"... наличие соответствующего конского поголовья ..."
Ann Hyland. The Medieval Warhorse: From Byzantium to the Crusades.
An extremely rough guide to the European type (warhorse) is shown on the Bayeux Tapestry, a medium-sized animal of approximately 14.2-15 hh, with no particular distinguishing features, other than hinting it was fairly stocky. Evidence for the size I have given above comes from a multitude of Norman horseshoes. I measured a representative batch of these at the Museum of London, and compared the results with various sets of horseshoes I have at home from animals of similar height. In particular I measured those I used on an Arabian mare of 15.1 hh. One set of Norman shoes measured exactly the same as the mare's set, and many others were very similar. The size of the Norman shoes indicates the horses were not of any very great weight, as hooves of this sizerear shoes 4 1/2 in wide by 4 3/4 in long (112.8 by 119 mm); front shoes 4 1/2 in wide by 5 in long (112.8 by 127 mm) would not be up to the burden of a heavy horse, but are more closely akin to an animal in the region of 800 to 1.000 lb (360 to 455 kg). Such an animal is able to carry considerable weight.
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A European horse of the crusading era would have ranged from 15 to 15.2 hh and been of medium to heavy build, weighing in the region of 1,200 to 1,300 lb (545 to 590 kg) with some considerably lighter. The Turkmene horses would have weighed 800 to 900 lb (360 to 400 kg) with a similar height range, tending to the lower height, and the Arabians would have been smaller, well under 15 hh, and weighing around 700 to 800 lb (315 to 360 kg). Of course some animals in all categories would have been smaller, some larger, but these weights are taken from the size of the respective well-fed types today. My 15 hh Arabian stallion Nizzolan weighed around 840 lb (380 kg) when in endurance condition. His coarser built stable companion Katchina at 14.3 hh weighs considerably more. My Granicus, a partbred Arabian cross Standardbred, weighs 1,300 lb (590 kg), stands 16.1 hh and is much larger than sire or dam. Bearing in mind the preference for heavier-fleshed animals in the western sphere, and the lighter-framed and -fleshed Turkish/Arabian horses, and that this preference crosses the centuries as noted by Abou Bekr in the early fourteenth, Bertrandon de la Brocquière in the fifteenth, and Lady Anne Blunt in the late nineteenth centuries, suggests it applied to the era under discussion.65 In the ensuing wars Turkish and European equestrian practices were constantly put to the test, although the European cavalry ceased to be mounted on purely European stock and became more and more dependent on Turkish, Syrian and Egyptian animals, either purchased, stolen, or won as spoils.
Середина 13 века. Оценки по размерениям судов для перевозки лошадей.
These measurements show that early medieval destriers were of a very moderate size! I estimate the build as stocky, and a height range of between 15 and 15.2 hh. Of course other sizes occurred with exceptional horses as noted by Usamah ibn Munqidh.
Похожие данные приводятся и в The Medieval Horse and Its Equipment C. 1150-C. 1450 (Medieval Finds from Excavations in London). Лошади в средневековой Европе редко достигали 15 ладоней в высоту. Там же отмечается, что рост боевых коней 17 века был, в общем, схожим.
Кроме этого - "сирийский хват" копья использовался и мусульманами Леванта, а их лошади, насколько понимаю, "в среднем" принимаются более мелкими и легкими, чем кони европейцев. Плюс, насколько понимаю, крупного дестрие мог себе позволить не каждый рыцарь/латник.
Добавка. Если не ошибаюсь - византийских коней начала 14 века Феодор Палеолог полагает более мелкими, чем лошадей "латинян". Про "плохих" коней войска Витовта под Грюнвальдом писал Длугош. Ф. Руджиери (ориентируюсь на польский перевод, итальянского текста у меня нет) в 1568-м описал всадников ВКЛ, как имеющих коней более мелких и слабых, чем польские.
Опять вопрос. Упомянутое тут "соответствующее конское поголовье", которое позволяет использовать таран латинским хватом, это "сколько в ладонях и центнерах"?