Dikmen S, Ustuner H, Turkmen I I, Ogan M
Faculty of Veterinary Medicine, Department of Animal Science, University of Uludag, 16059 Bursa, Turkey.
Trop Anim Health Prod. 2009 Apr;41(4):485-91. doi: 10.1007/s11250-008-9212-8. Epub 2008 Aug 1.
This experiment was conducted to investigate the effect of cafeteria (CF) and conventional (CN) feeding systems on feed intake, feed preferences with respect to voluntary feed source intake, feed conversion rate (FCR) and fattening performance of native Awassi lambs. Sixteen, 3 month old male lambs were used and kept individually for 70 days. Lambs in CF (n = 8) were offered to consume the main ingredients of barley, soybean meal (SBM), sunflower seed meal (SFM) and alfalfa straw, separately, while lambs in CN (n = 8) were fed with a concentrate feed containing 11.34 MJ/kg ME, 17.53% crude protein with the mixture of the same feed sources and alfalfa straw. The initial and final live weights of lambs were similar among groups (P > 0.05). Daily voluntary intake of ash, fat and neutral detergent fiber (NDF) consumptions among groups were quite different during the experiment (P < 0.001). Neither biweekly nor total results of voluntary protein intake between groups were not found statistically significant (P > 0.05). From beginning to the end of the study, the proportional barley intake increased 34 to 43% but reduced for SBM intake from 37 to 23% for the lambs in CF. On the other hand, the SFM intake of lambs did not changed significantly during the experiment and ranged between 2-5%. Lambs in CF did not consume SFM to meet their protein requirement and had 12.5% better total FCR result than the lambs in CN (6.86 and 7.84, respectively) (P > 0.05). The difference of average DWG, total live weight gain, final live weight of lambs in groups were similar (P > 0.05). In conclusion, Awassi lambs in CF can select a diet matching their nutritional requirements from a group of feed sources in response to their growth period when compared to CN system and better FCR result might help to decrease the feed expenses for fattening of native Awassi lambs.
本实验旨在研究自助式（CF）和传统式（CN）饲养系统对本地阿瓦西羔羊采食量、自愿采食饲料来源的偏好、饲料转化率（FCR）和育肥性能的影响。选用16只3月龄雄性羔羊，单独饲养70天。CF组（n = 8）的羔羊分别提供大麦、豆粕（SBM）、葵花籽粕（SFM）和苜蓿草的主要成分，而CN组（n = 8）的羔羊则饲喂含有11.34 MJ/kg代谢能、17.53%粗蛋白的浓缩饲料，饲料来源与苜蓿草混合。各组羔羊的初始和最终体重相似（P > 0.05）。实验期间，各组之间每日自愿摄入的灰分、脂肪和中性洗涤纤维（NDF）消耗量差异很大（P < 0.001）。两组之间每两周的自愿蛋白质摄入量以及总结果均未发现统计学显著差异（P > 0.05）。从研究开始到结束，CF组羔羊的大麦摄入量比例从34%增加到43%，但豆粕摄入量从37%减少到23%。另一方面，实验期间羔羊的葵花籽粕摄入量没有显著变化，在2 - 5%之间。CF组的羔羊没有通过采食葵花籽粕来满足其蛋白质需求，其总FCR结果比CN组的羔羊好12.5%（分别为6.86和7.84）（P > 0.05）。各组羔羊的平均日增重、总体重增加量、最终体重差异相似（P > 0.）。总之，与CN系统相比，CF组的阿瓦西羔羊能够根据其生长阶段从一组饲料来源中选择符合其营养需求的日粮，更好的FCR结果可能有助于降低本地阿瓦西羔羊育肥的饲料成本。
