Dynamics of Selected Trace Minerals during Estrus Induction in Anestrus Sahiwal Cattle (original) (raw)
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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.
Indian Journal of Animal Research, Volume 57 Issue 12: 1606-1612 (December 2023), 2023
Background: For the successful reproduction in Kangayam cows, adequate nutrition containing sufficient quantum of minerals is necessary. Minerals are important cofactors in majority of the metabolic and immune reactions and hormone synthesis that could affect reproduction. Present study was planned to analyse whether mineral levels change in different treatment days following estrus induction and corresponding changes in stages of the estrous cycle. Methods: Non pregnant, pluriparous Kangayam cow (n= 70) were allotted to control and different treatment protocols (each consist of 10 cows) based on the transdermal (PNC based groups) and transvaginal application of progesterone (CIDR based group) with a shot of PGF 2 α one day preceding the day of progesterone removal. Ovulation was induced either using estradiol benzoate or buserelin acetate. Mineral profiles were analysed on the day of progesterone application (APP), removal (REM), AI and 10 days post insemination (10 DPAI). Result: It indicated that changes in the mineral levels between the treatment days especially on the day of AI and 10DAPAI could be correlated with the corresponding follicle and luteal phases and it could be concluded that there were significant changes especially in selenium, manganese, zinc and copper levels between the treatment days in each group which could be extrapolated to have specific roles in stages of estrous cycle. Among these minerals copper levels could be correlated to affect the steroid concentration by altering its metabolism thereby its clearance in Bos indicus breed ie Kangayam breed of Tamil Nadu.
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.
Copper and zinc concentrations in the uterine fluid and blood serum during the bovine estrous cycle
Veterinary research forum : an international quarterly journal, 2012
To investigate uterine and serum copper (Cu) and zinc (Zn) concentrations variation during the bovine estrus cycle , 232 blood and genital tract samples were collected from the abattoir in Urmia. The phase of the estrous cycle was determined by the examination of the ovaries and the uterine tonicity. Of the 46 samples selected for use in the study, 13 were pro-estrus, 10 estrus, 8 metestrus, and 15 diestrus. The uterus was incised and uterine fluid was collected by gentle scraping of the uterine mucosa with a curette. The total mean (± SEM) Cu concentrations in serum and uterine fluid samples, determined by spectrophotometry, were 66.1± 6.5 and 171.3 ± 33.2µg dL(-1) respectively, which were significantly different, while total mean serum and uterine fluid Zn concentrations were 91.9 ± 5.4 and 291.6 ± 23.4 µg dL(-1), which also showed a significant difference. The mean serum Cu values in different phases of the estrous cycle were not significantly different, while uterine fluid Cu co...
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.
2015
To investigate uterine fluid and serum copper (Cu) and zinc (Zn) variations during the estrous cycle in water buffaloes, 71 genital tracts and blood samples were collected from the abattoir in Urmia, Iran. The phase of the estrous cycle was determined by examining ovarian structures; 18, 15, 16 and 22 were pro-estrous, estrous, met-estrous and diestrous, respectively. The uterine fluid was collected by gentle scraping of the uterine mucosa with a curette. Blood serum and uterine fluid samples of 71 pre-pubertal buffalo calves were also collected and treated in similar manners. The mean (± SEM) total serum (77.10 ± 1.50 µg dL-1) and uterine fluid (296.40 ± 9.40 μg dL-1) Cu in cyclic cows was higher than the values of 54.00 ± 1.10 μg dL-1 and 133.40 ± 5.70 μg dL-1 in pre-pubertal calves, respectively. Blood serum (114.60 ± 3.20 μg dL-1) and the uterine fluid (349.90 ± 8.90 μg dL-1) Zn content in cyclic cows were also higher than those (98.80 ± 1.50 μg dL-1 and 246.6 ± 4.50 μg dL-1 res...
Role of macro minerals (Ca, p) in reproductive health of infertile crossbred cattle
International Journal of Chemical Studies, 2020
Reproduction is the important productive parameter which affects the profitability of dairy industry. Micro minerals play an important role in animal's reproductive physiology and its imbalance causes various problems leading to lowered reproductive efficiency. Therefore, adequate trace minerals supplementation and its absorption are required for various metabolic functions including reproduction and growth. Often correcting an imbalance in mineral levels may improve the reproductive performance, fertility and health of the animals. The present study shows total 24 infertile crossbred cows were selected to induce oestrus taken for correction of anoestrosity with incorporated mineral. Total 8 out of 24 animals exhibited oestrus symptom after the treatment. Among the animals received incorporated mineral (treatment group) 50% showed the oestrus symptoms. Among the animals under control 16.66% came into heat.
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.
Role of Trace Minerals in Bolstering Reproductive Health in Heifers
Trace minerals play a significant role in improving reproductive health. A study was carried out to evaluate the role of trace minerals in alleviating reproductive health in heifers. A total of 20 heifers were allotted into three groups T0, T1 and T2. T0 (n=4) was kept as control. T1 (n=10) was supplemented with Uniselit (M/S Ayurvet) along with standard basal diet. T2 (n=6) was supplemented with CofeCu along with standard basal diet. Results revealed that there was significant improvement in the physical and chemical parameters of estrus exhibition in the Uniselit supplemented group T1 as compared to control. The conception rate was also higher in group T1 in comparison to control. Thus, it can be inferred that trace minerals have significant influence in improving reproductive health in heifers.