caa a22 4500 397567855 CHVBK 20180308164833.0 cr unu---uuuuu 161202e199610 xx s 000 0 eng 10.3382/ps.0751192 doi (NATIONALLICENCE)oxford-10.3382/ps.0751192 Short-Term Selection for Four-Week Body Weight in Japanese Quail [Elektronische Daten] [N. B. ANTHONY, K. E. NESTOR, H. L. MARKS] Japanese quail have been utilized as a research animal to establish genetic relationships that may be present in other poultry species. In this presentation, short-term selection experiments were reviewed. Selection intensity appeared to be the most effective in improving BW when selection experiments were compared on a response per generation basis; however, when generation interval was reduced, the response per year was superior despite lower selection intensities for lines selected the same number of generations. Correlated responses over 30 generations of divergent selection for 4-wk BW indicated that selection had a negative effect on fitness traits, including egg number and fertility. Traits such as follicle and egg weight and BW at the beginning of and after a 120-d laying period were positively correlated with BW during the growth period. The early response of quail lines selected for increased BW at 10, 17, 28, and 40 d of age indicate that the later selection is applied the greater the selection response at maturity. In fact, lines selected at young ages were competitive with late-selected lines only to the point at which selection occurred. © 1996 Poultry Science Association, Inc. Breeding and Genetics nationallicence Japanese quail nationallicence divergent selection nationallicence body weight nationallicence growth curves nationallicence selection response nationallicence ANTHONY N. B. aut NESTOR K. E. aut MARKS H. L. aut Poultry Science Oxford University Press 75/10(1996-10), 1192-1197 0032-5791 75:10<1192 1996 75 ps https://doi.org/10.3382/ps.0751192 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0751192 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- ANTHONY N. B. aut NATIONALLICENCE 700 1- NESTOR K. E. aut NATIONALLICENCE 700 1- MARKS H. L. aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/10(1996-10), 1192-1197 0032-5791 75:10<1192 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford