Two experiments were conducted with the opioid antagonist naloxone to determine the effect of opioid receptor blockade on hormone secretion in postpartum beef cows. In Exp. 1, nine anestrous postpartum beef cows were used to measure the effect of naloxone on serum luteinizing hormone (LH), cortisol and prolactin concentrations. Cows received either saline (n = 4) or 200 mg naloxone in saline (n...

objective: oxidation of oils has an important effect on nutritional and organoleptic properties of foodstuffs. nowadays, new tendency has created a necessity to use natural compounds such as essential oils for producing functional foods. in this study, antioxidant, antifungal, and organoleptic properties of zataria multiflora boiss.(zmeo) and cinnamon zeylanicum essential oils (czeo) have been ...

The main objective of this study was to evaluate the effect of dietary inclusion of wheat or corn as the main source of starch in prepartum diets on colostrum composition, colostrum IgG1 and IgG2 concentrations, serum IgG1 and IgG2 concentrations of calves and efficiency of IgG1, IgG2 and total Ig absorption. For this purpose, thirty primiparous and twenty multiparous Holstein cows were used in...

Objective(s): This study was aimed to evaluate the effect of chitosan-zinc oxide (CH-ZnO) film containing pomegranate peel extract (PPE; 0.5, 1 and 1.5%) on survival of Listeria monocytogenes and Staphylococcus aureus in raw rainbow trout fillets during refrigerated storage for 12 days.Methods: Total polyphenolic contents of CH-ZnO films containing different concentrations of methanolic P...

Researchers have revealed many novel applications for plum and raisin products as functional natural bakery ingredients. Raisin and plum concentrate were incorporated into the bread formulation at different concentrations and their effects on the rheological, baking properties and shelf life of breads were evaluated. The results showed that the use of plum concentrate at 6% had the highest wate...

Blood samples were taken from four large- and four small-frame steers each month for 12 mo to study the effect of size on plasma hormone concentrations in cattle from 5 to 17 mo of age. The rate of gain and daily feed intake were 45% (P less than .05) and 51% (P less than .001) greater for the large steers. The large-frame steers had higher mean concentrations of growth hormone (P less than .00...

 Background: Essential oils of medicinal plants such as chamomile are very complex natural mixtures which can contain compounds at quite different concentrations and some of their components have antioxidant and antimicrobial activities in foodstuff. Objective: The antioxidant and antimicrobial effects of chamomile essential oil in cake preparation were evaluated during 75 days of storag...