Heterosis for hatch weight and body weight gain in outcrossed native chickens of Nigeria under savanna conditions
نویسندگان
چکیده
منابع مشابه
Patterns of Maternal Weight Gain During Pregnancy and Birth Weight
Anthropometric parameters are an important indicator of health and nutritional status comprising the whole span of mans life. However, they are not of the same degree of simplicity and sensitivity in assessing the public health status. During recent decades many studies have attempted to examine the relationships of these measurements in order to present simple alternatives for similar purposes...
متن کاملPatterns of Weight Gain and Birth Weight Amongst Indian Women
Background: The timing of maternal weight change in pregnancy may be an important determinant of birth weight. The objective of this study was to measure weight gain patterns from early pregnancy until delivery, and to examine the relationship between prenatal weight gain and low birth weight. Methods: A total of 500 pregnant women within 15-20 days of conception, with confirmed pregnancies and...
متن کاملGenetic Parameters for Body Weight and Laying Traits in Mazandaran Native Breeder Hens
Heritability, environmentaland genetic correlations between body weight at hatch (BW0), eight (BW8) and twelve (BW12) weeksof age, body weight at sexual maturity (BWM), age at sexual maturity (AFE),the weight of the first egg laid by the hen (EWM), the mean egg weight from 28 to 32 wks (EW28-32) and egg numbers (ENs) were estimated by the restricted maximum likelihood method under an animal mod...
متن کاملPrepregnancy Body Mass Index and Pregnancy Weight Gain in Rural Regions of Guilan Province, Iran
Maternal nutritional status and weight gain throughout pregnancy affect the outcome of pregnancy. The objective of this study was to determine prepregnancy body mass index and total weight gain during pregnancy in women from rural areas of Guilan province, Iran. Prenatal and obstetrical records of 480 pregnant women who attended rural health centers between 2002 and 2003 including prepregnancy ...
متن کاملResponse to selection for body weight and egg weight in chickens.
W E L L conducted selection experiments are useful in testing the validity of modern selection theory. Observed genetic changes from selection frequently show poor agreement with expectation. The relationship of selection to the genetic variance composition of a population, to correlated responses, to plateaued populations and to selection limits are problems not yet well understood. This study...
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ژورنال
عنوان ژورنال: Nigerian Journal of Animal Production
سال: 2020
ISSN: 0331-2062
DOI: 10.51791/njap.v45i2.510