Influence of the nutritional status on ovarian development in female pigs

Prunier, Armelle; Quesnel, Hélène

doi:10.1016/s0378-4320(00)00093-2

Cited by 59 publications

(31 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Blood concentrations of insulin and IGF-I are considered to be important for mediating the effect of nutrition on the ovaries. In mammals, insulin stimulates in vitro the uptake and utilization of nutrients, granulosa cell proliferation and differentiation, either alone or in synergy with gonadotropins (Prunier and Quesnel, 2000b).…”

Section: Sow Nutrition As An Opportunity To Improve Within-litter Unimentioning

confidence: 99%

“…For instance, increasing plasma insulin during the late luteal phase or the early follicular phase, increased ovulation rate irrespective of changes in plasma LH, may be related to the ability of insulin to decrease atresia in small-and medium-sized follicles (Prunier and Quesnel, 2000b). On the basis of another literature review, Prunier and Quesnel (2000a) concluded that insulin has a positive influence on the nutrient supply, growth and development of follicular cells; however, that direct evidence is still missing to demonstrate that a decrease in insulin secretion due to feed restriction is responsible, even in part, for a decrease in follicle development and ovulation in pigs.…”

Section: Sow Nutrition As An Opportunity To Improve Within-litter Unimentioning

confidence: 99%

See 1 more Smart Citation

Effects of sow nutrition during gestation on within-litter birth weight variation: a review

Campos

Silva²,

Donzele

et al. 2012

Animal

118

View full text Add to dashboard Cite

The increasing demand for efficiency in pork production requires great specialization of all sectors involved in this activity. In this context, the development of strategies that could reduce undesirable traits related with negative effects on piglet survival and postnatal growth and development are essential for the pig industry. Currently, special attention is given to variation in birth weight, as some evidences suggest an increased within-litter birth weight variation in modern sows. This variation has been shown to be associated with preweaning mortality, variable weights at weaning and deteriorated growth performance, which results in economic losses and lower efficiency. Therefore, understanding the factors that can influence the events that occur during gestation and that have an impact on the fetal growth and development are important to achieve better efficiency and also to develop strategies that can be used to achieve increased within-litter uniformity of piglet birth weight. This study concludes that even at a given placental size, fetal growth may vary because of differences in placental vascularization and efficiency. Feeding extra feed or energy during late gestation only marginally improves birth weight, and positive effects are not consistent between different studies. The detrimental effects of protein restriction on fetal growth during early gestation may be due to altered placental and endometrial angiogenesis and growth, which leads to a reduction in placental-fetal blood flow, nutrient supply from mother to the fetuses and ultimately to fetal growth retardation. The number of studies that attempted to influence within-litter birth weight variation by means of sow nutrition during gestation is limited. Therefore, more research concerning sow nutrition during gestation associated with the provision of balanced diets to meet requirements of the sows and fetuses are still required. This knowledge may subsequently provide starting points for the design of nutritional strategies that can influence within-litter birth variation.

show abstract

Section: Sow Nutrition As An Opportunity To Improve Within-litter Unimentioning

confidence: 99%

Section: Sow Nutrition As An Opportunity To Improve Within-litter Unimentioning

confidence: 99%

Effects of sow nutrition during gestation on within-litter birth weight variation: a review

Campos

Silva²,

Donzele

et al. 2012

Animal

118

View full text Add to dashboard Cite

show abstract

“…However, the measured ER data do not support this observation. The physical body condition of the sows is very important for the reproductive cycle [27,28], and major back fat losses during lactation may negatively influence the outcome of their estrous performance. However, it is unlikely that differences in metabolic stage alone can explain the aforementioned discrepancies in the ER data, because there were no differences in back fat loss between the studied groups (data not shown).…”

Section: Paritymentioning

confidence: 99%

Effect of a GnRH analogue (Maprelin) on the reproductive performance of gilts and sows

Jong

Kauffold²,

Engl³

et al. 2013

Theriogenology

View full text Add to dashboard Cite

a b s t r a c tThe ability of peforelin (l-GnRH-III) to stimulate follicular growth, FSH release, and estrus in gilts after altrenogest treatment and in sows after weaning was investigated. In three farrow-to-wean herds, with at least 600 sows and average production performance, 216 gilts, 335 primiparous, and 1299 pluriparous sows were randomly allocated to three treatments: peforelin (M group: Maprelin), eCG (F group: Folligon), and physiological saline solution (C group). Animals were treated 48 hours after their last altrenogest treatment (gilts) or 24 hours after weaning (sows). The weaning-to-estrus interval, estrus duration, estrus rate (ER), pregnancy rate, and total born (TB), live born, and stillborn (SB) numbers were recorded and compared between treatments for the different parity groups (gilts and primiparous and pluriparous sows). Follicle sizes were measured in representative animals from each group on the occasion of their last altrenogest treatment or at weaning, and also on the occasions of their first (FS1) and second (FS2) attempted inseminations. Blood samples were taken to determine FSH concentrations at weaning and 2 hours after injection, and progesterone concentrations 10 days after the first insemination attempt. The relative change in FSH concentrations was calculated. Significant differences were found for ER within 7 days of weaning in pluriparous sows (95%, 91%, and 90% for the M, F, and C groups, respectively, P ¼ 0.005). Gilts in the F-group had high TB numbers, and pluriparous sows in the M group had high SB numbers (TB gilts ¼ 13.6, 15.4, and 14.9 [P ¼ 0.02] and SB pluriparous sows ¼ 1.8, 1.4, and 1.7 [P ¼ 0.05] for the M, F, and C groups, respectively). The M group had the highest FS1 (for gilts) and FS2 (for pluriparous sows) values: FS1 ¼ 5.4, 4.9, and 4.9 mm [P ¼ 0.02] and FS2 ¼ 6.8, 5.3, and 6.3 mm [P ¼ 0.03] for the M, F, and C groups, respectively. There were no significant differences between the different treatments within each parity group with respect to any of the other variables. Overall, peforelin treatment had small but positive effects on the ER and follicle growth in certain parity groups but did not seem to affect litter sizes or FSH and progesterone levels in sows on the occasions of the corresponding examinations.

show abstract

“…Voor een goede follikelontwikkeling zijn hoge insuline en IGF-1 niveaus belangrijk (Cosgrove and Foxcroft, 1996;Wientjes, 2013). De insuline en IGF-1 productie kunnen worden gestimuleerd door de zeugen op een hoog voerniveau te voeren (Zak et al, 1997;Prunier et al, 2000) en door insuline stimulerende voercomponenten zoals zetmeel en suikers (Wientjes, 2013) te verstrekken. Om een goede follikelontwikkeling te stimuleren zijn alle zeugen in ons onderzoek daarom voor inseminatie op een hoog voerniveau (7,5 kg/dag) gevoerd.…”

Section: Worpgrootte In De Volgende Worpunclassified

Effect van voersamenstelling bij drachtige lacterende zeugen en voerniveau begin dracht op reproductie en conditie

Peet–Schwering¹,

Verheijen²,

Binnendijk³

et al. 2016

View full text Add to dashboard Cite

Effect van voersamenstelling bij drachtige lacterende zeugen en voerniveau begin dracht op reproductie en conditie RAPPORT 952 Effect van voersamenstelling bij drachtige lacterende zeugen en voerniveau begin dracht op reproductie en conditie Effect of feed composition in gestating lactating sows and feeding level during early gestation on reproduction and condition Tijdens de laatste 8 dagen van de 6-weekse lactatie was er een tendens tot minder gewichtsverlies bij de zeugen op het zetmeelrijke voer (9 versus 13 kg; p = 0,11).Het speengewicht en de groei en de voeropname van de biggen tijdens de laatste 8 dagen van de 6-weekse zoogperiode waren vergelijkbaar bij de zeugen die het zetmeelrijke of het vetrijke lactovoer kregen.De melkproductie van de zeugen bleef tijdens de laatste 8 dagen van de 6-weekse lactatie op een hoog niveau van ca. 11 kg/d.Er waren tussen de zeugen die het zetmeelrijke of vetrijke lactovoer kregen geen significante verschillen in de gehalten aan droge stof, ruw eiwit, vet en lactose in de melk op de dag van spenen. Er waren wel verschillen in de vetzuursamenstelling.Het progesterongehalte in de melk van de drachtige zeugen tendeerde naar hoger bij de zeugen die het zetmeelrijke lactovoer kregen (16,2 versus 15,3 ng/ml; p = 0,07).Bij de biggen van de zeugen op het vetrijke voer kwam meer diarree voor tijdens de laatste 8 dagen van de 6-weekse lactatie dan bij de biggen van de zeugen op het zetmeelrijke voer.Het totaal aantal geboren biggen en het aantal levend en dood geboren biggen in de volgende worp verschilden niet significant tussen de zeugen die het zetmeelrijke of vetrijke lactovoer kregen. Het geboortegewicht van de biggen was numeriek, maar niet significant, hoger bij de zeugen die het zetmeelrijke lactovoer kregen (1,35 versus 1,27 kg; p = 0,12).

show abstract

Influence of the nutritional status on ovarian development in female pigs

Cited by 59 publications

References 68 publications

Effects of sow nutrition during gestation on within-litter birth weight variation: a review

Effects of sow nutrition during gestation on within-litter birth weight variation: a review

Effect of a GnRH analogue (Maprelin) on the reproductive performance of gilts and sows

Effect van voersamenstelling bij drachtige lacterende zeugen en voerniveau begin dracht op reproductie en conditie

Contact Info

Product

Resources

About