Among-breed estimates of heritability for birth weight, weaning weight, and mature cow weight
نویسندگان
چکیده
منابع مشابه
Birth Weight Weaning Weight Yearling Weight Scrotal Circum
Understanding and using EPDs continues to be a popular topic among cattle producers because of their effectiveness when properly used in genetic selection. Use of EPDs, as with many other standard management tools, is not required to survive in the beef cattle business, but those who do will excel in terms of genetic improvement. With so many traits to monitor in a cow herd, producers should no...
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 کاملPatterns 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 کاملParameter estimates for direct, maternal, and grandmaternal genetic effects for birth weight and weaning weight in Hereford cattle.
Birth and weaning weights adjusted for age of dam from four lines of Hereford cattle were analyzed to determine the relationships among grandmaternal, maternal, and direct genetic effects. Three lines were selected for 1) weaning weight (WWL), 2) yearling weight (YWL), and 3) an index of yearling weight and muscle score (IXL). The fourth line was an unselected control line (CTL). Numbers of obs...
متن کاملEstimation of breed-specific heterosis effects for birth, weaning, and yearling weight in cattle.
Heterosis, assumed proportional to expected breed heterozygosity, was calculated for 6834 individuals with birth, weaning and yearling weight records from Cycle VII and advanced generations of the U.S. Meat Animal Research Center (USMARC) Germplasm Evaluation (GPE) project. Breeds represented in these data included: Angus, Hereford, Red Angus, Charolais, Gelbvieh, Simmental, Limousin and Compos...
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ژورنال
عنوان ژورنال: Kansas Agricultural Experiment Station Research Reports
سال: 1994
ISSN: 2378-5977
DOI: 10.4148/2378-5977.2094