birth season
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Author(s):  
Farm anullah ◽  
◽  
Momen Khan ◽  

The current study was completed to analyze the effect of natural components on various improvement affecting traits of Kajli sheep in Pakistan. For this reason, we apply two huge contemporary datasets in sheep to explore factors that influence the traits. Therefore, the generation information record of 13715 Kajli sheep lambing accumulated from 1994 to 2010 at Livestock Experimental Stations Khushab and Khizarabad, Punjab. Information records were genuinely analyzed through utilizing PC modified Mixed Model Harvey’s Least Squares and Maximum Likelihood. The two farms information data was analyzed by utilizing an animal model program. The factual model was incorporated to evaluate the Birth Weight (BW), 120 days at Weaning Weight (WW), Pre-Weaning Average Daily Gain (PRADG), Yearling Weight (YW) and Greasy Fleece Weight (GFW). Year of Birth (YOB), Birth Season (BS), Birth Types (BT) and sex was the fix effect in the model. Results indicated that, the overall general values for birth weight, weaning weight, yearling weight, pre-weaning weight and fleece weight were noted. Year of birth, type of birth, sex, and herd was influenced altogether significantly while, birth weight and greasy fleece weight, the period of birth showed no essential difference. In weaning weight and pre-weaning increment normally, year of birth, sort of birth and herd showed a critical contact except for sex. Male sheep were heavier than female sheep and single conceived sheep were also basically heavier than twins were during offspring birth. Results emulate that the Kajli sheep breed can be improved on through selection and further developed management. The cascade type of influence of the current investigation has levelheaded ramification not just for sheep farming by and by just as for intensified associate of boundaries which definitely convince deviation of weight, weight has become itself essential forecaster of in a matter of seconds wellness results. These outcomes displayed there are complex associations among hereditary qualities and ecological elements of parental, placental and fetal beginning. These are profoundly affected traits by maternal sustenance, genes, be concerned, the executive, environment, occasional diversity of seasons.


2021 ◽  
Vol 12 ◽  
Author(s):  
Dongjian Yang ◽  
Jingbo Qiu ◽  
An Qin ◽  
Lei Chen ◽  
Ya Yang ◽  
...  

BackgroundPrevious evidence indicates that birth season is associated with type 2 diabetes in adults. However, information on the association of birth with gestational diabetes mellitus (GDM) is lacking. The present study explores the association between birth seasonality and GDM in East China.MethodsThis retrospective cohort study was conducted at the International Peace Maternal and child health hospital between 2014 and 2019. A total of 79, 292 pregnant women were included in the study after excluding participants with previous GDM, stillbirth, polycystic ovary syndrome, and lack of GDM laboratory records. The multivariate logistic regression model was employed to estimate the odds ratio and 95% confidence interval. After log transformation of blood glucose level, the percentage change and 95% confidence interval were estimated by a multivariate linear model.ResultsThe risk of GDM among pregnant women born in spring, autumn, and winter was not significantly different compared to that among participants born in summer. Pregnant women born in autumn had significantly higher 1-hour postprandial blood glucose (PBG-1h) and 2-hour postprandial blood glucose (PBG-2h) levels than pregnant women born in summer. Compared to pregnant women born in August, the PBG-1h level of pregnant women born in October, November, and December increased significantly, whereas the PBG-2h levels of pregnant women born in November and December increased significantly.ConclusionPregnant women born in autumn exhibit higher postprandial blood glucose levels during pregnancy than in those born in summer. The findings provide evidence that exposure to seasonal changes in early life may influence blood glucose metabolism during pregnancy.


Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000013045
Author(s):  
Prince Sebastian ◽  
Nicolas Cherbuin ◽  
Lisa F Barcellos ◽  
Shelly Roalstad ◽  
Charles Casper ◽  
...  

Objective:This study aims to determine the contributions of sun exposure and ultraviolet radiation (UVR) exposure to risk of paediatric-onset multiple sclerosis (MS).Methods:Children with MS and controls recruited from multiple centres in the USA were matched on sex and age. Multivariable conditional logistic regression was used to investigate the association of time spent outdoors daily in summer, use of sun protection, and ambient summer UVR dose in the year prior to birth and the year prior to diagnosis, with MS risk, adjusting for sex, age, race, birth season, child’s skin colour, mother’s education, tobacco smoke exposure, being overweight, and Epstein-Barr virus infection.Results:332 children with MS (median disease duration: 7.3 months) and 534 controls were included after matching on sex and age. In a fully adjusted model, compared to spending <30 minutes outdoors daily during the most recent summer, greater time spent outdoors was associated with a marked reduction in the odds of developing MS, with evidence of dose-response (30 minutes to 1 hour: adjusted odds ratio (AOR)=0.48, 95% confidence interval [95%CI] 0.23-0.99, p=0.05; 1-2 hours: AOR=0.19, 95%CI 0.09-0.40, p<0.001). Higher summer ambient UVR dose was also protective for MS (AOR=0.76 per kJ/m2, 95%CI 0.62-0.94, p=0.01).Conclusions:If this is a causal association, spending more time in the sun during summer may be strongly protective against developing paediatric MS, as well as residing in a sunnier location.


Author(s):  
Tarina Parpia ◽  
Erling Svensen ◽  
Sarah Elwood ◽  
Anne Wanjuhi ◽  
Ladislaus Blacy ◽  
...  

Micronutrient deficiencies and enteric infections negatively impact child growth and development. We enrolled children shortly after birth in a randomized, placebo-controlled, 2 × 2 factorial interventional trial in Haydom, Tanzania, to assess nicotinamide and/or antimicrobials (azithromycin and nitazoxanide) effect on length at 18 months of age. Cognitive score at 18 months using the Malawi Developmental Assessment Tool (MDAT), which includes gross motor, fine motor, language, and social assessments, was a secondary outcome. Here, we present the MDAT results of 1,032 children. There was no effect of nicotinamide (change in development-for-age Z score [DAZ] −0.08; 95% CI: −0.16, 0) or antimicrobials (change in DAZ 0.04; 95% CI: −0.06, 0.13) on overall MDAT score. The interventions had no effect on cognitive outcomes in subgroups defined by gender, socioeconomic status, birthweight, and birth season or on MDAT subscores. Further analyses are needed to identify targetable risk factors for impaired cognitive development in these settings.


Author(s):  
Caner Tamer ◽  
Emre Şirin

This study was carried out to determine the growth and reproductive performance of Karayaka sheep in Amasya province within the scope of National Animal Breeding Project. Data were collected from 17529 Karayaka lambs of 20120 Karayaka sheep which were born during 2012 to 2015 birth season. In this study, the live weights, survival rates of the lambs in various periods and reproductive traits of Karayaka ewes were investigated. In this study, the live weights, daily live weight gain, survival rates (90th day) and reproductive traits of Karayaka ewes were investigated. The averages of reproductive traits of Karayaka sheep such as infertility, fertility, twins, fecundity, litter size and survival rate were 13.8%, 86.2%, 7.20%, 0.867, 1.01 and 89.0% respectively. The effects of year, sex and type of birth on the birth weights and the live weights of 90 days (weaning) of Karayaka lambs were found to be significant. Daily live weight gain was affected only by year and sex.


Author(s):  
A. Abilov ◽  
P. Kozmenkov ◽  
В. Iolchiev

Purpose: Study of the results of the use of bull-producers imported from the United States in the conditions of the Nizhny Novgorod region.Materials and methods. The work was performed in 2018-2019 in the farms of the Nizhny Novgorod region. The object of study - the heifers of the Holstein breed, which reached 360-380 kg of a living mass aged 13 months and above. Total experience used 495 heifers. Feeding chubs was carried out in accordance with feeding norms, taking into account the physiological state of animals. The insemination of the heifers was carried out by the rectocervical way after synchronization of hunting. We studied the number of seeds, the pregnancy from one insemination, the number of abortions and the number of repeated pubs within a month after the hotel. Statistical analysis of the data obtained was carried out in the SPSSV.15.0 program.Results. It has been established that more than 70% of the heifers were invented at the age of 13-15 months. The pregnancy from one insemination was 58%. The best result (72.2%) was obtained in the group of heifers aged 19 months and above. The results of the study show that the seed season plays an essential role in seeding. The best indicators were obtained in the summer period - 60%, in autumn - 54% and in winter - 56%.Conclusion. The data obtained give reason to believe that the optimal age of the insemination of the heifer is 13-15 months. The result of artificial insemination of the heifer has an influence of the season of the year in the insemination and season of birth of heifers, while the birth season as a factor has a higher value.


2021 ◽  
Vol 51 (4) ◽  
pp. 61-66
Author(s):  
S. L. Belozertseva ◽  
L. L. Petrukhina

The results of studies on the effect of the birth season factor on the lifetime productivity and growth rate of cows are presented. The material for the research was the information database of the "Selex" breeding record program for the highly productive herd of black-motley cattle of the "Pre-Baikal type". The research was carried out under the conditions of the Irkutsk region in 20152019. Replacement heifers, which were evaluated for growth and development, and subsequently for milk production during the 1st and 3rd lactations and lifetime production, were chosen as an object of research. Heifers born in the summer-autumn period, according to the 1st lactation, gave the highest productivity, their milk yield was 6151-6179 kg of milk with a fat content of 3.85%. By the 3rd lactation, cows born in the summer months retained high productivity (7001 kg with a milk fat content of 3.83%). From the cows born in winter, a maximum lifetime production of 30,519 kg was obtained. The cows born in spring have 856 kg less lifetime productivity. With the maximum lifelong productivity, the age in lactations was 4.5, with the minimum - 4.0. This indicates that the shorter the period of productive use, the lower the lifetime milk yield of cows. The cows that gave the highest milk production in the first lactations dropped out of the herd sooner for various reasons, thereby not having reached their full genetic potential and not having shown their possible maximum milk production.


PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258234
Author(s):  
Maaike Groot ◽  
Umberto Albarella ◽  
Jana Eger ◽  
Jane Evans

Cattle were the predominant domestic animal in the Iron Age and Roman Netherlands, yet their management is still incompletely understood. Some aspects of cattle management, such as birth season and the provision of fodder, have received little or no attention so far. This paper is the first to investigate these aspects for the Iron Age and Roman Netherlands, through a case study of the site of Houten-Castellum. The rural settlement of Houten-Castellum was inhabited from the Middle Iron Age to the Middle Roman period, allowing a comparison between the Iron Age and Roman period. Excavations at this site have yielded a large, well-preserved animal bone assemblage. This paper investigates cattle husbandry by using an integrated approach, combining a multi-isotope analysis (oxygen, carbon and strontium) with archaeozoological and archaeobotanical results from Houten-Castellum and comparing the results with archaeobotanical evidence for fodder and evidence for dairy use for the Iron Age and Roman Netherlands in general. While our data set is small and results must therefore be interpreted cautiously, there is convincing evidence for an extended birth season in the Middle Iron Age, as well as the use of fodder.


2021 ◽  
Author(s):  
Habib Syaiful Arif Tuska ◽  
Gretania Residiwati ◽  
Mieke Van Eetvelde ◽  
Karel Verdru ◽  
Maya Meesters ◽  
...  

Abstract Breed type and environmental factors such as breeding season may have a significant impact on neonatal weight loss calf size. We followed a total of 236 elective cesarean sections in Belgian Blue (BB) cattle, in which neonatal calves were morphometrically measured (in cm) in the first 72 hours after delivery of the child using a strictly standardized protocol. The influence of the season of birth on each calf measurement was analyzed using a mixed linear regression models, including farm of origin as a random effect. Calves born in spring had a longer diagonal length (P = 0.05) (69.7 ± 1.24) than those born in autumn (66.9 ± 1.16). The tibial length of calves born in spring (35.8 ± 0.48) was longer (P> 0.02) than those born in autumn (33.1 ± 0.57) or summer (34.1 ± 0.49). Calves born in autumn have a shorter head diameter (P> 0.02) (12.9 ± 0.23) than those born in summer (12.6 ± 0.29) or winter (13.5 ± 0.22). For all other parameters, no differences were found (P> 0.08). Based on the results of this study, it can be concluded that the birth season influences the morphometrics of neonatal BB calves, with a tendency for spring to be associated with the largest body size. The latter is important to know to avoid dystocia when BB cattle are crossed with other breeds.


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