摘要
本试验旨在通过研究饲粮粗蛋白质水平对济宁百日鸡蛋品质和血清生化指标的影响,为确定济宁百日鸡适宜蛋白质需要量提供试验依据。采用单因素完全随机试验设计,选用体重相近、健康的40周龄济宁百日鸡产蛋鸡525只,随机分为5组,每组5个重复,每个重复21只鸡。各组分别饲喂粗蛋白质水平为13%、14%、15%、16%和17%的试验饲粮。预试期7 d,试验期56 d。结果表明：1）饲粮粗蛋白质水平显著影响了蛋重（P〈0.05）。在一定的饲粮粗蛋白质水平范围（13%~16%）内,蛋重有随着饲粮粗蛋白质水平的升高而升高的趋势。16%粗蛋白质水平组蛋重最大。2）饲粮粗蛋白质水平显著影响了44周龄的血清总蛋白（TP）、白蛋白（ALB）、尿酸（UA）含量及48周龄血清尿素（UREA）含量（P〈0.05）,但并未产生规律性的变化。综合试验结果,济宁百日鸡41~48周龄饲粮粗蛋白质水平不宜高于16%。
This experiment was conducted to study the effects of dietary crude protein level on egg quality and serum biochemical parameters of Jining Bairi chickens,and to provide experimental basis for determining the optimal protein requirement of Jining Bairi chickens.A single-factor completely randomized experiment design was applied,a total of 525 healthy 40-week-old Jining Bairi hens with similar weight were randomly allocated into 5 groups with 5 replicates per group and 21 chickens per replicate.The crude protein levels of the experimental diets were 13%,14%,15%,16%and 17%,respectively.The pretest period lasted for 7 days and the experiment lasted for 56 days.The results showed as follows：1） dietary crude protein level had a significant effect on egg weight（P〈0.05）.The egg weight showed a rising tendency with dietary crude protein level increased from 13%to 16%.The egg weight in 16%crude protein level group was the highest.2） Dietary crude protein level had significant effects on serum total protein（TP）,albumin（ALB） and uric acid（UA） contents at the age of 44 weeks and serum urea（UREA） content at the age of 48 weeks（P〈0.05）,but it did not have the regularity of changes.In conclusion,the suitable dietary crude protein level of Jining Bairi chickens from 41 to 48 weeks of age is less than 16%.
出处
《动物营养学报》
CAS
CSCD
北大核心
2016年第12期4023-4028,共6页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
山东省现代农业产业技术体系家禽创新团队项目(SDAIT-11-08)
关键词
粗蛋白质
济宁百日鸡
蛋品质
血清生化指标
crude protein
Jining Bairi chickens
egg quality
serum biochemical parameters
