scholarly journals Factors associated with 56-day non-return rate in dairy cattle

2011 ◽  
Vol 46 (6) ◽  
pp. 648-654 ◽  
Author(s):  
Ramiro Fouz ◽  
Fernando Gandoy ◽  
María Luisa Sanjuán ◽  
Eduardo Yus ◽  
Francisco Javier Diéguez
Keyword(s):  
Logistic Models ◽  
Herd Size ◽  
Return Rate ◽  
Dairy Herds ◽  
Model Parameters ◽  
North West ◽  
Factors Associated ◽  
Lactating Cows ◽  
Service Conception ◽  
Major Factors

The objective of this work was to identify factors associated with the 56-day non-return rate (56-NRR) in dairy herds in the Galician region, Spain, and to estimate it for individual Holstein bulls. The experiment was carried out in herds originated from North-West Spain, from September 2008 to August 2009. Data of the 76,440 first inseminations performed during this period were gathered. Candidate factors were tested for their association with the 56-NRR by using a logistic model (binomial). Afterwards, 37 sires with a minimum of 150 first performed inseminations were individually evaluated. Logistic models were also estimated for each bull, and predicted individual 56-NRR rate values were calculated as a solution for the model parameters. Logistic regression found four major factors associated with 56-NRR in lactating cows: age at insemination, days from calving to insemination, milk production level at the time of insemination, and herd size. First-service conception rate, when a particular sire was used, was higher for heifers (0.71) than for lactating cows (0.52). Non-return rates were highly variable among bulls. Asignificant part of the herd-level variation of 56-NRR of Holstein cattle seems attributable to the service sire. High correlation level between observed and predicted 56-NRR was found.

scholarly journals Brucellosis and bovine tuberculosis in dairy farms in the state of Acre, Brazil

2021 ◽  
Vol 15 (2) ◽  
pp. 88-92
Author(s):  
Jefferson Viana Alves Diniz ◽  
Renato Mesquita Peixoto ◽  
Laine Oliveira Silva ◽  
Marina Marie Bento Nogueira ◽  
Rosano Ramos de Freitas ◽  
...  
Keyword(s):  
Milk Production ◽  
Bovine Tuberculosis ◽  
Complement Fixation ◽  
Dairy Farms ◽  
Herd Size ◽  
Occurrence Rate ◽  
Dairy Herds ◽  
Bovine Brucellosis ◽  
Common Features ◽  
Lactating Cows

This study aimed to evaluate the to evaluate the occurrence rate of bovine brucellosis and tuberculosis in dairy herds of Acre State, Brazil. The survey was performed on 487 lactating cows distributed across 27 farms in seven cities from June 2018 to February 2019. Farms were selected according to the following criteria: volume of milk production (150 L/day), distance to an urban perimeter (43 km), and time of dairy activity (12 years). For the diagnosis of brucellosis, buffered acidified plate antigen (BAPA) and complement fixation (CF) tests were used. Among the investigated animals, the occurrence rates for brucellosis and tuberculosis were 1.88% (9/487) and 1.23% (6/487), respectively; among the investigated farms, 11.11% (3/27) and 22.2% (6/27) had livestock diagnosed as positive for brucellosis and tuberculosis, respectively. The farms with tuberculosis-positive cattle possessed some common features with respect to herd size. These farms had considerable herd sizes, which were reared extensively in pastures shared with other susceptible or pathogen-carrying animals. In conclusion, the occurrence rate of bovine brucellosis and tuberculosis in dairy herds from Acre state is, in general, lower than that observed in other states of Brazil. Nevertheless, there is an urgent need for developing strategies to control and eradicate both diseases to prevent eventual outbreaks and pathogen dissemination.

Reproductive performance and survival of Chinese Holstein dairy cows in central China

2012 ◽  
Vol 52 (1) ◽  
pp. 11 ◽  
Author(s):  
J. J. Wu ◽  
D. C. Wathes ◽  
J. S. Brickell ◽  
L. G. Yang ◽  
Z. Cheng ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Management Strategies ◽  
Dairy Farm ◽  
Central China ◽  
Dairy Herds ◽  
Factors Affecting ◽  
Chinese Holstein ◽  
Chinese Holstein Cows ◽  
Service Conception ◽  
Major Factors

Fertility and longevity, major factors affecting the economic performance of dairy herds, are influenced by management and genetics. This study determined the reproductive performance and survival of Chinese Holstein cows in a large, modern dairy farm in central China using two complementary datasets. In Dataset 1, fertility and culling records were obtained from 1430 cows calving in 2008; in Dataset 2, all calving episodes during 2005 and 2006 were recorded (n = 1540) and the subsequent survival and reasons for death or culling of all female calves born during this period were monitored. In Dataset 1, the mean ages at first breeding and first calving for heifers were 18.7 ± 2.6 and 29.3 ± 3.6 months, respectively. Cows (lactations 1–10) were first inseminated at 110 ± 49 days after calving (mean ± s.d.), conceived at 185 ± 103 days and required 2.3 ± 1.6 services per conception with a first service conception rate of 34%. Reproduction performance was lower in the first lactation, with the best fertility in autumn-calving cows. In Dataset 2, 601 live-born heifers were monitored from birth until first calving. Of these, 521 (87%) were inseminated at least once and 502 (84%) calved once, but only 68% of the starting population calved successfully for a second time. The main reasons for culling in both datasets were poor fertility, disease and lameness. Improved management strategies to avoid calving cows in the spring and so offset the adverse effects of summer heat stress together with increased emphasis on selection for good fertility and conformation traits would increase future profitability.

The average culling rate of Dutch dairy herds over the years 2007 to 2010 and its association with herd reproduction, performance and health

2013 ◽  
Vol 81 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Norhariani Mohd Nor ◽  
Wilma Steeneveld ◽  
Henk Hogeveen
Keyword(s):  
Protein Production ◽  
Mixed Model ◽  
Herd Size ◽  
Dairy Herds ◽  
Young Stock ◽  
Herd Level ◽  
Udder Health ◽  
Factors Associated ◽  
Environmental Consequences ◽  
Reproduction Performance

Optimising the number of replacement heifers needed will have positive economic and environmental consequences on herds that rear their own young stock. The number of heifers needed to be kept is closely related with the number of culled dairy cows in the herd. This study therefore looked at the variation that exists in culling rate and herd level factors associated with it. A dataset from 1903 dairy herds available included information at animal level (dates of culling, slaughter/death) and herd level (characteristics of reproduction, performance, health) over the years 2007 to 2010. The average culling rate for slaughter/death was used and was defined for each year as percentage of the herd size that died within 30 d after they were culled. The analysis of the association between average culling rate for slaughter/death and the characteristics of the herd was performed using a mixed model. The results showed that the average culling rate for slaughter/death was 25·4% and varied between 23% (2007) and 28% (2010). More than 70% of the herds have an average culling rate for slaughter/death of less than 30%, showing that there is room for lowering the average culling rate for slaughter/death. A higher average culling rate for slaughter/death is associated with a longer average calving interval, a higher average 305-d protein production, a higher average somatic cell count (SCC), a higher percentage of new high SCC, a more than 5% decrease in herd size, and herds that bought more than 1% of animals per year. A lower average culling rate for slaughter/death is associated with a longer average age, herds that bought less than 1% of animals per year and a more than 5% increase in herd size. In conclusion, the average culling rate for slaughter/death is associated with fertility, udder health and openness of the herd.

scholarly journals Influence of category, herd size, grazing and management on epidemiology of bovine viral diarrhoea in dairy herds

2013 ◽  
Vol 82 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Tomislav Bedeković ◽  
Nina Lemo ◽  
Ljubo Barbić ◽  
Željko Cvetnić ◽  
Ivana Lojkić ◽  
...  
Keyword(s):  
Immunosorbent Assay ◽  
Production Management ◽  
Herd Size ◽  
Enzyme Linked Immunosorbent Assay ◽  
Dairy Herds ◽  
Bovine Viral Diarrhoea ◽  
Tissue Samples ◽  
Persistently Infected ◽  
Diarrhoea Virus ◽  
High Prevalence

The aim of this study was to estimate the influence of category, herd size, common grazing and management as risk factors in maintaining bovine viral diarrhoea infection in dairy herds. A total of 987 sera samples obtained from 202 heifers, 653 cows and 132 calves from 103 herds in Croatia were examined by enzyme-linked immunosorbent assay. In order to establish the prevalence of persistently infected cattle, 35 herds were selected. Ear notch tissue samples from all animals in selected herds (n = 2284) were collected and analyzed by antigen enzyme-linked immunosorbent assay. The true prevalence of specific antibodies was 61.61% and the estimated prevalence of exposure to bovine viral diarrhoea virus at the herd level was 100%. The prevalence of persistently infected animals was 0.53% and the prevalence of persistently infected herds was 20%. The antibodies prevalence was higher in cows, in herds that use common pasture and in larger herds (P < 0.001). The prevalence of persistently infected animals was not connected with the herd size but production management on big farms contributed to maintaining the virus. The obtained results suggest that production management was an important risk factor in bovine viral diarrohea epidemiology. High prevalence of antibodies and high prevalence of persistently infected herds requires implementation of control and eradication programs at a national or even regional level. The presented data complete the BVD epidemiological investigations from this part of Europe.

Fertility of inseminations with two sperm concentrations in oestrus-synchronized cattle

1973 ◽  
Vol 17 (2) ◽  
pp. 163-168
Author(s):  
L. J. Boyd ◽  
G. F. Smith ◽  
P. D. P. Wood ◽  
J. Craven ◽  
D. R. Melrose ◽  
...  
Keyword(s):  
Field Trials ◽  
Return Rate ◽  
Breeding Period ◽  
Dairy Herds ◽  
Dairy Heifers ◽  
Melengestrol Acetate ◽  
Beef Herds ◽  
Live Sperm ◽  
And Control

SUMMARYTwo field trials were conducted to evaluate oestrus synchronization under farm conditions and to determine if increased sperm numbers per insemination would enhance fertility at the first synchronized oestrus. One hundred and seventy-seven previously unmated British Friesian females in 6 dairy herds and 236 suckler cows in 9 beef herds were used. Treated animals received 1·0 mg melengestrol acetate (MGA) daily for 14 days. Treated and control animals were inseminated with either 15 or 60 million sperm per first insemination.Oestrus was synchronized in 94% of the treated dairy heifers and 66% of the treated suckler cows. Oestrus detection by herdsmen appeared to be much less precise in suckler herds than in the dairy herds.First inseminations were given during a 21-day breeding period (commencing at withdrawal of MGA) to 97% of treated and 79% of control dairy heifers (P<0·01), and to 77% of the treated and 69% of the control suckler cows (P>0·05). On an average, first inseminations were given 10 days earlier to treated heifers and 7 days earlier to treated suckler cows than to their control counterparts. The 45-day non-return rate to first inseminations was 81% for control and 41% for treated dairy heifers (P< 0·001) and 69% for control and 46% for treated suckler cows (P>0·05).Oestrus-synchronized animals required significantly more services than control animals during a 30-day breeding period. However, there was no difference between treated and control animals in the non-return rate to one or more services given during the prescribed 30-day breeding period.Insemination with 15 or 60 million live sperm had no effect on the non-return rate of treated or control animals.

scholarly journals Factors Associated with Acute Community-Acquired Pyelonephritis Caused by Extended-Spectrum β-Lactamase-Producing Escherichia coli

2021 ◽  
Vol 10 (21) ◽  
pp. 5192
Author(s):  
Mónica Romero Nieto ◽  
Sara Maestre Verdú ◽  
Vicente Gil ◽  
Carlos Pérez Barba ◽  
Jose Antonio Quesada Rico ◽  
...  
Keyword(s):  
Roc Curve ◽  
Goodness Of Fit ◽  
Logistic Models ◽  
Predictive Performance ◽  
Demographic Characteristics ◽  
E Coli ◽  
Factors Associated ◽  
Extended Spectrum ◽  
Male Sex ◽  
Tract Infections

This study aimed to identify the factors associated with the presence of extended-spectrum ß-lactamase-(ESBL) in patients with acute community-acquired pyelonephritis (APN) caused by Escherechia coli (E. coli), with a view of optimising empirical antibiotic therapy in this context. We performed a retrospective analysis of patients with community-acquired APN and confirmed E. coli infection, collecting data related to demographic characteristics, comorbidities, and treatment. The associations of these factors with the presence of ESBL were quantified by fitting multivariate logistic models. Goodness-of-fit and predictive performance were measured using the ROC curve. We included 367 patients of which 51 presented with ESBL, of whom 90.1% had uncomplicated APN, 56.1% were women aged ≤55 years, 33.5% had at least one mild comorbidity, and 12% had recently taken antibiotics. The prevalence of ESBL-producing E. coli was 13%. In the multivariate analysis, the factors independently associated with ESBL were male sex (OR 2.296; 95% CI 1.043–5.055), smoking (OR 4.846, 95% CI 2.376–9.882), hypertension (OR 3.342, 95% CI 1.423–7.852), urinary incontinence (OR 2.291, 95% CI 0.689–7.618) and recurrent urinary tract infections (OR 4.673, 95% CI 2.271–9.614). The area under the ROC curve was 0.802 (IC 95% 0.7307–0.8736), meaning our model can correctly classify an individual with ESBL-producing E. coli infection in 80.2% of cases.

scholarly journals PELAYANAN DAN FASILITAS KESEHATAN, BIAYA PERSALINAN, DAN KEBIJAKAN DI TEMPAT BERSALIN MEMPENGARUHI IBU DALAM MEMILIH TEMPAT BERSALIN DI KELURAHAN KEMIRI MUKA, KECAMATAN BEJI, DEPOK

2020 ◽  
Vol 2 (2) ◽  
pp. 61-68
Author(s):  
Nourmayansa Vidya ◽  
Efa Apriyanti ◽  
Ayunda Nia Agustina ◽  
Maharaufa Fathmanda
Keyword(s):  
Mortality Rate ◽  
Return Rate ◽  
Infant Mortality Rate ◽  
P Value ◽  
Chi Square ◽  
Cross Sectional ◽  
Live Births ◽  
Factors Associated ◽  
Birth Place ◽  
Chisquare Test

  ABSTRAK Salah satu indicator derajat kesehatan suatu Negara adalah angka kematian ibu dan bayi. 52.4% ibu-ibu di Indonesia memiliki akses ke pelayanan maternal. Angka Kematian Ibu (AKI) di Indonesia tahun 2008 menurut Survei Demografi Kesehatan Indonesia adalah 307 per 100.000 kelahiran hidup, jauh dari target yang seharusnya yaitu 110 per 100.000 kelahiran hidup. Tujuan umum penelitian ini adalah untuk mengetahui faktor-faktor berhubungan dengan keputusan ibu memilih tempat bersalin, diantaranya adalah pelayanan kesehatan, fasilitas kesehatan, biaya persalinan, dan kebijakan di tempat bersalin. Sample penelitian adalah ibu-ibu yang berada di kelurahan Kemiri Muka – Depok berjumlah 125 orang. Penelitian ini menggunakan kuesioner dan Return rate = 100%. Penelitian ini menggunakan metode cross sectional dan analisa data univariat menggunakan distribusi frekuensi serta bivariat menggunakan chi-square. Hasil penelitian menunjukan adanya hubungan bermakna antara dan fasilitas kesehatan (p Value = 0.033; = 0.05) dengan pilihan tempat bersalin. Kata Kunci: faktor, ibu, Kemiri Muka, pemilihan tempat bersalin   ABSTRACT One indicator of a country's health status is the maternal and infant mortality rate. 52.4% of mothers in Indonesia have access to maternal services. Maternal Mortality Rate (MMR) in Indonesia in 2008 according to the Demographic Health Survey of Indonesia is 307 per 100,000 live births, its far from the supposed target of 110 per 100,000 live births. The general objective of this study was to determine the factors associated with mother's decision when choosing a birth place, including the choice of giving birth. The factors that affect mother's decision when choosing a birth place are characteristic of the respondents and distance delivery and home place. Research sample is mothers residing in RW 03 Kelurahan Kemiri Muka - Depok totaling 125 people. This study uses a questionnaire and return rate = 100%. This study uses cross sectional data analysis using univariate and bivariate frequency distribution using the chisquare test. The results showed that there was a significant relationship between respondent’s education (p-value = 0.009; = 0.05), the husband's income & (pvalue = 0.046; = 0.05), and health facilities (p -value = 0.033; = 0.05) with a choice of place of birth. Key words: factor, mother, Kemiri Muka, choosing a birth place

scholarly journals COVID-19 pandemic-related anxiety, distress and burnout: prevalence and associated factors in healthcare workers of North-West Italy

BJPsych Open ◽  
2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Andrea Naldi ◽  
Fabrizio Vallelonga ◽  
Alessandra Di Liberto ◽  
Roberto Cavallo ◽  
Monica Agnesone ◽  
...  
Keyword(s):  
Trait Anxiety ◽  
State Anxiety ◽  
Healthcare Workers ◽  
Maslach Burnout Inventory ◽  
Work Characteristics ◽  
Psychological Outcome ◽  
North West ◽  
Factors Associated ◽  
Family And Work ◽  
The Impact

Background The COVID-19 pandemic caused drastic changes in healthcare and severe social restrictions. Healthcare workers (HCWs) are on the front line against the virus and have been highly exposed to pandemic-related stressors, but there are limited data on their psychological involvement for a large sample in Italy. Aims To investigate the prevalence of anxiety, distress and burnout in HCWs of North-West Italy during the COVID-19 pandemic, and to detect potential psychosocial factors associated with their emotional response. Method This cross-sectional, survey-based study enrolled 797 HCWs. Participants completed the Impact of Event Scale – Revised, the State-Trait Anxiety Inventory – Form Y and the Maslach Burnout Inventory; demographic, family and work characteristics were also collected. Global psychological outcome, differences among professions and independent factors associated with worst psychological outcome were assessed. Results Almost a third of the sample had severe state anxiety and distress, high emotional exhaustion and depersonalisation, and low personal accomplishment. Distress was higher in women and nurses, whereas depersonalisation was higher in men. Family division, increased workload, job changes and frequent contact with COVID-19 were associated with worst psychological outcome. Trait anxiety was associated with significantly higher risk for developing state anxiety, distress and burnout. Conclusions An elevated psychological burden related to the COVID-19 pandemic was observed in HCWs of North-West Italy. The identification of family and work characteristics and a psychological pre-existing condition as factors associated with worst psychological outcome may help provide a tailored, preventive, organisational and psychological approach in counteracting the psychological effects of future pandemics.

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