Changes in Mineral Profiles in Progesterone-based Estrus Induction Protocols and their Relationship with the Phases of Estrous Cycle in Kangayam Cows (original) (raw)
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Dynamics of Selected Trace Minerals during Estrus Induction in Anestrus Sahiwal Cattle
Journal of Animal Research, 2019
The present study evaluated the effect of circulatory trace mineral profiles on fertility response during estrus induction by progesterone based therapy in acyclic Sahiwal cattle. Sahiwal cows and post-pubertal heifers (n=25 each) with true anestrus condition (acyclicity confirmed ultrasonographically) were subjected to CIDR-based protocol (intravaginal CIDR application for 7 days, 500 IU eCG at CIDR removal, followed by estrus observation and AI). In heifers, additionally an injection of 5.0 mg estradiol valerate at CIDR insertion was given. Blood samples on days 0 (before CIDR application), 3, 5, 7 and 9 were collected. Almost similar estrus induction (68% vs. 64%) and subsequent conception rates (41.2% vs. 50%) during the first induced estrus were recorded in cows and heifers, respectively. During the course of treatment, significant (P<0.05) variation in plasma copper and zinc concentrations was recorded both in cows and heifers. Contrarily, manganese concentrations varied significantly (P<0.05) in cows only. However, iron profiles remained uniform during the course of treatment. Significantly (P<0.05) higher pre-treatment plasma concentrations of copper, zinc and manganese was recorded in those cows and heifers in which estrus was induced, compared to those in which estrus induction failed to occur. No significant difference (P>0.05) was recorded for iron concentration vis-à-vis estrus induction response. Hence, it is indicated that circulatory copper, zinc and manganese profiles influence the reproductives energy in acyclic animals and their suboptimal profiles may reduce the efficacy of estrus induction protocols in Sahiwal cattle.
Animal Reproduction Science, 2017
This study evaluated the effect of injecting trace minerals on reproductive performance in overconditioned Holstein cows before synchronized estrus. Multiparous non-lactating, over-conditioned repeat breeder cows (n = 20) were assigned randomly to one of two treatments: 1) control (n = 10), and 2) supplementation with an injectable trace mineral complex 25 days before expected synchronized estrus (n = 10). Follicular waves were synchronized by intravaginal insertion of a CIDR for eight days and an intramuscular (i.m.) injection of a GnRH analogue. Estrus was induced at CIDR removal by an i.m. injection of PGF 2α. Blood samples were collected before and after synchronized estrus. The response variables were follicle population (FP), diameter of the preovulatory follicle at CIDR removal (DFP0) and at estrus detection (DFP1), time of estrus after CIDR removal (TE), area of corpus luteum (ACL), pregnancy rate and copper and zinc serum concentrations. The statistical analysis of the variables was carried out with SAS. The FP, DFP0, DFP1, TE, ACL and serum concentrations of copper and zinc were not affected by the trace mineral injection (P > 0.05). Even though pregnancy rate at 40 (77.78 ± 13.46 vs 44.44 ± 16.56%) and 60 days after AI (66.67 ± 15.71 vs 33.33 ± 15.71%) was numerically higher for cows injected with trace minerals than for the control group, the differences were not significant (P > 0.05). In conclusion, while follicular and corpus luteum development were not affected by trace mineral injection, it may be a feasible way to increase the pregnancy rate in over-conditioned cows.
Mineral an Important Nutrient for Efficient Reproductive Health in Dairy Cattle
2017
Apart from energy and protein, mineral constitutes a major role in production and reproduction of animals. Deficiencies of certain mineral elements may cause reproductive disorders as minerals play an important role in health and reproduction of the livestock. Infertility and reproductive disorders has emerged as an important problem in our livestock population. Adequate supplementation of minerals depends on age, stage of pregnancy and lactation. Macro minerals and trace minerals are equally important as they take part in formation of structural component of body and proper functioning of enzymes, hormones, vitamins and cells. Mineral deficiency and toxicity is area specific. Minerals have beneficial or detrimental effects on animal physiological wellbeing, depending on its balance.
Indian Journal of Animal Research, 2022
Background: Copper and selenium were proven modulaters of reproductive function in ruminants under dietary supplementation. Their effects under pareneral administraton during estrus synchronization are not clearly defined. On this background the present was aimed to evaluate the effect of copper and selenium on estrus associated responses in goats. Methods: Thirty adult female Salem black goats were selected. On day ten of the estrus cycle, 250 µg of cloprostenol injection was given intramuscularly to all the animals and assigned to five groups. GI: control, GII: 4 µg of Buserelin, GIII: 20 mg cupric chloride, GIV: 10 mg sodium selenite and GV: copper plus selenium injections were administrated. Whole blood was collected for seven days for hormone assay. Estrus was detected using aproned bucks. Result: There was no significant (p greater than 0.05) difference in estrus response, onset and duration of estrus between groups. The progesterone concentration decreased significantly (p le...
Ciencia Veterinaria, 2021
The objective of this investigationwas to study the supplementa-tion of injectable trace minerals (ITM), based on Cu, Zn, Mn, and Se on reproductive performance of dairy cows from Torreon, Mexico, a geographical region characterized by a semi-desertic climate. The study consisted of 2 field trials. Trial 1 compared the application of 2 doses of ITM during the dry period (at dry-off and at prepartum) (n= 75) with a control group (n=79). Trial 2 compared the application of 1 dose of ITM at 35 d postpartum (n=258) with a control group (n=258). In both trials, conception rate at first service (CRFS) and days to conception were evaluated. In Trial 1, CRFS was not different be-tween groups, but calving to conception interval tended to be shorter in 10 days in the treated than the control group (P=0.14). In trial 2, CRFS was not different between groups either, but time to pregnancy was significantly 14 days earlier than the control group (P ≤ 0.05). It is concluded that although CRFS was similar between groups, the appli-cation of an ITM reduced the time to pregnancy in treated than the control groups, which have a great impact on herd’s fertility and profit.
Animal Husbandry and Fodder Production, 2021
The paper presents data regarding the status of some important bioelements for the bovine fertility when a mineral supplement was added to a normal fertility protocol in cattle and the influence of this upon the fertility percentage. The study was made on sixty Romanian Spotted cattle 18-19 months old divided randomly in four groups as follows: C-Control, and three experimental groups E1-E3, that received a normal fertility protocul with Ovarelin (GnRh) in day 1 and day 10, Enzaprost (PGF2α) in day 7. E1 received in plus Sel-E-Vit (Selenium+Vit.E), E2 received Mineral TS and E3 Sel-E-Vit + Mineral TS. The cattles were blind artificial inseminated in day 11 and gestation diagnosis was performen by ultrasound method in day 55 and the percentage of fertility was analyzed. Blood samples were collected in day 0 and day 12 for trace elements analisys by AAS flame and furnace method. Were measured the serum levels of iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and selenium (Se). In all experimental groups in day 0 were not significant (P≥0.05) differences regarding the studied trace elements. In day 12 we observed a significant increase of Se and Fe in E2 and E3 groups and of Cu in E2 group comparative to controol. On the other hand was recorded a significant decrease of Zn and not significant decrease of Mn in all experimental groups comparative to control. The conception rate and percentage of fertility was higher in E1 followed by E2 and E3 groups comparative to control. We can conclude that the introduction of a mineral supplement, in our case Mineral TS, could increase the the conception rate and fertility percentage in cattle.
Sel'skokhozyaistvennaya Biologiya
A b s t r a c t Progesterone in combination with pregnant mare serum gonadotropin (PMSG) is widely used to synchronize estrus in ewes. It is also known that various minerals and vitamins are necessary to provide animal reproductive health, and their blood level is reliably associated with reproductive performance. The objective of our research was to determine the effects of supplementation of vitamin E and mineral mixtures during progesterone treatment on reproductive performance of estrus-induced ewes during the non-breeding season. The present study was carried out between May and June, which is the period accepted as non-breeding season for ewes in Sanliurfa province of Southeast Turkey. A total of 148 non-lactating adult ewes of Awassi breeds in good body score condition, ranging in age from 2 to 4 years and weighting between 45 and 60 kg were used in this study. Estrus was synchronized in all ewes using the intravaginal sponges containing 20 mg fluorogestone acetate. The intravaginal sponges were inserted into vagina of each ewe for 14 days. At the time of sponge withdrawal (day 0), all ewes were injected intramuscularly with 10 IU/kg of PMSG for stimulation of estrus and ovulation. Treatment group (n = 74) received orally supplementation of vitamin E and mineral mixtures (Bakosel ® capsule; Ceva Dif, Istanbul, Turkey; a capsule contains 500 IU vitamin E acetate, 2.5 mg sodium selenite, 150 mg dicalcium phosphate, 10 mg copper sulphate, 12.5 mg cobalt sulphate) at the four times a week apart during progestagen treatment and at the time mated. The remaining ewes (n = 74) served as control group, and the each female in this group also received only placebo instead of vitamin and mineral supplementation. They were tested for pregnancy detection on day 40 after mating using real time ultrasonography with 5-7.5 MHz linear array rectal transducer. The estrus response was 87.8 % and 82.4 % for the treatment and control groups, respectively. The overall pregnancy rate was 71.4 % (90/126). The gestation length was similar between groups and it averaged 149.4±0.3 days. The lambing rate was 75.4 % (49/65) and 65.6 % (40/61) for the treatment and control groups, respectively. The number of multiple births (42.9 % versus 20.0 %) and prolificacy rate were higher (P < 0.05) for the treatment group than those of control group. It is concluded that vitamin E and the multi-trace minerals/bolus given to Awassi ewes 14 days before mating significantly increased the proficiency rate, the multiple births rates and led to stronger manifested estrus behaviors.
Interactions between Dietary Minerals and Reproduction in farm Animal
Global Journal of Animal Scientific Research, 2015
The production efficiency of farm animals is largely dependent on their reproductive performance, and there are interactions between reproductive performance and mineral status. Minerals are inorganic nutrients, usually required in small amounts and they play an important role in metabolic processes. For optimal productivity, twenty two (22) beneficial mineral elements have been identified and classified. These include copper, cobalt, potassium, phosphorus, magnesium, manganese, selenium, calcium, iodine, zinc, iron, chlorine, sodium, chromium, molybdenum and among others. Studies have shown that minerals are involved in intracellular detoxification of free radicals, biosynthesis of steroids and cellular metabolism of carbohydrate, protein and nucleic acid. Minerals have beneficial or detrimental effects on animal physiological wellbeing, depending on its balance. Some of the consequences of inadequate (deficiencies) or excesses dietary mineral intake include delayed puberty, impaired spermatogenesis and prolonged postpartum anestrus. The mechanisms by which minerals impinge on reproduction are not completely clear, but evidence exists, that their effects are mainly exerted at the higher neural centres or hypothalamus. Therefore this paper was an attempt to review the interaction between minerals and animal reproduction. It will also review the negative effect of mineral when they are over fed. Furthermore, this review could also serve as a ready source of literature for researchers in animal nutrition and nutritional reproductive physiology
Veterinary World, 2015
The present study was carried out to compare the associated role of micro minerals and hormones in repeat breeding animals with the normal crossbred cows. Materials and Methods: Blood samples were collected from 10 normal cycling and 10 repeat breeding crossbred cows of Ramakrishna Mission Ashram, Narendrapur to study the plasma mineral profile and hormonal activities. Results: Zn was found to be highly significant (p<0.01) between the two groups. Follicle stimulating hormone (FSH) and progesterone showed significant (p<0.05) difference in repeat breeding animal from the normal cyclic animal, whereas no significant differences were observed in Ca, P, Cu, Se, Co, luteinizing hormone and estradiol level. Conclusion: It may conclude that repeat breeding condition of crossbred cows in farm condition is mainly due to the low level of progesterone, FSH and zinc.
2017
To assess the effect of area specific mineral mixture and hormonal therapy on growth, blood chemistry and mineral status of the reproductive disorder cross-bred cattle of Kalahandi district of Odisha, 80 animals (52 cows, 28 heifers) were selected and divided into four groups of 20 animals each (containing both anoestrus and repeat breeder) in which treatment was performed for 60 days. Group I: control (farmer practice), group II: group I + area specific mineral mixture @ 50 g/animal/day, group III: group II + hormone (double synch), and group IV: group II + hormone (Estra double synch). The growth performances were measured in terms of body weight and average daily gain (ADG). Blood collection was done at the start and end of the experiment for assessment of blood biochemical and mineral status of the animals. Results revealed significant (p< 0.05) improvement in growth, serum glucose and mineral status of treated animals as compared to control animal.