ut land ▁the ▁bre ed ▁could ▁be ▁light ▁grey , ▁dark ▁grey ▁or ▁black ▁pied ▁with ▁up ward ▁cur ving ▁horn s . ▁The ▁first ▁her d book ▁published ▁in ▁ 1 8 8 1 ▁had ▁a ▁small ▁da iry ▁type ▁and ▁a ▁larger ▁be ef ▁type . ▁The ▁da iry ▁c ows ▁were ▁small , ▁aver aging ▁ 1 2 0   cm ▁high ▁and ▁we igh ing ▁ 3 5 0   kg , ▁producing ▁between ▁ 8 0 0 ▁and ▁ 1 0 0 0   kg ▁of ▁milk ▁per ▁la ct ation . ▁ ▁In ▁the ▁first ▁half ▁of ▁the ▁ 2 0 th ▁century ▁the ▁bre ed ▁was ▁extens ively ▁crossed ▁with ▁Dutch ▁black ▁and ▁white ▁cattle ▁to ▁boost ▁milk ▁production . ▁By ▁ 1 9 4 9 ▁Dutch ▁cattle ▁and ▁cross es ▁were ▁accepted ▁into ▁the ▁her d book ▁and ▁the ▁name ▁was ▁changed ▁to ▁Dan ish ▁Black ▁and ▁White ▁C attle . ▁In ▁ 1 9 5 5 ▁the ▁last ▁pure bre d ▁young ▁b ull ▁was ▁exhib ited . ▁Since ▁ 1 9 8 7 ▁the ▁J ut land ▁bre ed ▁has ▁been ▁re construct ed ▁using ▁un register ed ▁stock ▁from ▁far ms ▁which ▁had ▁avoided ▁crossing ▁their ▁cattle ▁with ▁Dutch ▁cattle . ▁The ▁modern ▁c ows ▁are ▁typically ▁ 1 3 2   cm ▁tall ▁at ▁the ▁with ers ▁and ▁we igh ▁ 5 5 0   kg , ▁while ▁b ull s ▁are ▁typically ▁ 1 4 5   cm ▁tall ▁and