Effect of feeding allowance level on embryonic survival, IGF‐1, insulin, GH, leptin and progesterone secretion in early pregnancy gilts

Wu, De; Ai-rong, Zheng; Lin, Yan; Xu, Shengyu; Gao, Haiyan; Yong, Zhou

doi:10.1111/j.1439-0396.2008.00844.x

Cited by 20 publications

(6 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An increased feeding level might alter metabolic or endocrine pathways, or both, which could positively influence embryonic and fetal survival and development. An increased feeding level during early pregnancy increased GH and IGF-1 concentrations in plasma, as well as uterine flushings, which could directly or indirectly influence embryonic development and survival (De et al, 2009). For example.…”

Section: Discussionmentioning

confidence: 99%

An increased feed intake during early pregnancy improves sow body weight recovery and increases litter size in young sows1

Hoving

Soede

Peet–Schwering

et al. 2011

Journal of Animal Science

View full text Add to dashboard Cite

This study evaluated the effect of feeding level and protein content in feed in first- and second-parity sows during the first month of gestation on sow BW recovery, farrowing rate, and litter size during the first month of gestation. From d 3 to 32 after the first insemination, sows were fed either 2.5 kg/d of a standard gestation diet (control, n = 49), 3.25 kg/d (+30%) of a standard gestation diet (plus feed, n = 47), or 2.5 kg/d of a gestation diet with 30% greater ileal digestible AA (plus protein, n = 49). Feed intake during the experimental period was 29% greater for sows in the plus feed group compared with those in the control and plus protein groups (93 vs. 72 kg, P < 0.05). Sows in the plus feed group gained 10 kg more BW during the experimental period compared with those in the control and plus protein groups (24.2 ± 1.2 vs. 15.5 ± 1.2 and 16.9 ± 1.2 kg, respectively, P < 0.001). Backfat gain and loin muscle depth gain were not affected by treatment (P = 0.56 and P = 0.37, respectively). Farrowing rate was smaller, although not significantly, for sows in the plus feed group compared with those in the control and plus protein groups (76.6% vs. 89.8 and 89.8%, respectively, P = 0.16). Litter size, however, was larger for sows in the plus feed group (15.2 ± 0.5 total born) compared with those in the control and plus protein groups (13.2 ± 0.4 and 13.6 ± 0.4 total born, respectively, P = 0.006). Piglet birth weight was not different among treatments (P = 0.65). For both first- and second-parity sows, the plus feed treatment showed similar effects on BW gain, farrowing rate, and litter size. In conclusion, an increased feed intake (+30%) during the first month of gestation improved sow BW recovery and increased litter size, but did not significantly affect farrowing rate in the subsequent parity. Feeding a 30% greater level of ileal digestible AA during the same period did not improve sow recovery or reproductive performance in the subsequent parity.

show abstract

Section: Discussionmentioning

confidence: 99%

An increased feed intake during early pregnancy improves sow body weight recovery and increases litter size in young sows1

Hoving

Soede

Peet–Schwering

et al. 2011

Journal of Animal Science

View full text Add to dashboard Cite

show abstract

“…There were no treatment effects on the maintenance of pregnancy, litter size, embryo or fetal survival, although there were significant genotype effects. In previous studies of farm animals, both high ( 32 , 33 ) and low ( 34 , 35 ) nutritional planes after conception have been associated with reduced embryo survival. However, in sheep, this appears to be related to maternal maturity as effects of high nutrition reduced conception in adolescent but not mature ewes ( 36 ) and is also influenced by the timing of nutritional manipulations in pigs ( 37 ) .…”

Section: Discussionmentioning

confidence: 93%

The effect of gestational undernutrition on maternal weight change and fetal weight in lines of mice selected for different growth characteristics

Dwyer¹,

Moinard

McIlvaney

et al. 2011

Br J Nutr

View full text Add to dashboard Cite

The present study investigated whether the genetic growth characteristics (fast or slow growing, lean or fat) of a mother influences her ability to partition nutrients to developing offspring. A total of sixty-one pregnant mice of three selected lines were used: fast-growing, relatively fat (FF, n 19); fast-growing, relatively lean (FL, n 23); and normal growth, relatively lean (NL, n 19). On day 1 of pregnancy, mice were given either ad libitum access to food (control (C): n 32) or pair-fed at 80 % of C intake (restricted (R): n 29). Feed intake and dam weight were measured daily. The weight of the mouse, organs, mammary tissue and the weight of fetuses and placentas were determined at day 18 of gestation. Overall, R dams gained less than half the weight of C dams during gestation. NL dams gained the most weight, and FF dams gained the least weight (P,0·001). R dams in the fast-growing lines mobilised significantly more body fat during gestation than the NL line (P, 0·001) and had a greater reduction in mammary tissue growth. The relative weight of the litter increased in R dams of the FF line but was reduced in both the lean lines. Undernutrition reduced fetal and placental weight, and reduced placental efficiency in all the lines. The reduction was least in the FF line and greatest in the FL line. The data suggest that selection of animals for different growth characteristics alters their response to undernutrition during pregnancy, the relatively fat line was better able to buffer its offspring from the effects of undernutrition than the lean lines, regardless of their underlying rate of growth.

show abstract

“…The effects of feeding levels on embryo survival rate varied in previous studies. Some early studies showed that a high feeding level during early gestation can reduce circulating progesterone concentration and negatively impact embryo survival rate in sows (Jindal et al, 1997;Virolainen et al, 2005;De et al, 2009). The reduction in circulating progesterone as a result of a high feeding level was believed to be caused by increased progesterone clearance by the liver (Prime and Symonds, 2009).…”

Section: Discussionmentioning

confidence: 99%

Compensatory feeding during early gestation for sows with a high weight loss after a summer lactation increased piglet birth weight but reduced litter size

Liu¹,

Braden²,

Smits³

et al. 2021

Journal of Animal Science

View full text Add to dashboard Cite

Sows mated in summer produce a greater proportion of born-light piglets (<1.1 kg) which contributes to increased carcass fatness in the progeny population. The reasons for the low birth weight of these piglets remain unclear, and there have been few successful mitigation strategies identified. We hypothesized that: (1) the low birth weight of progeny born to sows mated in summer may be associated with weight loss during the previous summer lactation; and (2) increasing early gestation feed allowance for the sows with high lactational weight loss in summer can help weight recovery and improve progeny birth weight. Sows were classified as having either low (av. 1%) or high (av. 7%) lactational weight loss in their summer lactation. All the sows with low lactational weight loss (LLStd) and half of the sows with high lactational weight loss received a standard gestation feeding regime (HLStd) (2.6 kg/d; d 0-30 gestation), whereas the rest of the sows with high lactational weight loss received a compensatory feed allowance (HLComp) (3.5 kg/d; d 0-30 gestation). A comparison of LLStd (n=75) vs HLStd sows (n=78) showed that this magnitude of weight loss over summer lactation did not affect the average piglet or litter birth weight, but such results may be influenced by the higher litter size (P = 0.032) observed in LLStd sows. A comparison of HLStd vs HLComp (n=81) sows showed that the compensatory feeding increased (P = 0.021) weight gain of gestating sows by 6 kg, increased (P = 0.009) average piglet birth weight by 0.11 kg, tended to reduce (P = 0.054) the percentage of born-light piglets from 23.5% to 17.1% but reduced the litter size by 1.4 (P = 0.014). A sub-group of progeny stratified as born-light (0.8-1.1 kg) or -normal (1.3-1.7 kg) from each sow treatment were monitored for growth performance from weaning until 100 kg weight. The growth performance and carcass backfat of progeny were not affected by sow treatments. Born-light progeny had lower feed intake, lower growth rate, higher G:F, and higher carcass backfat than born-normal progeny (all P < 0.05). In summary, compensatory feeding from d 0-30 gestation in the sows with high weight loss during summer lactation reduced the percentage of born-light progeny at the cost of a lower litter size, which should improve growth rate and carcass leanness in the progeny population born to sows with high lactational weight loss.

show abstract

Effect of feeding allowance level on embryonic survival, IGF‐1, insulin, GH, leptin and progesterone secretion in early pregnancy gilts

Cited by 20 publications

References 35 publications

An increased feed intake during early pregnancy improves sow body weight recovery and increases litter size in young sows1

An increased feed intake during early pregnancy improves sow body weight recovery and increases litter size in young sows1

The effect of gestational undernutrition on maternal weight change and fetal weight in lines of mice selected for different growth characteristics

Compensatory feeding during early gestation for sows with a high weight loss after a summer lactation increased piglet birth weight but reduced litter size

Contact Info

Product

Resources

About