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    Browsing Research Articles (Animal Sciences) by Title

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    Now showing items 1-20 of 145

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        Across flock genetic parameter estimation for yearling body weight and fleece traits in the South African Dohne Merino population 

        Van Wyk, J. B.; Swanepoel, J. W.; Cloete, S. W. P. (Schalk Willem Petrus van der Merwe); Olivier, J. J.; Delport, G. J. (South African Society for Animal Science, 2008)
        Accurate genetic parameter estimates are needed upon which to perform multiple-trait across flock breed analyses. Genetic parameters for yearling body weight (BW), clean fleece weight (CFW) and mean fibre diameter (MFD) ...
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        The adaption of the South Africa sheep industry to new trends in animal breeding and genetics : a review 

        Cloete, S. W. P. (Schalk Willem Petrus van der Merwe); Olivier, J. J.; Sandenbergh, L.; Snyman, M. A. (South African Society for Animal Science, 2014-10-11)
        The history of sheep breeding research in South Africa can be divided roughly into four eras, namely the research and development phase, the commencement of recording and evaluation, the expansion of recording schemes, ...
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        Amino acid requirements of South African Mutton Merino lambs 3. Duodenal and whole empty body essential amino acid profile 

        Ferreira, A. V.; Van der Merwe, H. J.; Loest, C. A. (South African Society for Animal Science, 1999)
        The duodenal and whole empty body essential amino acid (EAA) profile of South African Mutton Merino lambs fed a standard growth diet was investigated. The data of 20 lambs were used. With the exception of phenylalanine, ...
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        Analysis of carcass characteristics and fat deposition of Merino, South African Mutton Merino and Dorper lambs housed in a feedlot 

        Brand, T. S.; Van der Westhuizen, E. J.; Van der Merwe, D. A.; Hoffman, L. C. (South African Society for Animal Science, 2018-02-15)
        The objective of this study was to determine the effect of time spent in a feedlot on the size of the various fat depots and the distribution of the main tissues (muscle, bone, and fat) of three common South African sheep ...
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        Anti-nutritional factors in canola produced in the Western and Southern Cape areas of South Africa 

        Brand, T. S.; Smith, N.; Hoffman, L. C. (South African Society for Animal Science, 2007)
        ABSTRACT: The development of low erucic acid, low glucosinolate cultivars of canola seed has led to the availability of a feed ingredient with considerable potential to replace soyabean meal in diets for all classes of ...
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        Application of immunocastration in a commercial Dohne Merino ram flock before weaning 

        Needham, T.; Lambrechts, H.; Hoffman, L. C. (South African Society for Animal Science, 2019-01-03)
        The influence of pre-weaning immunocastration on the growth, incidences of reaction to vaccination, serum testosterone concentration and slaughter performance of ram lambs was determined and compared to that of physically ...
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        Bioavailability and bioefficacy of hemp by-products in ruminant meat production and preservation: a review. 

        Semwogerere, Farouk; Katiyatiya, Chenaimoyo L. F.; Chikwanha, Obert C.; Mapiye, Cletos (2020)
        Plant by-products obtained from agro-industrial processes require valorisation to demonstrate their potential for enhancing animal health, meat production, and shelf life extension. One example is the fast-growing hemp ...
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        Carcass and muscle yields of ostriches as influenced by genotype 

        Hoffman, L. C.; Brand, M. M.; Muller, M.; Cloete, S. W. P. (Schalk Willem Petrus van der Merwe) (South African Society for Animal Science, 2007)
        ABSTRACT: Live, carcass, leg and muscle weight (kg) as well as dressing percentage were compared between South African Black (Struthio camelus var. domesticus) ostriches, purebred Zimbabwean Blue Neck (Struthio camelus ...
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        Carcass traits and cutting yields of entire and immunocastrated pigs fed increasing protein levels with and without ractopamine hydrochloride supplementation 

        Needham, T.; Hoffman, L. C. (American Society of Animal Science, 2015)
        The objective of this study was to determine the effects of increasing balanced protein, with and without ractopamine hydrochloride (RAC), in the finisher diets of immunocastrates on their carcass cutting yields and ...
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        Castration of male livestock and the potential of immunocastration to improve animal welfare and production traits : invited review 

        Needham, T.; Lambrechts, H.; Hoffman, L. C. (South African Society for Animal Science, 2017-09-15)
        Growing consumer awareness about animal welfare has led to the assessment of the impact of common farming practices, such as physical castration, on animal well-being under production conditions. Physical castration is ...
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        Characterization of pigeon paramyxoviruses (Newcastle disease virus) isolated in South Africa from 2001 to 2006 

        Abolnik, C.; Gerdes, G. H.; Kitching, J.; Swanepoel, S.; Romito, M.; Bisshchop, S. P. R (AOSIS OpenJournals, 2008)
        Pigeon paramyxovirus type 1 (PPMV-1), a variant of Newcastle disease virus that primarily affects doves and pigeons has been isolated in South Africa since the mid-1980s. Phylogenetic evidence indicates that pigeon ...
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        Chemical characteristics of red hartebeest (Alcelaphus buselaphus caama) meat 

        Hoffman, L. C.; Smit, K.; Muller, N. (South African Society for Animal Science, 2010)
        The aim of this study was to determine the effect of region (Qua-Qua, Maria Moroka, Sandveld and Tussen die Riviere) and gender on carcass characteristics and chemical composition of meat from the red hartebeest. The ...
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        Chemical composition, true metabolisable energy content and amino acid availability of grain legumes for poultry 

        Brand, T. S.; Brandt, D. A.; Cruywagen, C. W. (South African Society for Animal Science, 2004)
        Samples of sweet yellow lupins (Lupinus luteus; n = 4), broad leaf lupins (Lupinus albus; n = 12), narrow leaf lupins (Lupinus angustifolius; n = 8), faba beans (Vicia faba; n = 2), field peas (Pisum sativum; n = 4) and ...
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        Citrus and winery wastes : promising dietary supplements for sustainable ruminant animal nutrition, health, production, and meat quality 

        Tayengwa, Tawanda; Mapiye, Cletos (MDPI, 2018-10-16)
        Citrus and grapes are the most widely grown fruits globally, with one-third of total production used for juice and wine making. The juice and winemaking processes generate large quantities of solid organic wastes including ...
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        A comparison between the body composition, carcass characteristics and retail cuts of South African mutton Merino and Dormer sheep 

        Cloete, J. J .E.; Hoffman, L. C.; Cloete, S. W. P. (Schalk Willem Petrus van der Merwe); Fourie, J. E. (South African Society for Animal Science, 2004)
        The body composition, carcass characteristics and retail cuts of 61 Dormers (21 rams and 40 ewes) and 35 South African Mutton Merinos (SAMM) (17 rams and 18 ewes) were determined. A range of carcass measurements was recorded. ...
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        A comparison between the effects of two cropping methods on the meat quality of impala (Aepyceros melampus) 

        Kritzinger, B.; Hoffman, L. C.; Ferreira, A. V. (South African Society for Animal Science, 2003)
        Impala (Aepyceros melampus) constitute one of the most commercially important species in game farming in South Africa. The purpose of this study was to compare the effects of day and night cropping on the meat quality ...
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        Comparison of shear force tenderness, drip and cooking loss, and ultimate muscle pH of the loin muscle among grass-fed steers of four major beef crosses slaughtered in Namibia 

        Strydom, P.; Luhl, J.; Kahl, C.; Hoffman, L. C. (South African Society for Animal Science, 2016)
        The authors investigated the effects of breed (Brahman, Bonsmara, Simbrah and Simmental crosses) and post-mortem ageing on meat tenderness, purge, cooking loss and ultimate pH of the longissimus muscle under commercial ...
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        Composition of rabbit caecal microbiota and the effects of dietary quercetin supplementation and sex thereupon 

        North, M. K.; Zotte, A. Dalle; Hoffman, L. C. (Universidad Politécnica de Valencia, 2019)
        The purpose of this study was to add to the current understanding of rabbit caecal microbiota. This involved describing its microbial composition and linking this to live performance parameters, as well as determining the ...
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        Conception rate and fecundity of Dohne Merino ewes in a continuous mating system 

        Brand, T. S.; Terblanche, S.; Jordaan, J. W. (South African Society for Animal Science, 2014-08-24)
        A study was conducted to evaluate the conception rate and fecundity of Dohne Merino ewes in an intensive sheep production system, where continuous mating was applied. The study was conducted at the Kromme Rhee research ...
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        Conservation of indigenous cattle genetic resources in Southern Africa’s smallholder areas : turning threats into opportunities - A review 

        Nyamushamba, G. B.; Mapiye, C.; Tada, O.; Halimani, T. E.; Muchenje, V. (Asian-Australasian Association of Animal Production Societies, 2017)
        The current review focuses on characterization and conservation efforts vital for the development of breeding programmes for indigenous beef cattle genetic resources in Southern Africa. Indigenous African cattle breeds ...

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