الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 95 |  |  |
| | | from | 95 | | |
Abstract
The present study was carried out at a poultry farm under supervision of Animal Production Department, Faculty of Agriculture, Tanta University from January to March 2021. The chemical analysis was performed in the Laboratories of Animal Production Department, Faculty of Agriculture, Tanta University. That study was carried out to investigate the effect of different concentrations of bee venom on the performance and physiological status of broilers. Three hundred and seventy-five unsexed one-day old Avian chicks with an initial body weight of (45.2 ± 0.7g), were obtained from a local commercial hatchery. Chicks were divided randomly into five equal experimental groups; according to the level of bee venom in their drinking water as follows: Control Drinking water without any addition (tap water). (T2) Drinking water treated with bee venom (0.5mg/Liter) (T3) Drinking water treated with bee venom (l.Omg/Liter) (T4) Drinking water treated with bee venom (1.5mg/Liter) (T5) Drinking water treated with bee venom (2.0mg/Liter) The diluted of drinking water used in the experiment included: Control Tap water (T2) (0.5mg/Liter) (50mg added to 100 ml distilled water) (T3) (1.0mg/Liter) (100 mg added to 100ml distilled water) (T4) (1.5mg/Liter) (150 mg added to 100ml distilled water ) (T5) (2.0mg/Liter) (200mg added to 100ml distilled water ) Measurements: Body weight, weight gain, feed consumption, feed conversion ratio and mortality rate were recorded weekly. At the end of the experimental period, 9 birds were randomly selected for slaughter test and fresh blood samples were collected for hematological examination includes WBCs, RBCs, HGB, HCT, MCV, MCH, MCHC and PLT was determined by using HBVET-1 automated hematology analyzer. Some blood biochemical constituents such total protein, albumin, globulin, serum aspartate transaminase (AST), serum alanine transaminase (ALT), triglyceride, total cholesterol, and total lipids were determined. Obtained results could be summarized as follows: 1. During the whole experimental period, birds received bee venom at the level of 2.0 mg/L in drinking water had significantly (P≤0.05 and 0.01) the highest body weight followed by those received 1.5 mg/L drinking water followed by those received 1.0 mg/L drinking water and then received 0.5 mg/L in drinking water compared to the control. At the same time, no significant differences (P>0.05) were observed between groups treated by 1.0, 1.5 or 2.0 mg/L. drinking water. 2. Throughout the starter and grower period, it can be noticed that weekly feed consumption of broiler chicks was significantly (p≤0.05) effected by levels of bee venom during the experimental period, except the first week of starter period. The amount of weekly feed consumption was significantly (p≤0.05) decreased for groups treated with bee venom at the levels of 2.0, 1.5, 1.0 or 0.5 mg/L drinking water compared to the control group, respectively. 3. Data showed that, no significant (P>0.05) differences were observed between all treatments for the relatives weight of gizzard, heart, and bursa. On the other hand, there were significant (P≤0.05) effects for carcass, dressing, abdominal fat and relative liver, thymus, and spleen weights between broilers received drinking water supplemented with different levels of bee venom. 4. Statistical analysis revealed that, there were no significant (p>0.05) differences between all treatments for the concentration of total protein, albumin and globulin. While the activity of GPT and GOT enzymes were significantly (P≤0.01) decreased by increasing supplementation level of bee venom from 0.5 up to 2mg/L drinking water. Similarly, the concentration of triglycerides was significantly (P≤0.01) decreased by increasing supplementation level of bee venom from 0.5 up to 2mg/L drinking water. 5. No significant differences (P>0.05) were observed for RBCs, HGB, MCH, MCHC and PLT. On the other direction, both of WBCs and HTC were significantly increased by increasing supplementation level of bee venom from 0.5 up to 2mg/L drinking water. 6. No significant differences (P>0.05) were observed for each IgA, IgG, and IgM. 7. In conclusion, the use of bee venom in drinking water of broiler up to 2mg/L. is able to improve productive performance, carcass traits and some blood biochemical parameters.