Exotic Type and Horn Form in the Dutch Landrace Goat

Exotic Type And Horn Form In The Dutch Landrace Goat Raymond Werner, August 2008 Exotic Type And Horn Form In The Dutch Landrace Goat Raymond Werner, August 2008 Summary It has been firmly established that the Dutch landrace goat belongs to the Northern breed Group, being a Cold weather animal whose origin is rooted in the first phase of nomadic pastoralism towards the end of the Ice Age. The breed divides into several sub-groups, including one that is typical of the Northern Breed Group mentioned above, and another that, although also typically Cold Weather in appearance, has more of the breed type or “jizz” of the Pashmina Down breed groups of Asia (Central Asian Pashmina Down Breed Group and the Western Himalayan Pashmina Down Breed Group- see appendix 2) Seven horn forms have been identified in the breed to date. Three of these are typical of both the Northern Breed Group and the goats of Central Europe generally (dorcas, scimitar and moderate twist). Four are not (dorcas type with an incipient corkscrew, incipient corkscrew, Ammon-horn and straight-horned with a marginal twist), and may be thought of in terms of being ‘exotic’. They are characterised by twisting that forms an incipient spiral, and are thus related to corkscrew horns. Although a number of breed groups from the Mediterranean Basin, North and West Africa and the Middle East have horns with an incipient spiralling or corkscrew, only other Cold Weather breed groups have horns that are of the same basic type as those under discussion. The breed was reviewed historically by way of old paintings and drawings, and it was established that these exotic horn forms were present in the breed prior to attempts to save a remnant in the late 1950’s. This ruled out the possibility that the cashmere element was introduced only when the last surviving goats were in two zoos. The herd book was then perused to establish the type of the last two pure-bred Old Dutch goats. These were found to have been of distinctly Cold Weather type, to have had two types of exotic horn form, and to have bred a third type of exotic horn. It was thus concluded that the exotic horn type was present in the earliest days of the breeding programme. The next question related to whether or not the last surviving Dutch Landrace goats were not only typical of the breed, but also typified the possibility that it had been mongrelized at some time in the past. This would suggest that the Old Dutch goat had been mongrelized by foreign imports during a colonial phase. This could not be ruled out, there being no evidence one way or the other. However, yet another exotic horn form was identified, this being found in the Norwegian billy that was introduced into the breeding programme. We now had a situation in which both the Dutch Landrace and Norwegian Landrace breeds may exhibit an exotic horn form. This tended to rule out the possibility that the Old Dutch goat had been mongrelized with foreign 1 goat stock in the past, and the investigation became one of trying to establish why breeds belonging to the Northern breed group in the Netherlands and Scandinavia may have exotic horn forms whist those further west, and more specifically the British Primitive Goat, do not. The answer had to lie within the scope of people movement and migration within Europe, and one group of grassland nomads, the Battle-Axe people fitted the necessary criteria. The battle-Axe people introduced goats into Europe that had a similar horn form to those seen in the Dutch Landrace breed. Their migrations took them across the North European Plain, into Scandinavia by way of Sweden and Denmark, and west as far as the Netherlands and the Rhine. They did not reach the British Isles. If we attempt to link horn form with historical migration patterns, the Battle-Axe people are thus the prime candidates for introducing the exotic horn forms in question into some breeds of the Northern Breed Group but not into others. There are wider implications if this be the case, and namely that the eastern and western types of the Cold Weather goat may have a more complex history and relationship than has previously been thought. Introduction More than one ‘type’ of goat has been identified in the Dutch Landrace breed. Aside of the typical characteristics of the Northern Breed group (elsewhere called the ‘Nordic type’), there is some evidence of Swiss influence and what may be summarized as the “jizz” of a “cashmere” type. By jizz, we mean the overall feel and look, affecting conformation, style of the head, coat and horns. Most compellingly, there are differences in the form of the horns in Dutch Landrace goats that are not found in the British Primitive breed. These horn forms are quite exotic and otherwise not known in European goats generally. By way of elimination, we can link these to other Cold Weather breed groups world-wide, which brings us back to the ‘cashmere’ type’. In this study we will therefore attempt to define horn type generally and horn forms found in the Dutch Landrace goat more particularly; explore several theories as to how either the old Dutch goat or the remnant stock of the old breed only acquired such exotic horns; and theorize as to why such horn forms are found in the Dutch Landrace but not in the British Primitive goat. Lastly, we will review the implications for further breeding programmes. Defining horn form by defining horn growth The shape of the horn in goats may be interpreted at the result of the interaction between (a) variable growth rates and (b) positioning in relation to the skull (plane of the forehead). Here, it is suggested that there are 7 elements to this, each with varying degrees of tension in terms of the strength or weakness of their growth in relation to the other elements. 1. Growth away from the skull on a single plane, and without any tendency to curve on its axis or twist away from its axis in either direction. Such a horn would be a simple cone. 2 2. A tendency to curve on its axis with varying degrees of growth rate, so that the horn may form a weak curve through to a semi-circle. The term ‘scimitar’ is often used to describe one variant of this, along with ‘recurved’ or ‘sabre’. 3. A variable angle of emergence, as measured in relation to the plane of the forehead. This varies between high and low. Examples of variable angles of horn emergence are shown in illustration 12. The low angle of emergence shown at the top is typical of Mediterranean goats, whereas the high angle of emergence shown centre will typify goat breeds of the Alpine and Northern Breed Groups. 4. A tendency to turn or curve away from the horn’s axis so that there is an insipient spiral without a noticeable twisting. 5. Twisting around the horn’s axis in varying degrees, and dependent upon the growth rate in relation to 1 and 2. Horns of this type may twist into an open spiral or form a tight corkscrew if this growth is very fast. 6. The direction of the diverging or twisting mentioned in 4 and 5 in relation to the anterior-posterior axis of the body. If the left horn twists clockwise, then the horns are termed homonymous. If the left horn twists anticlockwise, the horns are termed heteronymous or perverted. The horns of the Markhor are heteronymous, whereas those of most twisted-horned domestic goats are homonymous. A simpler way of defining these horn types is to picture homonymous horns as turning or twisting away from the anterior-posterior axis of the body, whereas heteronymous horns turn or twist towards it. 7. The degree to which the horns diverge away from the skull or remain largely in parallel (see illustrations 9 and 25) A strong upward growth with no tendency to turn away from its axis is hardly known in goats, wild or domestic, but the strength of its growth away from the skull helps to define elements 2, 4 and 5. The goat pictured second from the right in illustration 28 has horns with strong straight growth and both a weak tendency to curve on its axis (2) and twist away from its axis in a heteronymous fashion (5). The classic scimitar horn is 1 in tension with 2, the strength of the growth of either defining the degree of curvature. Even so, the classic scimitar is quite rare, as there is usually an element of 4 involved, this dictating the direction of the final third of the horn away from its axis in either direction. A classic corkscrew, sometimes termed an ‘ordinary screw’ by way of reference to a screw in ‘screws and nails’, is a straight cone (1) with very tight twisting around its axis (5). A strong tendency to grow in a semi-circle (2), with an equally strong tendency to turn away from the horn’s axis (4) in a very tight twist (5) will produce a horn that closely resembles those of wild sheep, and in particular the Ammon horn. And so it goes on. It will be readily seen that the 7 elements, acting in varying degrees of tension through their strengths and weaknesses (growth rates in relation to each other) will produce infinite subtle and overt degrees of differences in horn form and type. Consequently, some recognised horn forms, such as ‘dorcas’, ‘corkscrew’ and ‘scimitar’, are merely expressions of a wider range of variation, with some forms merging into each other along a cline.

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