factors associated with mortality from birth to yearling age in moghani lambs

investigation of factors which affect lori-bakhtiari lambs mortality from birth to weaning

the aim of this study was identification of important factors and their effects on mortality of lori-bakhtiari lambs from birth to weaning. the data set used for statistical analysis were collected from 4991 lambs born between 1370 and 1384 in flock at lori-bakhtiari sheep breeding station. data was modeled using logistic regression. mortality variable as dependent and ewe weight at mating, ewe...

NEONATAL MORTALITY IN RELATION TO BIRTH WEIGHT

730 low birth weight (LBW) neonates and 1460 controls were selected from 13,123 neonates born from October 1988 to June 1989 in 17 hospitals and maternity units in Tehran, and were compared for mortality in the first seven and up to 28 days of life (early neonatal period). In this study all low birth weight newborns are divided according to four sub-groups of birth weight, and the mortalit...

Morbidity and mortality associated with older maternal age at birth

Maternal Risk Factors Associated with Low Birth Weight

Background and purpose: Since a large proportion of fetal mortality is associated with low birth weight (LBW) and considering the fact that fetal development is a vulnerable process influenced by maternal risk factors, this study examined some maternal risk factors associated with LBW infants.  Materials and Methods: This cross-sectional study was conducted based on the medical records o...

Socioeconomic Factors Associated With Mortality Rate Caused by Severe Stroke

Background: Stroke is one of the most important causes of disability-adjusted life years lost. Low socioeconomic status is associated with increased stroke-related morbidity and mortality. Objective: This study aimed to investigate in-hospital mortality rate caused by severe cases of ischemic and hemorrhagic stroke and its relationship with patients’ socioeconomic status. Materials and Method...

Study of Factors Affecting Longevity and Survival of Iranian Guilan Sheep Using Linear and Non-Linear Models

The objective of this study was to evaluate non-genetic factors affecting longevity and survival of Guilan sheep from birth to yearling. Longevity and survival records of 41037 lambs born from 496 rams and 10256 ewes of Guilan sheep were analyzed using linear and Weibull models. Results indicated that the overall mean of longevity was 1260.84 days. The fixed effects of flock, dam age, sex, year...