滩羊冬羔春羔生产效果对比试验

为了探讨优良地方品种滩羊最佳产羔季节，从生产发育、羔羊成活率和经济效益3个方面进行研究试验结果表明，试验组羔羊平均初生重3．66kg，1月龄体重8．80kg，3月龄体重16．78kg；对照组羔羊平均初生重3．42kg，1月龄体重9．60kg，3月龄体重18．25kg。冬羔初生重大于春羔，而断奶期生长速度低于春羔。冬羔的成活率为97．5％，春羔为95．8％。3月龄冬羔每只收入402．72元，春羔每只收入401．5元。春羔虽然断奶期日增重高于冬羔，但综合羔羊成活率、经济效益等因素，在甘肃省景泰县饲养优良绵羊品种滩羊冬羔的生产效果和经济效益优于春羔。

Comparing Test on Production Effect of Winter Lamb and Spring Lamb

Three aspects including growth, survival rate, and economic benefit were studied to discuss optimum lambing season of excellent local breed Tan Sheep. The results indicated that average birth weight, 1-month weight and 3-month weight were 3.66kg, 8.80kg and 16.78 kg, respectively, for experimental group. Average birth weight, 1-month weight and 3-month weight were 3.42 kg, 9. 60kg and 18. 25kg, respectively, for control group. Birth weight of winter lamb was higher than spring lamb, growth speed of weaning period was lower than spring lamb. Survival rates of winter and spring lamb were 97. 5% and 95.8%, respectively. Income of each 3-month lamb was￥402.72 and ￥401.5 for winter lamb and spring lamb. Al- though weaning weight of spring lamb was higher than winter lamb, survival rate and economic benefit were considered togeth- er, under the condition in Jingtai County Gansu Province, production effect and economic benefit of winter lamb were higher than spring lamb.