Sheep agriculture provides a valuable input new Algerian agriculture and you will benefit; they keeps area of the condition from the herd and that is the new best vendor away from meat. It’s been projected during the 20 billion brains, certainly hence 80% was delivered regarding the northern part of Algeria (Kerboua mais aussi al 2003).
Pounds and you may gains are important on the total efficiency, especially when the newest meat design is the main purpose; a high birth weight lets the pet so you can better site de rencontres pour cÃ©libataires par Ã¢ge begin his field, and you will expand quickly both before and after weaning predisposes, in order to a better sickness opposition and also to arrive at easily puberty and you may maturity (Sulieman et al 1985).
These features give an explanation for need for this new Ouled Djellal reproduce in the Algeria, accounting getting 61% of one’s national sheep productive (Dehimi 2005). It is a completely white sheep, which have a superb end and you may wool, getting adolescence within chronilogical age of 8 to help you ten days, the first calving at the 15 months old therefore the lamb’s lbs in the beginning is all about step three.fifty Kilogram (Chellig 1992). New weaning years is just about ninety days (Dekhili and you can Mahnane 2004),that have an excellent fatting age sixty so you’re able to 70 days, and you can the average day-after-day acquire off 150 in order to 2 hundred grams for every date (Chellig 1992).
The newest deficiency of penned analysis for the Ouled Djellal growth shows, while the notice brought to it breed motivated me to perform this research, whoever main purpose were to research the brand new lambs’ increases, during the fall and you may spring, if you’re taking into consideration additional factors affecting progress variations such as sex, beginning type of and you can chronilogical age of the mother.
Research area and you can period
The analysis try presented in the near order of Chlef; a place found in the North-To the west of Algeria and you may level up to 4700 kilometres?. It represents a big Neogene basin, bordered to the north by the Dahra slopes and on the brand new Southern by Ouarsenis mountains. This place are characterized by a couple of bioclimatic areas; the new semi-arid prevailing on the central and you can southern area area, and sandwich-humid regarding northern area, which have an average annual rain from 300 mm/year and you can an indicate heat out of eight C throughout the cold temperatures and you can 37 C during summer (ANATA 1996). Animals around Chlef stays mainly centered on sheep, and you can agriculture reigns over over creation of chicken and you can fleece. Sheep agriculture try sedentary, generally concentrated from the flatlands and also the lower valleys.
The study happened for the period away from 2010 to 2014, and you can inside it an example regarding 113 lambs of your own Ouled Djellal’s reproduce together with 51 lambs produced throughout the fall and you can 62 lambs born during spring.
Animal management and you may serving
The pets found in this research was in fact handled below partial-extreme breeding system, that have an eating program centered on grazing up to Summer, and cereal stubble in the summertime. During the dinner lack months and you may harsh climate, the fresh new parents was basically kept in barns and you will given which have absolute existe and you can wheat-straw, supplemented from the barley and you will wheat bran focus,vitamins. Lambs born was basically left the help of its moms and dads acquiring dam’s dairy,particular fodder mixture and you may two times a day water.
Study range and you can read activities
Once born, the fresh new lambs was indeed identified having ear canal labels including the time off delivery, the fresh animal’s mom and you will a detection number.
So you’re able to screen the organization performances, lambs was indeed considered within ten instances just after delivery, upcoming a weekly weighing (weights and mediocre every single day growth) was did within years 0 so you can 90 days (out of delivery so you’re able to weaning). Lambs’ loads had been consumed the brand new day to the a blank belly, playing with a top accuracy harmony and ingesting idea the latest lambing season, the new gender, brand new beginning method of and also the age mom. This latter factor obtained adopting the pearly whites examination is put into 4 age range: quicker otherwise comparable to three years, 3 to 6 many years, six to nine years and most 9 ages.