatriz, Arbeletche, Lidia Beatriz, Di Rocco, Florencia   +6 more
openaire   +4 more sources

Nanobodies: A Promising Toolkit for Diagnostic Applications

SmartMat, Volume 7, Issue 3, June 2026.
This review focuses on camelid‐derived nanobodies (VHHs) and explains how their small size and high stability support robust diagnostic design. Applications across ELISA, lateral flow assays, and PET/SPECT imaging are summarized, along with clinical progress such as caplacizumab.
Wei Wu, Abid Ali, Li Sun, Jiahao Hu, Lina Hameed, Saba Shafi, Ali Raza, Khuzin Dinislam, Wenjing Xing, Long Rong, Jie Lin, Jian Ma   +11 more
wiley   +1 more source

The Late Pleistocene distribution of vicuñas (Vicugna vicugna) and the "extinction" of the gracile llama ("Lama gracilis"): New molecular data

, 2009
We present the results of a palaeogenetic analysis of two Late Pleistocene camelids originating in southern Chile. Our analysis of two mitochondrial DNA fragments (control region and cytochrome b gene) reveals that these specimens do not belong to an ...
Prieto, Alfredo, Marin, Juan Carlos, Gilbert, M. Thomas P., Weinstock, Jaco, Gonzalez, Benito A., Willerslev, Eske, Shapiro, Beth, Juan Carlos Marín, Willersleva, Eske, M. Thomas P. Gilbert, Carlos Marin, Juan, Beth Shapiro, Alfredo Prieto, Eske Willerslev, Jaco Weinstock, Benito A. González   +15 more
core   +1 more source

Vicugna pacos

, 2011
4. Alpaca Vicugna pacos French: Alpaca / German: Alpaka / Spanish: Alpaca Taxonomy. Camelus pacos Linnaeus, 1758, Peru. The Alpaca is a domesticated camelid indigenous and endemic to South America, well known for the characteristics of its fine-diameter wool: soft, silky, high luster, lightweight, and warm.
Don E. Wilson, Russell A. Mittermeier
openaire   +2 more sources

VASCULARIZACION DEL PARENQUIMA TESTICULAR DE LA VICUÑA vicugna vicugna

Revista Investigaciones Altoandinas - Journal of High Andean Investigation, 2013
<p>Investigaciones sobre la vascularización del testículo de vicuñas aún no fueron estudiadas con técnicas de corrosión y formación de moldes vasculares para la comprensión de la fisiología reproductiva de esta especie. El objetivo del estudio detalló la organización vascular del parénquima testicular de la vicuña tanto arterial y venosa.
LUIS OLIVERA MAROCHO, CIRIACO ZUÑIGA ZUÑIGA, WASHINGTON CASTRO   +2 more
openaire   +1 more source

Study of testicular echogenic texture in alpacas (Vicugna pacos): effect of cystic degeneration and environmental temperature [PDF]

, 2022
openStudio della tessitura ecogenica testicolare in alpaca (vicugna pacos) mediante l’utilizzo del programma ImageJ.
BETTELLA, SARA
core