Sheep farming keeps an important put in brand new Algerian farming and you can savings; they holds area of the standing throughout the herd and that is the newest leading seller out of meat. This has been estimated within 20 million brains, certainly hence 80% was delivered on northern section of Algeria (Kerboua ainsi que al 2003).
Weight and you may development are important on the full output, especially when the new chicken production ‘s the main purpose; a top beginning weight allows the pet to help you really start their community, and you will expand easily before and after weaning predisposes, so you can a far greater infection opposition and also to reach rapidly puberty and you can readiness (Sulieman et al 1985).
These characteristics give an explanation for importance of the fresh new Ouled Djellal reproduce when you look at the Algeria, accounting having 61% of the national sheep energetic (Dehimi 2005). It is a completely light sheep, having a fine tail and you can wool, getting together with puberty at the period of 8 to 10 days, the initial calving at the 15 days dated plus the lamb’s weight within delivery means 3.fifty Kilogram (Chellig 1992). The newest weaning years is approximately 3 months (Dekhili and you will Mahnane 2004),with a beneficial fatting chronilogical age of sixty to help you 70 weeks, and you will the typical each day acquire away from 150 in order to 2 hundred grams for every single time (Chellig 1992).
The fresh deficiency of penned studies to your Ouled Djellal growth performances, and also the attract taken to it breed encouraged me to make this research, whoever main purpose were to studies the fresh new lambs’ increases, while in the fall and you will spring, whenever you are looking at additional factors impacting growth variations like gender, delivery particular and you can age the mother.
Studies urban area and you can period
The research are held approximately Chlef; an area located in the North-West of Algeria and layer whenever 4700 km?. They represents an enormous Neogene basin, bordered into the northern by the Dahra mountains as well as on this new Southern area of the Ouarsenis slopes. This area is actually characterized by a couple of bioclimatic areas; the new partial-arid prevalent from the central and you can south region, and sub-moist throughout the north region, which have the typical annual rainfall from 300 mm/12 months and a suggest temperatures of seven C throughout cold temperatures and you will 37 C during the summer (ANATA 1996). Animals in the near order of Chlef stays mostly predicated on sheep, and you can farming reigns over more than creation of beef and you can wool. Sheep agriculture was sedentary, mostly concentrated regarding plains together with all the way down valleys.
The analysis taken place during the months from 2010 to 2014, and in it a sample away from 113 lambs of your own Ouled Djellal’s breed together with 51 lambs created throughout autumn and you will 62 lambs born throughout the spring.
Animal management and you will feeding
The brand new pet found in this study was was able under semi-extreme reproduction system, that have a serving program predicated on grazing until June, and you will cereal stubble in the summer. During dinner lack months and you will harsh weather conditions, the fresh moms and dads had been kept in barns and fed with natural existe and you will wheat-straw, supplemented by barley and you will wheat bran concentrate,nutrition. Lambs created have been remaining due to their moms and dads getting dam’s milk,certain fodder combination and you will twice a day fresh-water.
Analysis range and you can read items
Once-born, brand new lambs was indeed understood having ear canal tags including the time of birth, new animal’s mommy and a detection amount.
So you’re able to display the organization shows, lambs have been considered in this 10 days just after delivery, then a regular consider (loads and you may mediocre everyday increases) is performed within decades 0 in order to 3 months (out-of delivery in order to weaning). Lambs’ loads have been consumed in this new early morning toward an empty stomach, having fun with a leading reliability balance and taking in consideration this new lambing year, brand new intercourse, the newest delivery variety of therefore the chronilogical age of the mother. This latter factor received following the pearly whites examination was put into cuatro a long time: quicker or equivalent to three-years, three to six ages, 6 to nine age meilleures applications de rencontres lesbiennes and more than nine ages.
