The influence of synergistic action of folic acid, beta-carotene and vitamin A on embryo mortality in primiparous and multiparous sows

• Autorzy: Pres J. , Orda J. , Wiliczkiewicz A. , Fuchs B.
• Języki publikacji: EN

Abstrakty

EN

The experiments were carried out to estimate the possibilities of stimulation of the fecundity of sows by administering Vitamin A, ß-carotene and folic acid as basic feed supplement. It has been expected that the synthetic ß-carotene and Vitamin A will increase inhibits embryo mortality. In the first experiment animals were primiparous and in the second multiparous sows. All animals were slaughtered on 30th day of gestation. The reproductive tracts were recovered and dead, partially resorbed and viable embryos were counted. Also weight of ovaries and number of corpora lutea evaluated and on this basis were estimated ovulation rate. In the blood samples concentration of folates, A1AT and AspAT activity, Ca, P and urea quantity were estimated. Addition 5 mg/kg folic acid to basal diet for primiparous sows decrease number of dead fetuses and simultaneously administering 200 mg ß-carotene/animal/day significantly increase number of presumably living fetuses (from 8.3 to 10.8). Addition 60000 IU of Vitamin A haven't had significant influence for the number of dead or living fetuses, while increased level of it was noted in liver. Under the synthetic ß-carotene treatment multiparous sows, the higher number of viable fetuses, number of corpora lutea and weight of ovaries than in the control group were also observed. Extra addition of folic acid decreases significantly (P < 0.05) number of dead fetuses. Similar effects are obtained by replacing ß-carotene+folic acid with Vitamin A+folic acid for multiparous sows. The obtained result indicates that the addition of the synthetic ß-carotene to the diet for sows before and after mating increases ovulation rate. The simultaneous folic acid supplement from the time of mating inhibits embryo mortality.

Słowa kluczowe

EN

vitamin A; beta-carotene; multiparous sow; mortality; primiparous sow; folic acid; embryo; sow

• Wydawca: -
• Czasopismo: Polish Journal of Veterinary Sciences
• Rocznik: 1999
• Tom: 02
• Numer: 2
• Opis fizyczny: p.93-98

Twórcy

autor

Pres J.

• Agricultural Academy, Wroclaw, Poland

autor

Orda J.

autor

Wiliczkiewicz A.

autor

Fuchs B.