Serum and milk folates during the first two gestations and lactations in Romanov, Finnsheep, and Suffolk ewes.

Girard, C.L.; Castonguay, F.; Fahmy, M. H.; Matte, J. J.

doi:10.2527/1996.7471711x

Cited by 15 publications

(19 citation statements)

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“…Vitamin B 12 concentrations were unaffected (P 5 0.58) by choline and vitamin E supplementation; however, a significant time effect was observed after the second week of lactation, when B 12 levels started to increase in all groups. The folate trends we observed are broadly similar to those reported in Saanen goats (Ford et al, 1972) and also in ewes (Girard et al, 1996). In both these studies, plasma folate peaked around parturition.…”

Section: Resultssupporting

confidence: 77%

Rumen-protected choline and vitamin E supplementation in periparturient dairy goats: effects on milk production and folate, vitamin B12 and vitamin E status

Pinotti

Campagnoli²,

Dambrosio³

et al. 2008

Animal

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We investigated the effects of rumen-protected choline (RPC) and vitamin E (VITE) administration on milk production and status of folate, vitamin B 12 and vitamin E during the periparturient period of dairy goats. Forty-eight Saanen multiparous goats were selected for the 72-day experiment, being moved to a maternity pen 30 days before expected parturition and assigned to one of the four experimental groups: control (CTR), no choline or vitamin E supplementation; choline (RPC), supplemented with 4 g/day choline chloride in rumen-protected form; vitamin E (VITE), supplemented with 200 IU/day vitamin E in rumen-protected form; and choline and vitamin E (RPCE), supplemented with 4 g/day RPC chloride and 200 IU/day vitamin E. Supplements were administered individually before the morning feed to ensure complete consumption, starting 30 days before kidding and continuing for 35 days after. During the experiment, milk yield and 4% fat-corrected milk (FCM) yield were, respectively, 210 and 350 g/day higher in RPC-supplemented goats than in non-supplemented goats. Milk fat concentration and fat yield were also increased by RPC treatment. Milk yield and composition were unaffected by vitamin E supplementation. There were no significant interactions between RPC and VITE for any of the variables measured. Plasma metabolites did not differ between treatments before and after kidding except that plasma folate at parturition was higher in RPC-supplemented goats. Neither choline nor vitamin E affected vitamin B 12 plasma concentrations, while a time effect was evident after the second week of lactation, when B 12 levels in each treatment group started to increase. Vitamin E administration resulted in plasma a-tocopherol levels that were 2 to 2.5 times higher than in non-supplemented goats. Overall, these results suggest that greater choline availability can improve milk production and methyl group metabolism in transition dairy goats.

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Section: Resultssupporting

confidence: 77%

Rumen-protected choline and vitamin E supplementation in periparturient dairy goats: effects on milk production and folate, vitamin B12 and vitamin E status

Pinotti

Campagnoli²,

Dambrosio³

et al. 2008

Animal

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“…In sheep, serum concentrations of folates decrease between mating and 60 d of gestation and increase before lambing time (Girard et al 1996), following a pattern similar to that observed in sows (Matte and Girard 1999). Moreover, the decrease in serum concentrations of folates observed between mating and 60 d of gestation is greater in prolific breeds (Girard et al 1996).…”

supporting

confidence: 62%

“…Moreover, the decrease in serum concentrations of folates observed between mating and 60 d of gestation is greater in prolific breeds (Girard et al 1996). These results suggest that the demand for folic acid might be increased during gestation in ewes.…”

mentioning

confidence: 73%

Response of serum concentrations of folates to dietary supplements of folic acid given to ewes during gestation

Girard

Castonguay²,

Matte³

1999

Can. J. Anim. Sci.

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. 1999. Response of serum concentrations of folates to dietary supplements of folic acid given to ewes during gestation. Can. J. Anim. Sci. 79: 387-389. Serum folates were determined during the 24 h following the ingestion of 0, 130, 260 or 520 mg of folic acid at 12, 61 and 131 d of gestation in 38 ewes. The response of serum folates increased with the dose ingested (P < 0.0001) but decreased as gestation progressed (P < 0.005).

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“…Moreover, genotypes of different prolificacy did not influence the response of plasma folates to supplementation. However, the prolific crossbred ewes used in this study had smaller litters than the prolific pure breeds studied by Girard et al (1996). Folic acid supplementation produced an overall increase in red cell folate concentration (Fig.…”

Section: Effect Of Dietary Supplements Of Folic Acid On Concentrationmentioning

confidence: 99%

“…In a previous study, Girard et al (1996) showed that, in the absence of folic acid supplementation, ewes of prolific breeds had higher plasma concentrations of folates than less prolific ewes (Romanov Finn Suffolk) at the time of mating and during gestation. In the present study, there were no differences in plasma folate concentrations between prolific and non-prolific ewes in the control group.…”

Section: Effect Of Dietary Supplements Of Folic Acid On Concentrationmentioning

confidence: 99%

Effects of dietary supplements of folic acid on reproductive performance in ewes

Méthot¹,

Girard²,

Matte³

et al. 2008

Can. J. Anim. Sci.

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. W. 2008. Effects of dietary supplements of folic acid on reproductive performance in ewes. Can. J. Anim. Sci. 88: 489Á497. The objective of this project was to assess the impact of periconceptional folic acid supplementation on the reproductive performance of prolific and non-prolific ewes, in the estrous and anestrous seasons. Two initial trials took place during the estrous season at two experimental sites where 38 Dorset and 39 half-Finn half-Dorset ewes (site A) as well as 80 Dorset ewes (site C) were divided into two groups receiving either 0 or 210 mg ewe(1 d (1 of folic acid over a period which extended from 21 d premating to 30 d postmating. Three other trials were conducted in the anestrous season where 80 Dorset ewes (site A), 56 half-Romanov ewes (site B) and 78 Dorset ewes (site C) were subjected to the same protocol as the one used in the breeding season. In all the trials, the folic acid supplement increased plasma and red cell folates, but had no effect on fertility, embryonic mortality, or the size or weight of the litter at birth. Folic acid supplementation did not improve the reproductive performance of prolific and nonprolific ewes, either in the estrous season or in the anestrous period. (1 jour (1 d'acide folique sur une pe´riode qui s'est e´tendue de 21 j pre´ce´dant la saillie jusqu'a`30 j apre`s la saillie. Trois autres essais ont e´te´re´alise´s en contre-saison sexuelle ou`80 brebis Dorset (site A), 56 demi-Romanov (site B) et 78 Dorset (site C) ont e´te´soumises au meˆme protocole que celui re´alise´en saison sexuelle. Dans tous les essais, le supple´ment d'acide folique a augmente´les folates plasmatiques et e´rythrocytaires, mais n'a eu aucun effet sur la fertilite´, la mortalite´embryonnaire, la taille et le poids de la porte´e a`la naissance. Les performances reproductives des brebis prolifiques et non prolifiques n'ont pas e´te´ame´liore´es par la supple´mentation en acide folique, autant en saison qu'en contre-saison sexuelle.Mots clé s: Brebis, reproduction, vitamines, acide folique, fertilite´, prolificiteT he sheep industry is an emerging agricultural sector in North America. Unfortunately, sheep farm profitability is often low owing to the low productivity of livestock operations. Of the various means available to producers to increase their income, increasing the fertility and prolificacy of breeding ewes are certainly at the top of the list of foreseeable short-term solutions.In the estrous season, ewe productivity is limited primarily by the low number of lambs born per ewe lambing (prolificacy). Widespread use of non-prolific breeds, which often give birth to only one lamb per lambing, remains the main reason for this low productivity. However, in sheep, 20 to 40% of fertilized ova are lost during gestation (Edey 1969;Ashworth 1995), primarily during the first month of gestation (Quinlivan et al. 1966). While, in the estrous season, this loss of embryos reduced the number of lambs born per lambing, in the anestrous season, the embryonic mortality could not only affect p...

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Serum and milk folates during the first two gestations and lactations in Romanov, Finnsheep, and Suffolk ewes.

Cited by 15 publications

References 0 publications

Rumen-protected choline and vitamin E supplementation in periparturient dairy goats: effects on milk production and folate, vitamin B12 and vitamin E status

Rumen-protected choline and vitamin E supplementation in periparturient dairy goats: effects on milk production and folate, vitamin B12 and vitamin E status

Response of serum concentrations of folates to dietary supplements of folic acid given to ewes during gestation

Effects of dietary supplements of folic acid on reproductive performance in ewes

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