الفهرس 
Rabbit:Only 14 pages are availabe for public view
 |  | from | 108 |  |  |
| | | from | 108 | | |
Abstract
The current study aimed to evaluate the effect of treatment with combination of royal Jelly(RJ)plus green tea(GT)or propolis(PR)plus GT on thermos physiological response,growth performance,blood biochemicals,carcass traits and testes histology Total of 60 NZW weaned rabbits(5 wk of and 703.03±11.59 g)were assigned into three similar groups of 20 rabbits in each(10 males and 10 females).Rabbits in the 1stand 2nd groups were fed complete feed diet(CFD)supplemented with 2 g GT/kg diet and orally treatment twice/week with 150 mg local RJ/kg LB(G1)or 0.5 g PR/kg(G2).However, rabbits in the 3rd group were fed the same CFD without any supplements or treatment(G3).Throughout the experimental period, temperature humidity index (THI),rectal temperat(RT),LBW,feedintake(FI),viability rate and performance index(PI)were calculated were recorded, and then daily weight gain (DWG)and feed conversion ratio(FCR) were calculated at5-9,9-13 and 5-13 age intervals. Blood samples were collected at the end of the experimental period(13 wk of age)from three males from each group for determination of total proteins,albumi,glucose,cholesterol,triglyceride high density lipoproteins(HDL)low density lipoprote(LDL),creatinine,urea, triiodothyronine(T3)and tetraiodothyronine(T4)concentrations,as well as activity of aspartate(AST)and alanine(ALT) transaminases in serum. At the end of the experimental period (13 wk of age), three males from each group to evaluate carcass traits. Meat samples from hind limb were taken for chemical analysis. Small samples from testicle tissues were taken and prepared for the histological structure of testes.Results showed that Rabbits in all groups extremely severed from heat stress throughout all months studied, in particular during August and September months. Rectal temperature (RT) reduced in G2(P<0.05) and G1(P≥0.05)as compared to G3, being better in males than in females.Both G1 and G2 showed marked improvement in live body weight(LBW),average daily gain (ADWG),relative growth rate (RGR), average daily feed intake(ADFI),feed conversion ratio(FCR)and performance index(PI)as compared to G3,being with the best in G2,in particular, at 5-9 wk of age. Viability rate (VR) was the highest in G1 as compared to G2 and G3,and higher in females than males only in G2. Blood parameters, including concentrations of total proteins, albumin (AL), globulin (GL), AL: GL ratio,total cholesterol,triglycerides, LDL,HDL,creatinine and urea were no
affected by treatment. Serum glucose concentration was higher(P<0.05)in
G2 than in G1, but both groups did not differ significantly from that in G3.
Activity of ALT in blood serum were not affected by treatment.Activity of
AST in blood serum reduced (P<0.05) in G1, but did not differ in G2 as
compared to G3. Concentration of T3 and T4 was higher (P<0.05) in G1 than
in G2 and G3.All carcass traits and chemical composition of meat were not
affected significantly by treatment, although there was a tendency of higher
testes weight (absolute and relative) and lower fat weight (absolute and
relative) in G1 and G2 than in G3.The histological examination of both liver
and kidney indicated intact architecture of these organs indicating normal liver and kidney function in treatment groups as compared to control group. Histological structure of male rabbit testis had more density of seminiferous tubules with thicker spermatogenic layer and thinner interstitial connective tissue in G1 and G2 than in G3. Economic feed efficiency was the best in G1, followed by G2, and the lowest in G3. treatment of weaned rabbits subjected to Egyptian summer conditions during growing period from 5 to 13 weeks of age with green tea in combination with royal jelly or propolis twice/week resulted in improving growth performance, viability rate, economic feed
efficiency and testicular development of male without adversely effects on
rabbit health, in particular, at 5-9 wk of age interval. A combination of royal
jelly with green tea showed the best results.