Insulin, prolactin and thyroxine responses to feeding, and to arginine and insulin injections during growth in lambs

Godden, Patricia M. M.; Weekes, T. E. C.

doi:10.1017/s0021859600066144

Cited by 16 publications

(8 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since plasma insulin concentrations are positively related to fatness in sheep (Vandermeerschen-Doize et al, 1983;Rhind et al, 1985), it is possible that the difference in VFI between the L and H ewes was caused by a persistent effect of previous body condition on basal plasma insulin concentrations. Similarly, the difference in basal insulin levels is unlikely to be the result of contemporary nutrition, since plasma insulin concentrations normally increase with feeding (Godden and Weekes, 1981) and a positive effect of intake level on plasma insulin concentration has been demonstrated previously (Rhind et ah, 1985); whereas in the present study the ewes with the highest intakes had lower plasma insulin concentrations. Similarly, the difference in basal insulin levels is unlikely to be the result of contemporary nutrition, since plasma insulin concentrations normally increase with feeding (Godden and Weekes, 1981) and a positive effect of intake level on plasma insulin concentration has been demonstrated previously (Rhind et ah, 1985); whereas in the present study the ewes with the highest intakes had lower plasma insulin concentrations.…”

Section: Discussionsupporting

confidence: 75%

“…Feeding normally induces a biphasic pattern of insulin secretion in sheep, with a rapid transient peak, followed by a more prolonged peak 2 to 6 h after feeding (Godden and Weekes, 1981). This initial burst of insulin is probably mediated by reflex vagal mechanisms, whereas the second coincides with absorption and metabolism of the products of digestion (Weekes, 1986).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of previous body condition on appetite and associated insulin profiles in sheep

Sibbald¹,

Rhind²

1997

Anim. Sci.

View full text Add to dashboard Cite

The effect of previous level of body condition on appetite was studied in 47 housed Scottish Blackface ewes, which had been either thin (L: mean condition score 2-15, s.e. 0-030; no. = 24) or fat (H: mean condition score 3-15, s.e. 0-056; no. = 23) 8 weeks before the start of the experiment. The mean daily voluntary food intake (VFI) of a dried grass pellet diet was higher for the L than for the H ewes (2176 v. 1727 g dry matter per day; P < 0-001) during the first 6 weeks of the experiment (period 1). Over this time, live weights increased from 60-5 or 69-9 (s.e.d. 1-68) to 68-4 or 75-6 (s.e.d. 1-94) and condition scores increased from 2-84 or 3-16 (s.e.d. 0-057) to 3-13 or 3-38 (s.e.d. 0-071) for the L and H ewes respectively. At the end of the 6-week period, plasma insulin concentrations were measured in 10 ewes from each treatment (mean condition scores 3-15 (L) and 3-27 (H) (s.e.d. 0-091)) when fed both ad libitum and at a fixed level of 1200 g/day for consecutive 11-day periods (period 2). Mean VFI was higher for the L than for the H ewes (2191 v. 1661 g dry matter per day; P < 0-05) over the period of ad libitum feeding. There was no effect of feeding level (ad libitum v. 1200 g/day) on mean plasma insulin concentrations, but the mean basal plasma insulin concentration was higher in the H than in the L ewes (43-0 v. 29-0 mil per 1; P < 0-05). Fifteen minutes after the ingestion of a single 400 g meal, the plasma insulin concentration in the H ewes was higher than the mean prefeeding value (63-3 v. 41-7 mil per I; P<0-05) but there was no corresponding increase in the L ewes. The plasma insulin concentration 15 min after the intravenous administration of a single dose of 0-25 U per kg live weight of insulin ivas higher in the H than in the L ewes (1723 v. 1031 mil per 1; P < 0-01) but there were no differences between treatments in plasma glucose concentrations following insulin administration.It zvas concluded that previous body condition can affect contemporary VFI and this effect may be mediated by plasma insulin concentrations providing a long-term feedback signal to the brain.

show abstract

Section: Discussionsupporting

confidence: 75%

Section: Discussionmentioning

confidence: 99%

The effect of previous body condition on appetite and associated insulin profiles in sheep

Sibbald¹,

Rhind²

1997

Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…Increases in serum T4 concentrations during and shortly after meal consumption have been reported to occur in sheep (Blum et al, 1980;Godden and Weekes, 1981), pigs (Gurr et al, 1980;Dauncey et al, 1982) and humans (Burman et al, 1979). Although Ingram and Evans (1980) reported no effect of meal consumption on T4 concentrations in young pigs after a 12-h fast, they concluded that any changes in T4 secretion or utilization rates will be highly dependent on the sizes and caloric densities of the meals.…”

Section: Discussionmentioning

confidence: 99%

“…Many hormonal factors either stimulate, inhibit or disrupt longitudinal and cortical bone growth, especially growth hormone, thyroxine, insulin and cortisol (Daughaday et al, 1975). The secretion rates of several of these hormones are affected by the ingestion of meals by animals (Blum et al, 1980;Gurr et al, 1980;Godden and Weekes, 1981;Dauncey et al, 1982) and humans (Burman et al, 1979). The specific nutrient composition of a meal also affects postprandial concentrations of thyroxine, insulin and cortisol in pigs (Ingram and Evans, 1980), rats (Edozien et al, 1978) and humans (Azizi, 1978).…”

Section: Introductionmentioning

confidence: 99%

Hormonal Responses to High and Low Planes of Nutrition in Weanling Thoroughbreds

Glade

Gupta

Reimers

1984

Journal of Animal Science

View full text Add to dashboard Cite

Growth-related skeletal diseases in young horses have been associated with high planes of nutrition, although the mechanisms underlying such an association have not been determined. It is likely that nutrition-induced effects on growth rate or growth quality involve the endocrine system. Hormonal and metabolic responses to the ingestion of meals containing either 80% (diet A) or 160% (diet B) of National Research Council energy and protein recommendations were examined in eight Thoroughbred weanling horses after 3 wk of dietary adaptation. After 24 h fasts, prefeeding serum concentrations of thyroxine (T4) and insulin and plasma concentrations of glucose, total protein, total triglycerides, creatinine, Ca and P were similar regardless of which diet the horses had been consuming. Serum cortisol concentrations were higher (P less than .05) in horses when fasted from diet B. Thyroxine, insulin and glucose concentrations increased during ingestion of both meals. During the first hour after ingestion of diet A, T4 concentrations increased to about 150% of fasting concentrations, whereas after diet B, T4 concentrations decreased to about 85% of fasting concentrations. Concentrations of T4 were not different from fasting concentrations 4 h after the ingestion of both diets. Glucose concentrations increased during the first hour postprandially, from about 105 mg/dl to about 165 mg/dl. However, glucose decreased more rapidly after ingestion of diet B. Serum insulin concentrations increased more rapidly after ingestion of diet B. Cortisol concentrations decreased after both meals, and the concentrations of the other metabolites measured were not affected by diet level or by meal consumption.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

“…Arginine causes the release of some hormones such as glucagon, insulin, growth hormone, adrenalin, prolactin, and catecholamines. [37][38][39] In diabetic patients, after laser blood irradiation, levels of main metabolites such as glucose, glucose-6-phosphate, dehydroascorbic acid, R-3-hydroxybutyric acid, L-histidine, and L-alanine decrease and L-arginine increase in plasma. 40…”

Section: Metabolomic Effect Of Lasermentioning

confidence: 99%

Evaluation of Laser Effects on the Human Body After Laser Therapy

et al. 2020

View full text Add to dashboard Cite

Lasers have wide applications in the treatment and diagnosis of diseases and various medical fields. Laser therapy like the other methods has advantages and disadvantages. Some risks such as bleeding, pain, and infection are created after laser therapy. Explanation and evaluation of laser effects on cell function, tissue, and the body are the aims of this study. We reviewed papers available from 1986 to 2019 about the effects of lasers on cells and tissue. An online search of PubMed, Science Direct and Google scholar using such keywords as "laser", "cell", "tissue", "body" and "side effects" was performed. The laser photons are absorbed by chromophores, resulting in the target heating and localized damage. Laser irradiation alters cellular metabolism and cellular functions. These alterations may be accompanied by undesired side effects which can be monitored via metabolites level change in the body. Based on this finding, laser therapy may be associated with several side effects and complications; therefore, before treatment, the determination of laser types and their properties is necessary to avoid creating side effects. The advantages and disadvantages of the treatment type should be considered in order to choose the best treatment with the least side effects. The patients’ awareness of possible side effects before treatment and also an effective follow-up and management of patients after action are two important points in laser therapy. Training curriculum definition should be determined for laser applicant qualifications in different medical fields.

show abstract

Insulin, prolactin and thyroxine responses to feeding, and to arginine and insulin injections during growth in lambs

Cited by 16 publications

References 40 publications

The effect of previous body condition on appetite and associated insulin profiles in sheep

The effect of previous body condition on appetite and associated insulin profiles in sheep

Hormonal Responses to High and Low Planes of Nutrition in Weanling Thoroughbreds

Evaluation of Laser Effects on the Human Body After Laser Therapy

Contact Info

Product

Resources

About