Dear Friends, we will speak of Cecoslovakian Wolf-Dog with long hair.These are individuals with a abnormal coat length in general and the abundant tufts of hair in specific areas (hocks , the tip of the ears,) that are normally short-haired . Those with long hair sometimes have the morphological caracteristic and caracter in common besides the anomaly of the coat, as a foxy "snout"in puppies and a particulary docile temperament and gentle as an adult. The CZW with long hair presents to all effects an eliminating fault according to the standard, these subjects have a long — haired type phenotypic uniformly detached from the subjects of correct type For some time we have been looking transmission of this morphological fault, and we now know that it is a recessive defect, the subject who has two copies of the mutation (l/l) presents the long —haired phenotype while that one which have only one (L/l) has a normal phenotype as the subjects in which the mutation is absent (L/L). So are the couplings between carriers (L/l) that gives birth to certain subjects with long hair inside of the litter. Thanks to the easy with which you can recognize these subjects, several carriers have been identified since a long time. Especially in italian lines several studs, among the most prolific, were carriers of this feature, therefore breeding close to these lineage expose to the long hair risk.
For years it was believed that the defect was almost exclusively fault of these lines but some emblematic cases have revealed how this mutation is potentially present in many lineages of some progenitor, and that in some of these, its presence, is more concentrated.
Today we can say that the presence of this mutation dates back to the subject F1 Kazan and than probably in the German Shepard Boyar vom Schottendorf. All subjects with long hair have at least 2 brances arising from Kazan, of which one on the mother's side and one on the paternal side. In the Czech lines and in the Italian founder lines (based precisely on Czech lines) Kazan is present also more than two times. In the Slovak lines this mutation appears to be completely absent, because in most of the lines Kazan is not present, because the only lineage deriving from Kazan (the one of Tambury Z Rosikova )is surely descended exempt ,seen the multiple intersection (at risk )and no long hair puppy has born.
After the first edition of this article, thanks to the efforts of Ing. Daniela Cílová, have been tested many subjects at the University of Prague, and the outcomes of some of these tests showed that the stud Enor Maly Bysterec was definitely carrier, although not related to Kazan. This leads us to suppose that a further copy of the mutation is present in the population from pre-Kazan hybrid lines, more likely to be Xula z Ps or Luna z Ps.
For a long time it is known the gene FGF5 (Fibroblast grow factor 5) as a regulator of the length of the hair in mammals. Some studies in recent years have highlighted the existence of allelic variants that in dogs are responsible for different phenotipes, related precisely to the length of the hair. In particular, one of these has been associated with certainty to the phenotipes in long haired German Shepard, so that at least from a couple of years is available the test for this breed. Recently the laboratory ANTAGENE added also tests for the Czechoslovakian Wolf Dog, from this we deduced that they had carried out tests to confirm that the mutation was the same. Unfortunately not been able to trust French genealogies, we have, with the invaluable help of a breeder, made a trial test on a bitch normal phenotype but carrier, and a son of a long-haired phenotype. The result of the tests, carried out by ANTAGENE, in the dark (without knowing the phenotipes) has had a reasonable outcome being that the bitch was etherozigous (L/l) for the mutation ,and the son homozygous (l/l).
The CLC-Italia.it database was therefore set up to collect and file the information about the long —haired in order to provide help breeding. ln the section DATI>INDICI (of each dogs schedules) you can now find the results of the test (if available) of the subject.
There are four types of information: F — Free (genetic tested) C — Carrier (genetic tested) PL —Long Coat (on the basis of phenotypic and/or genetic) CPR (Carrier on the basis of offsprings with long coat phenotype).
It is important the right approach when you have a new selection tool for breeding. We have repeatedly advised caution, with the selection of mutations of diseases, such as Pituitary Dwarfism and Degenerative Myelopathy. Carefully understood as not potentially exclude any reproducer, but only at risk combinations, and that in any case the total exemption of these mutation can not be the purpose to reach, with a view of judicious breeding! This is because the reduction in breeding combinations leads to erode the Genetic Variability and in parallel can lead to increase in inbreeding at population level.
In the case of this mutation, caution that we must place is a hundred times greater, as we are not facing a disease or defect that have an impact on the quality of life of the animals and the people that look after. The impact of Long Hair Phenotype is purely qualitative and economic, as defect eliminatory by standard and a puppy with a similar Phenotype can not be sold as a correct Czechoslovakian Wolf Dog. Beyond the coat, those individuals are healthy and can fulfill the role of companions like a Czechoslovakian Wolf Dog with correct coat. From a morphological selection point of view you can also take an advantage of this test. It is that most of the carriers has a rich coat phenotype (but always in standard), you can search heterozygosity for morphologically rich coat as quality (predictable) phenotype in the progeny.
So any aggressive strategy towards the mutation or the pursuit of full exemption from it, are not desirable But I push myself further: ARE TO BE CONDEMNED!
To erode a minimum portion of genetic variation for such mutation it is an absolute idiocy from the point of view of breeding! So my personal advice is to make a conscious a judicious use of this tool. The test is available from ANTAGENE, LABOKLIN, SLOVGEN, GENEFAST and other more.
Author: Alessio Camatta
English translation: Mario Noce (Lupi di Monte Morello Kennel)
Articolo inserito il 17/03/2017