Taxa de gestação em cabras Alpinas e Saanen tratadas com hCG no terceiro dia após o estro

Prosperi, C. P.; Torres, C. A. A.; Guimarães, José Domingos; Bruschi, J. H.; Leite, Pedro Alexandre Gomes; Maffili, Vitor Valério

doi:10.1590/s0102-09352006000200007

Cited by 2 publications

(3 citation statements)

References 9 publications

(3 reference statements)

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“…The values obtained by Léga et al (2005), who collected blood near the same time point used in our study (7 days after ovulation detection), are between 5.04 ± 4.35 ng.mL -1 on day 6, and 7.16 ± 7.14 ng.mL -1 on day 9, for animals later diagnosed as pregnant. Also, Prosperi et al (2006) reported an average of 5.99 ng.mL -1 of plasma progesterone at 8 days after ovulation in goats either untreated or treated with hCG. Our results demonstrate that reduced dosage eCG treatments were efficient in promoting formation of a functional corpus luteum, yielding adequate plasma concentrations of P 4 for maintenance of gestation in goats.…”

Section: Discussionmentioning

confidence: 99%

Use of hormonal subdoses applied in Bai Hui acupuncture in estrus synchronization protocols for goats

Souza

Araújo

Biscarde

et al. 2019

SCA

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The objective of this study was to evaluate the efficacy of delivering reduced doses of hormones via the Bai Hui acupoint in estrus synchronization in goats. A total of 40 goats received intravaginal sponges with medroxyprogesterone acetate for 7 days. The goats were then randomly distributed into 5 treatment: T1 - application of 132.5 ?g of cloprostenol and 300 IU of equine chorionic gonadotropin (eCG), both by intramuscular injection (IM); T2 - application of 39.75 ?g cloprostenol at the Bai Hui acupoint, and 300 IU of eCG by IM; T3 - application of 132.5 ?g of cloprostenol by IM, and 90 IU of eCG at the Bai Hui acupoint; T4 - application of 39.75?g of cloprostenol and 90 UI of eCG, both in Bai Hui and T5 acupuncture: application of 39.75?g of cloprostenol and 90 UI of eCG, both applied in false acupoint. The goats were subjected to an estrus synchronization protocol and monitored for estrus detection, coverage and evaluation of reproductive parameters to detect entry into estrus. The data were subjected to normality tests, followed by appropriate statistical analyses of each variable. There was no significant difference (P > 0.05) in the percentage of animals in estrus (95.00 ± 11.18%), interval between sponge removal and beginning of estrus (49.72 ± 8.93 h), interval between sponge removal and end of estrus (76.84 ± 11.98 h), duration of estrus (27.08 ± 8.68 h), size of the largest follicle (6.82 ± 0.44 mm), interval between sponge removal and ovulation (78.28 ± 10.82 h), time from ovarian onset to estrus (28.52 ± 5.44 h), follicular growth rate (0.86 ± 0.29 mm/day), number of ovulations (1.32 ± 0.23), plasma progesterone concentration at 7 days after ovulation (10.28 ± 1.65 ng.mL-1), and gestation rate at 30 days after the beginning of estrus (75 ± 12.5%). However, the cost of the synchronization protocol per animal was 43.42% lower in treatments 4 and 5 (30% of the doses) than in treatment 1 (100% of the dose). Ovulation and estrus were efficiently synchronized with the use of 39.75 ?g of sodium cloprostenol and 90 UI of eCG, applied at the Bai Hui acupoint or at a false acupoint.

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Section: Discussionmentioning

confidence: 99%

Use of hormonal subdoses applied in Bai Hui acupuncture in estrus synchronization protocols for goats

Souza

Araújo

Biscarde

et al. 2019

SCA

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“…Progesterone concentrations are used to monitor the luteal function, estrous cycle, and seasonality of reproduction, given that they reflect the development and regression of the corpus luteum. 4 Moreover, P 4 concentrations can be used to predict ovulation and detect estrus, 3,9,14 as well as to diagnose follicular cysts. 11 The parameter can also be helpful in a diagnosis of gestation status 9,14 and parturition date estimations.…”

Section: Introductionmentioning

confidence: 99%

“…4 Moreover, P 4 concentrations can be used to predict ovulation and detect estrus, 3,9,14 as well as to diagnose follicular cysts. 11 The parameter can also be helpful in a diagnosis of gestation status 9,14 and parturition date estimations. 15 Because the information on plasma P 4 concentration in goats is so valuable, a commercially available measuring kit and a simple procedure are highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Plasma Progesterone Analysis by a Time-Resolved Fluorescent Antibody Test to Monitor Estrous Cycles in Goats

Stankiewicz

Udała

et al. 2009

J VET Diagn Invest

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Abstract. The objective of the current study was to evaluate whether blood plasma progesterone (P 4 ) measurements with a time-resolved fluorescent antibody test (TR-FAT) kit designed for humans was applicable for goats. The first experiment was designed to verify whether the concentrations of P 4 measured by TR-FAT can be used to monitor the estrous and ovarian activity in goats (n 5 14). Blood samples (322) were collected, and the ovaries were scanned using ultrasonography. The second experiment was carried out on 4 goats (60 samples) and designed to compare the TR-FAT with radioimmunoassay (RIA). The time interval between the lowest concentrations of P 4 assayed by TR-FAT was 21 6 0.3 days and did not differ significantly from the length of the interestrous interval. The highest concentrations of P 4 were confirmed by detection of corpus luteum. During estrus, the mean concentration did not differ significantly between both methods. Significant differences were present during the luteal phases; however, the profiles of P 4 assayed by both methods followed a similar pattern. Regression analysis showed a correlation between the 2 methods (r 5 0.98; r 2 5 0.96; P , 0.0001). The Bland-Altman plot showed that all averages were within the 95% limits of agreement; however, the differences between both methods tend to be greater as the average increases. The results demonstrated that the TR-FAT method can be applied to monitor estrous cycles in goats through measurements of plasma P 4 concentrations. Moreover, not only does the TR-FAT meet the requirements for safety, but it is also a method of high throughput, rapidity, and simplicity.

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Taxa de gestação em cabras Alpinas e Saanen tratadas com hCG no terceiro dia após o estro

Cited by 2 publications

References 9 publications

Use of hormonal subdoses applied in Bai Hui acupuncture in estrus synchronization protocols for goats

Use of hormonal subdoses applied in Bai Hui acupuncture in estrus synchronization protocols for goats

Plasma Progesterone Analysis by a Time-Resolved Fluorescent Antibody Test to Monitor Estrous Cycles in Goats

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