https://commons.ufh.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39129 0.05). High (P < 0.05) mortality was observed on broilers fed diet with 0% VBSM compared to those fed diets comprising of VBSM. The diets did not have an effect (P > 0.05) on thigh meat pH24, lightness, redness, and WBSF. Cooking loss (25.69%) was higher (P < 0.05) in thigh meat of broilers fed the control diet. Breasts shear force (14.20) was higher in T4. Cooking loss of breast meat from broilers on T1 and T2 was higher (P < 0.05) than those from other treatments. Breast meat colour (P > 0.05) was not influenced by diets. It can be concluded that the VBSM has an effect on feed intake, growth performance and mortality of broilers, except on FCR and dressing percentage. It was also concluded that the VBSM can be included in broiler diets up to the level of 15% without negatively affecting the quality of meat.]]> Wed 12 May 2021 22:26:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39154 0.05) differences. The protein and salt content were significantly higher in frozen-thawed (24.3 and 0.13%) muscles than in fresh muscle (20.2 and 0.08%); whereas the fat content and pH were lower (P<0.05) in frozen-thawed (5.36) compared to fresh muscles (5.51). Between muscles, the moisture, salt content, and pH were higher in BF muscles than in SM muscles (73.2, 0.12% and 5.49). Aw was affected by the interaction between freezing and muscle type, with frozenthawed SM having lower Aw (0.990). During salting, salt, weight and water gain did not show any differences (P<0.05). There were no major significant differences after salting. There were lower TBARS and pH in frozen-thawed (1.5mgMDA/kg and 5.15) muscles than in fresh muscles (3.3mgMDA/kg and 5.19) as well as in SM muscles (1.8mgMDA/kg and 5.16) than in BF muscles (3.0mgMDA/kg and 5.19). The moisture was significantly lower in frozen-thawed SM (68.1%) than in fresh SM, BF and frozen-thawed BF (69.3,70.5 and 71.7%) after salting. On the final product, the interaction between muscle type and freezing affected the moisture content, TBARS, chewiness and the springiness of biltong, with the biltong from fresh SM (39.8%) having significantly lower moisture content compared frozenthawed BF and ST muscles as well fresh BF muscles (42.8% in average). The TBARS were higher in biltong from fresh BF muscles (5.1mgMDA/kg) compared to other muscles. Furthermore, the chewiness and springiness were higher (P<0.05) in biltong produced from SM frozen-thawed muscles (327.7N and 1.5). The WBSF was higher in biltong from the BF muscles (108.8N) than in the biltong from SM (80.1) but it was not affected by the freezing effect (P>0.05). Freezing did not show any major differences in biltong. iv The third experiment was conducted to determine the effect of freezing African buffalo carcasses on weight loss during salting, physico-chemical and textural properties of biltong. Five muscles (ST, SM, BF, LTL, and RF) were randomly selected from 30 carcasses (15 frozen-thawed and 15 fresh), cut along the grain, traditionally salted and dried at 26oC till they lost 45-50% of their initial weight. The salting weight loss was higher in frozen-thawed muscles (-1.45%) than in fresh muscles (-0.89%). The freezing treatment affected the physico-chemical properties of the biltong. The biltong produced from frozen-thawed muscles showed significantly higher protein and ash (47.6 and 7.6%) compared to fresh (43.9 and 7.1); whereas the moisture, fat, pH and Aw were lower (43.7, 2.1, 0.870 and 5.30, respectively) compared to those of biltong from fresh muscles (45.5%, 2.9%, 0.890 and 5.38). The moisture, pH and fat content were further affected by muscle type. The interactive effect was observed in salt content, with RF frozen-thawed showing higher salt content (8.2%) compared to all other muscles. The hardness and WBSF were significantly higher (P<0.05) in biltong frozen-thawed (204.1N and 135.0N) than in fresh muscles (146.2N and 113.1N). Moreover, the chewiness and springiness were affected (P<0.05) by muscle type, with RF muscle having higher springiness 0.89 and chewiness 171.1N than all the other muscles. Therefore, it can be concluded that freezing buffalo carcasses significantly influenced the quality characteristics of biltong. The fourth experiment studied the effect of drying methods on physico-chemical properties of traditional biltong produced from African buffalo muscles. The BF and SM muscles were randomly selected from 15 fresh carcasses, cut into strips, salted and divided into two batches per muscle. The first batch of each muscle type was dried in the ambient-air drier at 22oC average and the second batch in the cabinet drier at 26 oC till 45-50% weight loss. No differences (P>0.05) were observed in salting weight loss between the drying method and muscle type. The protein content was significantly higher in SM (46%) muscles compared to v BF (43%) but there was no effect (P>0.05) caused by the drying method. The interactions between the muscle type and drying method affected the fat content, with biltong from airdried BF muscles having significant lower (2.1%) fat content. There were no significant differences in other physico-chemical properties of biltong, with moisture content, salt, ash content, Aw and pH being 45.0%, 5.13%, 44.8%, 7.3%, 2.7%, 0.885 and 5.61 on average, respectively. Overall, the findings of the study show that freezing does have a significant effect on the final quality of biltong. However, it can be concluded that a significant effect on the physico-chemical properties of biltong depends on the changes of mass transfers during salting and drying.]]> Wed 12 May 2021 20:21:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39076 Wed 12 May 2021 20:01:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39066 0.05), and gender (∆R2 = .000, ∆F (1,1223) = .036, p>0.05) emerged as better predictors. The study further iv revealed that, Grade six learners with visual learning style ( = 13.242, SD = 5.565) had the best performance in Mathematics at Buffalo City, followed by learners with auditory learning style ( = 12.996, SD = 3.883), and learners with Kinaesthetic learning style ( = 11.525, SD =3.800). The study concluded that one of the most fundamental issues to consider in improving Mathematics performance is the understanding of the learners’ learning styles and effective use of appropriate instructional materials for teaching Mathematics.]]> Wed 12 May 2021 19:59:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39259 Wed 12 May 2021 19:57:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39067 Wed 12 May 2021 19:41:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39258 Wed 12 May 2021 18:21:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39265 Wed 12 May 2021 18:19:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39285 Wed 12 May 2021 17:18:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39070 Wed 12 May 2021 16:40:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39149 Wed 12 May 2021 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https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41973 Wed 12 May 2021 14:40:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42888 Wed 12 May 2021 14:40:46 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43004 Wed 12 May 2021 14:39:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42999 Wed 12 May 2021 14:38:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41978 Wed 12 May 2021 14:38:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42581 Wed 12 May 2021 14:36:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41996 Wed 12 May 2021 14:36:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42610 Wed 12 May 2021 14:35:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41994 Wed 12 May 2021 14:35:26 SAST ]]> 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https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42997 Wed 12 May 2021 14:20:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42251 Wed 12 May 2021 14:19:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42728 0.05) on pH and drip display, however, there was an increase in drip display with ageing time (P ≤ 0.05). Meat colour attributes (L* a* b* and C*) were influenced by diet, with 20% cactus diet having lower L* values compared to other diets (P ≤ 0.05). During a 14-day retail display, a diet  day interaction was observed for hue angle with the cactus diets having the lowest values at day 14 of display compared to the other diets (P ≤ 0.05). Differences in meat from heifers fed different diets were observed with 20% cactus accounting for significantly (P ≤ 0.05) higher levels of deoxymyoglobin and the lowest levels of oxymyoglobin. Thawing loss and Warner Bratzler shear force decreased (P ≤ 0.05) with ageing period. Meat from heifers fed cactus diets had lower (P ≤ 0.05) proportions of oleic acid (C18:1n9c) and total MUFA, higher (P ≤ 0.05) proportions of total SFA, C15:1, C17:1, linoleic acid (C18:2n6c) and total PUFA. The control diet produced meat with the highest thiobarbituric acid reactive substances (TBARS) values compared to other diets (P ≤ 0.05) and with ageing TBARS values increased (P ≤ 0.05). Diet showed an effect (P ≤ 0.05) on sensory attributes such as overall tenderness and mouth feel with cactus diets accounting for lower scores. However, juiciness, overall tenderness, grassy and animal like attributes increased with ageing (P ≤ 0.05). Inclusion of cactus in the diet did not produce any adverse effects on meat quality, fatty acid composition, lipid oxidation and sensory quality. Therefore, it can be concluded that inclusion of cactus in Nguni heifer finisher diets up to 20% can improve meat quality.]]> Wed 12 May 2021 14:16:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42612 1:8:1>6:3:1>8:1:1 indicating the trend of ratio 3:6:1 appeared to have higher reduction rate than the rest of the material and it had far less ΔEpp than the rest of other ratios. All CV curves for both pristine MoS2 NFs and carbon supported MoS2 NFs confirmed a distinct Faradic characteristic. The VS2 nanosheets (NSs) and carbon supported VS2 NSs were also effectively synthesized via hydrothermal method. The SEM micrographs for VS2 NSs and carbon supported VS2 NSs samples reveals level increased. Furthermore, SEM-EDX analysis have confirmed the presence of V and S as well as C and O on carbon supported VS2 nanocomposites, and it clearly shown a gradually blending as the ratios increases. The structural studies through XRD analysis have revealed peaks at 2θ angles of 15.4◦, 28.2◦, 34.2◦, 36.2◦, 43.3◦,48.3◦, 54.4◦, 57.7◦ and 66.2◦ which correspond to the lattice planes (001), (002), (100), (011), (102), (003), (110), (103) and (201) belonging to hexagonal VS2 (H-VS2) crystalline phase as per JCPDS card 36-1139. The HRTEM have revealed that the VS2 NSs have an edge to edge length of ~ 0.294 – 1.248 µm. Also, HRTEM micrographs of VS2 NSs have revealed interplanar d spacing of 0.571 nm belonging to the (001) lattice plane of hexagonal VS2 (H-VS2) structure. FTIR analysis have shown a peak at 558 cm-1 attributed to V-S which is evident that sulfur has bonded with the metal (V) and is in agreement with EDS. CV, CD and EIS measurements have shown that the ratio 1:8:1 is more superior to VS2 NSs and other carbon supported VS2 NSs. Based on Rreduction for the carbon supported nanosheets VS2 nanosheets are ordered as 1:8:1>3:6:1>6:3:1>8:1:1. Carbon supported VS2 NSs of the mole ratio 1:8:1 showed a small resistance of 0.32 Ω. This is further evidence that the carbon supported VS2 NSs of the mole ratio 1:8:1 in addition to revealing excellent catalytic behaviour is also more chemically stable and has good conductivity properties._________]]> Wed 12 May 2021 14:16:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43001 Wed 12 May 2021 14:14:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42236 Wed 12 May 2021 14:11:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42241 Wed 12 May 2021 14:11:34 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43006 Wed 12 May 2021 14:07:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41999 Wed 12 May 2021 14:06:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42003 Wed 12 May 2021 14:06:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42234 Wed 12 May 2021 14:04:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42002 Wed 12 May 2021 14:04:49 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42726 Wed 12 May 2021 14:02:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42256 Wed 12 May 2021 14:01:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42580 PdNi-rGO (8.4.%) > PdCo-rGO (6.56%) > Pt (5.7%) which were better than the platinum efficiency in the cobalt redox mediator. The higher efficiency in the cobalt redox mediator relative to the iodine electrolyte illustrates that they are viable alternatives to the, corrosive and volatile iodine. Obtained results show that, the high recombination rates between the photogenerated electrons and the oxidized dye molecule which have been reported to reduce power conversion efficiency in one electron redox mediators did not affect the performance of the cell. However, these higher recombination rates affected the ferrocene electrolyte leading to extremely poor efficiency metrics. The obtained results indicated that reduced graphene oxide supported PdNi-rGO, PdNiCo-rGO as well as the unsupported PdNi3 alloys could successfully be implemented as substitutes to the platinum counter electrode in dye sensitized solar cells. The application of the palladium alloys is vital for improving stability and power conversion efficiency, as well as reducing cost.]]> Wed 12 May 2021 14:01:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42266 Wed 12 May 2021 14:00:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42607 Wed 12 May 2021 14:00:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42231 Wed 12 May 2021 14:00:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42727 Wed 12 May 2021 13:59:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42732 Wed 12 May 2021 13:58:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42611 Wed 12 May 2021 13:58:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42575 Wed 12 May 2021 13:57:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42734 Wed 12 May 2021 13:56:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42245 Wed 12 May 2021 13:56:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42729 Wed 12 May 2021 13:55:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42613 Wed 12 May 2021 13:54:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42995 Wed 12 May 2021 13:53:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42009 Wed 12 May 2021 13:51:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42246 Wed 12 May 2021 13:50:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42811 Wed 12 May 2021 13:48:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42542 0.05) from wethers on 4% FSF as well. The total protein concentration, albumin, total bilirubin, Na, K, glucose, cholesterol, and liver enzymes were normal for wethers. However, serum creatinine level was lower in wethers fed on 4% FSF than those on 0% FSF (P < 0.01). Haemonchus and Coccidian fecal egg counts were low in wethers fed diets with 2%, 4%, and 6 % FSF (P < 0.01) compared 11 with wethers fed with 0% FSF inclusion level during the same period. The body condition score of wethers fed on diets with 2%, 4%, and 6% FSF inclusion levels were higher than those on 0% (P < 0.05). Wool yield, staple length, the coefficient variation of the fibre diameter, and fibre of wethers fed on diets with FSF were higher than those without FSF (P < 0.05). The fibre diameter of the wethers fed on FSF supplemented diets was the same as those on 0 % FSF (P > 0.05). The wethers spent more time on FSF supplemented diets and consumed more feed compared to that without FSF supplemented (P < 0.05). The levels of FSF inclusion in the diet affected the enteric methane output (ppm-m), where 4 % FSF had the highest enteric methane output while wethers on 2 % FSF had the lowest methane output (P < 0.05). Resting wethers produced more methane (g/day) than those feeding or standing (P < 0.05). Increasing levels of FSF did not affect ruminal temperature and pH. Ammonia-N increased with increasing FSF except in wethers fed on a diet with 4% FSF (P < 0.01). The total molar concentrations of the wethers' volatile fatty acids decreased with increasing FSF levels (P > 0.05). The acetic propionic ratio of the wethers also decreased except at a 4% inclusion level. The in vitro true digestibility dry matter (IVTDDM), in vitro true digestibility neutral detergent fibre (IVTDNDF), and in vitro true digestibility acid detergent fibre (IVTDADF) of the wethers decreased up to 4% FSF inclusion but tended to increase at 6% inclusion. This study's result as one of the pioneer studies in Dohne-Marino wethers showed that FSF treatment has the potential to improve the nutritional status of the animal and the animal performance and wool quality. Health-wise, FSF decrease nematode population and boost animal immunity as seen in RBC and WBC counts. It also can play a major role in protecting the environment, as seen in its reduction in feacal and urinary nitrogen, which is heavily involved in environmental pollution. Result also confirmed that the best period to target for methane mitigation in ruminants is the resting period. In conclusion, the inclusion of FSF in the diet of Dohne-Merino wethers has the potential to improve the overall performance, with a 4% FSF inclusion level having optimal productivity. However, future research is required to investigate FSF's effect on meat quality, rumen microbial community, in-vivo digestibility, and milk production.]]> Wed 12 May 2021 13:48:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42004 Tue 07 May 2024 09:58:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39125 Tue 07 May 2024 09:58:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39055 Tue 07 May 2024 09:20:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39286 Thu 13 May 2021 16:25:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39061 Thu 13 May 2021 07:09:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39152 Thu 13 May 2021 05:52:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39150 Thu 13 May 2021 04:51:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39127 Thu 13 May 2021 04:41:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39266 Thu 13 May 2021 04:41:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43005 Thu 13 May 2021 02:51:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39268 Thu 13 May 2021 02:41:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39060 Thu 13 May 2021 01:40:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39261 Mon 06 May 2024 16:02:30 SAST ]]>