Browsing Research Articles (Animal and Wildlife Sciences) by UP Author "Visser, Carina"

Browsing Research Articles (Animal and Wildlife Sciences) by UP Author "Visser, Carina"

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  • Analysis of inbreeding of the South African Dairy Swiss breed 
    De Ponte Bouwer, Paula; Visser, Carina; Mostert, Bernice Euodia (South African Society for Animal Science, 2013-03-09)
    In South Africa, the Dairy Swiss breed, which originated in Switzerland, consists of 27 breeders and 1135 breeding cows. Pedigree information on the breed was analysed to determine its effective population size (Ne) and ...
  • Application of DNA markers in parentage verification of Boran cattle in Kenya 
    Kios, D.K. (David Kiprotich); Van Marle-Koster, Este; Visser, Carina (Springer, 2012-03)
    Boran cattle provide livelihood to thousands of households in the arid and semi arid lands (ASAL) of Kenya. Due to their superior adaptive and productive traits in comparison to other breeds of cattle, they have also ...
  • Assessing single-nucleotide polymorphism selection methods for the development of a low-density panel optimized for imputation in South African Drakensberger beef cattle 
    Lashmar, Simon Frederick; Berry, Donagh P.; Pierneef, Rian Ewald; Muchadeyi, Farai C.; Visser, Carina (Oxford University Press, 2021-07)
    A major obstacle in applying genomic selection (GS) to uniquely adapted local breeds in less-developed countries has been the cost of genotyping at high densities of single-nucleotide polymorphisms (SNP). Cost reduction ...
  • Basiese oorsig van vee-genomika 
    Visser, Carina (Plaas Publishing, 2021-04)
    Stoettelers, produsente en veekundiges word deesdae links en regs met die term ‘genomika’ gekonfronteer. Terme soos dié word egter nie aldag goed verstaan nie en dikwels in die verkeerde konteks gebruik. In hierdie ...
  • Capitalizing on the potential of South African indigenous beef cattle breeds : a review 
    Van Marle-Koster, Este; Visser, Carina; Sealy, Judith; Frantz, Laurent (MDPI, 2021-04-15)
    Cattle populations arrived in Southern Africa almost 2000 years ago, brought by farming communities migrating southwards. For centuries, cattle have been an integral component of livestock production to meet the animal ...
  • Comparative performance of dairy cows in low-input smallholder and high-input production systems in South Africa 
    Abin, Samuel Atanasio Mustafa; Visser, Carina; Banga, C.B. (Springer, 2018-10)
    The aim of this study was to benchmark the performance of dairy cows in the low-input smallholder system against their counterparts in the high-input system, in South Africa. Data comprised of cow performance records from ...
  • Dense sampling of bird diversity increases power of comparative genomics 
    Feng, Shaohong; Stiller, Josefin; Deng, Yuan; Armstrong, Joel; Fang, Qi; Reeve, Andrew Hart; Xie, Duo; Chen, Guangji; Guo, Chunxue; Faircloth, Brant C.; Petersen, Bent; Wang, Zongji; Zhou, Qi; Diekhans, Mark; Chen, Wanjun; Andreu-Sánchez, Sergio; Margaryan, Ashot; Howard, Jason Travis; Parent, Carole; George, Pacheco; Sinding, Mikkel-Holger S.; Puetz, Lara; Cavill, Emily; Ribeiro, Angela M.; Eckhart, Leopold; Fjeldsa, Jon; Hosner, Peter A.; Brumfield, Robb T.; Christidis, Les; Bertelsen, Mads F.; Sicheritz-Ponten, Thomas; Tietze, Dieter Thomas; Robertson, Bruce C.; Song, Gang; Borgia, Gerald; Claramunt, Santiago; Lovette, Irby J.; Cowen, Saul J.; Njoroge, Peter; Dumbacher, John Philip; Ryder, Oliver A.; Fuchs, Jerome; Bunce, Michael; Burt, David W.; Cracraft, Joel; Meng, Guanliang; Hackett, Shannon J.; Ryan, Peter G.; Jonsson, Knud Andreas; Jamieson, Ian G.; Da Fonseca, Rute R.; Braun, Edward L.; Houde, Peter; Mirarab, Siavash; Suh, Alexander; Hansson, Bengt; Ponnikas, Suvi; Sigeman, Hanna; Stervander, Martin; Frandsen, Paul B.; Van der Zwan, Henriette; Van der Sluis, Rencia; Visser, Carina; Balakrishnan, Christopher N.; Clark, Andrew G.; Fitzpatrick, John W.; Bowman, Reed; Chen, Nancy; Cloutier, Alison; Sackton, Timothy B.; Edwards, Scott V.; Foote, Dustin J.; Shakya, Subir B.; Sheldon, Frederick H.; Vignal, Alain; Soares, Andre E.R.; Shapiro, Beth; González-Solis, Jacob; Ferrer-Obiol, Joan; Rozas, Julio; Riutort, Marta; Tigano, Anna; Friesen, Vicki; Dalen, Love; Urrutia, Araxi O.; Szekely, Tamas; Liu, Yang; Campana, Michael G.; Corvelo, Andre; Fleischer, Robert C.; Rutherford, Kim M.; Gemmell, Neil J.; Dussex, Nicolas; Mouritsen, Henrik; Thiele, Nadine; Delmore, Kira; Liedvogel, Miriam; Franke, Andre; Hoeppner, Marc P.; Krone, Oliver; Fudickar, Adam M.; Mila, Borja; Ketterson, Ellen D.; Fidler, Andrew Eric; Friis, Guillermo; Parody-Merino, Angela M.; Battley, Phil F.; Cox, Murray P.; Lima, Nicholas Costa Barroso; Prosdocimi, Francisco; Parchman, Thomas Lee; Schlinger, Barney A.; Loiselle, Bette A.; Blake, John G.; Lim, Haw Chuan; Day, Lainy B.; Fuxjager, Matthew J.; Baldwin, Maude W.; Braun, Michael J.; Wirthlin, Morgan; Dikow, Rebecca B.; Ryder, T. Brandt; Camenisch, Glauco; Keller, Lukas F.; DaCosta, Jeffrey M.; Hauber, Mark E.; Louder, Matthew I.M.; Witt, Christopher C.; McGuire, Jimmy A.; Mudge, Joann; Megna, Libby C.; Carling, Matthew D.; Wang, Biao; Taylor, Scott A.; Del-Rio, Glaucia; Aleixo, Alexandre; Vasconcelos, Ana Tereza Ribeiro; Mello, Claudio V.; Weir, Jason T.; Haussler, David; Li, Qiye; Yang, Huanming; Wang, Jian; Lei, Fumin; Rahbek, Carsten; Gilbert, M. Thomas P.; Graves, Gary R.; Jarvis, Erich D.; Paten, Benedict; Zhang, Guojie (Nature Research, 2020-11-12)
    Whole-genome sequencing projects are increasingly populating the tree of life and characterizing biodiversity1–4. Sparse taxon sampling has previously been proposed to confound phylogenetic inference5, and captures only ...
  • Development of an SNP-based parentage verification panel for lovebirds 
    Van der Zwan, Henriette; Visser, Carina; Schoonen, Maryke; Van der Sluis, Rencia (Wiley, 2019-12)
    Please read abstract in the article.
  • Draft de novo genome sequence of Agapornis roseicollis for application in avian breeding 
    Van der Zwan, Henriette; Van der Westhuizen, Francois; Visser, Carina; Van der Sluis, Rencia (Taylor and Francis, 2018)
    In aviculture, lovebirds are considered one of the most popular birds to keep. This African parakeet is known for its range of plumage colors and ease to tame. Plumage variation is the most important price-determining trait ...
  • The effects of divergent selection for reproduction and sex on quantitative and qualitative slaughter traits in Merinos 
    Cloete, S.W.P.; Naude, C.S.; Cloete, J.J.E.; Scholtz, A.J.; Kruger, A.C.M.; Visser, Carina (Elsevier, 2021-09)
    The impact of selection of sheep for reproduction on meat traits are not evident, while genetic parameters for meat traits is absent for South African pure breeds. Quantitative and qualitative meat traits were therefore ...
  • Environmental factors influencing milk urea nitrogen in South African Holstein cattle 
    Kgole, M.L. (Matlou Lebogang); Visser, Carina; Banga, C.B. (South African Society for Animal Science, 2012)
    By knowing the milk urea nitrogen (MUN) content of dairy cows, the efficiency of dietary nitrogen utilization can be improved. The main objectives of this study were to identify and quantify environmental factors affecting ...
  • Estimation of genetic parameters and comparison of breeding values for body weight with different models in a South African Merino stud 
    Nemutandani, Khetho Ratshilumela; Snyman, Margaretha A.; Olivier, W.J.; Visser, Carina (Elsevier, 2018-12)
    Data collected on body weight from birth to 5 years of age in the Grootfontein Merino stud from 1968 to 2012 were analysed with univariate, multivariate and repeatability animal models. The estimated breeding values (EBVs) ...
  • Evaluation of LiGAPS-Beef to assess extensive pasture-based beef production in three agro-ecological regions in South Africa 
    Magona, Christopher; Hassen, Abubeker; Tesfamariam, Eyob Habte; Visser, Carina; Oosting, Simon; Van der Linden, A. (Elsevier, 2023-05)
    Quantifying the performance of beef cattle in diverse agro-ecological regions with different climatic conditions could be used by stakeholders to develop region-specific resilience strategies and optimize livestock production ...
  • Genetic analysis of pre-weaning survival and inbreeding in the Boxer dog breed of South Africa 
    Mostert, Bernice Euodia; Van Marle-Koster, Este; Visser, Carina; Oosthuizen, Marinda C. (South African Society for Animal Science, 2015-12-01)
    Members of the Federation of Boxer Clubs in Southern Africa (FBCSA) have participated in official recording for many years. The aim of the study was to estimate genetic parameters and trends for pre-weaning survival and ...
  • Genetic characterization of Mozambican Nguni cattle and their relationship with indigenous populations of South Africa 
    King, Felix J.M.; Visser, Carina; Banga, Cuthbert B. (Elsevier, 2022-10)
    Please read abstract in the article.
  • Genetic diversity and population structure in South African, French and Argentinian angora goats from genome-wide SNP data 
    Visser, Carina; Lashmar, Simon Frederick; Van Marle-Koster, Este; Poli, Mario A.; Allain, Daniel (Public Library of Science, 2016-05-12)
    The Angora goat populations in Argentina (AR), France (FR) and South Africa (SA) have been kept geographically and genetically distinct. Due to country-specific selection and breeding strategies, there is a need to ...
  • Genetic diversity and population structure of the endangered Namaqua Afrikaner sheep 
    Qwabe, Sithembile Olga; Van Marle-Koster, Este; Visser, Carina (Springer, 2013-02)
    The Namaqua Afrikaner is an endangered sheep breed indigenous to South Africa, primarily used in smallholder farming systems. Genetic characterization is essential for the breed’s conservation and utilization. In this ...
  • Genetic diversity and population structure of three native cattle populations in Mozambique 
    King, Felix Joao Manuel; Banga, Cuthbert B.; Visser, Carina (Springer, 2021-01)
    In the present work, the population diversity and structure of three populations of native Mozambican cattle were studied, to develop knowledge that is required for sound conservation and genetic improvement programs of ...
  • Genetic diversity in South African Nguni cattle ecotypes based on microsatellite markers 
    Sanarana, Yandisiwe Patience; Visser, Carina; Bosman, Lydia; Nephawe, Khathutshelo; Maiwashe, A.; Van Marle-Koster, Este (Springer, 2016-02)
    The Nguni cattle breed is a landrace breed adapted to different ecological regions of South Africa. A number of ecotypes are recognised based on phenotype within the breed, but it is not known if they are genetically ...
  • Genetic diversity of South African dairy goats for genetic management and improvement 
    Bosman, Lydia; Van Marle-Koster, Este; Visser, Carina (Elsevier, 2015-02)
    The dairy goatindustry is a small, butimportant role player in the South African agricultural sector. The limited number of animals representing the three main breeds (Saanen, British Alpine and Toggenburg) has raised ...