The llama claims the largest population of the domestic South American camelids, most of which are raised in Bolivia. More than 53,000 rural families are dedicated to llama husbandry as part of their livelihood strategy. Contemporary Andean societies deliberately select animals for specific traits and employ substantial livestock management to secure subsistence. This study presents traditional llama husbandry and breeding management activities in the Ayopaya region, Bolivia. Traditional selection traits for male and female llamas are documented and assessed by a ranking and a ratio-scaled evaluation. Husbandry and management parameters are in concordance with other studies conducted in the region, but show a high variation. Average llama herd sizes are rather small (mu = 45.6). In some herds, breeding males are utilized for a long time and mix with other herds, causing concerns about inbreeding. Preferred trait groups for llama males according to farmers' responses were body conformation, fibre, testicle conformation, fleece colour and height at withers. Traditional selection criteria generally relate to the phenotype, but also include the commercially interesting fibre trait. The presented results should be considered in breeding and management programmes for the respective llama population to ensure sustainable use of this genetically and culturally valuable resource.
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http://dx.doi.org/10.1007/s11250-009-9388-6 | DOI Listing |
BMC Vet Res
December 2024
Chemical and Veterinary Investigation Office Westphalia, Arnsberg, Germany.
Background: Paratuberculosis, caused by Mycobacterium avium subspecies paratuberculosis (MAP), is a chronic granulomatous enteritis that affects domestic and wild ruminants and camelids. The disease has rarely been reported in alpacas in Germany. This publication describes epidemiologically independent cases of paratuberculosis in two alpacas in Germany.
View Article and Find Full Text PDFInt J Biol Macromol
November 2024
Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, University of Science and Technology of China, Hefei, Anhui 230001, China; Laboratory of Structural Immunology, Key Laboratory of Immune Response and Immunotherapy, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China; College of Medicine, Lishui University, Lishui, 323000, China; Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei, Anhui, China; Anhui Genebiol Biotech. LTD., Hefei, 230000, China; Biomedical Sciences and Health Laboratory of Anhui Province, University of Science & Technology of China, Hefei 230027, China; Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei 230001, China. Electronic address:
Siglec-9 is a promising immune checkpoint molecule, and therapeutics targeting Siglec-9 have the potential to augment anti-tumor immunity. Here, we generated a bispecific antibody, named as aSE4-1-Fc, by fusing two distinct alpaca derived nanobodies, which can simultaneously target the extracellular Ig variable (V)-set domain and C2-set domains of murine Siglec-9 (also known as Siglec-E) with high affinity. In vivo studies showed that aSE4-1-Fc was better than its component antibodies in inhibiting tumor growth/metastasis, and Siglec-E blockade using aSE4-1-Fc generated protective anti-tumor T cell memory.
View Article and Find Full Text PDFVet Rec
February 2024
Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, UK.
Background: The popularity of alpacas in the UK is increasing, with the British Alpaca Society (BAS) estimating that there are currently 45,000 registered alpacas and a further 15,000 unregistered alpacas. This research set about to investigate what husbandry procedures are currently undertaken on alpacas in the UK.
Methods: An online survey of 47 questions was created using Jisc and was available for 4.
Anim Cogn
September 2023
Animal Husbandry, Behaviour and Welfare Unit, Department of Animal Breeding and Genetics, University of Giessen, Giessen, Germany.
Learning by observing others (i.e. social learning) is an important mechanism to reduce the costs of individual learning.
View Article and Find Full Text PDFTierarztl Prax Ausg G Grosstiere Nutztiere
August 2022
Klinik für Geburtshilfe, Gynäkologie und Andrologie der Groß- und Kleintiere mit Tierärztlicher Ambulanz, Klinikum Veterinärmedizin der Justus-Liebig-Universität Gießen.
Objectives: As part of the "Model- und Demonstrationsvorhaben Tierschutz (MuD-Tierschutz)-project, supported by the Federal Ministry of Food and Agriculture (BMEL), an animal owner survey was conducted to collect data on various aspects of keeping South American camelids (NWC). This publication covers the population structure of NWC in Germany.
Material And Methods: 550 owners participated in the survey, of which 421 (76.
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