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1. Genetic diversity and validation of a microsatellite panel for parentage testing for alpacas (Vicugna pacos) on three Peruvian farms

Author:
Morón, J.A.; Veli, E.A.; Membrillo, A.; Paredes, M.M.; Gutiérrez, G.A
Source:
Small ruminant research 2020 v.193 pp. 106246
ISSN:
0921-4488
Subject:
alpacas,   etc   ; DNA; Vicugna pacos; alleles; data collection; electrophoresis; farms; genetic markers; genetic variation; genotype; genotyping; hair follicles; inbreeding coefficient; loci; microsatellite repeats; parents; paternity; probability; Andes region; Peru;     Show all 20 Subjects
Abstract:
... The alpaca is of greatest economic importance in the Peruvian High Andes. This study aimed to determine the genetic diversity of three Peruvian alpaca farms, as well as, to validate a microsatellite markers panel for paternity testing. In this study, 247 samples of Huacaya alpacas were taken from three different localities (Sanjo, San Pedro de Raco and Cachipampa) from Pasco Region in Peru. DNA wa ...
DOI:
10.1016/j.smallrumres.2020.106246

2. Heritability of individual fiber medullation in Peruvian alpacas

Author:
Pinares, Rubén; Gutiérrez, Gustavo Augusto; Cruz, Alan; Morante, Renzo; Cervantes, Isabel; Burgos, Alonso; Gutiérrez, Juan Pablo
Source:
Small ruminant research 2018 v.165 pp. 93-100
ISSN:
0921-4488
Subject:
alpacas,   etc   ; demonstration farms; genetic correlation; heritability; males; pedigree; statistical models; Peru;     Show all 8 Subjects
Abstract:
... The aim of this research was to estimate for the first time the heritability and genetic relationship between medullation and fiber diameter in each fiber by itself. A total of 21,600 fibers from 36 samples from white fleeces, 600 fibers each sample, from males between 0.4 and 10.4 years old from Pacomarca experimental farm (Inca Group, Puno, Peru) were tested using projection microscope (PM). The ...
DOI:
10.1016/j.smallrumres.2018.04.007

3. Cytokines expression in alpacas and llamas exposed to cold stress

Author:
Arias, Nino; Velapatiño, Billie; Hung, Armando; Cok, Jaime
Source:
Small ruminant research 2016 v.141 pp. 135-140
ISSN:
0921-4488
Subject:
alpacas,   etc   ; Camelidae; Pasteurella multocida; altitude; cold; cold season; cold stress; defense mechanisms; gene expression; histopathology; inflammation; innate immunity; interleukin-1alpha; interleukin-1beta; interleukin-6; llamas; lungs; messenger RNA; monocytes; pathogens; pneumonia; quantitative polymerase chain reaction; sea level; temperature; tumor necrosis factor-alpha; weather; Peru;     Show all 27 Subjects
Abstract:
... Cytokine expression could play an important role in camelids exposed to cold stress and subsequent pneumonia associated infections, therefore inducing a broad array of inflammatory mediators. To understand the host innate immune response in camelids exposed to cold weather, IL-1α, IL-1β, IL-6 and TNFα mRNA expression were examined using quantitative real-time polymerase chain reaction method using ...
DOI:
10.1016/j.smallrumres.2016.07.016

4. Betacoronavirus 1 in alpacas (Vicugna pacos) in the High Peruvian Andes

Author:
Luna, L.; Brandão, P.E.; Maturrano, L.; Rosadio, R.; Silva, F.D.F.; Soares, R.M.; Gregori, F.
Source:
Small ruminant research 2015 v.133 pp. 7-9
ISSN:
0921-4488
Subject:
alpacas,   etc   ; Bovine coronavirus; RNA-directed RNA polymerase; Vicugna pacos; cattle; etiology; farms; feces; genes; pastures; polymerase chain reaction; viruses; Andes region; Peru; Quebec; United States;     Show all 16 Subjects
Abstract:
... Genetic sequences highly related to Bovine coronavirus (BCoV) were detected in fecal samples from Peruvian 1–3 week old alpaca crias located on six farms in Puno department, some of which shared pastures with cattle. A total of 60 samples were screened for coronavirus using a nested PCR amplification of a fragment of the RNA-dependent RNA polymerase (RdRp) gene. Sequences from 11 positive samples ...
DOI:
10.1016/j.smallrumres.2015.10.019
PubMed:
32288207
PubMed Central:
PMC7127686

5. Seroprevalence to pathogenic leptospira in Peruvian alpacas and vicuñas

Author:
Rosadio, A. Raúl; Veliz, A. Álvaro; Castillo, D. Hugo; Yaya, L. Katherine; Rodríguez, H. Antony; Rivera, G. Hermelinda; Wheeler, Jane C.
Source:
Small ruminant research 2015 v.130 pp. 256-259
ISSN:
0921-4488
Subject:
alpacas,   etc   ; Leptospira; agglutination; antibodies; blood serum; seroprevalence; serotypes; Peru;     Show all 8 Subjects
Abstract:
... Micro agglutination testing was used to detect specific antibodies against five pathogenic Leptospiraserovars (icterohaemorrhagiae, pomona, canicola, wolfii and ballum) in 793 alpaca and 195 vicuña serum samples collected in the Huancavelica and Ayacucho Departments of Peru. The study revealed that 89.6% of the alpacas and 77.4% of the vicuñas were positive to one or more serovars. In alpacas, the ...
DOI:
10.1016/j.smallrumres.2015.08.001

6. Genetic and phenotypic variation in five populations of Huacaya Alpacas (Vicugna pacos) from Peru

Author:
Paredes, M.M.; Membrillo, A.; Azor, P.J.; Machaca, J.E.; Torres, D.; Serrano, A. Muñoz
Source:
Small ruminant research 2013 v.111 no.1-3 pp. 31-40
ISSN:
0921-4488
Subject:
alpacas,   etc   ; DNA; Vicugna; alleles; analysis of variance; gene flow; genetic variation; heterozygosity; loci; microsatellite repeats; phenotypic variation; phylogeny; Peru;     Show all 13 Subjects
Abstract:
... Five Peruvian alpaca populations from South Peru (San Juan de Tarucani, Estación Pillones and Chalhuanca from Arequipa Region and Palca and Lampa from Puno Region) were analysed at 20 microsatellite markers in order to estimate the genetic diversity. The association between the microsatellite genotypes and the fiber diameter traits was also examined in the alpacas of first shearing. A total of 230 ...
DOI:
10.1016/j.smallrumres.2012.09.017

7. Variation of fibre characteristics among sampling sites for Huacaya alpaca fleeces from the High Andes

Author:
McGregor, B.A.; Ramos, H.E.; Quispe Peña, E.C.
Source:
Small ruminant research 2012 v.102 no.2-3 pp. 191-196
ISSN:
0921-4488
Subject:
alpacas,   etc   ; fleece; income; eyes; body weight; farmers; staple (fibers); variance; withers; regression analysis; neck; Andes region; Peru;     Show all 13 Subjects
Abstract:
... In the Huancavelica region of Peru alpacas form the main and often only means of deriving an income for 3300 poor families in 60 communities. Ninety percent of alpacas in the region are Huacaya which are grazed at altitudes 4000–4800m. Little attention has been paid to alpacas grazed in the High Andes. We aimed to: (i) quantify the variation in alpaca mean fibre diameter (MFD), fibre diameter coef ...
DOI:
10.1016/j.smallrumres.2011.07.016

8. Respiratory syncytial and parainfluenza type 3 viruses coexisting with Pasteurella multocida and Mannheimia hemolytica in acute pneumonias of neonatal alpacas

Author:
Rosadio, R.; Cirilo, E.; Manchego, A.; Rivera, H.
Source:
Small ruminant research 2011 v.97 no.1-3 pp. 110-116
ISSN:
0921-4488
Subject:
alpacas,   etc   ; acute course; Respirovirus; Bovine orthopneumovirus; cattle; animal pathogenic bacteria; pneumonic pasteurellosis; Mannheimia haemolytica; necropsy; edema; lungs; neonates; mixed infection; histopathology; Pasteurella multocida; Peru;     Show all 16 Subjects
Abstract:
... The etiopathogenesis of acute pneumonia, the second most important cause of mortality among neonatal alpacas in Peru, is still poorly understood. The objective of this study was to characterize gross and histopathology lesions, as well as to identify viruses [parainfluenza type 3 (PI-3) and/or bovine respiratory syncytial (BRS)] by direct inmunofluorescence test, and isolate bacteria [Pasteurella ...
DOI:
10.1016/j.smallrumres.2011.02.001

9. Genetic parameters and relationships between fibre and type traits in two breeds of Peruvian alpacas

Author:
Cervantes, I.; Pérez-Cabal, M.A.; Morante, R.; Burgos, A.; Salgado, C.; Nieto, B.; Goyache, F.; Gutiérrez, J.P.
Source:
Small ruminant research 2010 v.88 no.1 pp. 6-11
ISSN:
0921-4488
Subject:
alpacas,   etc   ; animal breeding; heritability; sustainable agriculture; fleece; wool production; livestock production; traditional farming; genotype; diameter; body regions; wool; quantitative traits; breed differences; volume; genetic correlation; indigenous species; selection criteria; Andes region; Peru;     Show all 20 Subjects
Abstract:
... Four fibre traits (fibre diameter, FD; coefficient of variation of FD, comfort factor; and standard deviation of FD) were jointly analysed with six subjectively scored type traits (fleece density, crimp, lock structure, head, coverage, and balance) in two breeds of Peruvian Altiplano alpaca (Suri, SU; and Huacayo, HU) to ascertain their genetic relationship. A total of 2405 fibre records and 2194 ...
DOI:
10.1016/j.smallrumres.2009.10.016

10. The effect of altitude on alpaca (Lama pacos) fiber production

Author:
Braga, W.; Leyva, V.; Cochran, R.
Source:
Small ruminant research 2007 v.68 no.3 pp. 323-328
ISSN:
0921-4488
Subject:
alpacas,   etc   ; animal growth; wool production; fleece; ruminant nutrition; rearing; body weight; males; highlands; wet season; dimensions; seasonal variation; statistical analysis; altitude; fiber quality; wool; hairs; Peru;     Show all 18 Subjects
Abstract:
... In the Peruvian highlands, alpaca rearing areas are located between 4100 and 4700 m above sea level, with the finest fiber production believed to be associated with higher altitudes. The purpose of this experiment was to study the effect of differences in altitude on alpaca production, body weight (BW), clean fiber weight (FW) and fiber diameter (FD). Two areas with similar carrying capacities wer ...
DOI:
10.1016/j.smallrumres.2005.11.008