Tests and observations by week of age (w). CamerlinkIrene P. TurnerSimon BijmaPiter Elizabeth BolhuisJ. 2013 <p>Pigs (nā€Š=ā€Š480) were slaughtered at 23 w of age.</p>*<p>2-min Instantaneous scan sampling, generally for 6 h per day of observation per pig.</p>