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Traditional farmers' pig trait preferences and awareness levels toward reproductive biotechnology application in Zambia Full text
2022
Rubaijaniza Abigaba | Pharaoh Collins Sianangama | Progress H. Nyanga | Wilson N. M. Mwenya | Edwell S. Mwaanga
Traditional farmers' pig trait preferences and awareness levels toward reproductive biotechnology application in Zambia Full text
2022
Rubaijaniza Abigaba | Pharaoh Collins Sianangama | Progress H. Nyanga | Wilson N. M. Mwenya | Edwell S. Mwaanga
Objective: This study assessed traditional farmers' preferences for indigenous pigs and their awareness levels toward reproductive biotechnology. Materials and Methods: This cross-sectional, descriptive study employed a mixed-methods con¬current triangulation design with a pragmatic approach. For quantitative data collection, a ran¬domly selected sample size of 622 respondents was interviewed using a structured questionnaire. A semi-structured interview guide was used in seven focus group discussions (FGDs) for qualitative data. For quantitative data, descriptive statistics were used to find out how often something happened, and chi-square tests were used to look for relationships. For qualitative data, thematic analysis was used. Results: The majority (66.9%) of respondents were female, and they had largely (64.8%) attended a primary level of education. A slight majority (43.1%) of the respondents were 30–45 years old. Most respondents (65.1%) were low-income earners (below K500). Incidentally, the majority (74.1%) of respondents had low awareness of reproductive biotechnologies. Respondents' aware¬ness levels were associated with gender (p < 0.001), education (p < 0.001), income (p < 0.01), and not age (p > 0.05). With regard to trait preference, a total of seven indigenous pig traits were reportedly preferred, of which disease resistance (25.9%) and litter size (23.8%) were the most preferred. From FGDs, participants valued indigenous pigs, citing many preferred traits, of which disease resistance and litter size were the most emphasized traits. Some participants were aware of many reproductive biotechnologies and their perceived advantages. However, they were more familiar with artificial insemination, heat detection methods, and synchronization. Conclusions: The majority of respondents had low awareness of reproductive biotechnologies. Respondents' awareness was associated with sociodemographic characteristics. The identified indigenous pig traits preferred by traditional farmers included adaptive and productive traits. [J Adv Vet Anim Res 2022; 9(2.000): 255-266]
Show more [+] Less [-]Traditional farmers' pig trait preferences and awareness levels toward reproductive biotechnology application in Zambia Full text
2022
Rubaijaniza Abigaba (Department of Animal Science, University of Zambia, Lusaka, Zambia) | Pharaoh Collins Sianangama (Department of Animal Science, University of Zambia, Lusaka, Zambia) | Progress H. Nyanga (Department of Geography and Environmental Studies, University of Zambia, Lusaka, Zambia) | Wilson N. M. Mwenya (Department of Animal Science, University of Zambia, Lusaka, Zambia) | Edwell S. Mwaanga (Department of Biomedical Sciences, University of Zambia, Lusaka, Zambia.)
Objective: This study assessed traditional farmers' preferences for indigenous pigs and their awareness levels toward reproductive biotechnology. Materials and Methods: This cross-sectional, descriptive study employed a mixed-methods con¬current triangulation design with a pragmatic approach. For quantitative data collection, a ran¬domly selected sample size of 622 respondents was interviewed using a structured questionnaire. A semi-structured interview guide was used in seven focus group discussions (FGDs) for qualitative data. For quantitative data, descriptive statistics were used to find out how often something happened, and chi-square tests were used to look for relationships. For qualitative data, thematic analysis was used. Results: The majority (66.9%) of respondents were female, and they had largely (64.8%) attended a primary level of education. A slight majority (43.1%) of the respondents were 30–45 years old. Most respondents (65.1%) were low-income earners (below K500). Incidentally, the majority (74.1%) of respondents had low awareness of reproductive biotechnologies. Respondents' aware¬ness levels were associated with gender (p < 0.001), education (p < 0.001), income (p < 0.01), and not age (p > 0.05). With regard to trait preference, a total of seven indigenous pig traits were reportedly preferred, of which disease resistance (25.9%) and litter size (23.8%) were the most preferred. From FGDs, participants valued indigenous pigs, citing many preferred traits, of which disease resistance and litter size were the most emphasized traits. Some participants were aware of many reproductive biotechnologies and their perceived advantages. However, they were more familiar with artificial insemination, heat detection methods, and synchronization. Conclusions: The majority of respondents had low awareness of reproductive biotechnologies. Respondents' awareness was associated with sociodemographic characteristics. The identified indigenous pig traits preferred by traditional farmers included adaptive and productive traits. [J Adv Vet Anim Res 2022; 9(2.000): 255-266]
Show more [+] Less [-]Evaluation of inhibitor activity of bacterial sialidase from Clostridium perfringens against Newcastle disease virus in the cell culture model using chicken embryo fibroblast Full text
2022
Ryan Septa Kurnia | Rahajeng Setiawaty | Ketut Karuni Nyanakumari Natih | Christian Marco Hadi Nugroho | Otto Sahat Martua Silaen | Silvia Tri Widyaningtyas | Simson Tarigan | Fera Ibrahim | Pratiwi Pudjilestari Sudarmono
Evaluation of inhibitor activity of bacterial sialidase from Clostridium perfringens against Newcastle disease virus in the cell culture model using chicken embryo fibroblast Full text
2022
Ryan Septa Kurnia | Rahajeng Setiawaty | Ketut Karuni Nyanakumari Natih | Christian Marco Hadi Nugroho | Otto Sahat Martua Silaen | Silvia Tri Widyaningtyas | Simson Tarigan | Fera Ibrahim | Pratiwi Pudjilestari Sudarmono
Objective: The Newcastle disease virus (NDV) is an infectious disease that causes very high eco¬nomic losses due to decreased livestock production and poultry deaths. The vaccine's ineffec¬tiveness due to mutation of the genetic structure of the virus impacts obstacles in controlling the disease, especially in some endemic areas. This study aimed to provide an alternative treatment for NDV infection by observing the viral replication inhibitor activity of Clostridium perfringens sialidase in primary chicken embryo fibroblast (CEF) cells. Materials and Methods: The virus was adapted in CEF monolayer cells, then collected thrice using the freeze–thaw method and stored at −20°C for the next step in the challenge procedure. C. perfringens crude sialidase was obtained, but it was further purified via stepwise elution in ion exchange using Q Sepharose® Fast Flow and affinity chromatography with oxamic acid agarose. The purified sialidase was tested for its toxicity, ability to breakdown sialic acid, stopping viral replication, and how treated cells expressed their genes. Results: According to this study, purified C. perfringens sialidase at dosages of 187.5, 93.75, and 46.87 mU effectively hydrolyzes CEF cells' sialic acid and significantly inhibits viral replication on the treated cells. However, sialidase dosages of 375 and 750 mU affected the viability of mono¬layer CEF cells. Interestingly, downregulation of toll-like receptor (TLR)3 and TLR7 (p < 0.05) in the sialidase-treated group indicates viral endocytosis failure. Conclusions: By stopping endocytosis and viral replication in host cells, sialidase from C. perfrin¬gens can be used as an alternative preventive treatment for NDV infection. [J Adv Vet Anim Res 2022; 9(2.000): 335-345]
Show more [+] Less [-]Evaluation of inhibitor activity of bacterial sialidase from Clostridium perfringens against Newcastle disease virus in the cell culture model using chicken embryo fibroblast Full text
2022
Ryan Septa Kurnia (Doctoral Program in Biomedical Science, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia) | Rahajeng Setiawaty (National Veterinary Drug Assay Laboratory (NVDAL), Raya Pembangunan Gunung Sindur, Bogor, Indonesia) | Ketut Karuni Nyanakumari Natih (National Veterinary Drug Assay Laboratory (NVDAL), Raya Pembangunan Gunung Sindur, Bogor, Indonesia) | Christian Marco Hadi Nugroho (Doctoral Program in Biomedical Science, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia) | Otto Sahat Martua Silaen (Animal Health Diagnostic Unit, PT. Medika Satwa Laboratoris Kp. Kayumanis, Bogor, Indonesia) | Silvia Tri Widyaningtyas (Institute of Human Virology and Cancer Biology Universitas Indonesia, Jakarta, Indonesia) | Simson Tarigan (Indonesian Research Centre for Veterinary Science, Bogor, Indonesia) | Fera Ibrahim (Department of Clinical Microbiology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia) | Pratiwi Pudjilestari Sudarmono (Department of Clinical Microbiology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.)
Objective: The Newcastle disease virus (NDV) is an infectious disease that causes very high eco¬nomic losses due to decreased livestock production and poultry deaths. The vaccine's ineffec¬tiveness due to mutation of the genetic structure of the virus impacts obstacles in controlling the disease, especially in some endemic areas. This study aimed to provide an alternative treatment for NDV infection by observing the viral replication inhibitor activity of Clostridium perfringens sialidase in primary chicken embryo fibroblast (CEF) cells. Materials and Methods: The virus was adapted in CEF monolayer cells, then collected thrice using the freeze–thaw method and stored at −20°C for the next step in the challenge procedure. C. perfringens crude sialidase was obtained, but it was further purified via stepwise elution in ion exchange using Q Sepharose® Fast Flow and affinity chromatography with oxamic acid agarose. The purified sialidase was tested for its toxicity, ability to breakdown sialic acid, stopping viral replication, and how treated cells expressed their genes. Results: According to this study, purified C. perfringens sialidase at dosages of 187.5, 93.75, and 46.87 mU effectively hydrolyzes CEF cells' sialic acid and significantly inhibits viral replication on the treated cells. However, sialidase dosages of 375 and 750 mU affected the viability of mono¬layer CEF cells. Interestingly, downregulation of toll-like receptor (TLR)3 and TLR7 (p < 0.05) in the sialidase-treated group indicates viral endocytosis failure. Conclusions: By stopping endocytosis and viral replication in host cells, sialidase from C. perfrin¬gens can be used as an alternative preventive treatment for NDV infection. [J Adv Vet Anim Res 2022; 9(2.000): 335-345]
Show more [+] Less [-]Food handling in the domestic environment: an online questionnaire study with respondents from 24 of 26 Brazilian states Full text
2022
Aryele Nunes da Cruz Encide Sampaio | Vanessa Mendonça Soares | Leonardo Ereno Tadielo | Emanoelli Aparecida Rodrigues dos Santos | Camila Koutsodontis Cerqueira-Cézar | Giovanni Costa Danelon | Luciano dos Santos Bersot | Juliano Gonçalves Pereira
Using an online questionnaire, this study evaluated the profile of a Brazilian population’s food handling practices in the home environment. The questionnaire, containing questions about domestic behavior in terms of hygiene and food handling, was built and available through social media sites. Information about the participants’ profiles, their food prepreparation, food preparation, and food post-preparation practices, and the occurrence of foodborne diseases (FBDs) was included in the questionnaire. A total of 701 responses were obtained. The interviewees included 78.31% female participants and 21.68% male participants, with an average age of 31.2 years. Nearly all (94.3%) had a complete or incomplete higher education. In the pre preparation stage, the participants evaluated the shelf life (97.28%) and storage temperature (44.79%) of the products while purchasing them. Regarding food handling practices, only a few participants washed the food packages before storing them (31.95%) or removed hand jewelry or other adornments when washing food (61.48%). Most participants washed their hands (91.58%) and washed vegetables (99.28%). But a group of interviewees reported washing raw meat (27.81%) before preparing it. Cutting surfaces such as plastic (50.36%) and glass (49.36%) tops were the most prevalent in the study. Most respondents did not know how long they had been using their cutting boards (67.62%) and mentioned using the same surface to handle both raw and ready-to-eat products (84.17%). As for the preparation, most interviewees declared they did not check the food temperature during preparation (86.31%), ignoring the ideal cooking temperature (88.26%). Regarding the occurrence of FBDs, 79.17% of the interviewees reported having suspicious clinical signs associated with contaminated foods and 65.59% did not seek medical help. Thus, the participants demonstrated ignorance about adequate practices for food safety in the home environment, highlighting the need to conduct health education programs within the Brazilian population.
Show more [+] Less [-]Fermentation profile, aerobic stability, chemical and mineral composition of silages of mango combined with cocoa pod husk meal Full text
2022
Gherman Garcia Leal de Araújo | Cleyton de Almeid a Araújo | Glayciane Costa Gois | André Luiz Rodrigues Magalhães | Judicael Janderson da Silva Novaes | Jéssica Maria da Conceição da Silva Rodrigues | Yuri Santa Rosa Guimarães | Alexandre Fernandes Perazzo | Thieres George Freire da Silva | Edson Mauro dos Santos | Fleming Sena Campos
The objective was to evaluate the fermentation profile, aerobic stability, chemical composition, and mineral content of silages of mango combined with cocoa pod husk meal. A completely randomized design was adopted, including four levels (65, 70, 75, and 80%) and five repetitions, totaling 20 experimental silos that were opened after 90 days of sealing. Increasing mango levels in the silages increased the dry matter recovery, total carbohydrates, and fraction B2 of carbohydrates, and reduced gas losses, dry matter, and mineral matter. The quadratic effect was found for pH, buffering capacity, potassium, boron, iron, and nitrogen fractions A and B1 + B2. Using unconventional products such as mango combined with cocoa pod husk meal for silage making can reduce the cost of food supplementation for ruminants, and the environmental contamination.
Show more [+] Less [-]Genetic parameters and trends of growth traits in Nelore cattle raised in the Northern region of Brazil Full text
2022
Mariana Rocha Rodrigues | Rafael Espigolan | José Bento Sterman Ferraz | Fernando Oliveira Bussiman | Ricardo Toniolli | Raysildo Barbosa Lôbo | Helcileia Dias Santos | Leandro Lopes Nepomuceno | Jorge Luís Ferreira
The objective of this study was to estimate (co)variances and genetic parameters and to predict genetic trends for weight at 120 (W120), 210 (W210), 365 (W365), and 450 (W450) days of age in Nelore cattle raised in the northern region of Brazil. The database comprised records of 30,387 animals born between 2000 and 2013 in the Brazilian North. Estimates were calculated by the Restricted Maximum Likelihood (REML) method, in single- and multi-trait analyses in an animal model. Heritability as obtained using single- and multi-trait models for W120 (0.22 and 0.31), W210 (0.20 and 0.34), W365 (0.51 and 0.51), and W450 (0.49 and 0.51) indicated moderate to high magnitudes, with the possibility of genetic selection and incorporation into the herd. Genetic correlations between growth traits were favorable, ranging from 0.78 to 0.96. Genetic trends for W120 and W210 varied largely, from -0.31 to 4.68 and -0.53 to 7.62 kg/year, respectively. Smaller fluctuations were observed in genetic trends for W365 and W450, which ranged from -1.08 to 10.90 and -1.29 to 12.51 kg/year, respectively. Selection for W365 and W450 proved to be the criterion of choice for Nelore herds raised in the region; however, it may compromise adult performance because of higher costs and time for production. A thorough analysis of mattings is recommended to allow the selection of earlier-developing animals.
Show more [+] Less [-]Productive and reproductive performance of crossbred dairy heifers with induced lactation and efficacy of antimicrobial therapy associated with internal teat sealants Full text
2022
Camylla Pedrosa Monteiro | Rodolfo Mingoti | Bruna Gomes Alves | Melina Melo Barcelos | Gustavo Freu | Cristian Marlon de Magalhães Rodrigues Martins | Pietro Sampaio Baruselli | Marcos Veiga dos Santos
This study evaluated (a) the efficacy of an association between injectable antibiotic therapy and sealant (ATBS) on milk yield (MY), somatic cell count (SCC), and prevalence of intramammary infections (IMI); and (b) the efficacy of gonadotropin-releasing hormone (GnRH) on follicular cyst (FCs) resolution (cyclicity at the 45th day in milk; DIM) and cumulative pregnancy rate (CPR) in heifers submitted to a lactation induction protocol (LIP). A total of 114 crossbred (Holstein × Jersey) heifers, with 34.7 ± 4.8 months and 439 ± 56.35 kg were submitted to LIP. On the 5th day of the LIP, the heifers were assigned to (i) ATBS (n = 57) with 7 mg/kg of norfloxacin associated with sealant and (ii) Control 1 (n = 57; CONT1) with no treatments. Lactation began on the 21st day of LIP and the 15th DIM, FCs were diagnosed and 106 heifers were randomized into two treatment groups with 53 heifers each: (i) GnRH (5 mL injectable GnRH) and (ii) Control 2 (CONT2; no treatment). Of the 114 heifers initially induced, 83.33% (n = 95) responded to LIP with an average MY of 15.19 kg/milk/day during 22 weeks of lactation. In the first 14 DIM, the IMI prevalence was 18% and 28% for heifers ATBS and CONT1 treated, respectively. Additionally, coagulase-negative Staphylococcus was the most frequently isolated group of pathogens. Mammary quarters that received ATBS treatment had a lower risk of IMI and SCC than CONT1. The cyclicity at 45 DIM was 68% (ATBS) and 35% (CONT1), and 57% and 46% for animals in the GnRH and CONT2. CPR was 60% in the ATBS group and 89% in CONT1, but GnRH treatment did not affect the CPR. In conclusion, LIP was effective in stimulating MY in heifers, and the IMI prevalence decreased with ATBS treatment. Also, the use of GnRH did not affect the FC regression, cyclicity at 45 DIM, and CPR.
Show more [+] Less [-]Perinatal exposure to an aromatase inhibitor glyphosate-base herbicide reduced male and female social behavior in juvenile age and the sexual behavior at adult female rat Full text
2022
Esther Lopes Ricci | Miriam Oliveira Ribeiro | André Rinaldi Fukushima | Thaisa Meira Sandini | Paulo Ricardo Dell’Armelina Rocha | Paula Andrea Faria Waziry Waziry | Maria Martha Bernardi | Helenice de Souza Spinosa
Objectives: The herbicide glyphosate, a pesticide used in agriculture to control weeds, both in food crops and in other agricultural areas, has been identified as an endocrine modulator through the inhibition of aromatase activity and the activation of estrogen receptors. The present study examined the effects of a glyphosate-based herbicide (Roundup® (GLY-BH) on sexual dimorphism of rats after perinatal exposure to low and high GLY-BH in males and females offspring. Methods: Two groups of pregnant rats were treated with two doses of GLY-BH (50 or 150 mg/kg) from day 15 of gestation (GD15) to postnatal day 7 (PND7). Play fighting behavior was observed at the juvenile stage and during social and sexual behaviors in adulthood. Results: Perinatal GLY BH exposure reduced male and female body weight at 28, 75, and 90 days of age. The play fighting behavior was decreased in both sexes, but female rats were more affected. The sexual behaviors were reduced only in females. Conclusions: Perinatal exposure to both doses of GLY-BH promoted sexually dimorphic effects in both juvenile and adulthood stages. These effects were attributed to the inhibition of aromatase activity induced by exposure to GLY-BH in the perinatal period.
Show more [+] Less [-]Comparative study between S-(+)-ketamine–midazolam and fentanyl–droperidol in black-tufted marmosets (Callithrix penicillata) Full text
2022
Luiz Fernando Larangeira Lopes | Vanessa Nadine Gris | Mario Antonio Ferraro | Silvia Renata Gaido Cortopassi
Sedative and antinociceptive effects of two anesthetic protocols in black-tufted marmosets were compared in this study. Twenty-six marmosets underwent chemical immobilization for physical examination, blood sampling, tattooing, and microchipping. Animals were randomly treated with S-(+)-ketamine (10 mg/kg) and midazolam (1 mg/kg) (KM) or fentanyl (12.5 µg/kg) and droperidol (625 µg/kg) (FD) given by intramuscular injection. Heart and respiratory rates were recorded. Sedation, antinociception, muscle relaxation, posture, auditory, and visual responses were evaluated using a scoring system. Sedation in KM was achieved faster (p < 0.001) and lasted for a shorter period of time (p = 0.0009). KM was similar to FD in its cardiorespiratory effects, auditory and visual responses. Both protocols promoted adequate sedation to allow manipulation. Animals in KM assumed lateral recumbency while animals in FD maintained a quadrupedal posture during evaluation. FD produced less intense sedation and muscle relaxation but a higher degree of antinociception compared to KM and is suitable for procedures that require analgesia in black-tufted marmosets.
Show more [+] Less [-]The Level of Community Compliance Towards Prevention Efforts of COVID-19 in West Tanjung Jabung Regency, Jambi Full text
2022
Zulfitri Zulfitri | Safrizal Rahman | Misbahul Badri | Baidillah Zulkifli
The COVID-19 cases in Tanjung Jabung Barat Regency, Jambi, have has risen significantly daily. This significant increase in cases illustrates that the people are less than optimal in complying with the health protocols established by the government. This phenomenon concluded that public compliance in efforts to prevent COVID-19 has a vital role in preventing the spread. This study aims to describe the level of compliance towards prevention efforts of COVID-19 in the community. We use a descriptive survey method with probability sampling techniques to obtain the data. The subjects in this study were the community of Tanjung Jabung Barat, Jambi Regency, who were17 years old with a sample size of 400 samples. Collecting data using a questionnaire in a validated form and distributed to the public via social media. The data analysis in this study is the frequency distribution analysis (univariate analysis). The results of this study shown were that 172 respondents (43.0%) had a good level of compliance, 146 respondents (36.5%) had a sufficient level of adherence, and as many as 82 respondents (20.5%) had a good level of compliance to prevent COVID-19 spreads.
Show more [+] Less [-]Factors Associated with Amoebic Dysentery in Captive Non-Human Primates of The Mefou Primate Sanctuary Full text
2022
Gery Wamba | Clarisse Njua-Yafi | Jeannette Tombi
Primates are known to harbour different gastrointestinal parasite species that affect their survival and reproductive activity. Entamoeba histolytica infects humans predominantly as well as non-human (NH) primates causing amoebiasis. Amoebic dysentery is common amongst non-human primates in captive sites. The purpose of the study was to evaluate the risk factors associated with the prevalence of amoebic dysentery in captive NH primates of the Mefou Primate Sanctuary (MPS) in Cameroon. The faecal samples of 277 NH primates were analysed by qualitative (direct smear and evergreen kit sedimentation technique) coprology from January to July 2019. Factors such as habitat type, keeper’s age and level of education were assessed to evaluate their effect on the prevalence of amoebic dysentery. The prevalence of Entamoeba histolytica was 46.2% (P=0,079 and χ2=18.13). E histolytica was the most predominant parasite species detected and it was present in all instances of mixed parasite infections. Amongst the NH primates positive for E. histolytica, 28 suffered from amoebic dysentery giving a prevalence of 21.9% and one of the infected primates (Cercopithecus pogonias) actually died from amoebic dysentery. The prevalence of mixed infections was significantly lower amongst NH primates living in outdoor enclosures compared to those living in other habitat types (P=0.015, χ2=10.46). The rate of re-infection was significantly higher amongst NH primates under the care of keepers with the lowest (primary school) level of education (P=0.001, χ2=13.09) on one hand and of older keepers (≥50s) (P = 0.008, χ2=13.708) on the other hand. This study shows that amoebic dysentery is a cause for a major concern in the MPS. The housing conditions of the NH primates at the sanctuary, the keeper’s age and level of education were important factors that influenced the prevalence of amoebic dysentery. Adequate measures should be put in place to address the situation.
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