Results 131 to 140 of about 1,555 (158)

Reproductive aspects and storage of semen in Camelidae

Animal Reproduction Science, 2000
The characteristics of male and female reproductive tracts and reproductive physiology in camelids are described. An account is given on methods of collection, characteristics and storage of semen, and fertility after artificial insemination (AI) with fresh, liquid-stored and frozen-thawed lamoid and camel semen.
P W, Bravo, J A, Skidmore, X X, Zhao
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Comparative hematology—Studies on camelidae

Comparative Biochemistry and Physiology Part A: Physiology, 1976
Abstract 1. 1. Blood samples from 2 camels, 1 guanaco and 1 llama were studied. All samples clotted; clots retracted and did not lyse. Prothrombin and partial thromboplastin times were faster than human. Plasma “thromboplastin” was effectively generated. Coagulation factor assays fell in the high to high-normal ranges as compared to human. 2.
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Oxygen transport of hemoglobin in high-altitude animals (Camelidae)

Journal of Applied Physiology, 1975
To clarify the mechanisms by which high-altitude Camelidae can adapt to hypoxia, the study of some blood characteristics were carried out in apacas and llamas. The results show that there is a peculiar dissociation curve of hemoglobin in alpacas which permits great affinity of hemoglobin for oxygen at lung level and the release of oxygen at the tissue
C, Reynafarje, J, Faura, D, Villavicencio, A, Curaca, B, Reynafarje, L, Oyola, L, Contreras, E, Vallenas, A, Faura   +8 more
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GENETIC EROSION ON CAMELIDAE

Animal Genetic Resources Information, 1994
RESUMENEl autor describe la situación actual de los camélidos en América del Sur, aportando información sobre la geografia, distribución y número de las tres especies existentes: llama, alpaca y vicuña. Vienen presentados igualmente datos estadísticos importantes sobre las razas y sus sistemas de producción. Algunas indicaciones también sobre la escasa,
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Family Camelidae

1990
Abstract Camels and llamas, which originated in the New World, form part of the artiodactyl suborder Tylopoda The composition of the Tylopoda has been debated (Romer 1966; Webb and Taylor 1980) but the family Camelidae is evidently most closely related to the Oromerycidae (Gentry and Hooker 1988).
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Studies of body temperature patterns in South American Camelidae

Comparative Biochemistry and Physiology Part A: Physiology, 1975
Abstract 1. 1. At sea level the core temperatures of the alpaca ( Lama pacos ) and llama ( Lama glama ), recorded continuously by radiotelemetry, were within the ranges of 37·9–38·3°C and 38·l–38·6°C respectively. These ranges were unaltered after 6 days of water deprivation. 2. 2.
J, Bligh, I, Baumann, J, Sumar, F, Pocco
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Heavy-chain antibodies in Camelidae ; a case of evolutionary innovation

Immunogenetics, 2002
The emergence in Camelidae species of functional antibodies devoid of light chains (referred to as heavy-chain antibodies or HCAbs) is an intriguing evolutionary event. Homodimeric HCAbs have also been documented in spotted ratfish ( Cos5-Abs) and nurse shark (NAR).
Nguyen, Viet Khong, Su, C., Muyldermans, Serge, Van Der Loo, Wessel   +3 more
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Cytogenetic characterization of alpaca (Lama pacos, fam. Camelidae) prometaphase chromosomes.

Cytogenetic and genome research, 2006
The present study provides specific cytogenetic information on prometaphase chromosomes of the alpaca (Lama pacos, fam. Camelidae, 2n = 74) that forms a basis for future work on karyotype standardization and gene mapping of the species, as well as for comparative studies and future genetic improvement programs within the family Camelidae.
Di Berardino D, Nicodemo D, Coppola G, King AW, Ramunno L, Cosenza GF, Iannuzzi L, Di Meo GP, Balmus G, Rubes J   +9 more
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Emergence and evolution of functional heavy-chain antibodies in Camelidae

Developmental & Comparative Immunology, 2003
Antibodies of jawed-vertebrates are composed of paired heavy (H) and light (L) polypeptide chains. Surprisingly, the sera of camelids, nurse shark and wobbegong shark, and possibly ratfish contain antibodies that lack L-chains. In camelids, these Heavy-chain antibodies (HCAbs) are gamma-isotypes, and are functional in antigen binding. In this review we
Conrath, Katja, Wernery, Ulrik, Muyldermans, Serge, Nguyen, Viet Khong   +3 more
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Molecular evolution of the family Camelidae: a mitochondrial DNA study

Proceedings of the Royal Society of London. Series B: Biological Sciences, 1994
We report the first molecular evolutionary analysis of the family Camelidae by analysing the full DNA sequence of the mitochondrial cytochrome b gene. Estimates for the time of divergence of the Old World (Camelini) and New World (Lamini) tribes obtained from sequence data are in agreement with those derived from the fossil record.
H F, Stanley, M, Kadwell, J C, Wheeler
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