scholarly journals Heifer management characterization in dairy herds from the west of Buenos Aires, Argentina

2021 ◽  
Vol 58 ◽  
pp. e178793
Author(s):  
Federico Demateis Llera ◽  
Claudina Vissio ◽  
María Paula Turiello ◽  
María Alejandra Herrero ◽  
Alejandro José Larriestra
Keyword(s):  
Buenos Aires ◽  
Dairy Farm ◽  
High Impact ◽  
Dairy Herds ◽  
The West ◽  
Principal Coordinates Analysis ◽  
Cross Sectional ◽  
Feeding Management ◽  
Principal Coordinates ◽  
Growth Development

The replacement program in a dairy farm represents the second or third largest cost in a dairy operation. This study aimed to characterize and typify the practices related to the dairy heifer replacement program and describe the growth, development, and health parameters during this period in commercial dairy herds in Trenque Lauquen. A cross-sectional observational study was carried out, including 54 randomly selected dairy farms that were visited once to collect data about facilities and management through a semi-structured survey. Cluster and principal coordinates analysis were applied to classify the farms based on all variables collected, grouped in four main areas: pre-fresh cows, colostrum management, pre-weaning calf ’s management, and personnel. Additionally, growth, development, and health status were also recorded and described for calves and breeding heifers. Two similar-sized farm clusters were identified with differences in management and facilities in different areas of calves rearing. In one cluster there was a greater proportion of farms having a pre-fresh group, implementing appropriate health (colostrum, vaccination) and feeding management. Also, differences in personnel and technical support were relevant. The estimated body gain was 452 and 774 g/d for calves younger or older than 60 d of age, respectively. The age and weight farm averages in breeding heifers were 21.0 mo (range: 16.7-27.5) and 416.3 kg (range: 336.7-519.3), respectively. Diarrhea and respiratory affections were the major problems in pre-weaning calves and heifer rearing, respectively. The median mortality was 7.3, 7.6, and 2.9% at the calving, pre-weaning, and heifer rearing period, respectively. The results showed an improvement opportunity for producers, the design of precise and high impact programs that could lead to an improved replacement program. 

A Cross-sectional Study on Infertility and its Causes in Small Holder Dairy Cattle in Selected Counties of Kenya

2020 ◽  
Keyword(s):  
Neospora Caninum ◽  
Dairy Farm ◽  
Holistic Approach ◽  
Sub Saharan Africa ◽  
Bovine Viral Diarrhea ◽  
Dairy Herds ◽  
Calving Interval ◽  
Cross Sectional ◽  
Viral Diarrhea ◽  
Reproductive Indices

Dairy production in Kenya is one of the most developed in sub Saharan Africa. Despite this, it is still faced by challenges attributed to poor nutrition, inappropriate breeding practices, reproductive inefficiency, reproductive diseases among others. A study to establish the infertility rates in selected dairy herds was conducted in three Counties of Kenya from October 2017 to July, 2018. A total of 216 herds were purposively sampled from Nandi, Makueni and Kakamega Counties. Data on reproductive performance was collected and pregnancy and ovarian status determined by per-rectal examination. Other reproductive indices such as calving interval, repeated inseminations were calculated from the records. Blood samples were also collected to screen for Bovine Viral Diarrhea (BVD) and Neospora caninum antibodies. Overall, the percentage of pregnant animals across the examined herds was 30.5% (n=642). Reproductive indices were suboptimal with 2.1 inseminations per conception and a calving interval of 18.8 months; an indication of infertility. About half of the population of animals were anoestrus (46.4%). The sero-prevalence of neosporosis was 24.1 % (n = 552) and Bovine Viral Diarrhea Virus52.3% (n = 545) across all the counties. Additionally, there was no significant association between BVD infection (p=0.575) and neosporosis (p=0.626) on pregnancy status. The findings of this study strongly indicate reproductive wastage in the dairy herds which in turn affects the overall productivity of farms. There is therefore a need for a holistic approach to address infertility as a way of improving dairy farm productivity and profitability.

Human density, economic level and frequency of canine helminths in Buenos Aires

2021 ◽  
Vol 95 ◽  
Author(s):  
D. Rubel ◽  
N. Flaibani
Keyword(s):  
Linear Models ◽  
Buenos Aires ◽  
Toxocara Canis ◽  
The Other ◽  
Green Spaces ◽  
Cross Sectional ◽  
Independent Variables ◽  
Economic Level ◽  
Faecal Samples ◽  
Human Density

Abstract The aim of this study was to explore through cross-sectional study the variation in the prevalence of parasitic helminths in canine faeces collected from green spaces of Buenos Aires according to the human density (HD) and economic level (EL) in the surroundings. HD and EL were considered as independent variables with three categories each. Twenty public squares (one hectare of surface) were randomly selected for each existing combination of the two independent variables. Ten random samples of fresh canine faeces were obtained in each square and analysed for helminths by the sedimentation and flotation techniques. The prevalence for each of the species was analysed using generalized linear models (GLM). The prevalence was modelled with a binomial error distribution and a logit link function. Helminth eggs were detected in 45 out of the 200 (22.5%) faecal samples collected and in 18 of the 20 green spaces sampled. The species observed were Ancylostoma caninum (13% of samples), Trichuris vulpis (8%) and Toxocara canis (4.5%). The GLM indicated that the prevalence of A. caninum in the slum areas (very high HD and very low EL) was higher than that in the other areas studied. However, the HD seemed to contribute more than the EL to the variations in the prevalence of A. caninum in faecal samples. The GLM showed no differences in the prevalence of the other parasite species for the different levels of the independent variables.

scholarly journals Design of Free Stalls for Dairy Herds: A Review

Ruminants ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 1-22
Author(s):  
Frank van Eerdenburg ◽  
Lars Ruud
Keyword(s):  
Optimal Design ◽  
Dairy Cattle ◽  
Animal Welfare ◽  
Milk Yield ◽  
High Impact ◽  
The Body ◽  
Dairy Herds ◽  
Productive Life ◽  
To Come ◽  
Available Information

Lying is an important behavior of dairy cattle. Cows should spend more than 50% of a day lying as it has a high impact on their milk yield and animal welfare. The design, size, and flooring properties of the free stalls influence the time cows spend lying, the way they lie down, and their rising movements. The purpose of this review is to provide an overview of the currently available information with the aim to assist farmers and advisors to come to an optimal design of the free stalls. The design of the free stalls should enable the cows to move and lie in positions as natural as possible. Cows should rest, with all parts of the body, on a clean, dry and soft bed, be able to stretch their front legs forward, lie on their sides with unobstructed space for their neck and head, and rest with their heads against their flanks without hindrance from a partition. When they stand, they should not be hindered by neck rails, partitions, or supports. A comfortable place for cows to lie down helps cows to stay healthy, improve welfare, and increase milk yield. Hence, the probability of a longer productive life for the cows increases and the number of replacements per year decreases.

scholarly journals Publishing at any cost: a cross-sectional study of the amount that medical researchers spend on open access publishing each year

BMJ Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. e047107
Author(s):  
Mallory K. Ellingson ◽  
Xiaoting Shi ◽  
Joshua J. Skydel ◽  
Kate Nyhan ◽  
Richard Lehman ◽  
...  
Keyword(s):  
Open Access ◽  
Senior Author ◽  
High Impact ◽  
Open Access Publishing ◽  
Original Research ◽  
Potential Cost ◽  
Cross Sectional ◽  
Review Articles ◽  
Open Access Journals ◽  
Medical Researchers

ObjectiveTo estimate the financial costs paid by individual medical researchers from meeting the article processing charges (APCs) levied by open access journals in 2019.DesignCross-sectional analysis.Data sourcesScopus was used to generate two random samples of researchers, the first with a senior author article indexed in the ‘Medicine’ subject area (general researchers) and the second with an article published in the ten highest-impact factor general clinical medicine journals (high-impact researchers) in 2019. For each researcher, Scopus was used to identify all first and senior author original research or review articles published in 2019. Data were obtained from Scopus, institutional profiles, Journal Citation Reports, publisher databases, the Directory of Open Access Journals, and individual journal websites.Main outcome measuresMedian APCs paid by general and high-impact researchers for all first and senior author research and review articles published in 2019.ResultsThere were 241 general and 246 high-impact researchers identified as eligible for our study. In 2019, the general and high-impact researchers published a total of 914 (median 2, IQR 1–5) and 1471 (4, 2–8) first or senior author research or review articles, respectively. 42% (384/914) of the articles from the general researchers and 29% (428/1471) of the articles from the high-impact medical researchers were published in fully open access journals. The median total APCs paid by general researchers in 2019 was US$191 (US$0–US$2500) and the median total paid by high-impact researchers was US$2900 (US$0–US$5465); the maximum paid by a single researcher in total APCs was US$30115 and US$34676, respectively.ConclusionsMedical researchers in 2019 were found to have paid between US$0 and US$34676 in total APCs. As journals with APCs become more common, it is important to continue to evaluate the potential cost to researchers, especially on individuals who may not have the funding or institutional resources to cover these costs.

scholarly journals Determinants of successful guideline implementation: a national cross-sectional survey

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ying-hui Jin ◽  
Li-Ming Tan ◽  
Khalid S. Khan ◽  
Tong Deng ◽  
Chao Huang ◽  
...  
Keyword(s):  
Guideline Development ◽  
Guideline Implementation ◽  
Medical Specialty ◽  
Cross Sectional Survey ◽  
The West ◽  
Cross Sectional ◽  
Adherence To Guidelines ◽  
Multi Stage ◽  
Geographical Regions ◽  
Tertiary Hospitals

Abstract Background CPGs are not uniformly successful in improving care and several instances of implementation failure have been reported. Performing a comprehensive assessment of the barriers and enablers is key to developing an informed implementation strategy. Our objective was to investigate determinants of guideline implementation and explore associations of self-reported adherence to guidelines with characteristics of participants in China. Methods This is a cross-sectional survey, using multi-stage stratified typical sampling based on China's economic regional divisions (the East, the Middle, the West and the Northeast). 2–5 provinces were selected from each region. 2–3 cities were selected in each province, and secondary and tertiary hospitals from each city were included. We developed a questionnaire underpinned by recommended methods for the design and conduct of self-administered surveys and based on conceptual framework of guideline use, in-depth related literature analysis, guideline development manuals, related behavior change theory. Finally, multivariate analyses were performed using logistic regression to produce adjusted odds ratios (OR) and 95% confidence intervals (95% CI). Results The questionnaire consisted of four sections: knowledge of methodology for developing guidelines; barriers to accessing guideline; barriers to guideline implementation; and methods for improving guideline implementation. There were 1732 participants (87.3% response rate) from 51 hospitals. Of these, 77.2% reported to have used guidelines frequently or very frequently. The key barriers to guideline use were lack of education or training (46.2%), and overly simplistic wording or overly broad scope of recommendations (43.8%). Level of adherence to guidelines was associated with geographical regions (the northeast P < 0.001; the west P = 0.02; the middle P < 0.001 compared with the east), hospital grades (P = 0.028), length of practitioners’ practice (P = 0.006), education background (Ph.D., P = 0.027; Master, P = 0.002), evidence-based medicine skills acquired in work unit (P = 0.012), and medical specialty of practitioner (General Practice, P = 0.006; Surgery, P = 0.043). Conclusion Despite general acknowledgement of the importance of guidelines, the use of guidelines was not as frequent as might have been expected. To optimize the likelihood of adherence to guidelines, guideline implementation should follow an actively developed dissemination plan incorporating features associated with adherence in our study.

scholarly journals Frequency of Occupational Bloodborne Infections and Sharps Injuries among Polish Paramedics from Selected Ambulance Stations

2020 ◽  
Vol 18 (1) ◽  
pp. 60
Author(s):  
Maria Ganczak ◽  
Katarzyna Topczewska ◽  
Daniel Biesiada ◽  
Marcin Korzeń
Keyword(s):  
Knowledge Score ◽  
Emergency Procedure ◽  
The West ◽  
Cross Sectional ◽  
Elisa System ◽  
Hbv Vaccination ◽  
Safe Work ◽  
Bloodborne Infections ◽  
Sharps Injuries ◽  
Anti Hiv

To evaluate the prevalence of bloodborne infections (BBIs) and assess the incidence and selected risk factors for sharps injuries (SIs), a cross-sectional serosurvey was performed between December 2018 and October 2019 among 286 paramedics (76.5% males; mean age, 37 years) from 17 randomly selected ambulance stations in the West Pomeranian region of Poland. An ELISA system was used to detect anti-HBc, anti-HCV, and anti-HIV. HBV vaccination uptake was 95.6%; 7.3% (95% CI: 4.6–11.0%) paramedics were anti-HBc positive, and anti-HCV/anti-HIV seropositivity was not reported. Almost one-fourth of paramedics reported having had ≥1 SI during the preceding year (Me = 6.0, range 1–100). Most recent exposures primarily took place during an emergency procedure (76.7%), in an ambulance (45.2%), caused by hollow-bore needles (73.8%), and were not reported (50.0%). Additionally, 52.2% of paramedics reported needle recapping, and 52.6% did not use safety engineered devices (SEDs) at work. Mean knowledge score was low (2.6 ± 1.7); 3.4% had never participated in infection-control (IC) training, and those not trained were more likely to suffer a SI (odds ratio (OR) 4.64; p = 0.03). Due to frequent SIs, of which half are unreported, paramedics remain at risk of acquiring occupational BBIs. SI risk could be reduced by providing training on IC procedures, ensuring better compliance with safe work practices, and supplying more SEDs.

scholarly journals Genotyping of Two Mediterranean Trout Populations in Central-Southern Italy for Conservation Purposes Using a Rainbow-Trout-Derived SNP Array

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1803
Author(s):  
Valentino Palombo ◽  
Elena De Zio ◽  
Giovanna Salvatore ◽  
Stefano Esposito ◽  
Nicolaia Iaffaldano ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Genetic Structure ◽  
Fishery Management ◽  
Snp Array ◽  
Fine Scale ◽  
Principal Coordinates Analysis ◽  
Data Set ◽  
Management Actions ◽  
Principal Coordinates ◽  
Mediterranean Trout

Mediterranean trout is a freshwater fish of particular interest with economic significance for fishery management, aquaculture and conservation biology. Unfortunately, native trout populations’ abundance is significantly threatened by anthropogenic disturbance. The introduction of commercial hatchery strains for recreation activities has compromised the genetic integrity status of native populations. This work assessed the fine-scale genetic structure of Mediterranean trout in the two main rivers of Molise region (Italy) to support conservation actions. In total, 288 specimens were caught in 28 different sites (14 per basins) and genotyped using the Affymetrix 57 K rainbow-trout-derived SNP array. Population differentiation was analyzed using pairwise weighted FST and overall F-statistic estimated by locus-by-locus analysis of molecular variance. Furthermore, an SNP data set was processed through principal coordinates analysis, discriminant analysis of principal components and admixture Bayesian clustering analysis. Firstly, our results demonstrated that rainbow trout SNP array can be successfully used for Mediterranean trout genotyping. In fact, despite an overwhelming number of loci that resulted as monomorphic in our populations, it must be emphasized that the resulted number of polymorphic loci (i.e., ~900 SNPs) has been sufficient to reveal a fine-scale genetic structure in the investigated populations, which is useful in supporting conservation and management actions. In particular, our findings allowed us to select candidate sites for the collection of adults, needed for the production of genetically pure juvenile trout, and sites to carry out the eradication of alien trout and successive re-introduction of native trout.

scholarly journals Scientific output of Brazilian dermatologists during the last 25 years in the five highest impact factor journals in dermatology

2012 ◽  
Vol 87 (5) ◽  
pp. 714-716
Author(s):  
Mariane Da Cas de Aquim Martins ◽  
Marília Gabriela Linné Netto Carneiro ◽  
Joyce Benck Utzig ◽  
Eleolina Lara Kaled Neta ◽  
Majenna Andrade Pachnicki ◽  
...  
Keyword(s):  
Impact Factor ◽  
Scientific Output ◽  
High Impact ◽  
Pemphigus Foliaceus ◽  
High Impact Factor ◽  
Controlled Clinical Trials ◽  
Cross Sectional ◽  
Qualitative And Quantitative ◽  
Area Of Interest ◽  
Number Of Publications

BACKGROUND: The qualitative and quantitative scientific output of Brazilian dermatologists in journals of high impact factor is little known. OBJECTIVE: To describe the scientific output of dermatologists from Brazilian institutions in journals of high impact factor. METHODS: The five journals with the highest impact factor in dermatology were analyzed. All articles produced from Brazilian institutions between 1986 and 2010 were compiled and the following aspects were analyzed: position of Brazilian researchers in the list of authors, selected theme, experimental design, studied disease, area of interest and year of publication. RESULTS: Seventy-four articles written with the participation of Brazilian dermatologists have been identified. Upon grouping the articles in five-year periods, an important increase was observed in the Brazilian production from the year 2006 onwards. The dermatologists were placed as second authors in the majority of cases (53.66%). According to the selected theme to be studied, the majority of the articles had a laboratory focus (45.95%). The majority of the articles reported cross-sectional studies or non-controlled clinical trials (both at 17.57%), and pemphigus foliaceus was the most studied disease (29.73%). CONCLUSION: The increase in the number of publications by Brazilian dermatologists over the last years is encouraging, but it is still small in comparison to the total number of articles published in these five periodicals.

scholarly journals Is Telomere Length a Biomarker for Aging: Cross-Sectional Evidence from the West of Scotland?

PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e45166 ◽  
Author(s):  
Geoff Der ◽  
G. David Batty ◽  
Michaela Benzeval ◽  
Ian J. Deary ◽  
Michael J. Green ◽  
...  
Keyword(s):  
Telomere Length ◽  
The West ◽  
Cross Sectional
Sign in / Sign up

Export Citation Format

Share Document