Liver Na+K+-ATPase activity and circulating levels of corticosterone and thyroid hormones following cold and heat exposure in the pigeon

Pilo, B.; John, T. M.; George, J. C.; Etches, R. J.

doi:10.1016/0300-9629(85)90686-3

Cited by 11 publications

(1 citation statement)

References 21 publications

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“…Although it is generally accepted that T3 stimulates metabolic activity and that both T3 and T4 are declined following heat stress, this pattern is not universally observed. For example, plasma T3 and T4 concentrations have been reported to increase, decrease, or remain unchanged following heat stress in Japanese quail and pigeons (Bobek et al, 1980; Bowen & Washburn, 1985; John & George, 1977; Pilo et al, 1985). Some experiments conducted on heat‐acclimatized or non‐acclimatized broilers of different lines also failed to elicit a consistent pattern in changing plasma thyroid hormone in response to heat stress (May et al, 1986), leading to the conclusion that the complex physiological response to heat stress does not consistently affect plasma thyroid hormones concentration (Etches et al, 1995).…”

Section: Discussionmentioning

confidence: 99%

Oral administration of L‐citrulline changes the concentrations of plasma hormones and biochemical profile in heat‐exposed broilers

Chowdhury

Ouchi

Han

et al. 2021

Animal Science Journal

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We examined the effects of oral administration of L-citrulline (L-Cit) on plasma metabolic hormones and biochemical profile in broilers. Food intake, water intake, and body temperature were also analyzed. After dual oral administration (20 mmol/ head/administration) of L-Cit, broilers were exposed to a high ambient temperature (HT; 30 AE 1 C) chamber for 120 min. Oral administration of L-Cit reduced (p < .001) rectal temperature in broilers. Food intake was increased (p < .05) by heat stress, but it was reduced (p < .05) by L-Cit. Plasma levels of 3,5,3 0 -triiodothyronine, which initially increased (p < .0001) due to heat stress, were reduced (p < .01) by oral administration of L-Cit. Plasma insulin levels were increased by heat exposure (p < .01) and oral L-Cit (p < .05). Heat stress caused a decline (p < .05) in plasma thyroxine. Plasma lactic acid (p < .05) and non-esterified fatty acids (p < .01) were increased in L-Cit-treated heat-exposed broilers. In conclusion, our results suggest that oral L-Cit can modulate plasma concentrations of major metabolic hormones and reduces food intake in broilers.

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