Browsing Research Articles (Animal Sciences) by Title
Now showing items 1-20 of 60
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The adaption of the South Africa sheep industry to new trends in animal breeding and genetics : a review
(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, ... -
Anti-nutritional factors in canola produced in the Western and Southern Cape areas of South Africa
(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 ... -
Carcass and muscle yields of ostriches as influenced by genotype
(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 ... -
Carcass traits and cutting yields of entire and immunocastrated pigs fed increasing protein levels with and without ractopamine hydrochloride supplementation
(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 ... -
Characterization of pigeon paramyxoviruses (Newcastle disease virus) isolated in South Africa from 2001 to 2006
(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 ... -
A comparison between the body composition, carcass characteristics and retail cuts of South African mutton Merino and Dormer sheep.
(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. ... -
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
(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 ... -
Conception rate and fecundity of Dohne Merino ewes in a continuous mating system
(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 ... -
Conservation of indigenous cattle genetic resources in Southern Africa’s smallholder areas : turning threats into opportunities - A review
(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 ... -
Direct PCR offers a fast and reliable alternative to conventional DNA isolation methods for gut microbiomes
(American Society for Microbiology, 2017)The gut microbiome of animals is emerging as an important factor influencing ecological and evolutionary processes. A major bottleneck in obtaining microbiome data from large numbers of samples is the time-consuming ... -
Effect of dietary vitamin E on the performance of broilers and quality of broiler meat during refrigerated and frozen storage
(South African Society for Animal Science, 2001)Experiment 1 was carried out with 220 one-day-old broiler chicks to evaluate the effect of 11 different levels of vitamin E supplementation (viz. 0 to 200 mg a-tocopheryl acetate/kg diet) on the production performance ... -
The effect of different dietary vitamin and mineral levels on certain production parameters, including egg shell characteristics of breeding ostriches
(South African Society for Animal Science, 2014-08-24)Earlier studies on breeding birds indicated no effect of dietary energy-content on feed intake. This observation is contradictory to results for other animals and/or poultry where feed intake decreases with an increase in ... -
The effect of extensive human presence at an early age on stress responses and reactivity of juvenile ostriches towards humans
(MDPI, 2018-07)The effect of extensive human presence and regular gentle handling performed at an early age (0–3 months old) on stress responses and reactivity of juvenile ostriches towards humans was investigated. A total of 416 ostrich ... -
Effect of hot-deboning on the physical quality characteristics of ostrich meat
(South African Society for Animal Science, 2006)The effects of hot-deboning on the physical meat quality characteristics and shelf-life of ostrich m. gastrocnemius, pars interna (gastroc) and m. iliofibularis (iliof) were investigated during 42 days (d) of refrigeration. ... -
The effect of Moringa oleifera leaf meal supplementation on tibia strength, morphology and inorganic content of broiler chickens
(South African Society for Animal Science, 2014-08-13)This study was conducted to assess the effects of dietary Moringa oleifera leaf meal (MOLM) supplementation as a possible alternative to antibiotic growth promoters on bone breaking strength (BBS), tibia bone morphology ... -
The effect of rumen inert fat supplementation and protein degradability in starter and finishing diets on veal calf performance
(South African Society for Animal Science, 2003)Thirty six Holstein bull calves were divided into six groups to determine the effect of protein degradability and rumen inert fat supplementation in starter and finishing diets on nutrient digestibility and veal production. ... -
Effect of slaughter age and breed on the carcass traits and meat quality of beef steers finished on natural pastures in the arid subtropics of South Africa
(South African Society for Animal Science, 2007)ABSTRACT: Simmentaler cross (SX), Bonsmara cross (BX) and Nguni (NG) steers were raised on natural sweet veld pastures and slaughtered at 18 or 30 months of age. Slaughtering occurred at the end of the wet summer season. ... -
The effects of dietary energy and protein concentrations on ostrich skin quality
(South African Society for Animal Science, 2006)ABSTRACT: The effects were investigated of energy and protein concentrations (with associated amino acid concentrations) in ostrich diets on leather quality of the skins of 50 ostriches. Energy concentrations were 9.0, ... -
Effects of post mortem temperature on rigor tension, shortening and pH in ostrich muscle
(South African Society for Animal Science, 2008)ABSTRACT: Fully developed rigor mortis in muscle is characterised by maximum loss of extensibility. The course of post mortem changes in ostrich muscle was studied by following isometric tension, shortening and change in ... -
Effects of whey, molasses and exogenous enzymes on the ensiling characteristics, nutrient composition and aerobic stability of maize cobs
(South African Society for Animal Science, 2016)The study was conducted to assess the effects of whey, molasses and exogenous enzymes on fermentation, aerobic stability and nutrient composition of ensiled maize cobs. Five treatments were ensiled in 1.5 L anaerobic glass ...
