farnoosh zanghishe; mohammad mehdi moeini; Fardin Hozhabri
Volume 25, Issue 2 , July 2023, , Pages 155-168
Abstract
Introduction Efficient management methods should be used to achieve optimal production of livestock products in breeding, reproduction and feeding stages. If proper nutritional management is not performed correctly at the end of pregnancy, it will have adverse effects on the amount of dry matter intake ...
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Introduction Efficient management methods should be used to achieve optimal production of livestock products in breeding, reproduction and feeding stages. If proper nutritional management is not performed correctly at the end of pregnancy, it will have adverse effects on the amount of dry matter intake and the metabolic condition of the animal during early lactation. In all animal tissues, there are variable proportions of mineral elements and vitamins; the concentration of these elements must be within the specified range in order to protect the functional and structural activity of the tissues and to keep the growth, health and productivity of the animal without reduction or damage. Materials and Methods In order to evaluate the effects of selenium and vitamin E supplements administered orally or by injection in late pregnancy on the concentration of selenium, copper, zinc and iron in the blood and milk of ewes and the blood of their lambs this experiment were conducted using 18 pregnant ewes of the first lambing in a completely randomize design with three treatments and six replications. Experimental treatments included: 1) Control (receiving a dose of 10 ml of selenium and vitamin E supplement by injection two weeks before delivery; each ml contains 0.5 mg of sodium selenite and 50 mg of vitamin E). 2) selenium and vitamin E (receiving 0.3 mg of selenium and 50 mg of vitamin E mixed with diet daily per kilogram of dry matter intake) orally from four weeks before delivery and, 3) Injection of 10 ml selenium and vitamin E supplement in two stages including four weeks before calving (five ml) and two weeks before calving (five ml).The Blood samples were collected from the ewes before the administration of supplements and at the time of delivery. Blood was collected from newborn lambs before consuming colostrum and 14 days after birth. Selenium, copper, zinc and iron concentrations were measured in colostrum and milk. Results and Discussion The results of the experiment indicated that the average weight of the ewes two weeks after lambing for ewes that received selenium and vitamin E orally was higher than the control (P<0.05). No significant difference was observed in the concentration of iron, copper and zinc in the blood serum of ewes or lambs. The concentration of selenium in the serum of ewes and their lambs and the colostrum of ewes that received selenium and vitamin E orally was higher than other ewes. No significant difference was observed between the experimental treatments in terms of the average body condition score (BCS) until the time of delivery, but two weeks after delivery, BCS in the orally supplement of selenium and vitamin E treatment was higher than that of control group.
Conclusion The results of the present study showed that in order to improve the status of selenium in livestock and the convenience of supplement administration, the use of orally selenium and vitamin E supplements is preferred by its injection method.
Sayedeh Forough Hosseini Vardanjani; Javad Rezaei; said dehkordi; Yousef Rouzbehan
Volume 20, Issue 4 , February 2019, , Pages 539-551
Abstract
In this study, the effect of different levels of ZnO, nano-ZnO and Zn-methionine, in pre- and post-partum diets, on feed intake, Zn absorption, microbial protein, as well as metabolites and IgG, IgM and IgA in the blood and colostrum of ewes and suckling lambs were investigated. Experiment was conducted ...
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In this study, the effect of different levels of ZnO, nano-ZnO and Zn-methionine, in pre- and post-partum diets, on feed intake, Zn absorption, microbial protein, as well as metabolites and IgG, IgM and IgA in the blood and colostrum of ewes and suckling lambs were investigated. Experiment was conducted from 50 days before to 30 days after lambing. Sixty pregnant Khorasan-Kurdish ewes were divided into six experimental groups (10 replicates) in a randomized complete block design. Experimental diets contained ZnO, nano-ZnO and Zn-methionine to meet NRC recommendation, or higher than NRC-recommended level. Replacing ZnO with nano-ZnO or Zn-methionine had no effect on different variables in ewes, but increasing Zn level in the diet of ewes resulted in an increment of daily Zn intake, a decline of Zn absorption coefficient and an increase of fecal Zn excretion (P<0.05). Feeding mother ewes with different Zn sources had no effect on blood metabolites and immunoglobulins of the suckling lambs. Overall, nano-ZnO had no positive or negative effects on ewes and suckling lambs and using Zn-methionine instead of ZnO did not improve the metabolic condition of the animals. On the other hand, the increasing dietary Zn concentration increased zinc excretion in the environment. In practice, using the conventional ZnO at the NRC recommendation level is sufficient to provide the requirement, and to maintain the immunity of pre- and post-partum ewes and there is no need for additional Zn from other sources.
zabih allah abdolmaleki; Manouchehr Souri; mohamad mehdi moeini; armin towhidi; Yadollah Chashnidel
Volume 19, Issue 4 , March 2018, , Pages 829-845
Abstract
Forty multiparous Holstein cows were used to investigate the effect of supplementary rumen protected Conjugated linoleic Acid (CLA) with injectable Se and vitamin E (E-Se) supplement on immune system in Holstein cows and their calve in a commercial dairy farm at Ghazvin province. The animals were divided ...
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Forty multiparous Holstein cows were used to investigate the effect of supplementary rumen protected Conjugated linoleic Acid (CLA) with injectable Se and vitamin E (E-Se) supplement on immune system in Holstein cows and their calve in a commercial dairy farm at Ghazvin province. The animals were divided in four experimental groups in a complete randomize design based on factorial. The experimental groups were: basal diet (Control), basal diet plus injectable E-Se Supplement, basal diet plus CLA 100 g/day per each cow) and basal diet plus CLA 100 g/day per each cow and Injectable E-Se Supplement. The dose of injectable E-Se supplement was 40 ml/cow. The injection has done muscularly in each cow in days, -21, 1, 14, 28 and 42 after calving. Blood Samples of cows collected at days of injection. Blood samples of calves collected at birthday pre feeding colostrum and 7 days after birth. The result showed CLA supplement had no significantly effect on mean concentration of Immunoglobulin G (IgG), Total antioxidant status (TAS) and Malondialdehyde (MDA) in calves on days 1 and 7 (P>0.05). Effect of injectable E-Se Supplement on TAS concentration of Calve's Plasma had was significant (P>.05). CLA and injectable E-Se Supplements had no significant effect on mean concentration of IgG, TAS and MDA of cow`s colostrum (P>0.05). The CLA and E-Se supplements had no significant effect on TAS concentration and hematology Parameters of dairy cow (P>0.05). Based on acquried result use of CLA supplement in transition period had no effect on immune system of cows and their calves. Supplementary injection of E-Se significantly improved total antioxidant status of newborn calves.
Ali Kiani
Volume 19, Issue 3 , November 2017, , Pages 557-567
Abstract
In this study, effect of lycopene and corn supplementation on quantity of colostrum and concentrations of IgG in blood and colostrum in pregnant ewes was investigated.A total of 40 multiparous single-bearing ewes (body weight 68 ±8.4 kg) during last month of gestation were fed with one of the ...
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In this study, effect of lycopene and corn supplementation on quantity of colostrum and concentrations of IgG in blood and colostrum in pregnant ewes was investigated.A total of 40 multiparous single-bearing ewes (body weight 68 ±8.4 kg) during last month of gestation were fed with one of the four experimental diets including; basal diet (CON), basal diet plus 1 g/d lycopen (LYC), 300 g/d corn (COR), 1 g/d lycopen plus 300 g/d corn (LYC + COR). Quantity of colostrum production was determined at 6 h post-partum using oxytocin injection method.The IgG concentration in colostrum at 6 and 12 h post-partum as well as at 14 and one day pre-partum was determined. Quantity of colostrum at 6 h post-partum in COR, and LYC + COR was higher (P<0.05) than that in CON and LYC. Blood IgG concentration in CON was significantly lower than COR, LYC, and LYC + CORN. Ewes in LYC+COR had higher (P<0.05) colostrum IgG concentration than ewes in CON. In conclusion, lycopene and corn supplementation during late gestation increased serum IgG concentrations and improved colostrum quantity and quality in pregnant ewes.