جستجوی مقالات مرتبط با کلیدواژه « organic chromium » در نشریات گروه « علوم دام »

This study was conducted to investigate the effects of chromium-methionine (Cr-Met) supplementation on the blood and immune parameters of broiler under acute stress. A total of one hundred twenty six broilers were allocated to 3 treatments and 3 replicates (14 birds per replicate) in a completely randomized design. Treatments were: 1) negative control: i.e. basal diet without stress and Cr-Met, 2) positive control: basal diet with stress and without Cr-Met, 3) basal diet with stress and supplemented with 1000 ppb Cr-Met. Stress was induced from day 18 by addition of 1.5 mg dexamethasone per kg of the diet for one week followed by a withdrawal period until day 46. Blood samples were collected on day 25 and 46 of age. Results showed that stress increased blood glucose and lipid concentrations of serum (P

In order to evaluate the effect of organic chromium on performance of twin-bearing ewes, 16 pregnant Afshari ewes (91.8 ±4.5 kg BW and 116.9 ± 1.7 d in pregnancy) were used in a completely randomized design and were individually assigned to one of two diets where one of them contained no chromium and another on contained 1 mg/ kg DM of organic chromium. Ewes were fed a TMR diet twice a day. Dry matter intake, blood metabolites, ewe’s BW, lamb’s BW and average daily gain were measured during experiment. Despite the fact that prepartum DMI was not different between treatments, postpartum DMI tended to be higher for chromium fed ewes (P<0.1). Although there was no difference in BW of prepartum treatments, chromium fed ewes numerically had lower BW loss after lambing compared to control group. Despite the lack of difference in birth BW of lambs, average daily gain was greater in control group compared to chromium fed group on day 10 after birth (P<0.05), whereas there was no difference between treatments on d 30 and 60 after lambing. Average daily gain between day 0 to10 in control group tended to be higher (P<0.06), and in chromium group between day 30 to 60 was higher. Organic chromium supplementation did not influence prelambing blood metabolites, but post lambing total protein (P>0.05) and albumin (P<0.05) and triglyceride (P>0.05) was higher in chromium fed ewes compared to control group. The obtained results from the current study show that chromium supplementation in twin-bearing pregnant ewes during preparturient period, which is a critical and vital period in terms of ewes and their lamb's performance and health, can improve the post lambing performance by positively affecting blood metabolites and increasing post partum dry matter intake.