Nutritional evaluation of a fungal yeast probiotic fortified with natural antioxidants on performance of sheep. 2- body weight gain, feed conversion efficiency, carcass characteristics and body composition of two local breeds of sheep raised under two different climatic conditions
Abstract: The nutritional effect of the new locally-made probiotic (Effective Microorganisms with Medicinal Herbs - EMMH) was studied on growth performance, carcass characteristics and body composition of two local breeds of sheep (Rahmany and Farafra) raised under two different climatic conditions. The first feeding trial was carried out on 32 heads of male Rahmany lambs raised in El-Serw Experimental Station (Domitta Governorate-North Western Egypt) and the second trial was carried out on 24 heads of male Farafra lambs raised in Mallawy Experimental Station (El-Minya Governorate - Upper Egypt). Lambs of both breeds were of three months old with an initial average body weight of 18.04 ±0.53 Kg and 18.53±0.11 Kg for Rahmany and Farafra lambs, respectively. The period length of the first trial was 168 days and the second one 126 days, during which animals were divided into four similar groups, where each group was individually fed on one four experimental diets supplemented with EMMH at 0, 0.3%, 0.4% and 0.5% of the concentrate feed mixture (CFM). The daily feeding level for all experimental groups were as follows: Rahmany2.5% of body wt. CFM + 1.0% body wt. Berseem hay + ad lib. chopped Rice Straw. Farafra: 3.0% of body wt. CFM + ad lib. chopped Rice Straw. At the end of each feeding trial, three representative lambs of each group were slaughtered to evaluate their carcass characteristics and body composition. The results indicated that the daily voluntary intake of rice straw was improved (P<0.05 and P<0.01 for Rahmany and Farafra lambs. resp.) with diets contained EMMH. Daily water consumption was decreased (P<0.01) by both breeds of lambs with feeding diets contained EMMH. Average daily gain (ADG) and feed conversion efficiency were improved (P<0.01) for both breeds with feeding diets contained EMMH and the effect on weight gain was more pronounced with increasing the supplementation level of EMMH. In comparison with control diets. ADG and feed conversion were increased by 30% and 12% for Ralunany fambs and 47% and 19% resp. for Farafra lambs, respectively with feeding diet contained 0.5% EMMH. The dressing percentage of slaughtered animals was improved by 10% for Rahmany and 6.6% for Farafra lambs fed 0.5% EMMH diet than those fed control diets, however edible offals relative to empty body weight showed comparable values among groups for the two experimental breeds. Non-edible offals and trimmings calculated relative to fasting body weight showed significant decrease (P < 0.01) for lambs fed EMMH supplemented diets than control for the two breeds of lambs. Knife separable fat calculated relative to carcass weight was lower (P<0.05) in Rahmany lambs fed EMMH supplemented diets than control. while Farafra slaughtered lambs showed comparable values of separable fat among experimental groups. The eye muscle area was increased (P < 0.05) ullanlbs fed Etv1MH supplemented diets for both breeds (Rahmany and Farafra) and a remarkable increase of eye muscle area was noticed with increasing the EMMH supplementation level Chemical analysis of Longissmus dorsi muscle ribs showed higher (P<0.01) protein and lower (P<0.01 ) extracted fat contents for both breeds of sheep fed Etv1MH supplemented diets, while moisture and ash contents were not differed among groups for both Ralunany and Farafra slaughtered lambs. It is concluded that, the tested probiotic EMMH was useful in improving body weight gain; feed conversion efficiency and carcass properties of growing local lambs and the best results were achieved with 0.5% supplementation level of EMMH
Keywords: Probiotic, antioxidants, Rahmany lambs, Farafra lambs, carcass characteristics.
Publication year 2011
Pages 379-391
Availability location معهد بحوث الانتاج الحيوانى - شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
serial title Egyptian Journal Nutrition and Feeds
ISSN 1110-6360
Author(s) from ARC
External authors (outside ARC)
    علاء الدين يحيى البدوى المركز القومى للبحوث
Agris Categories Animal physiology - Nutrition
AGROVOC
TERMS		 Antioxidants. Carcass composition. Drug plants. Microorganisms. Probiotics. Sheep.
Proposed Agrovoc Farafra lambs;Rahmany lambs;
Publication Type Journal
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