PDF(Pubmed)
Abstract：
This trial was carried out to find out the effects of the parent flock and hatching time of broiler chickens on the production traits and bacteriota development of animals. Two sets of 730 hatching eggs were collected from two different parent flocks with ages of 25 and 50 weeks. In the hatchery, both groups were divided into two subgroups: those hatched during the first 10 and the subsequent 10 h of the hatching window. A feeding trial was carried out afterwards, using the four treatments in six replicate floor pens and feeding commercial starter, grower, and finisher diets that contained all the nutrients according to the breeder\'s recommendations. The day-old chickens of the older parent flock and those hatched later were heavier, and this advantage remained until the end of the production period. The different ages and origins of the parent flocks failed to modify the microbiological parameters of the chicken\'s ceca; however, the hatching time significantly influenced the different bacteriota diversity indices: the late-hatched chickens showed higher Bacteroidetes and lower Firmicutes and Actinobacteria abundances at day 11. These treatments resulted in differences in the main families, Ruminococcaceae, Lactobacillaceae, and Bacteroidaceae. These differences could not be found at day 39.
摘要：
本试验旨在研究肉鸡的亲代和孵化时间对动物生产性状和细菌发育的影响。从25和50周龄的两个不同的亲本群中收集了两组730个孵化卵。在孵化场,两组均分为两个亚组：在孵化窗口的前10小时和随后的10小时孵化的亚组。随后进行了喂养试验，在六支复制地板用笔中使用四种处理方法，并喂养商业起动器，种植者,根据饲养员的建议，包含所有营养素的完成者饮食。年龄较大的母羊和后来孵化的母鸡的日龄较重，这种优势一直保持到生产期结束。不同年龄和起源的父鸡群未能改变的微生物学参数;然而,孵化时间显着影响了不同的细菌多样性指数：孵化后期的鸡在第11天显示出较高的拟杆菌，较低的Firmicutes和放线菌丰度。这些治疗导致了主要家庭的差异，Ruminocycaceae,乳酸杆菌科，和拟杆菌科。在第39天没有发现这些差异。
