2014
DOI: 10.1590/s1516-35982014000100004
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Abstract: -Forty-five non-lactating, pregnant Holstein animals (18 heifers and 27 multiparous cows; BW = 561±114 kg; BCS = 2.9±0.3; days pregnant = 110±56 d) were stratified by initial BW and BCS, and randomly assigned to receive daily (as-fed basis) 0.50 kg of ground corn plus 0.22 kg of kaolin (CON), calcium salts of saturated fatty acids (SFA) or polyunsaturated fatty acids (PF) for 14 d. Blood samples were collected on days 0, 7 and 14, immediately prior to (0 h) and 3, 6, 9 and 12 h after feeding, to determine the … Show more

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Cited by 5 publications
(4 citation statements)
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“…Sunflower seed supplementation did not have a significant effect on P4 concentrations. These results are in agreement with others who did not observe an increase in serum P4 concentrations when calcium salts of PUFA were added to the diets of dairy (Reis et al, 2012;Moriel et al, 2014) and beef cows (Lopes et al, 2011).…”
Section: Discussionsupporting
confidence: 93%
“…Sunflower seed supplementation did not have a significant effect on P4 concentrations. These results are in agreement with others who did not observe an increase in serum P4 concentrations when calcium salts of PUFA were added to the diets of dairy (Reis et al, 2012;Moriel et al, 2014) and beef cows (Lopes et al, 2011).…”
Section: Discussionsupporting
confidence: 93%
“…The results of the present study in terms of serum progesterone levels were found to be similiar with the reports of Ambrose et al (2006), Ghasemzadeh-Nava et al (2011 and Moriel et al (2014). In this case it could be interpreted that n-3 PUFA source used in this study may be converted to stearic acid, ie saturated state via biohydrogenation by rumen microorganisms for this different results (Staples et al 1998).…”
Section: Resultssupporting
confidence: 87%
“…Similarly, Moriel et al (2014) did not find any significant difference in serum progesterone levels of the groups in which dietary fatty acid was added to the rations and the control group to evaluate the effects of PUFA due to calcium salts on serum concentrations of progesterone and insülin in their study. Ghasemzadeh-Nava et al (2011) investigated the effects of polyunsaturated fatty acid addition to rations on plasma metabolites, ovarian function, and prostaglandin release in lactating cows.…”
Section: Resultsmentioning
confidence: 90%
“…These responses corn oil supplementation, increases the energy concentration of rations and thus promotes the production of steroid hormones (Santos et al 2008). There is evidence that indicates that after supplementation with lipids, blood serum and follicular cholesterol (Staples et al 1998) and progesterone increase (Moriel et al 2014), resulting in a longer middle life of the corpus luteum (Fontona and Torre 2016). Ghoreishi et al (2007) reported that an increase of plasma progesterone in sheep supplemented with fatty acids is especially important when these concentrations are maintenance in the luteal phase of the estrous cycle, because it generates a positive eect on pregnancy establishment and maintaining, since cholesterol is necessary for the synthesis of progesterone.…”
Section: Resultsmentioning
confidence: 99%