نتایج جستجو برای: age at maturity
تعداد نتایج: 4140782 فیلتر نتایج به سال:
The interrelationships among five measures of physiologic maturity for 50 French-Canadian girls are evaluated--menarche, peak height velocity (PHV), 75% skeletal maturity, appearance of the ulnar sesamoid, and 90% dental development. The mean ages of occurrence of the events differed significantly (P less than 0.01). Menarche and 90% dental maturity showed the least variability. Ages of PHV, me...
1Centre for Integrative Genetics (CIGENE) and Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, NO-1432 Ås, NORWAY 2Department of Biology, University of Turku, FI-20014, FINLAND 3Norwegian Institute for Nature Research (NINA), NO-7485 Trondheim, NORWAY 4Nofima AS, PO Box 210, NO-1431 Ås, NORWAY 5Natural Resources Institute Finland, Oulu FI90014, FINLAND 6Ins...
............................................................................................................................ 2 Introduction ...................................................................................................................... 3 Materials and Methods ..................................................................................................... 6 Northern (...
We develop a model for somatic growth in fishes that explicitly allows for the energy demand imposed by reproduction. We show that the von Bertalanffy (VB) equation provides a good description of somatic growth after maturity, but not before. We show that the parameters of the VB equation are simple functions of age at maturity and reproductive investment. We use this model to show how the ener...
Two experiments were conducted to determine the effect of carcass maturity on meat palatability using concentrate-fed cattle of known history and to determine the relationship of chronological age to carcass maturity scores. Yearling heifers (n = 28) and 2-yr-old cows (n = 25) of similar breed groups were fed a high-energy-density diet for 90 d before slaughter. Longissimus muscle Instron peak ...
This study examined the association between physical activity (PA) and bone mineral content (BMC; gram) from middle childhood to middle adolescence and compared the impact of vigorous-intensity PA (VPA) over moderate- to vigorous-intensity PA (MVPA). Participants from the Iowa bone development study were examined at ages 5, 8, 11, 13, and 15 years (n = 369, 449, 452, 410, and 307, respectively)...
Direct and correlated responses to selection on age at physiological maturity in Drosophila simulans
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