Systematic review and meta-analysis of the efficacy of reproductive management practices used to induce resumption of ovarian cyclical activity in anestrous does

Díaz, Daniel; Rosiles, R; Urías-Castro, Christian; Rodriguez-Gaxiola, Miguel Angel; Camacho, Soila Maribel Gaxiola; Montero-Pardo, Arnulfo

doi:10.1016/j.prevetmed.2019.104709

Cited by 9 publications

(17 citation statements)

References 85 publications

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“…We used subgroup meta‐analyses to aggregate independent studies first at the national level and second at the regional level according to the seven regions defined by the World Health Organization (WHO) (WHO, 2003): sub‐Saharan Africa, Middle East and North Africa, North America, Latin America and the Caribbean, Europe and Central Asia, South Asia and East Asia and Pacific. As described elsewhere (Diaz et al., 2019; Romo‐Barron et al., 2019), we used a significance test for overall effect with z statistic (effect size = 0) and assessed significant heterogeneity across trials with Cochran's Q statistic ( X 2 test). Finally, we used the I 2 statistic to determine the proportion of variation in the effects due to variations in true effects rather than sampling error (Borenstein et al., 2017).…”

Section: Methodsmentioning

confidence: 99%

Pooled molecular occurrence of Mycoplasma gallisepticum and Mycoplasma synoviae in poultry: A systematic review and meta‐analysis

Chaidez-Ibarra

Velazquez

Enríquez-Verdugo

et al. 2021

Transbounding Emerging Dis

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Worldwide, Mycoplasma gallisepticum (MG) and M. synoviae (MS) are the main agents responsible for chronic respiratory disease in poultry. Therefore, we conducted a systematic review and meta-analysis to estimate their occurrence. We searched electronic databases to find peer-reviewed publications reporting the molecular detection of MG and MS in poultry and used meta-analysis to estimate their pooled global occurrence (combined flock and individual), aggregating results at the regional and national levels. We performed a subgroup meta-analysis for subpopulations (broilers, layers, breeders and diverse poultry including turkeys, ducks and ostriches) and used meta-regression with categorical modifiers. We retrieved 2294 publications from six electronic databases and included 85 publications from 33 countries that reported 62 studies with 22,162 samples for MG and 48 studies with 26,413 samples for MS. The pooled global occurrence was 38.4% (95% CI: 23.5-54.5) for MS and 27.0% (20.4-34.2) for MG. Among regions, Europe and Central Asia had the lowest occurrence for both pathogens, while MG and MS were highly prevalent in South Asia and sub-Saharan Africa, respectively. At the national level, MG occurrence was higher in Algeria, Saudi Arabia and Sudan, whereas China, Egypt and Ethiopia reported higher values of MS. Among the poultry subpopulations, MS and MG were more prevalent in the breeders and layers (62.6% and 31.2%, respectively) than in diverse poultry. The year of publication, the sample size and the level of ambient air pollution (measured indirectly by PM2.5) were associated with the occurrence of both mycoplasmas. Our study revealed high and heterogeneous occurrence values of MG and MS and justifies the need for early detection and improved control measures to reduce the spread of these pathogens.

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Section: Methodsmentioning

confidence: 99%

Pooled molecular occurrence of Mycoplasma gallisepticum and Mycoplasma synoviae in poultry: A systematic review and meta‐analysis

Chaidez-Ibarra

Velazquez

Enríquez-Verdugo

et al. 2021

Transbounding Emerging Dis

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“…F I G U R E 6 Forest plot showing the impact direction of studies in Group 5 allows for eliminating inconsistencies in individual studies to make stronger and more accurate estimates for the effect size of the population. These estimates also find a place in veterinary medicine and are widely applied in this field (Diaz et al, 2019;Palacin et al, 2011;Yan et al, 2016). This study evaluated both the effect of different synchronization methods applied to sheep on pregnancy rates and the inseason and out-of-season status of sheep in each subgroup.…”

Section: Discussionmentioning

confidence: 99%

A meta‐analysis of the effects of synchronization protocols applied to sheep in Turkey on pregnancy rates during breeding and non‐breeding seasons

Arıkan

Mat

Alkan

et al. 2021

Veterinary Medicine & Sci

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This study aimed to determine common pregnancy rates and effect sizes with metaanalysis of studies investigating the effect of different synchronization protocols applied to sheep during breeding and non-breeding seasons on pregnancy rates. Common pregnancy rates were estimated by coalescing pregnancy rates of studies performed independently, and heterogeneity between the studies was investigated. The meta-analysis included 24 studies that determined pregnancy rates in 78 different groups consisting of 1934 sheep with five different synchronization protocols in Turkey between 2001 and 2020. Among the different synchronization methods, the P4+PMSG group (90.37%) during the breeding season and P4+PGF2α (69.77%) and P4 (68.75%) groups during the non-breeding season showed the highest pregnancy rate. Also, the effect size of P4+PMSG application during the breeding season was calculated as 0.934 (95% confidence interval: 0.901-0.967), and the effect size of P4+PGF2α application during the non-breeding season was calculated as 0.709 (95% confidence interval: 0.406-1.013). To conclude, the combination of P4+PMSG during the breeding season and progestogen and other hormone applications during the nonbreeding season are the most effective methods for estrus synchronization and for achieving the desired pregnancy rates.

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“…]4) to which the NTS isolates were resistant and aggregated the studies by the type of sample. The overall effect of the model was assessed with the z statistic assuming an effect size = 0, whereas the Cochran's Q statistic (X 2 test) was used to assess significant heterogeneity across trials and theI 2 statistic was used to measure the proportion of variation in the effects caused by heterogeneity in the true effects rather than sampling error (Diaz et al, 2019;Romo-Barron et al, 2019). All analyses were performed on Stata 12 (StataCorp, TX, USA) and the graphs were constructed on Prism 9 (GraphPad Inc., CA, USA).…”

Section: Summary Measures and Statistical Analysismentioning

confidence: 99%

Prevalence, main serovars, and antimicrobial resistance profiles of Non-typhoidal Salmonella in poultry samples from the Americas: A systematic review and meta-analysis

Díaz

Hernandez-Carreño

Velazquez

et al. 2021

Preprint

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Poultry and poultry-derived products such as meat and eggs are among the main sources of non-typhoidal Salmonella (NTS) transmission to the human. Therefore, we performed a systematic review and used random-effects meta-analyses to 1) estimate the prevalence of NTS in poultry samples from birds, products and subproducts, and environmental samples, 2) examine the diversity and frequency of their serovars, and 3) estimate the prevalence and profiles of antimicrobial resistance (AMR) in NTS isolates reported in studies from the Americas. We included 157 studies from 15 countries comprising 261,408 poultry samples and estimated an overall pooled prevalence of 17.9% (95% CI: 10.8–26.3) in birds, 21.8% (17.7–26.1) in products and subproducts, and 29.5% (24.2–35.1) in environmental samples. At the national level, the prevalence of NTS was heterogenous across countries with the highest values in Mexico, the USA, and Canada. In total, 131 serovars were identified from 13,388 isolates, Heidelberg, Kentucky, Enteritidis, and Typhimurium were the most prevalent in the overall top 10 ranking (range 6.5–20.8%). At the national level, Enteritidis and Typhimurium were identified in most of the countries, though with national differences in their ranks. The prevalence of AMR increased from 24.1% for 1 antibiotic, to 36.2% for 2-3 antibiotics, and 49.6% for ≥ 4 antibiotics. Kentucky, Heidelberg, Typhimurium, and Enteritidis were the serovars with the highest prevalence of AMR and tetracycline, ampicillin, streptomycin, ceftiofur, and amoxicillin-clavulanic acid were the top five antibiotics to which NTS isolates were resistant. In conclusion, NTS was distributed through the avian production chain with high and heterogenous values of prevalence in poultry samples. Besides, there were distinctive patterns of serovars distribution across countries and an alarming prevalence of AMR among zoonotic serovars.

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Systematic review and meta-analysis of the efficacy of reproductive management practices used to induce resumption of ovarian cyclical activity in anestrous does

Cited by 9 publications

References 85 publications

Pooled molecular occurrence of Mycoplasma gallisepticum and Mycoplasma synoviae in poultry: A systematic review and meta‐analysis

Pooled molecular occurrence of Mycoplasma gallisepticum and Mycoplasma synoviae in poultry: A systematic review and meta‐analysis

A meta‐analysis of the effects of synchronization protocols applied to sheep in Turkey on pregnancy rates during breeding and non‐breeding seasons

Prevalence, main serovars, and antimicrobial resistance profiles of Non-typhoidal Salmonella in poultry samples from the Americas: A systematic review and meta-analysis

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