科研之友
微信
新浪微博
Facebook
分享链接
摘要
The present study investigated the effect of a continuously administered feeding mixture supplemented with 1% of a herbal additive on egg production in utility layers. The premix was prepared using three herbal components originating from the following species: silver cinquefoil (Potentilla argentea L.). mint (Menta piperita L.), and chamomile (Matricaria chamomilla L.). Plain flour served as a carrier.
BOVANS hybrid hens were reared individually in three-floor cages and received the feeding mixture and drinking water ad libitum. A total of 72 layers included in the experiment were divided into two groups: experimental group (36 hens) and control group (36 hens). The layers were fed commercially available feeding mixtures N1 and N2. In the course of the experiment, the eggs collected from individual layers every clay were marked and weighed at the accuracy of 0.01 g. The monitoring performed from day 1 to week 40 of the laying period revealed that experimental and control layers laid 8,689 and 8,360 eggs, respectively. The average weight of eggs was 60.29 g in the experimental group and 60.64 g in the control group. No statistically significant differences between both groups were found in the mean weight of eggs. The herbal additive used had a beneficial effect on the laying rate in experimental layers which increased to 91.45% as compared to control layers (87.40%). The difference between the mean laying rates tested highly conclusive (p <= 0.01). Both experimental and control layers showed good health throughout the experiment, without clinical symptoms of any disease. A total of 6 layers died during the experimental period in both groups, i.e. 3 layers died in the experimental group, and 3 layers died in the control group.
- 出版日期2010-2
