Department of Animal Sciences
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Effects of Saccharomyces cerevisiae, medium and forage type and their interactions on in vitro ruminal fermentation
(Elsevier, 2020-09)The objective of this study was to investigate the effects of a live yeast, Saccharomyces cerevisiae CNCM I-1077, at four doses (0, 1×105, 1×106 and 1 × 107 cfu/mL) according to the reducing medium used [Goering-Van Soest ... -
Use of pawpaw (Carica papaya) seed in tilapia sex reversal
(Reviews in Agricultural Science, 2020-10-18)Tilapia breeds effortlessly in captivity, with this attribute which is considered as the “Achilles heel” of the species, because it predisposes pond systems to overcrowding and low weight at harvest. Efforts to mitigate ... -
The effect of fenugreek seed cotyledon extract (Trigonella foenum-graecum L.) supplementation on feedlot beef cattle production
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Globally, beef producers are constantly improving and expanding their production systems to keep up with the demand for beef. Consumer preferences further pressure producers to reduce chemicals as ... -
Studies on the response of lambs and ewes to changes in the ambient climate owing to climate change
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: This study investigated the impact of climate instability on neonatal lamb behaviour as a proxy for lamb survival in a winter lambing season in the Western Cape, as well as the impact of increased ... -
The effect of milk replacer intake and level of crude protein in starter feed on dairy bull calf pre-weaning growth parameters and the carry-over effect on post-weaning growth and profitability
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Currently worldwide, during the liquid phase, calves are generally fed conventional volumes (4 L/day) of milk replacer (MR) with ad libitum starter feed ranging between 160 g CP/kg DM and 210 g CP/kg ... -
The preservation of neonate Hermetia illucens larvae for the purpose of long-distance transportation
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Good quality protein sources, which are economically and ecologically sustainable are scarce. Insects are proposed as a sustainable, high-quality protein alternative. Hermetia illucens larvae have ... -
Techniques used to increase the rumen undegradable protein fraction in locally produced plant protein sources
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: With pressure directed towards South African farmers to fulfill the increasing mutton and lamb demand along with increasing commodity prices, the necessity presents itself to make use of more affordable, ... -
An efficiency and economic comparison of conventional and radio frequency identification slaughter readiness methodology in commercial lamb feedlots
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Lamb feedlots are closed intensive systems that takes advantage of high growth rates to rear lambs for carcass production and consumption. Different feedlots use different methods to select slaughter ... -
An in vitro comparison of plant‐based protein sources and their effects on feedlot lamb growth parameters
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Protein supplements are a very costly component of animal feed and the importance of allocating high-quality protein sources that is economically viable, consistent, and sustainable is important. By ... -
Effects of honeybush (Cyclopia subternata) extract on physico-chemical, oxidative and sensory traits of typical Italian salami
(Wiley, 2020-02-18)Honeybush (Cyclopia subternata Vogel) is an indigenous South African shrub enjoyed as hot brewed tea. "Unfermented" honeybush is also a potential antioxidant bioactive extract for foodstuffs due to its polyphenol content. ... -
Polyunsaturated fatty acid, volatile and sensory profiles of beef from steers fed citrus pulp or grape pomace
(Elsevier, 2020-11-28)The present study compared the effects of feeding dried grape pomace (DGP) or citrus pulp (DCP) at 150 g/kg dry matter compared to a control diet on major polyunsaturated fatty acids (PUFA), volatile and sensory profiles ... -
Discriminating muscle type of selected game species using near infrared (NIR) spectroscopy
(Elsevier, 2019-11-02)In this study near infrared (NIR) spectroscopy was used to discriminate between different muscle types within each species of selected game animals, and to classify species regardless of the muscle. Muscle steaks from ... -
Inclusion of Hermetia illucens larvae reared on fish offal to the diet of broiler quails : effect on immunity and caecal microbial populations
(Czech Academy of Agricultural Sciences, 2020-05-30)Hermetia illucens (black soldier fly, BSF) larvae meal has shown to be a good protein source in monogastric animal diets, but published data regarding its immunomodulatory properties is limited. For this purpose, a study ... -
Sericea lespedeza (Lespedeza juncea var. sericea) for sustainable small ruminant production : feed, helminth suppressant and meat preservation capabilities
(Elsevier, 2020-10-10)Small ruminants significantly contribute towards livelihood, food and nutrition security for people living in semiarid low-to-middle-income countries. However, their productivity is largely constrained by feed shortages, ... -
Effect of pawpaw (Carica papaya) seed meal on sex determination, growth, and survival, of Oreochromis mossambicus fry
(AquacultureHub Inc, 2018)The production of monosex tilapia populations is a potential and effective solution for the precocious breeding and indiscriminate spawning that occurs in mixed sex culture systems. This study investigated the possibility ... -
A preliminary study : antibiotic resistance patterns of escherichia coli and enterococcus species from wildlife species subjected to supplementary feeding on various South African farms
(MDPI, 2020-02-28)Studies have shown that antibiotic resistance among wild animals is becoming a public health concern, owing to increased contact and co-habitation with domestic animals that, in turn, results in increased human contact, ... -
Thermal induction of tetraploidy and assessment of selected DNA quantification methods in African sharptooth catfish, Clarias gariepinus
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Producing viable African sharptooth catfish (C. gariepinus) tetraploids has become imperative and potentially beneficial in aquaculture for mass production of sterile triploids, which can be generated ... -
Effect of feed composition and sex on feedlot performance, carcass characteristics and profitability of Dorper lambs
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: The Dorper is the most numerous of the meat sheep breeds in South Africa. However, the early maturity of the breed and its tendency to deposit localised fat at an earlier age, typically requires them ... -
Studies on genetic responses and genomic characterisation in South African and Australian sheep
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: The current scope of small stock breeding in South African (SA) Merinos is constrained. In contrast to Australia (AUS) and New Zealand, no traits indicative of animal resilience or fitness are currently ... -
The application of genomics and transcriptomics for the characterization of the genetic diversity of tick-resistance in Angus, Brahman, Nguni, and Santa Gertrudis cattle artificially infested with Rhipicephalus microplus and Rhipicephalus decoloratus
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Tick resistance is a complex polygenic trait that is governed by immuno-genetic mechanisms that are currently not fully understood. It is, however, currently accepted that the Bos indicus, Zebu and Sanga ...
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