The South African Journal of Animal Science is an open access journal. The journal publishes reports of research dealing with production of farmed animal species (cattle, sheep, goats, pigs, horses, poultry and ostriches), as well as pertinent aspects of research on aquatic and wildlife species. All submitted articles are subjected to a single-blind peer review process that is managed by a sub-editor under the supervision of the editor-in-chief. Copyright of a published article resides with the authors. Such articles will be published as open access content and be covered by the terms of the Creative Commons Attribution 4.0 South African Licence. Users may copy, distribute, transmit and adapt the work, but must recognise the authors and the South African Journal of Animal Science.
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Effect of different levels of Labazyme supplementation on production and biochemical traits in quail
The study was conducted to determine the effect of different levels of Labazyme (a multi-enzyme with probiotics) on production and biochemical traits in quail. A total of 180 quail were housed in 12 pens; each group was randomly allocated to…
Comparative energy value of cooked grease recovered from rinse-trap water lines used as dietary fat source for feedlot lambs
The objective of this experiment was to compare the effects of dietary supplementation with cooking grease recovered from rinse-trap water lines (rinse-trap grease; RTG) versus conventional supplemental fats (tallow; TL, and yellow grease; YG) on 84-d growth performance, dietary energy,…
Effect of various pH levels on the sperm kinematic parameters of boars
The objective of this work was to identify the effects of pH on the structure of kinematic sperm subpopulations using commercial doses of boar semen diluted in Androstar Plus extender. We adjusted the pH value of the diluted semen samples…
Performance and meat quality of broiler chickens fed diets containing hydroethanolic extract of guavira seed or peel
The dietary inclusion of hydroethanolic extract of guavira seed or peel was evaluated on broiler performance, intestinal morphometry, carcass yield, and meat quality. A total of 1,680 male chicks, one day old, were distributed in a 2×5+2 factorial design (hydroethanolic…
A field study of Bacillus licheniformis-fermented products on growth performance and faecal microbiota of weaning piglets
This study investigated the effects of Bacillus licheniformis-fermented products (BLFPs) on the growth performance, faecal microbiota, and antibiotic resistance gene (ARG) expression in weaning piglets on a commercial farm. Ninety-six weaning piglets were randomly assigned to four treatments as follows:…
Influence of reduced dietary protein level on quality of pork carcasses in Windsnyer pigs
To promote the sustainable production of local pigs, their dietary protein requirements need to be determined. Meat production from these pigs when fed on appropriate diets, coupled with their adaptability to climatic extremes and disease and parasite challenges, could be…
MC4R gene polymorphisms for classification of growth efficiency and carcass measurements in two rabbit breeds in Egypt
Melanocortin 4 receptor (MC4R), a protein derived from the MC4R gene, is involved in feed intake, metabolism control, and body weight regulation in humans. The purpose of this research was to explore MC4R polymorphisms alongside metabolic marker changes and their…
Effects of different additions to Italian ryegrass (Lolium multiflorum Lam.) on silage quality
This research was carried out to determine the effects of different additions (urea and molasses) to Italian ryegrass (Lolium multiflorum L.) silage on fermentation, in vitro gas production, microbiological properties, in vitro digestibility parameters, and relative fodder quality (RFQ) in…
Effects of oregano essential oil and capsicum extract supplementation on slaughter characteristics, meat quality, and fatty acid composition of lambs
The aim of this study was to evaluate the effect of oregano essential oil (OEO) and capsicum oleoresin extract (CAO) supplementation on lamb slaughter characteristics, meat quality, and fatty acid composition. In the study, 18 male and 18 female lambs…
Effect of extrusion with molasses on the rumen undegradable protein fraction of canola oilcake meal and sweet lupins
The effect of the extrusion of canola oilcake meal (COM) and crushed sweet lupins (CSL) with molasses on the dry matter (DM) and crude protein (CP) degradability was determined in situ. Locally sourced (SOILL Moorreesburg, South Africa) COM and CSL,…
Morula (Sclerocarya birrea) kernel cake as a partial soybean meal replacer in Ross 308 broiler diets: Effects on feed utilisation, growth performance, and selected blood parameters
The effects of replacing soybean meal (SBM) with graded levels of morula kernel cake (MKC) on growth performance and haemo-biochemical parameters in broiler chickens were studied. Four iso-nitrogenous and iso-caloric diets were formulated by replacing the SBM component at 0,…
Mitigating heat stress in broiler chickens using dietary onion (Allium cepa) and ginger (Zingiber officinale) supplementation
The objective of this study was to evaluate the effect of dietary onion (Allium cepa) and ginger (Zingiber officinale) supplementation on growth, carcass quality, antioxidant status, and immune response in broilers under heat stress. A total of 700 day-old Hubbard…
Dietary supplementation with vegetable oils with low n-6:n-3 polyunsaturated fatty acid ratios improves the intramuscular fat and fatty acid composition of growing-finishing pigs
This study investigated the effects of different n-6:n-3 polyunsaturated fatty acid (PUFA) ratios in pig diets using vegetable oil supplementation on growth performance, carcass characteristics, meat quality, and fatty acid composition in the longissimus dorsi muscle (LM) and subcutaneous adipose…
Responses of broiler chickens fed diets containing sunflower meal and wheat middlings pre-treated with enzymes
The effects of feeding diets containing sunflower and wheat middlings pre-treated with fibre-degrading enzymes were investigated. Based on hatch body weight (BW), 288 Ross-708 male broiler chicks were placed in cages (six birds/cage). Diets were: 1) positive control (PC), a…
Pre-rut behavioural changes in farmed red deer with reference to atmospheric conditions
Red deer (Cervus elaphus) exhibit specific behaviour during the rutting season, which may have an impact on the safety on cervid farms, both due to aggressive interactions between animals and the safety of people staying there, such as staff and…
Influence of a Piriformospora indica plant-specific fungus and clove essence on broiler health and performance parameters during oxidative stress
The aim of this study was to evaluate the effects of dietary Piriformospora indica (PI) and clove essence (CE) and a combination of them (synbiotic) on performance and biochemical parameters after induction of stress using dexamethasone. The experiment was performed…
The effect of β-carotene and vitamin E on metabolic profiles in nutritionally flushed sheep
This study aimed to investigate the effects of β-carotene and vitamin E on serum biochemistry, body condition score, and the number of offspring in sheep during the flushing period. To this purpose, forty Romanov sheep 45 (±1 kg) body weight…
Crambe cake protein as a replacement for soybean meal protein: Intake, digestibility, and ruminal parameters in lamb diets
The objective was to evaluate different levels of crambe cake protein (0, 250, 500, 750 and 1000 g/kg of DM) to replace soybean meal protein on the intake, apparent digestibility coefficient (ADC), blood glucose, ruminal fermentation, and protozoal population in…
Effect of microRNA, miR-215, on gene expression and metabolism of porcine intestinal epithelial cells
MiR-215 maintains a high level of expression in healthy pig intestine and is decreased in lesions or injuries. To clarify the influence of miR-215 on the porcine intestine, miR-215 mimic/inhibitor was transfected into the intestinal porcine epithelial cell line, J2…
Seasonal effects of Rhus lancea and Celtis africana on intake, preference, and physiological responses in South African indigenous goats
This study investigated the seasonal effects of Rhus lancea and Celtis africana leaves on preference, intake, weight, and serum metabolites in South African indigenous, mature, male goats. Twelve mature, male goats weighing 34 ± 5.9 kg (mean ± SD) were…