Antioxidant Statues, Growth and Some Physiological Performances of the Gimmizah Male Chickens Supplemented by Dietary Spirulina Platensis under Chronic Heat Stress.

Abstract

The present study was carried out to study the effect of Spirulina supplementation on the growth and some physiological performances of the Gimmizah males exposed to heat stress (HS). A total number of 150 male 4 weeks old Gimmizah were randomly allocated in five groups (3 replicates, 10 chicks each). The first (positive control, PC) was reared under 22-24OC and PH 45-55% and fed unsupplied basal diet, B). Whereas, the other groups were reused under HS (38°C±1; 55-65 % RH) for three successive days /wk from 11.00 a.m until 15.00 p.m, through the experimental period (4 to 14 wks of age) in a battery brooders. The first HS group was used as a negative control (NC) and fed B. The 3rd and 4rd groups fed B plus 250 and 150 mg Spirulina /kg diet, respectively. The 5 group was fed the B plus 75 mg VE /kg diet. The feed consumption was significantly decreased for all groups under HS compared with PC group, while FCR for the groups under HS (supplied with Spirulina or VE) were significantly improved compared with NC. The differential of leukocytic count for the NC group recorded the significant increase on Lymphocyte, Heterophil and the ratio of H/L compared with other groups. The concentration of globulin and activity of GSH-PX were significantly improved for the groups supplied with both levels of Spirolina under HS compared with the NC group. The highest Infections Bronchitis titer was recorded for the group supplied with VE and PC group. In conclusion, addition of 150 and 250 mg Spirulina platensis /kg diet improved performance, immunity and can be decreased the adverse effect of heat stress for Gimmizah mail during growing period (4-14 wks of age).

Effect of Spirulina Platensis Algae Supplementation on Growth Performance, Physiological Status of Broilers During Summer Season

“…AST and ALT concentration significant decrease for the Spirulina groups (Table 7.) this results in agreement with Abaza et al (2021) and Jamil et al (2015) who reported that ALT and AST activity significantly decreased in all treatment groups supplemented with spirulina , therefore Zeweil et al (2019) results indicated that different supplementations as Spirulina 0.5 and 1 g\kg diet decreased adverse effect of heat stress on ALT and AST of chickens, and there was a slight decrease in plasma ALP and liver enzymes activities the obtained values are fell within the normal range groups in the present study and may reflect normal liver function. The decrease in ALP, ALT and AST actives were observed among supplemented groups.…”

“…On the other hand, Abaza et al (2021) found that the final body weight was not significant differed among different experimental groups at the end of experiment. Algae implies the presence of more than one group of growth-prompting substances such as (auxins, cytokinins and gibberellins) which may be influenced the body growth (Michalak et al, 2016).…”

“…Several studies have demonstrated the growth -promoting effects of spirulina platensis on broiler chickens. Abaza et al (2021) showed that feeding spirulina platens at level 2, 4 g\kg diets increased the body weight, weight gain and feed conversion ratio of broiler chickens. The yellowness of muscles, skin, fat, and liver increased with an increasing dietary level of microalgae, being more attractive for consumers in certain markets (Swiatkiewicz et al, 2015).…”