不同规格育雏育成笼对蛋鸡生长、生产性能和免疫效果的影响

发布时间：2018-05-14 07:03

本文选题：雏鸡笼具 + 生长　；参考：《安徽农业大学》2015年硕士论文

【摘要】：育雏好坏直接影响着雏鸡的生长发育,影响产蛋期生产性能的发挥。目前对影响育雏效果的因素研究很多,但关于雏鸡笼具方面的研究却很少。本试验研究不同规格育雏育成笼对蛋鸡生长、生产性能和免疫效果的影响,为蛋鸡饲养提供参考。试验一:选取体重接近的1日龄罗曼褐商品蛋鸡519只,随机分3个组,置于大、中、小三种规格育雏育成笼中,分别编号为A、B、C组,每组173只。进笼时戴上翅号,试验期间通过加入非试验鸡来保证各组饲养密度相同。试验期为8周。测定其生长性能、血清生化指标和胫骨强度。试验二:118日龄时,从A、B、C组各随机取健康且发育良好的鸡90只,饲养在同一间蛋鸡舍的3层阶梯笼中,每组三个重复,每个重复30只鸡。试验期为60天。测定其产蛋性能、蛋品质和免疫效果。结果如下:1.生长性能结果表明,A组体重、胫围和胫长均显著高于C组(P0.05)。体重在A组与B组间,14日龄时差异不显著(P0.05),14日龄以后A组均显著高于B组(P0.05);在B组与C组间,14、28日龄时B组显著高于C组(P0.05),28日龄以后均差异不显著(P0.05)。日增重与体重变化趋势相似,日采食量仅3~4周龄时A组与C组间差异显著(P0.05)。胫长和胫围也与体重变化趋势相似,但28、56日龄时各组间胫骨强度均差异不显著(P0.05)。大笼的料重比相对较低,均匀度长期比小笼高。56日龄时,A组体重与标准体重最接近,B组和C组体重均偏轻。2.血清生化指标显示,28日龄时,FT4-I在A组血清中的浓度显著低于C组(P0.05)。TP、GLB和T-CH在A组血清中的含量均显著高于C组(P0.05)。56日龄时,FT3-I、FT4-I和T3/T4在A组与C组间均差异显著(P0.05)。ALP在B组与C组间达到差异显著水平(P0.05)。P和TG在A组血清中浓度显著低于C组(P0.05)。其它各项血清生化指标在三组间均差异不显著(P0.05)。3.开产蛋鸡性能表明,使用大笼和中笼进行育雏育成,见蛋日龄和50%开产日龄提前。各项产蛋性能指标在三组间均差异不显著(P0.05)。试验期间仅C组出现1.11%的死淘率。蛋品质指标仅蛋黄色泽在B组与C组间达到差异显著水平(P0.05)。4.抗体滴度测定结果显示,H5抗体滴度在第1、4次检测时,A组与C组间差异不显著(P0.05),其它各次检测结果A组均显著高于C组(P0.05);7次检测结果,ND抗体滴度在三组间均差异不显著(P0.05)。综上所述:使用大笼进行育雏育成更有利于雏鸡生长发育,可使开产日龄提前,提高产蛋早期(118~176d)H5的免疫效果。
[Abstract]:The quality of brooding directly affects the growth and development of chicks and the performance of laying period. At present, there are a lot of studies on the factors affecting the effect of brooding, but there is little research on the cages of chicks. The effects of different sizes of brooding cages on the growth, production performance and immune effect of laying hens were studied in this experiment. Experiment 1: 519 Roman brown commercial laying hens of close weight were randomly divided into 3 groups, which were divided into three groups: large, medium and small size brooding cages, and numbered as Agnan Bon C group (173 in each group). Wear wing number when entering the cage, and ensure the same density of each group by adding non-test chicken during the experiment. The trial period was 8 weeks. Growth performance, serum biochemical index and tibia strength were measured. At the age of 2: 118 days, 90 healthy and well-developed chickens were randomly selected from group A (B) C. they were raised in a three step cage in the same layer house. Each group had three replicates and 30 chickens per replica. The experimental period is 60 days. The egg laying performance, egg quality and immune effect were measured. The result is as follows: 1. The results showed that the body weight, tibia circumference and tibial length of group A were significantly higher than that of group C (P 0.05). There was no significant difference in body weight between group A and group B after 14 days of age. After 14 days of age, the body weight of group A was significantly higher than that of group B (P 0.05), and that of group B was significantly higher than that of group B (P 0.05) after 28 days of age, and there was no significant difference between group B and group C after 28 days of age. The trend of daily gain was similar to that of body weight. The difference of daily intake between group A and group C was significant (P 0.05) when the daily intake was only 3 ~ 4 weeks old. The tibial length and tibial circumference were similar to those of body weight, but there was no significant difference in tibial strength between the two groups at the age of 28 ~ 56 days (P 0.05). The feed weight ratio of large cage was relatively low, and the weight of group A was lighter than that of group B and group C at 56 days of age when the evenness was higher than that of small cage for a long time, and the weight of group A was the closest to that of group B and group C. The serum biochemical indexes showed that the concentration of FT4-I in serum of group A was significantly lower than that of group C (P 0.05). TPGLB and T-CH in group A were significantly higher than those in group A (P 0.05) and T3/T4 in group B (P 0.05). The serum concentrations of P0.05U. P and TG in group A were significantly lower than those in group C (P 0.05). There was no significant difference in other serum biochemical indexes among the three groups. The performance of the laying hens showed that the egg age and 50% of the first laying days were earlier than those in the large cage and the middle cage for brooding. There was no significant difference among the three groups in laying performance index (P0.05). Only 1.11% of group C died during the trial. The egg quality index only reached the level of significant difference between group B and group C (P0.05. 4). The results of antibody titer test showed that there was no significant difference in titer of H5 antibody between group A and group C at the first four times, but the other results in group A were significantly higher than those in group C (7 times). There was no significant difference in the titer of ND antibody among the three groups. To sum up: it is more favorable for the growth and development of chicks to use large cages to raise the age of laying, and to improve the immune effect of H5 in the early stage of laying eggs.
【学位授予单位】：安徽农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S831

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