- Atatürk Üniversitesi Ziraat Fakültesi Dergisi
- Vol: 1 Issue: 3
- MOR KARAMANLARDA KUYRUK KESMENİN ve BAZI KUYRUK KESME METOTLARININ BÜYÜMEYE ve MERİNOS AŞIMINA ETKİL...
MOR KARAMANLARDA KUYRUK KESMENİN ve BAZI KUYRUK KESME METOTLARININ BÜYÜMEYE ve MERİNOS AŞIMINA ETKİLERİ
Authors : Kemal Biyikoğlu, Oktay Yazgan, Ahmet Çelik
Pages : 0-0
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Publication Date : 2010-12-10
Article Type : Other
Abstract :SUMMARY EFFECTS OF DOCKING AND DOCKrNG METHODS ON THE GROWTH AND MATlNG ABILlTY OF MOR KARAMAN (BLACK KARAMAN) FAT-TAILED NATIVE SHEEP OF ANATOLlA Mor Karaman (Black Karaman) sheep are natiye animals of Anatolia; they form the quassi-totality of sheep in Turkey. The characteristics of this breed are: 1.- Cearse weel; 2.-Very big, large fat-tail. The animal saves part of the supernuous nutrients which he receives during the abudant periods and keeps them as fat in its tail for more severe seasons of the year. Consequently, in order to ameliorate the quality of the wool of the abovementioned stock, an intensive cross-breeding program with the use of Merino rams of Central Anatolia has been under app1ication since 1950. But owing to the fat-tail of Karaman ewes, the slender-tailed Merino rams are unabIe to jump on them; and as such, it becomes almost always necessary to recourse to the artificiaı insemination in the framework ai tbe cross-breeding program. Howevet, this artificial insemination turns out to be a very difficu1t as well as expensive method under hard conditions that prevail in most parts of Anatolio Sut in 'spite of the above-mentioned handicaps, the first worker of our team has done a more or less sııccessfuI experiment on Mor Karaman ewe lambs by cutting their tails at first and then mating them with merina rams. Howe-. '>er, sonn after the experiment same questions are raised as to - 1. The docking of the fat-tailed Karaman lams; and 2. the effects of docking and docking methods produced on the rate of growth and mating abilit)' of Mor Kara man ewes with merino ram lambs. There different implements have been used in the docking methods:- 1. Burdjzzo forcepts and a knife (for cutting the taiI); 2. A mbber ring (elastration ring); 3. A string or cord (used for tying the tail). Docking the animals with burdizzo forceps and a knife was veryeasy and practicable. The tail was squeezed with burdizzo forceps between the second and the third node of the tail-bone, !J,nd than was cut with a knife. Wouıids recovered in about 8 days. Application of the rubber ring was easy, too. Tails that had been squeezed with rubber rings, eventually broke down and dropped by themselves ten or fifteen days after the application of the mbber ring; and wounds located in places of articulations, recovered completely, in about twenty-one days after the application of the rubber ring. The third but the worst and most painful of aU the three docking methods was the method where tails were tied and squeezed with a cord or string, in artinılation places. After the tying tails 97 swelled and anİmals la id down, lost their appetites, owing to the pain, till after a fortnight when tails were separeted from the body by amputation. in every of the three docking methods the following order was observed:- i. For every method, newly-born eight ewe lambs and eight ram lambs of Morkaraman stock were used as experiment animals. 2. The ewe and ram lambs used, aged between one and three days; 3. Against 24 ram lambs and 24 ewe lambs that underwent the docking procedure, an equal number of male and female lambs were kept as control group for corİıparison purposes. Rate of Growth In order to find out the effects of every method produced on the rate of growth, lambs were weighed at an interval of fifteen days, as from the date of their birth, until the end of the experiment. Besides, even after the animals had beeome twenty-one days old, measurements of different parts of their bodies were taken in every fortnihgt. Weighing and measurement proeedures eontinued until the end of the experiment, i. e. until 112 th day. i. Thus, we can analyse from the weight increase point of view the effects of docking and docking methods on the rate of growth, in this way : i. with the exception of the cordappIied group lambs, the average gain of ewe lambs was generally less than 98 th ose of the ram lambs, and the effects of docking and docking methods 00 their weight İncrease, too, were hardly notieeable; they were significantly more on the ram lambs, so mueh so that, by various different method appIications, important differences were obser vable between the taiJed and the docked ones. 2. In comparİson to the control group and the other two docking method groups, in the first twenty-one-day period of the experiment, the greatest gain, both in male and in female lambs, was observable in the group where the cut of the tail was done with burdiııo foreeps. 3. With the exception of the cordapplied group, the average gain (5.10 Kg.) of the other two groups was more than that of the tailed (control) group (4,71 kg.). 4. The least gain was observable in those whose tails were squeezed with a cord. ıl. As from the twenty -fİrst day, until the one hundred and twelvth day, i,e. until the weaning period or durİng the ninty-one days of the second period of the experiment, the greatest gain was again at the burdiızo group, whilst the least gain was again observable in the eord-applied group. Thus, the results in the second or completing period were the same as those ofthe fİrst 21-day period. ııı. During the experimental period of one hundred and twelve days, the burdizzo group had a gain more than the remaining groups, i.e. the control group and the remaining other two groups; whereas the cord-applied group had the least gain. Statistically, differences ın live weight gap were singificant. There were no dilIerences between the ewe lambs of the (tailed) control group and those of the docked (group). Measurement!:. Effect of docking and docking methods produced on the body growth, i.e., on body length, on withers height, on heart gjrth, on width and depth ofchest, were examined one by one, with the following results: 1. Docking and docking methods had little effect 011 the ewe lambs from the increase poin t ofview of body measurements. How ever, the ewc lambs of the cord-applied group showed a slower development in their mesurements. 2. In ram lambs of all the doeked groups. the most conspicuous elIect of doeking and docking methods was seen on the chest dept. In comparison to control group, chest-depth in docked ones, was more developped; width of chest, hearth girth, withers height, length o f body, width and heigbt increased as well, in the docked ram lambs. Statisticaııy , however, these were insigni ficant. Mating ability Doeking had eaused a confortable approaeh of merinos ram with M orkaraınan ewes at moments of mating and ruled out insemination problems.84,3% of all the doeked ewes produeed lambs under this normal condition.Keywords :