Pre- and post-feeding plasma gastrin-17 and insulin concentrations and feed intake in female goats during different physiological stages

Todini, Luca; Trabalza‐Marinucci, Massimo; Malfatti, Alessandro; Barbato, Olimpia; Stradaioli, G.; Cavallucci, C.; Debenedetti, A.

doi:10.1016/j.smallrumres.2006.04.007

Cited by 12 publications

(8 citation statements)

References 37 publications

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“…Dietary treatment did not significantly affect plasma INS levels, although they have been previously correlated with energy intake in adult goats (Magistrelli et al, 2005;Todini et al, 2007b). The correlation between INS levels and the adiposity state, previously reported in sheep (Archer et al, Dietary supplement, mohair and hormones in Angora kids 2002) was confirmed in the present study, where plasma INS was positively correlated with LW and BCS.…”

Section: Discussionsupporting

confidence: 85%

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Effects of field bean (Vicia faba L. var. minor) dietary supplementation on plasma thyroid hormones, insulin, insulin‐like growth factor‐1 concentrations and mohair characteristics in growing Angora goat kids

Acuti¹,

Todini²,

Malfatti³

et al. 2009

Animal Physiology Nutrition

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Twenty-two Angora kids were used to study the effect of a dietary supplementation with field bean (Vicia faba L. var. minor) on hair follicle activity, mohair characteristics and plasma total thyroxine (T4), triiodothyronine (T3), insulin (INS) and insulin-like growth factor-1 (IGF-1) concentrations. At birth, their mothers were divided in two groups (S: supplemented, C: control), the S group being supplemented with 300 g/head/day of whole field bean. At weaning, diet of kids from S group was supplemented with 80 g/head/day of whole field bean. At weaning, secondary hair follicle activity (S: 0.91 ± 0.01, C: 0.84 ± 0.02, p < 0.01) and staple length (S: 5.82 ± 0.13 cm, C: 5.16 ± 0.14 cm, p < 0.001) were greater in the S group. At 155 days of age, secondary fibre diameter (S: 16.54 ± 0.35 μm, C: 18.09 ± 0.31 μm, p < 0.01) was higher in the C kids. Concentrations of total plasma T4 and T3 were higher (p < 0.001) in S (120 ± 12 and 4.87 ± 0.92 ng/ml respectively) than in C kids (92 ± 8 and 2.97 ± 0.77 ng/ml respectively). At weaning, T4 values were negatively correlated (p < 0.05) with the secondary fibre diameter and the T3/T4 ratio was positively correlated (p < 0.05) with the secondary to primary hair follicle ratio. At 155 days of age, both T3 and T3/T4 values were positively correlated (p < 0.01) with staple length. Plasma INS (0.11 ± 0.03 ng/ml) and total IGF-1 concentrations (232 ± 13 ng/ml) were not affected by diet. Improvements of diet quality in kids positively affected fibre diameter and length and follicle activity rate. We suggest that increased circulating thyroid hormones concentrations, but not those of INS and IGF-1, may contribute to the beneficial actions of nutritional supplementation on anatomical growth and mohair production of kids.

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Section: Discussionsupporting

confidence: 85%

“…It has a role in the regulation of changes, which occur during different physiological stages and in determining related nutrient requirements. In dairy goats, plasma INS levels were found to be positively correlated with energy intake (Todini et al., 2007b).…”

Section: Introductionmentioning

confidence: 99%

Effects of field bean (Vicia faba L. var. minor) dietary supplementation on plasma thyroid hormones, insulin, insulin‐like growth factor‐1 concentrations and mohair characteristics in growing Angora goat kids

Acuti¹,

Todini²,

Malfatti³

et al. 2009

Animal Physiology Nutrition

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“…Our group recently reported that animals increasing their body weight/body fat reserves, like those of the present LLg group, showed higher plasma insulin and glucose concentrations, and that this might explain these animals' improved reproductive results (Gallego-Calvo et al, 2015b). Insulin concentrations were not monitored in the present study since the results were so clear in this earlier work, and because the literature clearly shows that plasma insulin concentrations increase, and better reproductive results are achieved, in does fed large amounts of concentrate (Todini et al, 2007) or when they are overfed (Tsiplakou et al, 2012). The second possible explanation lies in the fact that plasma IGF-1 concentrations became higher in the LLg+Mel, LLgMel and HHl+Mel subgroups compared to the HHl-Mel subgroup.…”

Section: Discussionmentioning

confidence: 56%

The reproductive performance of female goats treated with melatonin is not improved after introduction to bucks displaying springtime sexual activity if these does are experiencing decreasing body weight/condition score

Zarazaga

Gatica

Gallego-Calvo

et al. 2017

Animal Reproduction Science

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Title: The reproductive performance of female goats treated with melatonin is not improved after introduction to bucks displaying springtime sexual activity if these does are experiencing decreasing body weight/condition score Authors: L.A. Zarazaga, M.C. Gatica, L. Gallego-Calvo, J.L. Guzmán PII:S0378-4320 (16) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights Reproductive activity of bucks is reduced in spring when male effect is used.  The response to the male effect decreases when females have an inadequate food supply.  Melatonin might reduce the negative effect of decreasing body weight-condition score.  Greater fecundity, fertility and productivity were observed in gain-melatonin does.  Plasma glucose and IGF-1 concentrations could explain the better reproductive results.3 AbstractThe aim of the present work was to determine whether treatment with melatonin modifies the reproductive response of female goats experiencing increasing or decreasing body weight (BW)/body condition score (BCS) when introduced to bucks displaying springtime sexual activity. During natural anoestrus, 53 does were isolated from bucks for a period of 42 days and distributed into two groups: 1) low BW/low BCS animals (N=24) (LLg group), which were fed 1.9 times their maintenance requirements so they would experience increasing BW and BCS; and 2) high BW/high BCS animals (N=29) (HHl group), which were fed 0.4 times their maintenance requirements so they would experience decreasing BW and BCS. Half of each group was treated, or not, with melatonin (LLg+Mel N=12, HHl+Mel N=15, LLg-Mel N=12 and HHlMel N=14). On 6th May they were introduced to six males, showing natural sexual activity, fitted with marking harnesses (thus permitting the detection of oestrous activity). The ovulation rate was assessed by transrectal ultrasonography and confirmed via the plasma progesterone concentration (measured twice per week in blood samples). Plasma glucose, IGF-1 and non-esterified fatty acid concentrations were also determined, along with the conception rate, fertility, prolificacy and productivity of the does. LH concentrations and LH pulsatility were also recorded in the hours around introduction to the males. 'Oestrous plus ovulation' was observed only in does treated with melatonin. A higher conception rate and greater fertility and productivity were observed among the LLg+Mel does. These females showed higher glucose and IGF-1 concentrations after the introduction of the males. LH concentrations increased after male introduction independent of all other conditions. In conclusion, the present results show that treatment w...

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“…Indeed, in this study, significantly higher blood plasma insulin concentrations were observed in overfed compared with underfed goats. Similarly, increased blood plasma insulin concentrations have been demonstrated in goats fed a diet with the highest levels of concentrate (Todini et al, 2007), and in sheep fed a high energy diet for six days (Vinoles et al, 2005) or fed with a diet covering twice their maintenance requirements (Zhang et al, 2005). On the other hand, Scaramuzzi et al (2006) reported decreased insulin levels in sheep with negative energy balance while Ollier et al (2007) reported significantly lower blood plasma insulin concentrations in goats after a 48 h food deprivation.…”

Section: In Goats Aftermentioning

confidence: 92%

The effect of long term under- and over-feeding on milk and plasma fatty acids profile and on insulin and leptin concentrations of goats

Tsiplakou

Chadio

Papadomichelakis

et al. 2012

International Dairy Journal

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Pre- and post-feeding plasma gastrin-17 and insulin concentrations and feed intake in female goats during different physiological stages

Cited by 12 publications

References 37 publications

Effects of field bean (Vicia faba L. var. minor) dietary supplementation on plasma thyroid hormones, insulin, insulin‐like growth factor‐1 concentrations and mohair characteristics in growing Angora goat kids

Effects of field bean (Vicia faba L. var. minor) dietary supplementation on plasma thyroid hormones, insulin, insulin‐like growth factor‐1 concentrations and mohair characteristics in growing Angora goat kids

The reproductive performance of female goats treated with melatonin is not improved after introduction to bucks displaying springtime sexual activity if these does are experiencing decreasing body weight/condition score

The effect of long term under- and over-feeding on milk and plasma fatty acids profile and on insulin and leptin concentrations of goats

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