INFLUENCE OF FEEDING LEVEL ON FSH AND LH SECRETION PATTERNS DURING LACTATION, ON UTERUS AND FOLLICLE DEVELOPMENT AFTER WEANING IN SOWSReport as inadecuate




INFLUENCE OF FEEDING LEVEL ON FSH AND LH SECRETION PATTERNS DURING LACTATION, ON UTERUS AND FOLLICLE DEVELOPMENT AFTER WEANING IN SOWS - Download this document for free, or read online. Document in PDF available to download.

Krmiva : Review for animal feeding, production and feed technology, Vol.50 No.1 March 2008. -

Feeding during lactation has been shown to effect physiology of reproduction in sows. A study was conducted to define the hormonal patterns of FSH and LH in lactation 21 days, the development of uterus and follicles after weaning in primiparous sows fed restricted RE or ad libitum AL. 14 sows were used; 7 in each group AL and in group RE ≈70% of the diet of AL-sows. An intravenous catheter was inserted on day 6-7 post partum pp. Blood samples were collected on days 12, 15 and 18 pp. FSH and LH were analysed by RIA. Daily ultrasonography of the ovaries between day 8 and 20-21 pp was used on a few animals per group to monitor follicular growth. All sows were slaughtered either 1 or 7 days after weaning. Mean daily feed intake during lactation was 3.9 kg in AL- and 2.7 kg in RE-sows. FSH concentrations were similar in AL- and RE-sows on day 12 pp, but higher in AL-sows on day 15 and day 18 pp P



Author: Martin Wähner - ; Anhalt University of Applied Sciences, Dep. Agriculture, Strenzfelder Allee 28, D – 06406 Bernburg, Germany

Source: http://hrcak.srce.hr/



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