scholarly journals Effect of eCG applied to dairy cows in the postpartum period on ovarian activity and reproductive performance

2020 ◽  
Vol 76 (03) ◽  
pp. 6364-2020
Author(s):  
KUDRET YENİLMEZ ◽  
NURULLAH ÖZDEMİR
Keyword(s):  
Dairy Cows ◽  
Postpartum Period ◽  
Ovarian Follicle ◽  
Control Group ◽  
Ovarian Activity ◽  
Serum Estradiol ◽  
Serum Progesterone ◽  
Ovarian Follicle Development ◽  
Follicle Diameter ◽  
Equine Chorionic Gonadotropin

The aim of this study was to determine the effect of equine chorionic gonadotropin (eCG) applied in postpartum (pp) period on ovarian follicle development, serum estradiol concentration, serum progesterone concentration, the calving-to-first oestrus (calving-to-first insemination) interval, and conception at first insemination. The material of this study consisted of 20 cows on day 14 pp. Cows included in this study were randomly divided into two groups. Cows in the first group, were treated with eCG (500 IU Folligon; Intervet, Holland) for 14 days. No treatment was applied to the second group, and it was left as a control group, Ovarian follicle diameters were measured by ultrasonographic examination on days 14, 16, 18, 20 and 22 pp in all animals included in the study. Serum estradiol and progesterone were from blood samples taken on the same days. All animals included in the study were followed up until the first observable oestrus was detected, and they were inseminated 12 hours after the appearance of oestrus symptoms. A pregnancy examination was performed on the 45th day after insemination. In cows administered with eCG during postpartum period, an increase in ovarian follicle diameters compared to untreated cows and a decrease in the calving-to-first oestrus interval were determined. In contrast, serum estradiol and progesterone hormone levels did not differ between the two groups. Pregnancy rate in the experimental group was higher than that in the control group, but there was no statistical difference between them. As a result, it was concluded that eCG applied to dairy cows on day 14 pp did not affect serum estradiol and progesterone levels, but it affected the ovarian follicle diameter and the calving-to-first oestrus interval positively.

scholarly journals Investigating Post-partum Ovarian Cyclicity Following Various Treatments in Dairy Cows

2019 ◽  
Vol 41 (336) ◽  
pp. 22-25
Author(s):  
Akshay Sharma ◽  
Madhumeet Singh ◽  
Pravesh Kumar ◽  
Pradeep Kumar Dogra
Keyword(s):  
Dairy Cows ◽  
Corpus Luteum ◽  
Body Condition Score ◽  
Post Partum ◽  
Control Group ◽  
Ovarian Activity ◽  
Complete Regression ◽  
Dominant Follicle ◽  
Cyclic Activity ◽  
Follicle Diameter

Abstract The present study envisages the effect of PGF2α and antibiotic treatment on ovarian cyclic activity and regression of corpus luteum verum in post-partum dairy cows. Cows were divided into three treatment (PG8, PG25, antibiotic) and a control group. Ovarian activity was studied by examining follicular dynamics upto 42 days post-partum in which diameter of dominant follicle before first ovulation, the number of days to first ovulation and complete regression of corpus luteum verum were evaluated. Body condition score was recorded for all the cows in different groups. Also, ovulation on ovary ipsilateral or contralateral to previous gravid uterine horn was noted. On transrectal ultrasonography at a 3-day interval, dominant follicle diameter prior to ovulation was significantly higher (p<0.01) in PG8 group. The mean time required for complete regression of CL verum was not significantly (p>0.05) lower in PG8 group i.e. 24.33±1.48 days in comparison to PG25, antibiotic and control group (26.67±1.48, 29.00±1.81and 27.60±1.40 days post-partum, respectively). A subsequent ovarian activity was affected as 70.83 and 66.33% Ist and IInd ovulations occurred on the ovary contralateral to corpus luteum verum. In conclusion, contralateral ovary was more active in terms of ovulation whereas presence of corpus luteum verum had no effect on post-partum ovarian cyclic activity.

scholarly journals The New Detection Method of Ovarian Follicle Development Using Digitized Wide Area Measurement

2021 ◽  
Vol 9 (B) ◽  
pp. 475-479
Author(s):  
Noviyanti Noviyanti ◽  
Yuyun Yueniwati ◽  
Bambang Rahardjo ◽  
Karyono Mintaroem ◽  
Erick Khristian
Keyword(s):  
Strong Correlation ◽  
Ovarian Follicle ◽  
Estradiol Level ◽  
Area Measurement ◽  
Wide Area ◽  
Control Group ◽  
Control Group Design ◽  
Ovarian Follicle Development ◽  
Follicle Diameter ◽  
Experimental Laboratory

METHODS: The research method used in this research was experimental laboratory with pre-and posttest only control group design. RESULTS: The result shows that the extradiol level which has range of 26.30–31.03 from 28 experimental animals measured, this showed more measurement diameter which has not had measurement addition compare with the wide percentage of measurement. The result shows strong correlation between digitalized measured wide follicles to the changing of estradiol level with value of 0.453. The result of comparation between estradiol level and measured diameter shows weak correlation. This shows that manual measurement of follicle diameter still weak to the changing of estradiol level. CONCLUSION: There is strong correlation between measured wide area follicle used ImageJ applications to the changing of estradiol level compare to the measurement of follicle diameter.

scholarly journals The Effect of A PRID®Delta-Based Estrus Synchronization Protocol On Pregnancy Rates In Cows With No Estrus Symptoms

2022 ◽  
Author(s):  
Murat Can Demir ◽  
Cihan Kaçar ◽  
Umut Çağın Arı ◽  
Semra Kaya ◽  
Oğuz Merhan ◽  
...  
Keyword(s):  
Pregnancy Rate ◽  
Artificial Insemination ◽  
Prostaglandin F2α ◽  
Pregnancy Rates ◽  
Dominant Follicle ◽  
Serum Progesterone ◽  
Blood Samples ◽  
Follicle Diameter ◽  
Follicle Size ◽  
Equine Chorionic Gonadotropin

Abstract The present study aimed to determine the effects of progesterone-based gonadotropin-releasing hormone (GnRH), prostaglandin F2α (PGF2α), and equine chorionic gonadotropin (eCG) injections on progesterone profiles and pregnancy rates in cows with no estrus symptoms within 60 days after parturition. A total of 80 cows were included in the study. All animals had the progesterone-releasing device PRID®Delta placed intravaginally for nine days with an injection of GnRH. On the eighth day, PGF2α was injected, and PRID®Delta was removed from the vagina on day nine. Artificial insemination was carried out 60 hours after PRID®Delta removal. In half of the animals (n = 40), 600 IU of eCG was injected when PRID®Delta was removed on the ninth day before artificial insemination 60 hours later. Blood samples were taken from the tail vein on days 0 and 8 to determine progesterone levels. The pregnancy rate in the group that received eCG was 37.5%, while it was 27.5% in those that did not (P = 0.4). While the dominant follicle diameter was 15.5 mm in cows injected with eCG during timed artificial insemination, the follicle diameter was 12.4 mm in cows with no eCG injection (P <0.001). There were no differences in serum progesterone values in blood samples taken until the time of artificial insemination. However, progesterone values in the blood taken during artificial insemination were 0.94 ng/ml in the eCG- group and 0.72 ng/ml in the eCG+ group (P <0.05). As a result, it was determined that eCG injections, in addition to progesterone-based GnRH and PGF2α applications, increased the pregnancy rates in cows without symptoms of estrus. The dominant follicle diameter was larger in cows treated with eCG during artificial insemination; however, follicle size did not increase the pregnancy rate.

Changes in plasma oxidative stress biomarkers in dairy cows after oestrus synchronisation with controlled internal drug release (CIDR) and prostaglandinF2α (PGF2α)

2014 ◽  
Vol 54 (9) ◽  
pp. 1490 ◽  
Author(s):  
Saranika Talukder ◽  
Kendra L. Kerrisk ◽  
Luke Ingenhoff ◽  
Gianfranco Gabai ◽  
Sergio C. Garcia ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Drug Release ◽  
Dairy Cows ◽  
Ovarian Follicle ◽  
Plasma Concentrations ◽  
Physiological Role ◽  
Reactive Oxygen Metabolites ◽  
Oxidative Stress Biomarkers ◽  
Stress Biomarkers ◽  
Follicle Diameter

This study was designed to evaluate the plasma profiles of oxidative stress biomarkers, progesterone and ovarian follicle diameter in ovulatory versus an-ovulatory cows. Twenty cows were synchronised using controlled internal drug release (CIDR) and prostaglandinF2α (PGF2α) protocol. Plasma samples were analysed for progesterone (P4), oxidative stress (OS) biomarkers; reactive oxygen metabolites (ROMs), biological antioxidant potential (BAP), oxidative stress index (OSI = ROMs/BAP × 100), advanced oxidation protein products, ceruloplasmin and glutathione (GSH). Plasma P4 concentration was greater in ovulated cows 24 hours (h) after PGF2α treatment but lower 48 h after PGF2α treatment compared with that of an-ovulated cows at those sampling sessions (P < 0.05). Ovulated cows were diagnosed with greater ovarian follicle diameter compared with that of their herd mates not diagnosed for ovulation. Significant interaction of time of PGF2α treatment and ovulation status (ovulatory versus an-ovulatory) with the plasma concentrations of OSI, BAP and GSH were observed. Ovulated cows had significantly lower BAP compared with that of an-ovulated cows (P < 0.05) 9 h, 48 h, 60 h and 128 h after PGF2α treatment. Plasma concentrations of GSH were lower (P < 0.05) in ovulated cows than that of an-ovulated cows 60 h and 96 h after PGF2α treatment. However, OSI was greater (P < 0.05) in ovulated cows than that of an-ovulated cows 9 h, 48 h, 60 h and 128 h after PGF2α treatment. Significant associations were observed between OS status and sampling time. Oxidative stress status may have important physiological role in facilitating the ovulation process in oestrus synchronised dairy cows.

Influence of PMSG antiserum on serum progesterone and estrous cycles of PMSG-treated gilts

1992 ◽  
Vol 72 (1) ◽  
pp. 173-176 ◽  
Author(s):  
R. N. Kirkwood ◽  
P. A. Thacker
Keyword(s):  
Key Words ◽  
Luteal Phase ◽  
Ovarian Activity ◽  
Serum Estradiol ◽  
Serum Progesterone ◽  
Estrous Cycles ◽  
Blood Samples ◽  
Effect Of Treatment

Forty-seven prepubertal gilts (88.4 ± 0.9 kg) received an injection of 750 IU PMSG to stimulate ovarian activity. After 96 h, 23 gilts received an injection of an anti-PMSG serum. Blood samples were obtained at the time of PMSG injection (day 0) and at 2, 4, 6, 11, 18, 25 and 32 d. There was no effect of treatment on serum estradiol concentrations or on the occurrence of normal estrous cycles. However, luteal phase serum progesterone concentrations were higher (P < 0.01) in gilts receiving the anti-PMSG. Key words: PMSG, antiserum, gilts, ovulation

Influence of a short-term prepartum supplementation on beef cows and calves’ performance in pastoral conditions

2016 ◽  
Vol 56 (11) ◽  
pp. 1913 ◽  
Author(s):  
G. Quintans ◽  
A. Scarsi ◽  
G. Roig ◽  
M. Carriquiry ◽  
G. Banchero
Keyword(s):  
Milk Production ◽  
Postpartum Period ◽  
Crude Protein ◽  
Beef Cows ◽  
Breeding Period ◽  
Serum Progesterone ◽  
Follicle Diameter ◽  
Acid Detergent Fibre ◽  
Calf Performance ◽  
Sorghum Grain

Multiparous Aberdeen Angus × Hereford crossbred cows were used to evaluate the effect of supplementation during the last month of gestation on milk production and composition and cow and calf performance. Cows were assigned randomly to supplement (SUP; n = 18) or Control (CON; n = 17) treatments. Supplemented cows were offered (1 kg/100 kg bodyweight) a mix of sorghum grain and protein concentrated (67 : 33 as-fed basis; 16% crude protein, 11% acid detergent fibre) from (mean ± s.e.m.) 33 ± 1.4 days prepartum until calving. Before, during, and after the supplementation period, cows grazed together a native pasture paddock with average forage mass available of 1345 kg/ha of dry matter (10.4% crude protein, 45.2% acid detergent fibre). Cows were blood sampled weekly from –42 to 112 days postpartum (DPP) for serum progesterone and non-esterified fatty acids (NEFA) concentrations. Maximum follicle diameter was measured by ovarian ultrasound examination at 60 DPP. The breeding period lasted 60 days and started at 60 ± 1.4 DPP. There was an interaction between treatment and time on BCS (P < 0.0005). Before calving there were no differences in BCS between cows in SUP and in CON, but at calving SUP cows tended (P = 0.10) to present greater BCS and from calving to 84 DPP BCS was greater (P < 0.05) in SUP with respect to CON cows. There was an interaction between treatment and time on plasma NEFA concentrations (P < 0.0005). During the last month of gestation NEFA concentrations were reduced in SUP cows but there were no differences between treatments during the postpartum period. Milk production decreased linearly from 30 to 150 DPP but there was no effect of treatment on it. Calf bodyweight at birth and at weaning did not differ between treatments (37.5 ± 2.4 and 175.6 ± 2.4 kg, respectively). The probability of cows presenting follicles with diameter ≥10 mm was greater (P < 0.05) in SUP than CON cows. The length of the postpartum period did not differ between treatments. The probability of cows cycling during the first 90 DPP and pregnancy rate tended (P = 0.08) to be greater in SUP than in CON cows. Supplementation in winter and for only 30 days in the last month of gestation of beef cows under grazing conditions, increased cows’ BCS without increasing BW of calves, and tended to improve reproductive performance.

scholarly journals Ovarian activity in beef and dairy cows with prolonged postpartum period and heifers that fail to conceive

2009 ◽  
Vol 42 (4) ◽  
pp. 607-615 ◽  
Author(s):  
N. Yimer ◽  
Y. Rosnina ◽  
H. Wahid ◽  
A. A. Saharee ◽  
K. C. Yap ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Postpartum Period ◽  
Ovarian Activity

scholarly journals The effect of Glycoline® on reproductive efficiency in high-producing dairy cows

2016 ◽  
pp. 5163-5176
Author(s):  
Marcelo R. Del Campo ◽  
Marco Gonzalez T ◽  
Hans Andresen ◽  
Freddy A. Cea
Keyword(s):  
Dairy Cows ◽  
Pregnancy Rate ◽  
Transition Period ◽  
Holstein Cows ◽  
Reproductive Efficiency ◽  
Control Group ◽  
Ovarian Activity ◽  
Uterine Infection ◽  
Uterine Involution ◽  
Downer Cow Syndrome

ABSTRACT Objective. Determine the effect of Glycoline® on reproductive efficiency in high producing dairy cows. Materials and methods. 100 Holstein cows one month before delivery were selected. About 21 days before parturition they were put in a barn and were randomized in two groups: Glycoline® Group (GG, n=50), 300 g/day of Glycoline® for 21 days antepartum and 250 g/day of GlycoLine® over the following 21 days postpartum, and the Control Group (CG, n=50) with the same feed and silage ration as GG during the same period, but without the addition of Glycoline®. Events and reproductive variables of the cows were recorded for 202 days. The data were systematized, analyzed and statistically compared. Results. Comparisons were made between GG and CG respectively: Retained placenta (0.0 vs. 12.0%; p=0.027), downer cow syndrome (14.3 vs. 44.0%; p=0.002), uterine involution (64.6 vs. 36.4%; p=0.019 ), uterine infection (10.4% vs. 35.5%; p=0.006), no ovarian activity (6.3 vs. 25.6%; p=0.018), follicular cysts (0.0 vs. 18.2%, p = 0.002), luteal structures (25.0 vs. 9.3% ; p=0.058), mean estrus presentation (40.1% vs. 63.5%; p=0.033) inseminated females (79.6 vs. 68.0%; p=0.017), pregnancy rate at day 150 (57.1 vs. 46.0%; p≥0.317 ) and intervals (days): calving to 1st estrus (39.8 vs. 63.2; p≤0.006), calving to IA (62.4 vs. 87.5; p≤0.006) calving to conception (81.7 vs. 93.6; p≤0.006; p=0.103). Conclusions. Results suggest that dietary Glycoline® added in the transition period improves reproductive efficiency of high-producing dairy cows. RESUMEN Objetivos. Determinar el efecto del Glycoline® sobre la eficiencia reproductiva en vacas lecheras de alta producción. Materiales y Métodos. Se seleccionaron 100 vacas Holstein un mes antes del parto. Alrededor de 21 días antes del parto se ubicaron en un establo y se asignaron al azar a dos Grupos: Grupo Glycoline® (GG; n=50), 300 g/día de Glycoline® durante 21 días preparto y 250 g/día de Glycoline® durante los siguientes 21 días posparto y Grupo Control (GC, n=50) la misma ración de concentrado y ensilaje que el GG durante el mismo período de tiempo, pero sin la adición de Glycoline®. Se registraron los eventos y las variables reproductivas de las vacas durante 202 días. Los datos fueron sistematizados, analizados y comparados estadísticamente. Resultados. Comparaciones entre el GG y GC respectivamente: Retención de placenta (0,0 vs 12.0%; p=0.027), síndrome de vaca caída (14.3 vs 44.0%; p=0.002), involución uterina (64.6 vs 36.4%; p=0.019), infección uterina (10.4% vs 35.5%; p=0.006), sin actividad ovárica (6.3 vs 25.6%; p=0.018), quistes foliculares (0.0 vs 18.2%, p=0.002), estructuras luteales (25.0 vs 9.3%; p=0.058), promedio presentación de celo (40.1% vs 63.5%; p=0.033), hembras inseminadas (79.6 vs 68.0%; p=0.017), tasa de preñez al día 150 (57.1 vs 46.0%; p≥0.317) y intervalos de tiempo (días): parto 1er -celo (39.8 vs 63.2; p≤0.006), parto-IA (62.4 vs 87.5; p≤0.006) y parto-preñez (81.7 vs 93.6; p≤0.006; p=0.103). Conclusiones. Los resultados sugieren que el Glycoline® adicionado en la dieta en el período de transición, mejora la eficiencia reproductiva de vacas de alta producción.

scholarly journals The puerperium in dairy cows: ovarian activity, uterine involution and follicular dynamics

2015 ◽  
Vol 13 ◽  
Author(s):  
José Carlos Dos Santos Breda ◽  
Luiz Ernandes Kozicki
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Postpartum Period ◽  
Reproductive Tract ◽  
Ovarian Activity ◽  
Non Invasive ◽  
The Past ◽  
Uterine Involution ◽  
Follicular Dynamics

The study of ovarian follicular dynamics (OFD) and other changes in the bovine reproductive tract has developedsignificantly over the past two decades, primarily due to the use of non-invasive investigative approaches suchas ultrasound. Advances in ultrasound examinations have provided a better understanding of ovarian activity,uterine involution, oviducts status, and other segments of the reproductive tract in the bovine postpartumperiod. Procedures including tracking of the reproductive tract have likewise aided in the development of newmethodologies and techniques to improve reproductive performance in cattle. The aim of this review was tosummarize knowledge regarding the reproductive tract in dairy cows during the postpartum period.

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