South African Journal of Animal Science最新文献_第6页

Changes in cardiac troponin I (cTnI), T (cTnT), and some biochemical parameters in Arabian racehorses after training 阿拉伯赛马训练后心肌肌钙蛋白I (cTnI)、T (cTnT)和一些生化参数的变化

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v53i1.01

C. Ayvazoğlu, Ş. Kızıltpe, Ü. Yaşar, Z. G. Yasar, P. Demir, A. Tunc

{"title":"Changes in cardiac troponin I (cTnI), T (cTnT), and some biochemical parameters in Arabian racehorses after training","authors":"C. Ayvazoğlu, Ş. Kızıltpe, Ü. Yaşar, Z. G. Yasar, P. Demir, A. Tunc","doi":"10.4314/sajas.v53i1.01","DOIUrl":"https://doi.org/10.4314/sajas.v53i1.01","url":null,"abstract":"The aim of this study was to compare the changes in the content of cTnI, cTnT and some biochemical parameters (CK–MB, LDH, AST, ALT) in Arabian racehorses before and after training. Diagnosis of myocardial disease in horses is very difficult due to the lack of specific cardiac signs. Cardiac diseases are seen as a cause of sudden death or decreased performance in horses. It has also been reported that excessive exercise may cause transient myocardial damage. In our study, 20 healthy stallion Arabian racehorses aged 4–10 y (6.00 ± 0.52 y) were used. Five millilitres of blood was collected from the V. jugularis of clinically healthy horses into serum tubes before and after training. Training time was determined as 30 min for each horse. Pre-training cTnI, cTnT, CK–MB, LDH, AST, and ALT contents were determined to be 0.130 ± 0.01 ng/mL, 0.007 ± 0.00 ng/mL, 231.15 ± 8.96 U/L, 692.45 ± 34.12 U/L, 309.92 ± 18.48 U/L, and 11.83 ± 0.92 U/L, respectively. After training, cTnI, cTnT, CK–MB, LDH, AST, and ALT contents were determined to be 0.169 ± 0.01 ng/mL, 0.008 ± 0.00 ng/mL, 289.80 ± 10.96 U/L, 704.25 ± 22.03 U/L, 328.47 ± 19.58 U/L, and 15.24 ± 1.03 U/L, respectively. As a result, it was determined that exercise triggered myocardial damage to some extent in Arabian horses. Exercise stimulates troponin release and the differences that may occur in troponin tests in horses after exercise should be taken into consideration.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"22 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78222330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Yeast cell wall supplementation modulates pre-weaning stress in male Nili Ravi buffalo calves 酵母细胞壁补充调节雄性尼利拉维水牛犊牛断奶前应激

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i4.06

M. Raza, M. Yousaf, M. Rashid, A. Maqsood, B. Azam, R. Mustafa, S. Ahmad, A. Khalid, M. Naseem, H. Rehman

{"title":"Yeast cell wall supplementation modulates pre-weaning stress in male Nili Ravi buffalo calves","authors":"M. Raza, M. Yousaf, M. Rashid, A. Maqsood, B. Azam, R. Mustafa, S. Ahmad, A. Khalid, M. Naseem, H. Rehman","doi":"10.4314/sajas.v52i4.06","DOIUrl":"https://doi.org/10.4314/sajas.v52i4.06","url":null,"abstract":"The effects of yeast cell wall (YCW) supplementation on growth performance, cell-mediated immune response, blood metabolites, and health scores in early-weaned male buffalo (Bubalus bubalis) calves were evaluated. Forty Nili Ravi buffalo calves were randomly divided into four groups and supplemented with four dietary treatments, namely control (animals without prebiotics), YCW-2 (yeast cell wall fed at 2 g/calf/day), YCW-4 (yeast cell wall fed at 4 g/calf/day), and cMOS-4 (commercial mannan-oligosaccharide fed at 4 g/calf/day). Milk intake, dry matter intake (DMI), and health scores were recorded daily, whereas body weight (body weight) and structural developments (hip height, wither height, heart girth, and body length) were recorded weekly. Feed efficiency and average daily gain (ADG) were calculated at the end of the experiment. Blood samples were collected fortnightly to determine glucose, non-esterified fatty acids, beta-hydroxybutyric acid (βHBA), blood urea nitrogen (BUN), catalase, malondialdehyde, creatinine, hepatic enzymes, cholesterol, triglycerides, and total serum protein profile. The cell-mediated immune response was determined by the application of dinitrochlorobenzene directly to the skin. The results of the study revealed that supplementation of YCW and cMOS increased DMI, body weight, feed efficiency, ADG, and structural growth in buffalo calves, whereas faecal scores were significantly improved in supplemented groups compared to the control. Glucose, BUN, and βHBA improved in supplemented animals more than in the control group, indicating bioactivity that contributed to the improvement of gut health. Supplementation with YCW improved the growth performance, physiological responses, and gut health of early-weaned male buffalo calves.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"80 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83946146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of production stage and fertility traits on milk production of pasture-grazed Holstein and Jersey cows in a Mediterranean-type climate region 地中海型气候区放牧荷斯坦奶牛和泽西奶牛产奶量的产期和育性性状影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i4.15

N. Bangani, C. Muller, K. Dzama, C. Cruywagen, V. Imbayarwo-Chikosi

{"title":"Effects of production stage and fertility traits on milk production of pasture-grazed Holstein and Jersey cows in a Mediterranean-type climate region","authors":"N. Bangani, C. Muller, K. Dzama, C. Cruywagen, V. Imbayarwo-Chikosi","doi":"10.4314/sajas.v52i4.15","DOIUrl":"https://doi.org/10.4314/sajas.v52i4.15","url":null,"abstract":"The aim of this study was to compare the milk production of Holstein and Jersey cows on pasture as affected by parity, lactation stage, calving season, age at first calving, and calving interval. Test-day lactation records of 122 Holstein and 99 Jersey cows, varying from parities 1 to 6, were collected using standard milk recording procedures. Cows were managed and kept as one herd on kikuyu over-sown with ryegrass pasture and received 7 kg of concentrate (as fed) containing 170 g/kg crude protein per day. Across parities, the means for milk yield, milk fat, milk protein, dry matter intake, and body weight were 23.8 ± 6.2 and 17.9 ± 4.4 kg/day; 3.89 ± 0.03 and 4.66 ± 0.03%; 3.17 ± 0.02 and 3.59 ± 0.02%; 17.8 ± 2.6 and 14.4 ± 2.1 kg/day; and 567 ± 3.49 and 411 ± 3.84 kg for Holstein and Jersey cows, respectively. Milk yield increased by 26.5% in Holsteins and 23.7% in Jerseys from first to fourth lactation. Mean lactation number was 2.5 ± 0.15 and 3.0 ± 0.17; test-day milk yield for summer was 21.2 ± 0.28 and 16.5 ± 0.31 kg/day; and winter was 21.3 ± 0.28 and 16.4 ± 0.32 kg/day; age at first calving was 26.4 ± 0.3 and 26.2 ± 0.3; and inter-calving period was 13.9 ± 0.18 and 13.2 ± 0.17 months, for Holstein and Jersey cows, respectively. With inter-calving periods of 13 months, 13.1 to 15.0 and above 15 months, the 305-day Holstein cow milk yield was 7324 ± 181, 7768 ± 193, and 7927 ± 211 kg, whereas that of Jerseys was 5400 ± 135, 5621 ± 244, and 5724 ± 234 kg, respectively. In this study, Jerseys performed better than Holsteins in lactation number and calving interval. Holsteins, however, had a higher increase in milk yield from first to fourth lactation, whereas age at first calving did not differ.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81885704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of different additions to Italian ryegrass (Lolium multiflorum Lam.) on silage quality 不同添加量对意大利黑麦草青贮品质的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i6.03

E. Gürsoy, K. Adem, G. Sezmiş, K. Ali

{"title":"Effects of different additions to Italian ryegrass (Lolium multiflorum Lam.) on silage quality","authors":"E. Gürsoy, K. Adem, G. Sezmiş, K. Ali","doi":"10.4314/sajas.v52i6.03","DOIUrl":"https://doi.org/10.4314/sajas.v52i6.03","url":null,"abstract":"This research was carried out to determine the effects of different additions (urea and molasses) used with Italian ryegrass (Lolium multiflorum L.) silage on fermentation, in vitro gas production, microbiological properties, in vitro digestibility parameters, and relative fodder quality (RFQ) in silages made under laboratory conditions. The Italian grass (Lolium multiflorum L.) used in the study was chopped to an approximate size of 2–3.0 cm. Amounts of 0, 2, and 4% molasses and 0, 0.5, and 1% urea were added to the fresh material as a percentage of dry matter. Because of the urea, crude protein (CP) of Italian ryegrass silage increased, but the content of neutral detergent fibre (NDF), acid detergent fibre (ADF), and acid detergent lignin (ADL) decreased. While the addition of urea decreased the acetic acid and butyric acid concentrations of the silage, it increased the pH, lactic acid, and ammonia (NH3) content. Molasses addition increased in vitro gas production and organic matter digestibility (OMD); urea increased metabolic energy (ME) and the net energy lactation (NEL) values of silages. Urea and molasses both increased in vitro digestibility parameters, microbial protein production and synthesis, and relative fodder quality of the silage. As a result of the research, it was determined that urea and molasses could be used at contents of 1.5% and 4%, respectively, in Italian ryegrass silage.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"10 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80880801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of extrusion with molasses on the rumen undegradable protein fraction of canola oilcake meal and sweet lupins 糖蜜挤压对菜籽油饼粕和甜羽扇豆瘤胃不可降解蛋白质组分的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i6.05

T. S. Brand, L. Jordaan, O. Dreyer

{"title":"Effect of extrusion with molasses on the rumen undegradable protein fraction of canola oilcake meal and sweet lupins","authors":"T. S. Brand, L. Jordaan, O. Dreyer","doi":"10.4314/sajas.v52i6.05","DOIUrl":"https://doi.org/10.4314/sajas.v52i6.05","url":null,"abstract":"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, with the addition of 6% molasses, were extruded at a maximum temperature of 116 °C. A total of six Dohne Merino wethers (± 80 kg), fitted with rumen cannula, were used in this trial. Samples in polyester bags (5 g) were incubated in the rumen of the sheep at intervals of 0, 2, 4, 8, 16, 24, and 48 h. The DM and CP disappearances from the rumen were determined and degradability parameters were estimated. Extrusion increased the potentially degradable CP fraction by 43.5%. At each outflow rate, the average CP effective degradability of COM (68.2%) was lower than that of CSL (78.0%). Extrusion substantially lowered the CP effective degradability for both protein sources at every outflow rate tested. The biggest effect was seen at 0.08/h, where effective degradation was lowered by 25.6%. Extrusion with molasses was found to modify ruminal degradation parameters of both canola oilcake meal and crushed sweet lupins, while also decreasing the effective rumen degradation, especially at faster outflow rates. Thereby, the rumen undegradable protein fraction was increased by 85.4%. This study shows that COM and CSL extruded with 6% molasses can substantially increase RUP. ","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"53 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77287941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of mulberry leaves on growth performance, carcass characteristics, and meat quality of Japanese quail 桑叶对日本鹌鹑生长性能、胴体特性和肉品质的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v53i1.09

A. Ustundag, M. Ozdogan

引用次数: 0

Effects of biomacromolecules on growth, digestibility, digestive enzyme activity, antioxidation, and immunity in broilers 生物大分子对肉鸡生长、消化率、消化酶活性、抗氧化和免疫力的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i4.14

R. Wang, Y. Wang, X. An, X. Ji, J. Du, Y. Hu, T. Guo, J. Zhang, A. Gao, J. Qi

{"title":"Effects of biomacromolecules on growth, digestibility, digestive enzyme activity, antioxidation, and immunity in broilers","authors":"R. Wang, Y. Wang, X. An, X. Ji, J. Du, Y. Hu, T. Guo, J. Zhang, A. Gao, J. Qi","doi":"10.4314/sajas.v52i4.14","DOIUrl":"https://doi.org/10.4314/sajas.v52i4.14","url":null,"abstract":"This study aimed to evaluate the effects of two biomacromolecules, fermented wheat bran polysaccharides (FWBPs) and sodium humate (SH), on growth performance, nutrient digestibility, digestive enzyme activity, antioxidant status, and immunity of broilers. A total of 144 male, one-day-old Arbor Acres broilers were randomly divided into three dietary groups: control (CON), 0.4% FWBPs, and 0.1% SH, with six replicates of eight birds. The FWBPs and SH groups had a greater body weight (BW) at 21 and 42 d, average daily weight gain (ADG) in the starter period, average daily feed intake (ADFI) in the overall period, and feed-to-gain ratio (F:G) in the grower period. However, the ADFI was decreased by FWBPs supplementation and increased by SH supplementation in the grower period. The dry matter (DM) and organic matter (OM) digestibility were higher in the SH group at 21 d. At 21 d, the FWBPs group had an increased duodenal trypsin and serum glutathione peroxidase (GSH-Px) activity and immunoglobulin M (IgM) concentration, and a decreased liver malondialdehyde (MDA) concentration. The SH group had increased duodenal lipase activity, serum IgM, and interleukin-2 concentrations but decreased liver MDA concentrations. At 42 d, FWBPs and SH supplementation decreased duodenal trypsin and chymotrypsin and serum superoxide dismutase activity. Jejunum chymotrypsin activity and liver MDA content were decreased in the SH group. In conclusion, dietary FWBPs or SH supplementation during the starter period can improve growth performance and nutrient digestibility and enhance antioxidant capacity and immunity of broilers.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"14 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74263062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating heat stress in broiler chickens using dietary onion (Allium cepa) and ginger (Zingiber officinale) supplementation 饲粮中添加葱(Allium cepa)和姜(Zingiber officinale)减轻肉仔鸡热应激

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v52i6.07

M. Shah, N. Chand, R. Khan, M. Saeed, M. Ragni, S. Tarricone, V. Laudadio, C. Losacco, V. Tufarelli

{"title":"Mitigating heat stress in broiler chickens using dietary onion (Allium cepa) and ginger (Zingiber officinale) supplementation","authors":"M. Shah, N. Chand, R. Khan, M. Saeed, M. Ragni, S. Tarricone, V. Laudadio, C. Losacco, V. Tufarelli","doi":"10.4314/sajas.v52i6.07","DOIUrl":"https://doi.org/10.4314/sajas.v52i6.07","url":null,"abstract":"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 broiler chicks were weighed and assigned to five treatments and five replicates. Broilers were maintained in a thermoneutral (TN) environment or were exposed to heat stress (HS). For 35 days, HS birds were fed a control diet and three levels of onion and ginger powder as: 5 g/kg ginger + 1.5 g/kg onion (T1), 10 g/kg ginger + 2.5 g/kg onion (T2), and 15 g/kg ginger + 3.5 g/kg onion (T3). Body weight, feed conversion ratio (FCR), dressing percentage, and the weight of immune-related organs improved in T2 compared to the control. Blood concentrations of malondialdehyde (MDA) and paraoxonase-1 (PON1) were substantially higher in T2 than the control. Similarly, in the same dietary group, the antibody titre against Newcastle disease (ND) and total leucocyte count (TLC) were greater than the control diet. The findings of this research indicate that 10 g of ginger combined with 2.5 g of onion in the diet enhance broiler growth performance, carcass quality, antioxidant status, and immunological response under heat stress conditions. ","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"42 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85967055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Serological and haemato-biochemical insights into bovine leukosis in dairy cattle in D.I. Khan, Pakistan 血清学和血液生化洞察牛白血病在D.I.汗，巴基斯坦

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v53i1.05

Habib Ullah, A. Nasir, M. Kashif, M. Sajid, A. Sikandar, M. Farooq, A. Rahman, F. Ullah

{"title":"Serological and haemato-biochemical insights into bovine leukosis in dairy cattle in D.I. Khan, Pakistan","authors":"Habib Ullah, A. Nasir, M. Kashif, M. Sajid, A. Sikandar, M. Farooq, A. Rahman, F. Ullah","doi":"10.4314/sajas.v53i1.05","DOIUrl":"https://doi.org/10.4314/sajas.v53i1.05","url":null,"abstract":"Bovine leukosis is an economically important disease of dairy cattle caused by the bovine leukaemia virus (BLV). The study aimed to determine the seroprevalence, haemato-biochemical effects, and risk factors pertinent to the prevalence of bovine leukosis in Holstein–Friesian purebred dairy cattle in the D.I. Khan region of Pakistan. A total of 192 sera were assayed using an enzyme-linked immunosorbent assay. Overall, 31.3% (60/192) cattle were detected as seropositive. There was a marked increase in total leukocyte count (11.29 ± 0.48×103/μl), lymphocytes (5.73 ± 0.42%), monocytes (0.81 ± 0.06%), haemoglobin (11.09 ± 0.46 g/dl), red blood cells (7.23 ± 0.37 ×106/μl), and packed cell volume (31.75 ± 1.48%) in seropositive cattle. Serum biochemical parameters in seropositive cattle showed a marked increase in the liver enzymes, alanine transaminase (24.25 ± 1.03 U/l) and aspartate aminotransferase (49.33 ± 3.31 U/l), with a marked decrease in glutathione peroxidase (1365.63 ± 12.03 (U/l) and superoxide dismutase (2.14 ± 0.13 U/ml) activity. A significant association of age, pregnancy, breeding method, milk yield, and health status of seropositive animals with bovine leukosis was also recorded. The prevalence was higher in animals which were older, pregnant, artificially inseminated, low milk producers, and had a history of ailments. The current study found that bovine leukosis virus could cause changes in internal homeostasis, oxidative stress, and liver dysfunction, all of which should be considered during a control regimen. It was concluded that bovine leukosis was moderately prevalent in the D.I. Khan region in Pakistan.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"23 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78811351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Synthesis and antibacterial activity of a ZnO-fibre complex zno -纤维配合物的合成及其抗菌活性

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2023-04-17 DOI: 10.4314/sajas.v53i1.07

Fawn Dai, Tao Lin, Xia Huang, Mujia Shi, Feichuan Zhao, Yaojun Yang, Xiang Nong

{"title":"Synthesis and antibacterial activity of a ZnO-fibre complex","authors":"Fawn Dai, Tao Lin, Xia Huang, Mujia Shi, Feichuan Zhao, Yaojun Yang, Xiang Nong","doi":"10.4314/sajas.v53i1.07","DOIUrl":"https://doi.org/10.4314/sajas.v53i1.07","url":null,"abstract":"In this experiment, a ZnO-fibre complex was prepared using the hydrothermal methods of \"water solubility,\" \"coupling agent,\" and \"high temperature and high pressure\". Binding rate, antibacterial activity, microstructure, and the infrared spectrum were measured using biomimetic digestion, bacterial proliferation tests, and ultra-fine electron microscopes. At first, ZnO-fibre complexes were prepared with different ratios of material and water. They was divided into five groups with ratios of 1:0, 1:4, 1:6, 1:8, and 1:10, respectively. The ZnO-fibre complexes were prepared with different coupling agents on the basis of experiment 1. They were divided into four groups. The ratio for material and water in the control group was 1:0, and in the treatment group, was 1:4. Treatment groups 2 and 3 had 10% guar gum or 10% bamboo fibre polymer composites (BFP) added on the basis of group 1. A ZnO-fibre complex was successfully prepared by adding 10% BFP at a ratio of material:water of 1:4, at a high temperature of 120 °C and a high pressure of 0.3 MPa for 20 min. The ZnO-binding rate reached 99.05%. The zinc oxide may bind to the carbonyl group of bamboo powder and adhere to the surface of and gaps in the bamboo fibre. The growth inhibition rate of Escherichia coli, Salmonella, and Staphylococcus aureus was double that of the common ZnO additive and Zn concentration. It is expected to be used as a slow-release ZnO additive.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":"76 7","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72450765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0