饲粮粗蛋白质水平对济宁百日蛋种鸡生产性能的影响

发布时间：2018-09-05 07:20

【摘要】：本试验通过研究饲粮粗蛋白质水平对济宁百日蛋种鸡生产性能的影响,建立蛋白质需要量析因模型,确定济宁百日蛋种鸡饲粮粗蛋白质的需要量。采用单因素完全随机试验设计,饲粮粗蛋白质水平分别为13%、14%、15%、16%、17%,其他营养指标保持一致。选取40周龄、体重接近的健康济宁百日蛋种鸡525只,随机分为5组,每组5个重复,每个重复21只。预试期7 d,试验期56 d。结果表明:1)饲粮粗蛋白质水平对济宁百日蛋种鸡平均日粗蛋白质摄入量(ADCPI)有极显著的影响(P0.01),随着饲粮粗蛋白质水平的升高,ADCPI显著升高(P0.05)。2)饲粮粗蛋白质水平对济宁百日蛋种鸡41~48周龄的产蛋数、产蛋率、平均蛋重、平均日产蛋量(ADEM)均有显著影响(P0.05),对料蛋比有极显著影响(P0.01);高粗蛋白质水平组(16%、17%)的产蛋数、产蛋率、ADEM均高于低粗蛋白质水平组(13%、14%、15%)。在一定的饲粮粗蛋白质水平(13%~16%)范围内,蛋重有随着饲粮粗蛋白质水平的升高而升高的趋势。3)以ADCPI为因变量,以平均日增重(ADG)、ADEM和代谢体重(BW0.75)为自变量,拟合济宁百日蛋种鸡粗蛋白质需要析因模型为:ADCPI=0.268 0 ADG+0.271 1 ADEM+3.299 3 BW0.75(R2=0.993 4)。满足济宁百日蛋种鸡41~48周龄时最佳生产性能的适宜饲粮粗蛋白质水平为15.49%。
[Abstract]:In this experiment, the effect of dietary crude protein level on the performance of Jining 100-day egg fowl was studied, and the protein requirement factor model was established to determine the dietary crude protein requirement of Jining 100-day egg broiler. The single factor complete random trial design was used. The dietary crude protein level was 130.14% and 1.15% and 17%, respectively, and the other nutritional indexes remained the same. A total of 525 healthy Jining 100-day broilers of nearly 40 weeks of age were randomly divided into 5 groups, 5 replicates in each group and 21 in each group. The pretest period was 7 days and the trial period was 56 days. The results showed that the dietary crude protein level had a significant effect on the average daily crude protein intake (ADCPI) of Jining 100-day hens (P0.01), and with the increase of dietary crude protein level, ADCPI increased significantly (P0.05). The number of eggs laid at the age of 41 ~ 48 weeks, The egg laying rate, average egg weight and average daily egg yield (ADEM) were significantly affected (P0.05), and the ratio of feed to egg was significantly affected (P0.01), and the egg number of high crude protein level group (1617%) was higher than that of low crude protein level group (1314%), and the egg laying rate of high crude protein level group (16%) was significantly higher than that of low crude protein level group (13 15%). In a certain range of dietary crude protein (13%), egg weight increased with the increase of dietary crude protein level (3. 3). ADCPI was taken as dependent variable, (ADG) ADEM and metabolic weight (BW0.75) as independent variables. The factorial model for fitting the crude protein requirement of Jining 100-day laying chicken was: 0. 268 ADG 0.271 1 ADEM 3.299 3 BW0.75 (R22 0.993 4). The optimum dietary crude protein level for Jining 100-day broiler was 15.49 at the age of 41 ~ 48 weeks.
【作者单位】：山东农业大学动物科技学院;山东省农业科学院家禽研究所;
【基金】：山东省现代农业产业技术体系家禽创新团队营养与饲料岗位项目(SDAIT-13-011-08)
【分类号】：S831.5

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