keyword
MENU ▼
Read by QxMD icon Read
search

seasonality of birth

keyword
https://www.readbyqxmd.com/read/28808074/trends-in-antibiotic-use-by-birth-season-and-birth-year
#1
Alan C Kinlaw, Til Stürmer, Jennifer L Lund, Lars Pedersen, Michael D Kappelman, Julie L Daniels, Trine Frøslev, Christina D Mack, Henrik Toft Sørensen
OBJECTIVES: We examined 2 birth cohort effects on antibiotic prescribing during the first year of life (henceforth, infancy) in Denmark: (1) the birth season effect on timing and overall occurrence of antibiotic prescribing, and (2) the birth year effect amid emerging nationwide pneumococcal vaccination programs and changing prescribing guidelines. METHODS: We linked data for all live births in Denmark from 2004 to 2012 (N = 561 729) across the National Health Service Prescription Database, Medical Birth Registry, and Civil Registration System...
August 14, 2017: Pediatrics
https://www.readbyqxmd.com/read/28807607/plasma-cell-and-serum-antibody-responses-to-influenza-vaccine-in-preterm-and-full-term-infants
#2
Carl T D'Angio, Claire P Wyman, Ravi S Misra, Jessica L Halliley, Hongyue Wang, Julianne E Hunn, Caitlin M Fallone, F Eun-Hyung Lee
BACKGROUND: Preterm (PT) infants are at greater risk for severe influenza infection and experience decrements in long-term antibody responses to vaccines. This may related to defects in antibody secreting cell (ASC) generation. OBJECTIVE: To investigate the relationships among the frequencies of influenza-specific antibody secreting cells, ASC numbers and subsets, and antibody responses to influenza vaccines (IV) among PT and full-term (FT) infants. DESIGN/METHODS: We enrolled 11 former PT (≤32weeks' gestation, ≤1500 g' birth weight) and 11FT infants, 6-17months of age, receiving their first influenza immunizations...
August 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28806499/hibernating-little-pocket-mice-show-few-seasonal-changes-in-bone-properties
#3
Noellyn Pineda, Marjorie Owen, Claire Tucker, Sam Wojda, Stanley Kitchen, Hal Black, Seth Donahue
Periods of disuse or physical inactivity increase bone porosity and decrease bone mineral density, resulting in a loss of bone mechanical competence in many animals. Although large hibernators like bears and marmots prevent bone loss during hibernation, despite long periods of physical inactivity, some small hibernators do lose bone during hibernation. Little pocket mice (Perognathus longimembris) remain underground during winter hibernation and undergo bouts of torpor and interbout arousals, but the torpor bout duration is shorter than other rodent hibernators...
August 14, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28805904/higher-dominance-position-does-not-result-in-higher-reproductive-success-in-female-beef-cattle
#4
R Šárová, M Špinka, F Ceacero
The aim of this study was to investigate whether beef cows that achieve higher dominance status than their age-mates have prolonged reproductive life, increased number of offspring born and weaned, and/or heavier BW of the offspring. We also assessed whether maternal dominance rank affects the offspring sex ratio. We recorded data on 309 potential deliveries of female beef cows with known dominance status in a seasonally pastured herd over a 14-yr period and linked them with yearly records of dominance status of the cows assessed around feeding...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28803015/calf-and-replacement-heifer-mortality-from-birth-until-weaning-in-pasture-based-dairy-herds-in-new-zealand
#5
E L Cuttance, W A Mason, J McDermott, R A Laven, S McDougall, C V C Phyn
The aims of this study were to (1) estimate the perinatal (birth to 24 h) and postnatal (∼24 h to the mean weaning age of 13 wk) mortality risk in pasture-based dairy calves until weaning, and (2) identify associated risk factors in the 2015 calving season. A prospective survey of 32 seasonal calving dairy farms was undertaken. Farmers recorded (daily) the number and sex of the calves alive or dead in the paddocks where cows calved. All daily animal movements in and out of the calf rearing facilities, including death and euthanasia, and the identification of the animals (if applicable) were recorded, and a survey of the farm management practices was undertaken...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28772345/from-gestation-to-weaning-combining-robust-design-and-multi-event-models-unveils-cost-of-lactation-in-a-large-herbivore
#6
Quentin Richard, Carole Toïgo, Joël Appolinaire, Anne Loison, Mathieu Garel
The cost of current reproduction on survival or future reproduction is one of the most studied trade-offs governing resource distribution between fitness components. Results have often been clouded, however, by the existence of individual heterogeneity, with high-quality individuals able to allocate energy to several functions simultaneously, at no apparent cost. Surprisingly, it has also rarely been assessed within a breeding season by breaking down the various reproductive efforts of females from gestation to weaning, even though resource availability and energy requirements vary greatly...
August 3, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28770125/seasonality-epidemiology-and-outcome-of-congenital-diaphragmatic-hernia-in-south-west-of-iran
#7
Masoud Dehdashtian, Shiva Bashirnejad, Arash Malekian, Mohammad Reza Aramesh, Mohammad Hasan Aletayeb
INTRODUCTION: The pathogenesis of congenital diaphragmatic hernia (CDH) is not clear. Risk factors including environmental factors have been implicated in the pathogenesis of few congenital anomalies. We aimed to assess the effect of season on the incidence of CDH and mortality rate in the southwest of Iran. MATERIAL AND METHODS: In this retrospective study, the records of 60 patients with CDH who were admitted at Neonatal Intensive Care Unit (NICU) of Imam Khomeini Hospital of Ahvaz, Iran were evaluated...
April 2017: Journal of Neonatal Surgery
https://www.readbyqxmd.com/read/28766872/population-based-case-control-study-of-the-association-between-weather-related-extreme-heat-events-and-neural-tube-defects
#8
Aida Soim, Shao Lin, Scott C Sheridan, Syni-An Hwang, Wan-Hsiang Hsu, Thomas J Luben, Gary M Shaw, Marcia L Feldkamp, Paul A Romitti, Jennita Reefhuis, Peter H Langlois, Marilyn L Browne
BACKGROUND: Elevated body core temperature has been shown to have teratogenic effects in animal studies. Our study evaluated the association between weather-related extreme heat events (EHEs) in the summer season and neural tube defects (NTDs), and further investigated whether pregnant women with a high pregestational body mass index (BMI) have a greater risk of having a child with NTDs associated with exposure to EHE than women with a normal BMI. METHODS: We conducted a population-based case-control study among mothers of infants with NTDs and mothers of infants without major birth defects, who participated in the National Birth Defects Prevention Study and had at least 1 day of the third or fourth week postconception during summer months...
August 2, 2017: Birth defects research
https://www.readbyqxmd.com/read/28765079/developmental-neurotoxicity-and-autism-a-potential-link-between-indoor-neuroactive-pollutants-and-the-curious-birth-order-risk-factor
#9
REVIEW
Wesley A Gray, Vincent A Billock
Epidemiological and demographic studies find an increased risk of autism among first-borns. Toxicological studies show that some semi-volatile substances found in infant products produce adverse effects in neural and endocrine systems of animals, including behavioral and developmental effects. Several factors elevate the exposure of human infants to these chemicals. The highest exposures found in infants are comparable to the exposures that induce neural toxicity in animals. A review of these literatures suggests a linking hypothesis that could bridge the epidemiological and toxicological lines of evidence: an infant's exposure to neuroactive compounds emitted by infant products is increased by product newness and abundance; exposure is likely maximized for first-born children in families that can afford new products...
July 29, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28763727/the-effect-of-stillbirth-on-reproductive-and-productive-performance-of-pure-egyptian-buffaloes-and-their-crosses-with-italian-buffaloes
#10
Mohammed A F Nasr
High rates of stillbirth in buffaloes are not only emotionally and economically undesirable but also contrary to animal welfare practices. Thus, this study was aimed to investigate risk factors for stillbirth and analyze its effects on the productive and reproductive performance of pure Egyptian buffaloes (PE) and their crossing with the Italian buffaloes (F1 crosses 50%PE and 50%Italian buffaloes and Back cross (BC) 75%PE and 25%Italian buffaloes) under subtropical environmental conditions. Records of a total of 8388 (5169PE, 1494F1 and 1725BC) were used in this study with 1965 actual first parity records (489, 621 and 855, respectively)...
July 27, 2017: Theriogenology
https://www.readbyqxmd.com/read/28752212/factors-affecting-the-livestock-herd-size-among-smallholder-households-in-zambia
#11
Mary Lubungu
Structural changes in the economic and demographic landscapes in the developing countries create a host of opportunities for smallholder livestock producers to tap into the economic growth from which they have largely been excluded. However, small livestock herd sizes limit the opportunities available to farmers to commercialize and benefit from the growing demand for livestock and livestock products. Therefore, understanding what it takes to build and maintain the herd size is a critical step in addressing the problem of low market participation...
July 27, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28750868/effect-of-colostrum-quantity-and-quality-on-neonatal-calf-diarrhoea-due-to-cryptosporidium-spp-infection
#12
K Arsenopoulos, A Theodoridis, E Papadopoulos
This study was conducted to assess the effect of colostrum quality and quantity on Cryptosporidium spp. calf diarrhoea in an intensive dairy cattle farm in Greece. Faecal samples were collected from 100 dairy calves randomly selected and born during all 4 seasons (March 2015 to May 2016) of the year. In total, 71% of the selected calves were positive for Cryptosporidium spp. oocysts. The statistical analysis revealed influence of colostrum quality on faecal score. Linear regression showed that the colostrum quantity during the first day of life was negatively associated with the number of Cryptosporidium spp...
August 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28743545/maternal-pneumococcal-nasopharyngeal-carriage-and-risk-factors-for-neonatal-carriage-following-the-introduction-of-pneumococcal-conjugate-vaccines-in-the-gambia
#13
Effua Usuf, Abdoulie Bojang, Bully Camara, Isatou Jagne, Claire Oluwalana, Christian Bottomley, Umberto D'Alessandro, Anna Roca
OBJECTIVES: Pneumococcal nasopharyngeal carriage occurs early in life. However, the role of vertical transmission is not well understood. The aims of the study are to describe carriage among mothers and their newborns, and assess for risk factors for neonatal carriage. METHODS: In a nested retrospective cohort study, we analysed data from the control arm of a randomized control trial conducted in The Gambia two to three years after PCV13 introduction. Nasopharyngeal swabs were collected from 374 women and their newborns on the day of delivery, and 3, 6, 14 and 28 days later...
July 22, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28741647/the-association-between-season-of-birth-age-at-onset-and-clozapine-use-in-schizophrenia
#14
J S Kim, C M Park, J A Choi, E Park, H J Tchoe, M Choi, J K Suh, Y H Kim, S H Won, Y C Chung, K Y Bae, S K Lee, S C Park, S H Lee
OBJECTIVE: This study aimed to determine whether the rate of clozapine use, an indicator of refractoriness in schizophrenia, is associated with the season of birth and age at onset in patients with schizophrenia based on nationwide data. METHODS: Patients with schizophrenia (n = 114 749) who received prescriptions for antipsychotic medication between 2008 and 2014 were retrospectively identified from the Korean National Health Insurance Service database. The study population was divided into three groups based on their age at the onset of schizophrenia (early, middle, and late onset)...
July 25, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28738458/-associations-between-season-of-birth-and-age-both-at-menarche-and-at-menopause
#15
J H Si, R R Meng, J Lyu, Y Guo, Z Bian, C Q Yu, L Yang, Y L Tan, P Pei, J S Chen, Z M Chen, L M Li
Objective: To examine the associations between season of birth and factors as age at menarche, age at menopause and reproductive span. Methods: A total of 285 186 female from the China Kadoorie Biobank, with complete data on critical variables and had menarche at 9-18 years old, were included. A total of 132 373 female with natural menopause were included for the analysis on age at menopause and reproductive span. Multiple linear regression models were used to assess the associations of birth season and the age at menarche, menopause, and reproductive span...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28731219/daylight-effect-on-melatonin-secretion-in-adult-female-guanacos-lama-guanicoe
#16
J L Riveros, L M Correa, G Schuler
The wild South American camelids developed a strategy of seasonal reproduction during spring and summer with singleton birth. The photoperiod is one of the factors that may modulate this seasonality where light would be translated into a hormonal signal. This study evaluated the influence of changes in daily light intensity on melatonin concentration in captive guanacos under a long-day photoperiod (16 hr light/8 hr dark; 33 '28'S). Mean melatonin concentration was 28.3 ± 20.3 pg/ml, with a maximum of 52...
July 21, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28727153/month-of-birth-is-associated-with-the-subsequent-diagnosis-of-autoimmune-hypothyroidism-a-nationwide-danish-register-based-study
#17
Marianne Thvilum, Frans Brandt, Thomas Heiberg Brix, Laszlo Hegedüs
BACKGROUND: The triggering of thyroid autoimmunity in the genetically susceptible remains a conundrum. Environmental exposures during gestation and/or early postnatally have proponents, as suggested in diabetes mellitus, with a higher incidence of births during spring and summer. Whether the development of autoimmune hypothyroidism (AIT) is influenced by month or season of birth is less clear. METHOD: Nationwide cohort study of 111,565 individuals diagnosed with AIT and four euthyroid controls per case, matched according to age and sex, were identified from Danish health registers...
July 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28726288/hot-dogs-high-ambient-temperatures-impact-reproductive-success-in-a-tropical-carnivore
#18
Rosie Woodroffe, Rosemary Groom, J Weldon McNutt
Climate change imposes an urgent need to recognise and conserve the species likely to be worst affected. However, while ecologists have mostly explored indirect effects of rising ambient temperatures on temperate and polar species, physiologists have predicted direct impacts on tropical species. The African wild dog (Lycaon pictus), a tropical species, exhibits few of the traits typically used to predict climate change vulnerability. Nevertheless, we predicted that wild dog populations might be sensitive to weather conditions, because the species shows strongly seasonal reproduction across most of its geographical range...
July 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28711257/seasonal-and-maternal-effects-on-acid-base-l-lactate-electrolyte-and-hematological-status-of-205-dairy-calves-born-to-eutocic-dams
#19
L Kovács, F L Kézér, E Albert, F Ruff, O Szenci
In this study, we used linear mixed models to determine the effects of season, time of sampling relative to birth (factors), duration of the delivery process, duration of maternal grooming, calf body weight (BW) at birth, and time of day (covariates) on values of venous blood gas, acid-base and electrolyte parameters, and l-lactate concentrations in dairy calves born to eutocic dams in summer (SUM, n = 101) and winter (WIN, n = 104). Neonatal vitality was assessed at 0, 1, and 24 h after delivery in a linear scoring system using muscle tone, erection of the head, muscle reflexes, heart rate, and sucking drive as criteria...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28708528/competition-for-oestrous-ewes-between-rams-reared-by-their-mothers-or-artificially-reared-effects-on-sexual-behaviour-and-testosterone-and-cortisol-serum-concentrations
#20
J P Damián, M J Hötzel, G Banchero, R Ungerfeld
The objective of this study was to determine how the social competition for an oestrous ewe affects the sexual behaviour and the endocrine response in two groups of rams, one reared by their mothers and another artificially reared. Thus, we compared the sexual behaviour and testosterone and cortisol changes in each group of rams in competitive and non-competitive tests, both during the first and second breeding seasons. Two groups of rams were: 1) artificially reared lambs, separated from their dams 24-36 h after birth (Week 0) and artificially fed with sheep milk until 10 weeks of age (group AR, n = 14); and 2) lambs reared by their dams until 10 weeks of age (group DR, n = 13)...
June 8, 2017: Theriogenology
keyword
keyword
70281
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"