https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:28757 Wed 13 Mar 2024 14:10:22 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26312 Wed 12 May 2021 23:48:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20974 Wed 12 May 2021 23:40:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39519 Wed 12 May 2021 23:35:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:21368 Wed 12 May 2021 22:42:13 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29020 Wed 12 May 2021 22:39:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20519 Wed 12 May 2021 22:26:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:22477 Wed 12 May 2021 20:35:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:35091 Wed 12 May 2021 20:17:55 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28775 Wed 12 May 2021 20:10:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:34368 0.05) among the varieties. The highest fresh biomass yields were observed in PAN 888 variety was 13400 kg/ha, King had 12600 kg/ha and PAN 868 had 12600 kg/ha. The dry matter yield observed in PAN 888 was 4300.00 DM kg/ha, PAN 868 had 3633.33 DM kg/ha and King yielded 3533.33 DM kg/ha. The different sorghum varieties showed a significant (P<0.01) difference in some chemical composition parameters namely DM, NDIN and NSC. The different sorghum varieties had significant difference (P<0.01) in the silage fermentation parameters of pH, starch and lactic acid. The sorghum silage varieties were significantly (P<0.01) different in the starch fermentation with values of 0.001percent. The sorghum silage varieties were significant different for fermentation of lactic acid with values ranging from 1.99 to 2.62percent. However, PAN 868 and PAN 888 were not different from each other. Similarly, all varieties were different (P<0.05) in the pH with values ranging from 4.16 to 4.53. There were no significant (P>0.05) differences in CP, Fat, NDF, ADF, Hemicellulose, Ash, and ADIN content of the silages. The mineral composition (macro and micro) of the silage were not significantly (P>0.05) different among the varieties. In conclusion, the dry matter production and nutrient content of the three forage sorghum varieties were not significantly different. The silage fermentation quality showed significant (P<0.05) differences among the three sorghum varieties. Therefore, according to the results of this study PAN 888 is the recommended variety to grow in the semi-arid region of the Eastern Cape.]]> Wed 12 May 2021 20:09:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27542 Wed 12 May 2021 20:07:17 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39800 Wed 12 May 2021 20:04:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:21334 Wed 12 May 2021 19:58:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39299 Wed 12 May 2021 19:55:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39132 Wed 12 May 2021 19:47:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28924 Wed 12 May 2021 19:36:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25998 Wed 12 May 2021 19:35:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28616 Wed 12 May 2021 19:28:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30805 Wed 12 May 2021 19:24:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:34288 Wed 12 May 2021 19:23:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25021 Wed 12 May 2021 19:13:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25532 Wed 12 May 2021 19:09:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20711 Wed 12 May 2021 18:56:43 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25993 Wed 12 May 2021 18:54:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29439 Wed 12 May 2021 18:50:12 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28712 Wed 12 May 2021 18:32:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27361 Wed 12 May 2021 18:30:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27039 Wed 12 May 2021 18:21:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29521 Cu>Hg>Pb. The Pb and Hg mean concentration was recorded above permissible limits, while the Mn and Cu were within the normal range suggested by WHO. In both water and Acacia karroo samples the Cu was not detected. The trend of metal concentration in water sample was found to be in this order Hg> Mn > Pb> Cu, while in Acacia karroo metal concentration is Hg> Mn> Pb> Cu. The one-way ANOVA test was used to compare the mean concentration of selected metals in each sampling site. The results show that there is a statistically significant difference between the mean concentrations of selected metals; this is supported by the value of F-static and p-value (p <0.05)]]> Wed 12 May 2021 17:59:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27017 Wed 12 May 2021 17:55:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:35211 drum biochar> control. Also, the two maize biochar types significantly (p< 0.05) increased the release of cations namely Ca, Mg and Na however, some decrease in nutrient concentrations were observed due to increase in pH levels at the later stage of the study. Biochar incorporation increased extractable P release from 30- 40 mg P/kg to an average range of between 120- 160 mg P/kg across all soil types. A glasshouse study was also conducted investigating the effect of different biochar rates of the two maize biochar types used in the previous studies on early maize growth and nutrient uptake, same soil types were used as those in the incubation study. Biochar was applied at application rates of 0, 100, 200 and 300 kg C/ha of biochar. The glasshouse experiment consisted of two cycles, each with a six week period of monitoring maize seedling growth development. Generally, a significant increase in maize growth parameters such as plant height, stem girth, number of leaves and leaf area increased after biochar additions compared to the control. Both biochars significantly improved maize seedling growth at an application rate of 200 kg C/haHowever, the two biochar types displayed varying impacts on maize growth due to influence of soil type and biochar application rates. Nutrient- uptake of Ca, P, Na and Mg showed to improve at an application rate of 200 kg C/ha for both biochar types showing a 50 percent increase compared to the control. Nutrient- uptake patterns for P, Ca, Mg and Na differed across all soil types, mainly due to changes in pH and Na levels which were influenced by increased biochar concentrations resulting in nutrient deficiency. Another glasshouse experiment aimed at investigating the effects on the two maize biochar types on influencing the effectiveness of both organic and inorganic fertilizers for improved early maize growth and soil productivity. Biochar was applied at an application rate of 400 kg C/ha of biochar, fertilizer was applied at application rates of 0, 10, 20, 30 and 40 kg N/ha and manure at 0, 10, 20, 30 and 40 t/ha respectively. The glasshouse experiment consisted of two cycles, each with a six week period of monitoring maize seedling growth development. In the 1st cycle, manure rate of 40 t/ha resulted in the highest plant height of maize seedlings grown in the glasshouse, biochar type also showed to influence plant height. After the 1st harvest Mg, K and P levels improved at 30 t/ha, Na at 20 t/ha and Ca 40 t/ha of manure. Plant height and stem girth improved at 30 kg N/ha of fertilizer, however, nutrient levels for Ca, K and Mg decreased after the 1st harvest, while Na levels increased. Nutrient uptake was the highest for Mg and Na at 40 kg N/ha while for Ca at 30 kg N/ha of fertilizer. During the 2nd cycle plant height was the highest at 30 t/ha of manure, and effect of manure rate was significant (p<0.05) for number of leaves, plant height and biomass. Whereas, manure rate and biochar type effect were insignificant (p>0.05) for pH, Ec and nutrient uptake changes. Maize seedling showed significant response to fertilizer 40 kg N/ha for most of the growth parameters measured (P<0.05), except for germination percentage. All treatments investigated had no effect on germination percentage. The two biochar types showed significant (p<0.05) effects on soil pH and Ec. Drum biochar was slightly better performing than pit biochar. Results obtained from the various studies suggests that maize biochars derived from the pit and drum pyrolytic systems are potential soil amendments in correcting soil acidity and nutrient deficiency in the EC Province. Both biochar types have shown abilities to improve early maize growth and effectiveness of fertilizers in maize based systems of the EC Province. However, some variations in soil fertility and early maize growth were observed as a result of the soil type response towards the two biochar applications. This could also have risen as a result of a number of factors such as the nutritional composition of biochar material, initial soil type chemical composition, biochar and fertilizer application rates and time taken or period to complete each study. Therefore, further experiments should be conducted to validate these results, preferable having longer periods of study, moreover, field experiments. In addition, investigations on potential feedstock materials such as animal wastes used as biochar in the EC Province can be conducted.]]> Wed 12 May 2021 17:55:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27451 Wed 12 May 2021 17:47:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30773 0.05) in the number of shoots per plant, stems per shoot and coppice stems produced by the three C. cajan varieties at vegetative and flowering stage. There was a significant difference (P<0.05) in the heights of plants recorded by the varieties only at flowering stage. The yields of fresh biomass in C. cajan was significantly different (P<0.05) across all the varieties harvested in 2016. In all the varieties there was a significant difference (P<0.05) in dry matter yield in both seasons of 2016 and 2017. The effect of browse varieties and drying methods showed a significant effect (P<0.05) on DM, CP, fat, NDIN, ADIN and hemicellulose content of varieties. There was little impact by varieties and drying methods (P<0.05) on ash, NDF, ADF, ADL, TNC and cellulose content of varieties. Varieties and drying method had no effect (P>0.05) on Ca, Mg and K except for Na and P. There was no effect caused by varieties and drying methods (P>0.05) on Zn and Mn with Cu and Fe being the exceptions. Oven drying showed an overall reduction in the tannin concentration on leaves while there was an increase in saponins. The different varieties had no effect (P>0.05) on the IIR, 0.0275±0.0089, 0.0275±0.0077 and 0.0409±0.0109 for Cv1, Cv2 and Cv3, respectively. The day of the trial and browse variety had an effect (P<0.05) on bite rate. However, the day of trial had no significant effect (P>0.05) on both bite size and the instantaneous intake rate. Individual goat had a significant effect (P<0.05) on bite rate. There was a significant difference (P<0.05) in the in vitro and in sacco rapidly degradable fractions (a) of all the three varieties but the drying method had no effect (P>0.05). The slowly degradable fraction (b) and degradation rate constant (c) of all varieties was not significantly different (P>0.05) on both drying methods during IV DaisyII procedure. However, b and c, in all the varieties was significantly different (P<0.05) in both drying methods during the in sacco procedure. There was no significant difference (P>0.05) in the mean potentially degradable fraction (a+b) across all C. cajan varieties during IV DaisyII procedure, however a+c of all varieties was significantly different (P<0.05) in both the drying methods during the in sacco procedure. The effective in vitro and in sacco degradability of the varieties was significantly different (P<0.05) with a rumen outflow rate of 2, 5 and 8 percent per hour. The shade-dried varieties had a higher (P<0.05) ED than the oven-dried materials during IV DaisyII and the in sacco procedures. It was concluded that the decline in yield of C. cajan during the study is a reflection of poor survival, the insufficient regeneration from seed, nutrient depletion over time and the extended dry seasons. Therefore, shade drying is commended method of drying forages.]]> Wed 12 May 2021 17:44:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39175 Wed 12 May 2021 17:39:14 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25996 Wed 12 May 2021 17:32:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28502 Wed 12 May 2021 16:40:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20739 Wed 12 May 2021 16:21:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20743 Wed 12 May 2021 16:10:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:34182 Wed 12 May 2021 16:01:13 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27880 Wed 12 May 2021 15:59:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20725 Wed 12 May 2021 15:59:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:22478 Wed 12 May 2021 15:58:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28711 Wed 12 May 2021 15:47:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39225 0.05) that when off-loading. A significant difference was determined on the avoidance (χ2=0.03), mounting behaviour (χ2 =0.01) and vocal sound (χ2 =0.02) during loading time on each observation day. Furthermore there was no significant difference determined on the time and day of observation in the lairages. These results also reveal that the avoidance behaviour was the highest (47percent) while fighting (34percent) and vocalizing were the least compared to other behaviour during the first 30 minutes after arrival at the abattoir. Moreover, the lying behaviour was found to have highest frequency (15percent) on day 6 compared to other sampling days. These results reveal that time of loading pigs had an influence on pigs’ behaviour before slaughter and consequently that affected physiological features and meat quality. The second section of the study assessed sex and the different lairage time effects on the pork quality attributes. A total of fifty four pigs, 22 weeks old of different sex (26 boars x 28 gilts) reared on a commercial farm and transported to the abattoir on the same day was used in this study. At the abattoir, pigs were grouped according to lairage periods of 17 hours (Group1; 13 gilts and 14 boars) and 36 hours (Group 2; 15 gilts and 12 boars). Results showed no significant difference on the sex of pigs (P >0.05) and meat pH. However, lairage time influenced the thawing loss (P= 0.02) of meat and also the interactions of sex by lairage had a significant difference (P= 0.04) on meat tenderness. There was a positive significant correlation found between sex and meat attributes values were high in boars (r= 0.61) than in gilts (r = 0.49). A negative correlation between a*and WBSF on lairage group1 (r= -0.52) was determined while on group 2 there was a positive correlation between a* and b* (r=0.49). This study suggest that a proper timing on farm feed withdrawal in combination with a sufficient lairage at the slaughter plant may result in better carcass and meat quality traits. Communication among producers and abattoirs is critical when planning the fasting and lairage times in order to elude carcass and technological pork quality complications. To conclude, there is influence caused by time of loading in stressing pigs before transportation and slaughter as aggressive behaviour showed and also lairage time affected meat quality.]]> Wed 12 May 2021 15:47:43 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40459 Wed 12 May 2021 15:09:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40507 Wed 12 May 2021 14:54:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40255 Wed 12 May 2021 14:53:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39071 Tue 07 May 2024 11:01:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29334 0.05) amongst the treatments. The most cost efficient feed (which accumulated the cheapest cost feed per kg were) T1 (R11.32) and T3 (R11.32) although there was a slight difference in the gross profit of these treatments T1 (R45.71) and T3 (R44.48). Carcass characteristics were the same (P > 0.05) across the treatments except for the wing, thigh, drumstick and the breast (P < 0.05). T2 had the highest wing weight (166.63±8.60), T1 (113.03±8.60) and the lowest in T3 (74.46±8.60). The thigh weight were greater (P<0.05) in T2 (185.69±4.34); T1 (185.54±4.34) compared to T3 (166.97±4.34) which was lower. Treatments 1 (204.17±6.57), T2 (197±6.57) had heavier (P<0.05) breast weights than T3 (186.06±6.57). Dietary treatments had no significant effect (P > 0.05) on pH of the breast meat. No differences were observed in colour during the 1 hour period after slaughter. At 24 hours after slaughter, the L* values were different (P < 0.05) in T1 and T2 (44.3 ± 0.37; 43.7 ± 0.37), respectively, T1 and T3 were the same. The a*-values were different (P < 0.05) at 48 hours after slaughter for T1 and T3 (4.5 ± 0.27; 3.4 ± 0.27), T2 was the same as T1. It was therefore, concluded that since manipulation of starter phase did not have adverse effects on growth performance, gross profit, slight statistical difference in meat quality attributes and carcass characteristics. Therefore, the manipulation of starter diet has the potential to be used in broiler production.]]> Tue 07 May 2024 10:54:19 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30987 Tue 07 May 2024 10:26:12 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28094 Tue 07 May 2024 10:12:25 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25988 Thu 29 Sep 2022 14:20:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30779 Thu 20 Jun 2024 12:24:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:31530 Thu 13 May 2021 13:09:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:34222 Thu 13 May 2021 09:32:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27007 0.03 ha), had a higher salinity (oligohaline, mesohaline and polyhaline conditions) and a constant water body. Micro-outlets were smaller (< 0.03 ha), had a lower salinity (oligohaline conditions were most common) and showed periods of drying. Five micro-estuaries (Shelbertsstroom, Kwesani, Cunge, Mtwendwe and Mtendwe) and five micro-outlets (Stromatolite, Sandy Bottom, Ichabana, Palm Tree and Black Rock) were classified. This study has shown that the micro-estuaries along the Eastern Cape coast are pristine (i.e. intact riparian zone and catchment), untouched and highly dynamic systems (i.e. great variation in water surface area and mouth condition) highlighting their need for protection.]]> Thu 13 May 2021 08:51:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25445 Thu 13 May 2021 08:50:20 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:21328 Thu 13 May 2021 08:20:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28215 Thu 13 May 2021 08:04:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25535 Thu 13 May 2021 07:33:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28435 Thu 13 May 2021 07:00:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20708 Thu 13 May 2021 06:34:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27029 Thu 13 May 2021 06:18:08 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27028 Thu 13 May 2021 05:53:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27021 Thu 13 May 2021 05:40:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30798 Thu 13 May 2021 05:31:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28915 Thu 13 May 2021 05:23:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27842 Thu 13 May 2021 05:19:03 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28114 Thu 13 May 2021 05:09:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28687 Thu 13 May 2021 04:56:19 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:24721 Thu 13 May 2021 04:51:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27578 Thu 13 May 2021 04:50:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29458 Thu 13 May 2021 04:40:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:34183 Thu 13 May 2021 04:37:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29933 Thu 13 May 2021 04:33:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26311 Thu 13 May 2021 04:29:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:21248 Thu 13 May 2021 04:27:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20808 Thu 13 May 2021 04:26:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29481 Thu 13 May 2021 04:22:29 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28497 Thu 13 May 2021 04:16:49 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:31535 Thu 13 May 2021 04:12:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28738 Thu 13 May 2021 03:36:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:30783 Thu 13 May 2021 03:05:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:21326 Thu 13 May 2021 03:05:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20741 9 mm in stem basal diameter (SBD)). Browsing had a strong negative effect on seedlings, resulting in reduced investment in leaf biomass. These findings suggest plant size and age can be used as robust predictors of a plants vulnerability to browsing. An increase in tree cover requires successful transitions of seedlings to saplings (also known as release). The results of this study suggest that in semi-arid savannas, browsing can impact tree cover through imposing a release bottleneck for tree seedlings and to lesser extent saplings. By limiting tree growth plants are kept in a disturbance trap and will therefore be exposed to not only browsers but fire. These findings also have important implications for tree-grass coexistence dynamics, suggesting that specific size and browsing thresholds should be considered in savanna management.]]> Thu 13 May 2021 03:02:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20982 Thu 13 May 2021 02:08:17 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20742 Thu 13 May 2021 01:52:58 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:39118 Thu 13 May 2021 01:05:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:31522 Thu 13 May 2021 01:05:12 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28735 Thu 13 May 2021 01:01:29 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29457 Thu 13 May 2021 00:45:40 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28189 Thu 13 May 2021 00:34:54 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20709 Thu 13 May 2021 00:30:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27834 Thu 13 May 2021 00:20:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:25408 Thu 13 May 2021 00:20:11 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:20722 Mon 12 Jun 2023 15:48:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27316 Fri 15 Mar 2024 13:00:29 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:27011 Fri 15 Mar 2024 12:25:14 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:37837 Fri 15 Mar 2024 09:30:02 SAST ]]>