Continuous Infusion of Adrenocorticotropin Elevates Circulating Lipoprotein Cholesterol and Corticosterone Concentrations in Chickens ,

Latour, M. A.; Laiche, S. A.; Thompson, James R.; Pond, Amber; Peebles, E. D.

doi:10.3382/ps.0751428

Cited by 18 publications

(4 citation statements)

References 23 publications

(26 reference statements)

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“…A dramatic affect in these younger birds was a highly signifi-cant increase (P < 0.0001) in serum triglyceride levels. The increase in triglyceride levels seen in stressed birds in the present study supports the observations seen in stress models using adrenocorticotropic hormone infusion (Latour et al, 1996;Puvadolpirod and Thaxton, 2000) and in turkeys undergoing the stressors of crowding and overheating (Kowalski et al, 2002). In the present study, the increase appears to have been modulated by YE supplementation, which significantly decreased triglyceride levels, particularly at the 500 g/ton level.…”

Section: Discussionsupporting

confidence: 92%

Bacterial clearance, heterophil function, and hematological parameters of transport-stressed turkey poults supplemented with dietary yeast extract

Huff

Farnell

et al. 2010

Poultry Science

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Yeast extracts (YE) contain biological response modifiers that may be useful as alternatives to antibiotics for controlling pathogens in poultry production and mitigating the deleterious effects of production stressors. The objective of the present study was to determine the ability of a commercial dietary YE (Alphamune) to modulate the immune response in male turkey poults challenged with Escherichia coli and subjected to transport stress. Alphamune was added to turkey poult diets at 0, 500, or 1,000 g/ton. Poults were challenged by air sac injection with 60 cfu of E. coli at 1 wk of age. At 3 wk of age, these challenged birds were subjected to transport stress and birds were bled and necropsied the following morning. Blood cell numbers and percentages, hematological parameters, and clinical chemistry values were determined. Oxidative burst activity of isolated heterophils was measured using stimulation with phorbol myristate acetate and a 2',7'-dichlorofluorescein diacetate assay. Data were analyzed using GLM and least squares means procedures of the SAS program. The numbers and percentages of heterophils in peripheral blood were increased and their oxidative burst activity was stimulated by YE. The stress challenge dramatically increased oxidative burst and this increase was significantly modulated by YE treatment. Serum levels of calcium, phosphorus, and triglycerides were decreased and uric acid levels, erythrocyte numbers, hemoglobin, and hematocrit were increased by YE supplementation. Bacteria were isolated from the air sac and liver of a lower percentage of birds provided with YE. These results suggest that dietary YE has potential as a nonantibiotic alternative for decreasing bacterial pathogens in turkey production.

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Section: Discussionsupporting

confidence: 92%

Bacterial clearance, heterophil function, and hematological parameters of transport-stressed turkey poults supplemented with dietary yeast extract

Huff

Farnell

et al. 2010

Poultry Science

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“…This suggests that classical music can reverse the growth inhibition caused by increased stocking density and improve broiler growth performance. When birds experience stress, their HPA axis is activated, and the pituitary gland is stimulated to secrete ACTH and glucocorticoids synthesized by adrenal cortical cells (29). Puvadolpirod et al (30) found that the injection of high doses of exogenous ACTH increased corticosterone levels in the blood of broilers and increased stress levels by establishing a physiological stress model.…”

Section: Discussionmentioning

confidence: 99%

Effect of classical music on growth performance, stress level, antioxidant index, immune function and meat quality in broilers at different stocking densities

et al. 2023

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High-stocking density is one of the factors that can easily cause oxidative stress and inflammatory reaction of broilers. Currently, music therapy has been proposed to help animals relieve stress to some extent. However, it is still unclear whether classical music can alleviate stress in broilers at high stocking densities. Hence, this study aimed to investigate the effects of classical music on growth performance, stress level, antioxidant index, immune function and meat quality of broilers under different stocking densities. A total of 540 one-day-old broilers with similar body weight were randomly divided into 6 treatment groups, with 6 replicates per group, which included two feeding environments (with/without classical music) and three stocking densities (15.5, 17.9, and 20.3 birds/m2), thereby making a 2 × 3 factorial arrangement. The results showed as follows: increasing stocking density decreased the average daily feed intake and average daily gain (ADG), increased feed-to-gain ratio (F/G) and mortality of broilers. Moreover, increased density resulted in an increase in serum corticosterone (CORT) and adrenocorticotropic hormone (ACTH) levels. Increasing stocking density decreased spleen and bursal indices, serum immunoglobulin A (IgA), immunoglobulin G (IgG), and immunoglobulin M (IgM) levels. Increasing stocking density elevated serum malondialdehyde (MDA) and decreased catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activities. Increasing stocking density decreased serum total protein (TP) levels and increased total cholesterol (TC) and glucose (GLU) levels. Additionally, increasing stocking density decreased the cooking liss of pectoralis and increased the L*24h value of pectoralis. Meanwhile, playing classical music for broilers increased their ADG and decreased F/G, and decreased serum CORT, ACTH, GLU content. In addition, the bursa of Fabricius index, serum IgA and IgG contents as well as the a*24h value of pectoralis was increased under the music therapy. In conclusion, high-stocking density (20.3 birds/m2) harmed the growth performance and health of broilers, and the classical music stimulus ameliorated the negative effects to some extent.

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“…Studies of models of physiological stress in chickens using the treatment with ACTH or corticosterone showed that the metabolic changes associated with stress in chicken are increased plasma glucose, total proteins, triacylglyceroles and cholesterol (Davison et al 1983;Latour et al 1996;Puvadolpirod and Thaxton 2000 ab). Response in these metabolic parameters to chronic food restriction differ in several respects.…”

Section: Discussionmentioning

confidence: 99%

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

Kubíková¹,

Výboh²,

Košťál³

2001

Acta Vet. Brno

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Kubíková ª., P. V˘boh, ª. Ko‰Èál: Behavioural, Endocrine and Metabolice Effects of Food Restriction in Broiler Breeder Hens. Acta Vet. Brno 2001, 70: 247-257.The effects of food restriction on behaviour, endocrine and metabolic parameters were studied in immature (13 weeks old) female breeding birds of the meat-type chickens (broiler breeders). Ad libitum fed hens were compared with those subjected to one qualitative (diet diluted with 30 % hardwood sawdust) and two quantitative (the daily ration recommended by the breeding company and twice that amount) food restriction treatments. Behaviour of quantitatively restricted hens provided with one daily meal showed marked diurnal variation, while that of hens with free access to food (ad libitum fed and qualitatively restricted) was more evenly distributed throughout the day. There were elevated plasma corticosterone concentrations in hens subjected to intensive quantitative restriction. Although an increase in corticosterone concentrations of hens subjected to qualitative food restriction was lower, it was significant in comparison with ad libitum control, indicating that even mild qualitative food restriction is stressful. Compared to ad libitum fed hens, there were decreased plasma T 3 concentrations in all food restriction treatments, while plasma T 4 concentrations increased in intensively quantitatively restricted hens. Food restriction did not affect plasma glucose and total proteins, whereas triacylglycerol levels were decreased and cholesterol increased as a consequence of restriction. Creatinine level was increased in hens with less intensive quantitative restriction and plasma concentration of uric acid was decreased in qualitatively restricted hens in comparison with all other treatments. These results suggest that although behaviour of qualitatively restricted-fed hens resemble more to that of ad libitum-fed hens, their physiological status reminds more quantitatively restricted ones.

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Continuous Infusion of Adrenocorticotropin Elevates Circulating Lipoprotein Cholesterol and Corticosterone Concentrations in Chickens ,

Cited by 18 publications

References 23 publications

Bacterial clearance, heterophil function, and hematological parameters of transport-stressed turkey poults supplemented with dietary yeast extract

Bacterial clearance, heterophil function, and hematological parameters of transport-stressed turkey poults supplemented with dietary yeast extract

Effect of classical music on growth performance, stress level, antioxidant index, immune function and meat quality in broilers at different stocking densities

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

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