Dietary Supplementation of Microalgae and/or Nanominerals Mitigate the Negative Effects of Heat Stress in Growing Rabbits

Bashar, Amr M.; Abdelnour, Sameh A.; El-Darawany, Abdelhalim A.; Sheiha, Asmaa M.

doi:10.1007/s12011-023-03953-0

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…Therefore, the primary mechanism for heat loss is increased respiratory rate (tachypnea) and shallow breathing (polypnea), resulting in panting, which efficiently removes heat through water evaporation from the respiratory tract ( 44 ). Intermittent HS was successfully implemented as indicated by increased rectal temperature and rectal temperature in the experimental treatments ( 45 , 46 ). Interestingly, chickens treated with medicinal plants showed slightly decreased Tr and RR relative to broiler chickens kept under HS conditions, which is in line with the findings of reference ( 47 ).…”

Section: Discussionmentioning

confidence: 99%

The effects of Artemisia Sieberi, Achillea Fragrantissima, and Olea Europaea leaves on the performance and physiological parameters in heat-stressed broiler chickens

Mahasneh,

Abuajamieh,

Abdelqader

et al. 2024

Front. Vet. Sci.

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High temperatures have detrimental effects on the performance and physiology of broiler chickens. Medicinal plants have various biological activities and may enhance the heat resistance of chickens during heat waves. Therefore, this study aimed to explore the potential roles of using specific local medicinal plants to alleviate the negative impacts of heat stress (HS) in broilers. In this study, 180 day-old chicks were used to investigate the effects of HS and dietary indigenous medicinal plants on growth performance, antioxidant biomarkers, and intestinal health. The chicks were assigned to six groups (18 pens with 10 chicks per pen) with three replicates each. In the first group, the chicks were kept under thermoneutral conditions (CON) and fed a basal diet. The other five groups were exposed to recurrent heat stress and fed a basal diet (T1, HS group) or supplemented with Artemisia Sieberi (1.25 g/kg of feed; T2), Achillea Fragrantissima (15 g/kg of feed; T3), Olea europaea (10 g/kg of feed; T4), and all the previous additives (all-in-one) combined at the same dose levels mentioned above (T5). At 21 days of age, the chicks from each group were exposed to two phases of heat stress: phase 1 from days 21 to 34 (34 ± 1°C) followed by phase 2 from days 35 to 39 (37 ± 1°C). The results indicate that HS significantly increased rectal temperature and respiration rate in broiler chickens. Feed intake and body weight gain were improved in all supplemented groups, while the feed conversion ratio was decreased in response to the dietary inclusion of medicinal plants. Additionally, glutathione peroxidase and immunoglobulin G levels were increased in the T3, T4, and T5 groups compared to the other groups. HS induced significant upregulated in the mRNA levels of heat shock protein 70 and interleukin-8, while the mRNA of occludin was decreased. The T3, T4, and T5 showed significantly decreased expression of hepatic HSP70 and ileum IL-8 genes and increased ileum mRNA occludin levels relative to the CON and T1 groups. In conclusion, supplementation with these plants enhances growth performance and maintains intestinal health sustaining the productivity of broiler chickens under HS conditions.

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Section: Discussionmentioning

confidence: 99%

The effects of Artemisia Sieberi, Achillea Fragrantissima, and Olea Europaea leaves on the performance and physiological parameters in heat-stressed broiler chickens

Mahasneh,

Abuajamieh,

Abdelqader

et al. 2024

Front. Vet. Sci.

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Chlorella and vegetable oil inclusion in diets for growing rabbits: effects on growth, digestibility, plasma metabolites, and caecal fermentations and microbiota

Bordignon,

Trocino,

Marín García

et al. 2024

animal

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Dietary grapeseed oil nano-emulsion improves blood health, organ histology, antioxidant status, immune-ability, and reduces inflammation in young fattening rabbits exposed to thermal stress

Attia,

Abdel Monem,

Khalil

et al. 2024

Annals of Animal Science

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Heat stress (HS) represents a major environmental impact on rabbits’ health, welfare, and production. Grape seed oil (GSO) has improved health and growth. However, the mechanism by which they mitigate the negative effects of HS in growing rabbits is still under debate. This study explored the protective role of dietary grape seed oil nanoemulsion (GON) against blood changes, immune dysfunction, organ histological damage, oxidative stress, and inflammation triggered by HS in growing rabbits. A total of 120 growing rabbits (5 weeks of age and average weight 657.32 g) were divided into 4 groups. The rabbits were administered with different doses of GON: 0 (HS, basal diet), 0.5 (GON0.5), 1 (GON1.0), and 1.5 (GON1.5) mL/kg of diet for 8 weeks under natural heat stress conditions. The results indicated that the GON1.0 and GON1.5 groups exhibited higher body weight values and gains than the other groups (P<0.05), showing a linear relationship with GON dietary levels. A quadratic relationship was observed between FCR and GON, with the optimal dose being 0.7mL/kg of diet. The GON1.5 group had higher red blood cell values than the other groups (p<0.05), while all GON groups significantly reduced leukocyte counts compared to the HS group (p<0.001) in a quadratic manner. GON1.5 and GON1.0 significantly enhanced protein fractions in linear regression analysis. Additionally, ALT, AST, lipid profile, uric acid, LDH, GGT, and total and direct bilirubin were significantly decreased in all rabbits fed with GON (p<0.05) in a quadratic manner. Enriching diets with GON (1 or 1.5 mL) significantly improved antioxidant status (SOD and GPx) and immunity (IgG and IgM) in a quadratic manner. It also resulted in a quadratic decrease in oxidative stress (MDA and PC) and inflammation (IL-6, lysosome activity, and IFN‐γ) levels compared to the HS group (p<0.001). There was a quadratic increase in IL-10 and nitric oxide with increasing the GON, and the optimal dose were 0.86 and 0.9 mL/kg of diet. The GON administration maintained organ architecture (liver, spleen, and intestines) and reduced the immune expression of iNOS in liver tissues induced by HS. Collectively, GON (1 mL/kg diet) is an effective feed additive for improving the health and growth of stressed rabbits by supporting antioxidant and immunity functions while reducing oxidative stress and inflammation pathways induced by HS.

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Dietary Supplementation of Microalgae and/or Nanominerals Mitigate the Negative Effects of Heat Stress in Growing Rabbits

Cited by 3 publications

References 47 publications

The effects of Artemisia Sieberi, Achillea Fragrantissima, and Olea Europaea leaves on the performance and physiological parameters in heat-stressed broiler chickens

The effects of Artemisia Sieberi, Achillea Fragrantissima, and Olea Europaea leaves on the performance and physiological parameters in heat-stressed broiler chickens

Chlorella and vegetable oil inclusion in diets for growing rabbits: effects on growth, digestibility, plasma metabolites, and caecal fermentations and microbiota

Dietary grapeseed oil nano-emulsion improves blood health, organ histology, antioxidant status, immune-ability, and reduces inflammation in young fattening rabbits exposed to thermal stress

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