Effects of repeated exposure to an estrus synchronization protocol on reproductive parameters in dairy goats

2019 ◽  
Vol 99 (3) ◽  
pp. 489-496 ◽  
Author(s):  
Shuang Sun ◽  
Shimin Liu ◽  
Jun Luo ◽  
Zhi Chen ◽  
Yang Yang ◽  
...  
Keyword(s):  
Repeated Exposure ◽  
Estrus Synchronization ◽  
Reproductive Parameters ◽  
Dairy Goats ◽  
Synchronization Protocol

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

2019 ◽  
Vol 40 (4) ◽  
pp. 1501 ◽  
Author(s):  
Diego Oliveira de Souza ◽  
Monna Lopes de Araújo ◽  
Carmo Emanuel Almeida Biscarde ◽  
Claudinéia da Silva Mendes ◽  
Mariana Alves de Andrade Silva ◽  
...  
Keyword(s):  
Estrus Synchronization ◽  
Reproductive Parameters ◽  
Follicular Growth ◽  
Plasma Progesterone ◽  
Significant Difference ◽  
Estrus Detection ◽  
Detection Coverage ◽  
Equine Chorionic Gonadotropin ◽  
The Cost ◽  
Synchronization Protocol

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.

Protected fatty acid supplementation during estrus synchronization treatment on reproductive parameters of dairy goats

2016 ◽  
Vol 88 (2) ◽  
pp. 254-258 ◽  
Author(s):  
Juliana dos Santos Kuhner Oliveira ◽  
Jeferson Ferreira da Fonseca ◽  
Joanna Maria Gonçalves Souza-Fabjan ◽  
Luciana Vieira Esteves ◽  
Luiz Fernando Rodrigues Feres ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Estrus Synchronization ◽  
Reproductive Parameters ◽  
Dairy Goats ◽  
Fatty Acid Supplementation ◽  
Acid Supplementation

scholarly journals Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

2013 ◽  
Vol 65 (6) ◽  
pp. 1585-1592 ◽  
Author(s):  
L.V. Esteves ◽  
F.Z. Brandão ◽  
R.C. Cruz ◽  
J.M.G. Souza ◽  
E. Oba ◽  
...  
Keyword(s):  
Body Condition Score ◽  
Prostaglandin F2α ◽  
Blood Collection ◽  
Estrus Synchronization ◽  
Reproductive Parameters ◽  
Dairy Goats ◽  
Dose Administration ◽  
Condition Score ◽  
To Receive ◽  
Different Doses

The objective of this study was to evaluate the efficiency of two doses of PGF associated or not to hCG on the associated reproductive parameters in dairy goats. A total of 29 goats received two doses of 30µg d-cloprostenol latero-vulvar at a 10 day intervals (Day 1 and Day 10). The does were allocated according to body weight and body condition score into two treatments, to receive hCG (250IU) or saline at estrus onset. After the second dose of PGF, estrus was monitored and ultrasound exams were performed twice daily. All does were inseminated 16h after estrus onset. Blood collection was performed every day for progesterone assay. The use of hCG at estrus onset did not affect any studied parameter and therefore the data were pooled. Estrous response rate was similar (P>0.05) after the first (75.9%, 22/29) and the second dose of PGF (79.3%, 23/29). The interval between the administration of PGF and estrus onset was greater (P<0.05) after Day 1 (75.8±53.9h) than Day 10 (47.7±10.1 h). Estrus duration was superior (P < 0.05) after Day 1 (35.4±15.9h) to Day 10 (26.8±15.0h). Ovulation rate was 79.3% (23/29) after the second dose of PGF. No differences (P>0.05) between both experimental groups were detected in the following parameters, averaging: the interval from the second dose administration to the ovulation (86.6±11.4h), interval from estrus to ovulation (39.9±12.3 h), diameter of largest follicle (7.2±1.4) and number of ovulations (1.8±0.6). At Day 1, 52.4% (11/21) of does presented progesterone concentrations <1ng/mL. At Day 10, 100% of the animals presented concentrations >1ng/mL. The results of the present study indicate that estrus can be efficiently synchronized in dairy goats with the use of two doses of PGF at a 10 day interval. Further research should be done evaluating hCG use in different doses or moments of administration.

scholarly journals 215SUCCESSFUL OUT-OF-BREEDING SEASON ESTRUS SYNCHRONIZATION FOLLOWED BY FIXED TIME INSEMINATION IN WATERBUFFALO (BUBALUS BUBALIS)

2004 ◽  
Vol 16 (2) ◽  
pp. 229 ◽  
Author(s):  
R.M. Züge ◽  
U. Rodacki ◽  
A.T. Grandi ◽  
J.M.J. Aerts ◽  
P.E.J. Bols
Keyword(s):  
Breeding Season ◽  
Buenos Aires ◽  
Fixed Time ◽  
Estradiol Benzoate ◽  
Sao Paulo ◽  
Reproductive Efficiency ◽  
São Paulo ◽  
Estrus Synchronization ◽  
The Impact ◽  
Synchronization Protocol

The most important barrier to the increase of buffalo productivity is an overall poor reproductive efficiency, characterized by late sexual maturity, seasonal anestrus and long periods of postpartum ovarian inactivity resulting in extended calving intervals and poor expression of estrus behavior (Singh J et al., 2000, Anim. Reprod. Sci. 60–61, 593–604). Buffaloes are seasonal breeders with the highest reproductive activities during winter (short day lengths) and a high frequency of anestrus during the summer months (Singh G et al. 1985, Ind. J. Anim. Res. 19, 57–60). Recent research demonstrated that a combination of progesterone, estradiol benzoate and equine chorionic gonadotropin (eCG) was effective for estrus induction and synchronization in buffalo heifers under Mediterranean conditions (Barile et al. 2001, Livestock Prod. Sci. 68, 283–287). The aim of the present study was to investigate the impact of an estrus synchronization protocol on reproductive efficiency of water buffalo during out of the normal breeding season. A total of six heifers (21 to 23 months of age) and three cows (5, 6 and 18 years of age) were enrolled in an estrus synchronization protocol lasting for 12 days. All animals were kept under tropical conditions in the coastal part of Paraná (Antonina), about 450km south of São Paulo. The experiment was performed in December, 2002, during the Brazilian summer season, when reproductive efficiency of buffaloes is greatly reduced. On the first day of the protocol (Day 0), animals were implanted with an intravaginal device containing 1g of progesterone (DIB, Syntex SA, Buenos Aires, Argentina) and injected with 10mg estradiol benzoate (Estrogin, Famavet, São Paulo, Brazil). On Day 9, the DIB implant was removed and the animals received 150μg (i.m.) of cloprostenol (Prolise, Syntex SA, Buenos Aires, Argentina) and 2500 IU of eCG (Novormon, Syntex SA, Buenos Aires, Argentina). On Day 11, all animals received 1500 IU of hCG (Vetecor, Lab. Calier, Spain). Artificial insemination (AI) was performed on Day 12 using frozen-thawed semen from a bull of proven fertility. Only one AI was performed per heifer/cow. Pregnancies were determined by ultrasound examination at 53 days following AI and confirmed by rectal palpation at 90 days post AI. The use of this estrus synchronization protocol, followed by fixed-time insemination, resulted in four pregnant heifers (66%) and three pregnant cows (100%). Our results demonstrate that buffalo reproduction can be successful during out-of-breeding season when adequate hormonal treatment is used. Additional experiments should be done to validate the protocol.

scholarly journals Application of hormonal subdoses at acupoint Hou Hai in estrus synchronization protocols of goats

2018 ◽  
Vol 39 (3) ◽  
pp. 1135 ◽  
Author(s):  
Reuber De Carvalho Cardoso ◽  
Larissa Pires Barbosa ◽  
Rosiléia Silva Souza ◽  
Caline Santana da França ◽  
Manoel Diran Maia Ribeiro Junior ◽  
...  
Keyword(s):  
Medroxyprogesterone Acetate ◽  
Statistical Tests ◽  
Estrus Synchronization ◽  
Reproductive Parameters

The objective was to evaluate the efficacy of hormonal subdoses at acupoint Hou Hai in estrus synchronization of goats. Sixty-nine females goats received intravaginal sponges containing 60 mg of medroxyprogesterone acetate for seven days and were randomly distributed among three treatments: T1 (n = 23): application of 125 ?g of PGF2? on the sixth day (D6) and 300 UI of eCG on the seventh day (D7), both intramuscularly (IM); T2 (n = 23) and T3 (n = 23): application 37.5 ?g of PGF2? at D6 and 90 UI of eCG at D7, applied by Hou Hai acupuncture and false acupuncture (IM), respectively. The goats were subjected to hormonal protocol and monitored for the coverage and evaluation of reproductive parameters. The data were subjected to normality analysis, followed by appropriate statistical tests for each variable. Greater numbers of estrus goats were obtained in treatments one (T1 = 100%) and three (T3 = 91.3%) (p < 0.05). No difference was observed (p > 0.05) for sponge removal intervals at the beginning (35.9 h) and end (59.8 h) of estrus, and for the duration of estrus (24.7 h), gestation rate at 30 (77%) and 60 (76.7%) days, and prolificacy (1.9). The use of PGF2? and eCG in subdoses applied to the Hou Hai acupoint or false acupoint was efficient in synchronizing estrus in goats, based on the rate of gestation and prolificity of the animals.

Study of vaginal microbiota of Holstein cows submitted to an estrus synchronization protocol with the use of intravaginal progesterone device

2020 ◽  
Vol 131 ◽  
pp. 1-6
Author(s):  
Daniel Lazzari Quadros ◽  
Ricardo Zanella ◽  
Carlos Bondan ◽  
Giovana Ciacci Zanella ◽  
Fernanda Luiza Facioli ◽  
...  
Keyword(s):  
Vaginal Microbiota ◽  
Holstein Cows ◽  
Estrus Synchronization ◽  
Synchronization Protocol

scholarly journals Evaluation of the short and long estrus synchronization protocol in inseminated sheep with frozen semen

2021 ◽  
Vol 8 (2) ◽  
pp. 73-81
Author(s):  
Yan Pierr Manrique Quispe ◽  
Uri Harold Pérez Guerra ◽  
Julio Málaga Apaza ◽  
Wilbur Rubén Ayma Flores ◽  
Oscar Efrain Cardenas Minaya ◽  
...  
Keyword(s):  
Estrus Synchronization ◽  
Frozen Semen ◽  
Synchronization Protocol
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