calving records of iranian buffaloes from april 1991 to june 2010 comprising 1,151 herds with 34,911 calving events were used to evaluate reported secondary sex ratio, stillbirth, and calf birth weight. logistic regression models were applied to analyze stillbirth and calf sex at birth, and statistical analysis of calf birth weight was performed using a linear mixed model. overall, the ratio of...

the present study was performed to evaluate the on-station growth performance of local and dorper × local crossbred sheep in eastern amhara region, ethiopia. data on 302 lambs collected over a 4-year period (2009 to 2012) on local and dorper × local crossbred sheep at sirinka breeding, evaluation and distribution site were used in this study. fixed effects considered were breed, lamb sex, birth...

research findings have shown that birth order and season of birth are related to some of the mental disorders such as schizophrenia, mood disorders. autism, attention deficit disorder with hyperactivity and substance abuse, and these disorders are related to dopamine level. a retrospective study was designed to investigate 130 substance abusers (119 males and 11 females) which were treated duri...

PURPOSE Mandel et al recently reported that season of birth and daylight hours (photoperiod) at birth were associated with moderate and high levels of myopia in Israeli conscripts. We sought to investigate whether these associations were evident in subjects from the United Kingdom (UK). DESIGN Retrospective cross-sectional study. PARTICIPANTS The study population comprised 74,459 subjects a...

backgounds: a number of studies have focused on the effects of season of birth, as an environmental factor, on embryonic development. methods: in a retrospective descriptive work, heights (crown to heel), weights and head circumferences of the full term, normal, and singleton newborn infants in hamadan city (west of iran) were collected from their randomly selected files in fattemieh hospital d...

We study the determinants of season of birth of the first child, for White non-Hispanic married women aged 25-45 in the US, using birth certificate and Census data. The prevalence of good season (quarters 2 and 3) is significantly related to mother's age, education, and smoking status during pregnancy, as well as to receiving WIC food during pregnancy and to pre-pregnancy body mass index. Moreo...