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Articles de revues sur le sujet « Silent Estrus »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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1

Souhayla O. Hussain and Jawad K. Taher. "Study of estrogen, progesterone and glucose level in cows during overt and silent estrus." University of Thi-Qar Journal of agricultural research 11, no. 1 (2022): 79–83. http://dx.doi.org/10.54174/utjagr.v11i1.163.

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Significant economic losses result from increased days open because of failure to detect estrus. Studies (Callahan, et al., 1971; Kesler,et al., 1977) suggest that the endocrine balances required to support normal estrus cycles and for the reestablishment of fertility are restored gradually after calving. Silent estrus, or the lack of behavioral estrus expression, is a common occurrence (50 to 80%) at the first postpartum ovulation. However, the incidence of silent estrus decreases in the second and third estrous cycles (Bulman,1980 ; Labhsetwar, et al., 1946; Morrow, et al., 1966). Expression

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Liu, Wenju, Chao Du, Liangkang Nan, et al. "Influence of Estrus on Dairy Cow Milk Exosomal miRNAs and Their Role in Hormone Secretion by Granulosa Cells." International Journal of Molecular Sciences 24, no. 11 (2023): 9608. http://dx.doi.org/10.3390/ijms24119608.

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Estrus is crucial for cow fertility in modern dairy farms, but almost 50% of cows do not show the behavioral signs of estrus due to silent estrus and lack of suitable and high-accuracy methods to detect estrus. MiRNA and exosomes play essential roles in reproductive function and may be developed as novel biomarkers in estrus detection. Thus, we analyzed the miRNA expression patterns in milk exosomes during estrus and the effect of milk exosomes on hormone secretion in cultured bovine granulosa cells in vitro. We found that the number of exosomes and the exosome protein concentration in estrous

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BALAGANUR, KRISHNAPPA, S. S. MISRA, AJIT SINGH MAHLA, et al. "Comparative assessment on the effect of long vis-à-vis short-term progesterone priming on reproductive attributes in silent estrus goats." Indian Journal of Animal Sciences 94, no. 10 (2024): 866–70. http://dx.doi.org/10.56093/ijans.v94i10.151044.

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Silent estrus results in spread-out kidding and extended inter-kidding interval in goats. Progesterone (P4) priming for 12-14 days could be one of the approaches for estrus induction with optimum fertility. The present work was carried to comparatively assess the duration of P4 priming on estrus and fertility in silent estrus goats. Sirohi does (n=18) with a history of anestrus and high basal P4 in paired samples were equally divided into three groups. Does in P-0 d group received 200 IU of equine chorionic gonadotropin by intramuscular route. Does in group second and third were subjected to p

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Kharel, C. N., B. Devkota, S. K. Sah, and R. K. Karki. "Evaluation of Ovsynch Protocol on Reproductive Performance of Anestrous Buffaloes during Breeding Season in Chitwan, Nepal." Nepalese Veterinary Journal 34 (December 21, 2017): 41–50. http://dx.doi.org/10.3126/nvj.v34i0.22902.

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This study evaluated the effectiveness of Ovsynch/FTAI protocol (day 0 fertirelin inj. 100μg I/M, day 7 cloprostenol inj. 500μg I/M, day 9 fertirelin inj. 100μg I/M, and day 10 fixed time artificial insemination 18 hours after second injection of fertirelin) in anestrous buffaloes of Chitwan, Nepal (n=14). Protocol was evaluated in terms of estrus characteristics, ovulation and pregnancy rate. Responses were analyzed by grouping the buffaloes based on type of anestrus, length of anestrus, body condition score (BCS), milking status, parity, age, management condition, follicle count on day of se

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Melia, J., R. A. Sarah, E. Rahmi, D. Dasrul, and H. Sofyan. "Gayo horse’s estrogen concentration after pospartum silent heat therapy using intramuscularly vitamin A, D, E." IOP Conference Series: Earth and Environmental Science 1356, no. 1 (2024): 012039. http://dx.doi.org/10.1088/1755-1315/1356/1/012039.

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Abstract Silent heat is a condition in which livestock does not show symptoms of heat but physiologically estrus occurs due to low concentrations of the estrogen. Vitamins are small organic compounds that are needed by horses for the process of development, reproduction, and activity. Vitamin preparations are easily obtained and economically for breeders. This research aimed to observe differences in estrogen concentrations in postpartum silent heat gayo horses before and after therapy using intramuscularly vitamins A, D, E. Four of six gayo mares suspected of postpartum silent heat after diag

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KUMAR, HARENDRA, NEERU BHOOSHAN, R. S. DASS, and S. NANDI. "Supplementation of area specific mineral mixture improves the reproductive performance in buffaloes—a field study." Indian Journal of Animal Sciences 82, no. 10 (2012): 1245–47. http://dx.doi.org/10.56093/ijans.v82i10.24320.

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In a field trial the efficacy of area specific mineral mixture (ASMM) supplementation on reproductive efficiency in buffaloes was assessed. Out of the 280 buffaloes examined, 220 had postpartum anestrus (40%) and repeat breeding (20%) followed by delayed sexual maturity (20%), silent heat (10.9%) and endometritis of mild to moderate degree (9.09%). Among the postpartum anestrus buffaloes 52.27% and 45.65% exhibited estrus and conceived, respectively, within 3 months of ASMM supplementation. Among the repeat breeders, which received the ASMM, 38.63% conceived within 3 inseminations. Onset of es

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Abulaiti, Adili, Zahid Naseer, Zulfiqar Ahmed, Dong Wang, Guohua Hua, and Liguo Yang. "Effect of Different Synchronization Regimens on Reproductive Variables of Crossbred (Swamp × Riverine) Nulliparous and Multiparous Buffaloes during Peak and Low Breeding Seasons." Animals 12, no. 4 (2022): 415. http://dx.doi.org/10.3390/ani12040415.

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The present study was conducted to examine the effect of conventional the Ovsynch protocol (OVS) and a modified Ovsynch synchronization (GPGMH) protocol on the follicular dynamics, estrus, ovulation, and pregnancy in nulliparous and multiparous crossbred (swamp × riverine) buffaloes during different seasons. GPGMH or OVS protocols were used to synchronize nulliparous (n = 128; GPGMH = 94, OVS = 34) and multiparous (n = 154; GPGMH = 122, OVS = 32) buffaloes during the peak (n = 186; GPGMH = 143, OVS = 43) and low breeding (n = 96; GPGMH = 73, OVS = 23) seasons. Buffaloes were monitored for foll

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Mishra, Rabindra Mohan, Sanjay Kumar Ravi, B. Balamurugan, et al. "Effect of Exogenous Human Kisspeptin-10 on Concentration of Estradiol, Progesterone and Its Response on Expression of Estrus Signs in Bhadawari Buffaloes." UTTAR PRADESH JOURNAL OF ZOOLOGY 46, no. 6 (2025): 156–68. https://doi.org/10.56557/upjoz/2025/v46i64853.

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Kisspeptin is identified as a neuropeptide having its response on various endocrines leading to significant impact on reproductive physiology in livestock. The aim of the research was to evaluate the effect of Human Kisspeptin-10 (hKp10) on the concentration of plasma estradiol (E2), progesterone (P4) and visual estrus signs in cyclic Bhadawari buffalo. Four cyclic Bhadawari buffaloes pre-fitted with jugular cannula were administered hKp10 @ 1.5, 2.5, 5 µg/ kg body weight (bw) and 2ml normal saline (NS) as a control on D10 of estrous cycle (D0- Day of estrus) in a fashion that none of the buff

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Efendy, Jauhari, and Frediansyah Firdaus. "Deskripsi dan fenomena yang terjadi pada perkawinan alami sapi Peranakan Ongole (PO) dengan sapi Bali di Kandang Percobaan Loka Penelitian Sapi Potong." Livestock and Animal Research 19, no. 1 (2021): 54. http://dx.doi.org/10.20961/lar.v19i1.41835.

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<p><strong>Objective:</strong> To determine the natural mating behavior pattern of PO bulls with Bali cows in the cattle breeding system using freestall housing of “Litbangtan Model”.</p><p><strong>Methods:</strong> The materials were 63 livestock; 3 PO bulls and 60 Bali cows. The study was designed with a randomized block design (RBD) with three treatments based on the physiological status of Bali cows; namely Treatment A: 20 heifers, Treatment B: 10 heifers and 10 cows, and Treatment C: 20 cows. The parameters observed were the pattern of estrous beh

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Rodrigues, Paula de Almeida, Lia de Alencar Coelho, Keico Okino Nonaka, et al. "Annual characteristics of estrous activity in wool and hair ewe lambs under subtropical conditions." Scientia Agricola 64, no. 5 (2007): 468–75. http://dx.doi.org/10.1590/s0103-90162007000500003.

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The increased emphasis placed on lamb production in Brazil points to the need for a better knowledge of the annual pattern of reproductive activity in ewe lambs. This study evaluates the annual estrous activity pattern of hair and wool ewe lambs raised in southeast Brazil. Estrous characteristics were recorded for 12 months in ten Santa Inês and 21 Romney Marsh and Suffolk ewe lambs. Santa Inês ewe lambs exhibited a greater length of the normal estrous cycle (14 to 19 days) than Romney Marsh and Suffolk ewe lambs (17.0 ± 0.1 days vs. 16.5 ± 0.2 and 15.9 ± 0.2 days). All the ewe lambs presented

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SUTARIA, TARUNKUMAR VIRABHAI, RAVJIBHAI KARSHANBHAI CHAUDHARI, BHAVESH I. PRAJAPATI, PRAJWALITA TARUNKUMAR SUTARIA, and CHANDRAKANT FULJIBHAI CHAUDHARI. "Therapeutic management of marwari mares suffering from bacterial endometritis vis-à-vis antimicrobial sensitivity." Indian Journal of Animal Sciences 95, no. 3 (2025): 204–11. https://doi.org/10.56093/ijans.v95i4.154191.

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Inappropriate use of antibiotics to treat infectious endometritis in mares can lead to increased antimicrobial resistance (AMR) and, ultimately, hinder the success of achieving pregnancy. This study aims to investigate the diagnosis and treatment of infectious endometritis in sub-fertile Marwari mares. The mares with a reproductive history of either failure of conception upon repeated covering or failure to exhibit estrus were investigated through trans-rectal real-time B-mode ultrasonography for intra uterine fluid-IUF, endometrial cytology-EC and bacteriology. The 61 mares (repeat breeder-50

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Sushil, Kumar Nandini Panwar Newton Biswas. "Advancing estrous detection in dairy animals: challenges, innovations, and future directions." Vet Farm Frontier 02, no. 04 (2025): 26–29. https://doi.org/10.5281/zenodo.15362403.

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Accurate estrus detection is critical for optimizing reproductive performance and ensuring the economic sustainability of dairy operations. Traditional estrus detection methods, primarily based on visual observation of behavioral signs, face significant limitations in terms of accuracy, labor intensity, and applicability in large-scale settings. These challenges are further compounded by the high prevalence of silent ovulation and sub-estrus conditions, particularly in high-producing dairy animals, where metabolic stress and altered hormonal profiles suppress visible estrus expression. In buff

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Mansur, Musdalifa, Athhar Diansyah, Rahmat Rahmat, et al. "<b>Reproductive disorders in Simmental cattle: Enhancing fertility through a hormonal protocol</b>." Open Veterinary Journal 15, no. 5 (2025): 2112. https://doi.org/10.5455/ovj.2025.v15.i5.29.

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Background: Reproductive disorders, including abortion, endometritis, and silent estrus, present significant challenges to fertility and productivity in Simmental cattle, particularly under semi-intensive farming systems. These conditions disrupt physiological and hormonal functions, impairing reproductive outcomes. Aim: This study aimed to evaluate the effectiveness of hormonal protocols in addressing these disorders by assessing reproductive tract size (RTS), cervical mucus characteristics, and fertility outcomes in cattle with varying reproductive health statuses. Methods: Healthy cattle ex

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Lumahmina, Winda, Demianus Souhoka, and Isak Siwa. "PENAMPILAN REPRODUKSI INDUK TERNAK BABI DI KECAMATAN TELUK AMBON." MARSEGU : Jurnal Sains dan Teknologi 1, no. 6 (2024): 538–45. http://dx.doi.org/10.69840/marsegu/1.6.2024.538-545.

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The development of the livestock sub-sector is a crucial component of the national agricultural sector's progress. This study aims to evaluate the performance of the reproductive system of pig breeders in Teluk Ambon District. The method employed in this study is a survey method, involving data collection from all pig farmers (census) in the Ambon District area. The variables observed in this study pertain to the population structure and reproductive performance of pig breeders, including the age of sexual maturity, age at first mating, signs of estrus, duration of estrus, estrus cycle, mating

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S. Maheswari, K. Ravikumar, R. Sureshkumar та ін. "SUCCESSFUL MANAGEMENT OF FALSE ANESTRUS IN A PUNGANUR COW BY DOUBLE PGF2α PROTOCOL". Indian Journal of Veterinary and Animal Sciences Research 54, № 3 (2025): 58–62. https://doi.org/10.56093/ijvasr.v54i3.167845.

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A pluriparous Punganur cow calved 9 months back was presented to Large Animal Gynaecology Unit with the history of anestrus. On rectal examination, uterus was flaccid and uterine horns were similar. Transrectal ultrasonography revealed presence of corpus luteum in the right ovary and small follicles in the left ovary. Based on the history, per rectal examination and transrectal ultrasonography, the case was diagnosed as false anestrus due to silent estrus. Double prostaglandin (PGF2α) protocol was followed. After first injection of PGF2α, animal was examined on day 11 where the ultrasonography

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Roers, Kallista, Shannon L. Dierking, and Crystal L. Levesque. "PSI-A-9 A Comparison in Vaginal Gene Expression and Circulating Hormone Concentration in Pre-Pubertal Gilts Achieving Puberty at Different Ages." Journal of Animal Science 101, Supplement_2 (2023): 354–55. http://dx.doi.org/10.1093/jas/skad341.402.

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Abstract A known predictor of reproductive success in swine breeding herds is age at puberty. Early puberty is associated with improved long-term reproductive performance and more high-quality offspring. The objective of this study was to compare vaginal gene expression in gilts that achieved estrus early (160 to 181 d of age), average (181 to 202 d of age), late (202 to 215 d of age) and anestrus. Pre-pubertal gilts (n = 13) were followed from 70 d of age until first estrus or 214 ± 1 d. Vaginal epithelia was collected using a swabbing method at five time points during reproductive developmen

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Wakayo, B., No author No author, and P. Prabhakar. "Review on mechanisms of dairy summer infertility and implications for hormonal intervention." Open Veterinary Journal 5, no. 2 (2015): 6. http://dx.doi.org/10.5455/ovj.2015.v5.i1.p6.

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In dairy cows and buffaloes, summer heat stress (HS) reduces milk yield and delays return to pregnancy leading to financial loss. Clues for effective interventions against summer infertility (SI) lie in understanding the underlying mechanisms. This article reviews current knowledge on the mechanisms of bovine SI and their implication for hormonal management. Under HS dairy animals encounter anestrous, silent cycles and repeat breeding which extend their open period. These effects are attributed mainly to HS induced disturbances in luteinizing hormone (LH) secretion, follicular dominance and es

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Utomo, Budi, Rimayanti Rimayanti, Tjuk Imam Restiadi, and Muhammad Fajar Amrullah. "Reproductive disorders of cows in several villages of Kedamean district, Gresik regency, East Java, Indonesia in 2023." Ovozoa: Journal of Animal Reproduction 13, no. 1 (2024): 18–29. http://dx.doi.org/10.20473/ovz.v13i1.2024.18-29.

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Reproductive disorders are the main cause of economic losses in beef herds. This study aimed to determine the type of reproductive disorder in beef cows in Kedamean district, Gresik regency, related to feeding, age, and parity. The method used for this study was a survey. Primary data was obtained from field surveys by interviewing farmers, animal health officials, inseminators, and direct inspection of cows and pens. Secondary data was obtained from the Gresik Animal Husbandry and Animal Health Service. The data obtained was then compiled and performed descriptively. The results showed that t

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Kumar, R. Suresh, K. Krishnakumar, S. Balasubramanian та ін. "Serum estradiol 17β and progesterone levels during different phases of estrous cycle in silent estrus Murrah buffaloes". Journal of Entomology and Zoology Studies 9, № 1 (2021): 2092–95. http://dx.doi.org/10.22271/j.ento.2021.v9.i1ac.8440.

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Dierking, Shannon L., Jodi Morton, Juan Carlos Pinilla, Michael Gonda, Jeffrey A. Clapper, and Crystal L. Levesque. "173 Identification of Biological Markers to Detect Early Estrus in Pre-Pubertal Gilts." Journal of Animal Science 100, Supplement_2 (2022): 86–87. http://dx.doi.org/10.1093/jas/skac064.140.

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Abstract A proven predictor of reproductive success in swine breeding herds is age at puberty. Early puberty is associated with improved long-term reproductive performance. The objective of this study was to identify biomarkers of reproductive success at key periods in gilt reproductive development. Pre-pubertal gilts (n = 13) in 2 cohorts were followed from 70 d of age until first estrus or 213-215 d of age. Vaginal epithelia were collected using a swabbing technique at 5 key timepoints during reproductive development (70/77, 100/110, 130, 160 d of age, and first estrus or end of trial). Of t

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Dierking, Shannon L., Jodi Morton, Juan Carlos Pinilla, et al. "279 Identification of Potential Biomarkers of Reproductive Development in Vaginal Gene Expression Associated with Serum Concentrations of Reproductive Hormones at key Periods in Gilt Development." Journal of Animal Science 100, Supplement_3 (2022): 127–28. http://dx.doi.org/10.1093/jas/skac247.244.

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Abstract Early puberty in gilts is associated with long-term reproductive performance. The ability to predict who will achieve early puberty is limited to intensive and invasive collection of serial blood samples to assess reproductive hormones, which is not practical for on-farm use. The objective of this pilot study was to characterize changes in gene expression in the vaginal epithelium related to reproduction during key periods in pubertal development. Pre-pubertal gilts (n =13) in 2 cohorts were followed from 70 d of age until first estrus or 213-215 d of age. Blood and vaginal epithelia

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Roy, BC, M. Moniruzzaman, MH Pasha та ін. "PGF<sub>2α</sub> induced estrus synchronization of native buffaloes in Bangladesh". Bangladesh Journal of Animal Science 50, № 2 (2022): 80–85. http://dx.doi.org/10.3329/bjas.v50i2.58134.

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Buffaloes have low fertility due to silent estrus, seasonal anestrous, delayed puberty and long calving interval. This study was aimed to investigate the effect of single and double doses of prostaglandin F2alpha (PGF2a) on synchronization of estrus in buffaloes. A total of 66 buffaloes were selected and subjected to estrus synchronization experiments: single dose PGF2a, and double dose PGF2a. In single dose PGF2a experiment, buffaloes were injected with either 500 or 875 µg of cloprostenol (PGF2a) and all buffaloes were examined to identify corpus luteum through rectal palpation before admini

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Awasthi, M. K., F. S. Kavani, G. M. Siddiquee, N. P. Sarvaiya, and H. J. Derashri. "Is slow follicular growth the cause of silent estrus in water buffaloes?" Animal Reproduction Science 99, no. 3-4 (2007): 258–68. http://dx.doi.org/10.1016/j.anireprosci.2006.05.014.

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Dharani, K., P. Abinaya, Violet Beaulah J, P. Sridevi, R. Gnanadevi, and T. A. Kannan. "Unlocking the Secrets of Pheromones: Reproductive and Social Communication in Domestic Mammals." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 20 (2024): 210–19. http://dx.doi.org/10.56557/upjoz/2024/v45i204578.

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Pheromones play a pivotal role in the reproductive and behavioural management of livestock, influencing various physiological and behavioural responses within and across species. This review explores the application of pheromones in cattle, buffalo, sheep, goats, pigs, and equines, highlighting their significant impact on reproductive efficiency, stress reduction, and animal welfare. In cattle, pheromones are essential for estrus detection and the enhancement of maternal bonding. Similarly, in buffaloes, urinary pheromones have been identified as markers for estrus detection, aiding in overcom

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Ascari, Ivan Júnior, Nadja Gomes Alves, Ana Carolina Alves, Iraides Ferreira Furusho Garcia, and Felipe Barbosa Junqueira. "Resumption of cyclic ovarian activity in postpartum ewes: a review." Semina: Ciências Agrárias 37, no. 2 (2016): 1101. http://dx.doi.org/10.5433/1679-0359.2016v37n2p1101.

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The reproduction rate is considered a crucial factor that affects the ability of producers to meet the growing demand for ovines meat, and optimizing this factor will maximize the production rate and increase the efficiency of livestock. A reduction in the length of the postpartum anestrus period results in a shorter interval between lambing and conception and enables more lambs to be produced throughout the life of a ewe. This review discusses the current knowledge of several factors associated with the resumption of cyclic ovarian function in postpartum ewes and how the suckling management o

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Hanh, N. V., Q. X. Huu, N. T. Uoc, et al. "162 ESTRUS SYNCHRONIZATION, ARTIFICIAL INSEMINATION, AND PREGNANCY DIAGNOSIS IN WATER BUFFALOES (BUBALUS BUBALIS)." Reproduction, Fertility and Development 19, no. 1 (2007): 198. http://dx.doi.org/10.1071/rdv19n1ab162.

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One of the big obstacles in management of reproductive activity in water buffaloes is their silent estrus. This characteristic prevents the determination of time for artificial insemination (AI), resulting in lengthening of the calving interval (Nguyen et al. 1990 Proc. FAO Workshop, Bulgaria, 210–216). Pregnancy-associated glycoprotein (PAG) measurement in maternal blood is an effective method of early pregnancy diagnosis in ruminant species (Zoli et al. 1992 Biol. Reprod. 46, 83–92). The present study describes a preliminary attempt to improve buffalo reproductive performance by association

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Nelson, E. M., B. L. Kiefer, J. F. Roser та J. W. Evans. "Serum estradiol-17β concentrations during spontaneous silent estrus and after prostaglandin treatment in the mare". Theriogenology 23, № 2 (1985): 241–62. http://dx.doi.org/10.1016/0093-691x(85)90028-7.

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Pasha, M. M. H., M. Z. Rahman, N. Sultana, and M. Moniruzzaman. "Impact of heat stress on female reproduction in farm animals: challenges and possible remedies." Bangladesh Journal of Animal Science 53, no. 3 (2024): 77–100. http://dx.doi.org/10.3329/bjas.v53i3.76533.

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Global warming poses significant challenges to agriculture, particularly within the livestock industry. Heat stress in animals refers to the physiological and metabolic distress experienced when environmental heat causes an animal’s body temperature to exceed its thermoneutral zone. Heat stress has a significant detrimental impact on reproductive outcomes, posing a direct threat to the profitability of livestock operations. Heat stress disrupts the normal hormonal balance essential for reproduction in female livestock, adversely affecting events of folliculogenesis and embryogenesis. As a resu

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Sharma, Ankita, Madhumeet Singh, and Pravesh Kumar. "Prevalence of Gastro-Intestinal Parasitic Infestation in Cows with Various Reproductive Ailments in Tribal Areas of Himachal Pradesh." Indian Journal of Animal Reproduction 45, no. 1 (2024): 16–19. https://doi.org/10.48165/ijar.2024.45.01.4.

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Gastrointestinal (GI) parasitic infection poses a significant concern in cattle management. The influence of gastrointestinal (GI) parasites on reproduction is contingent on multiple factors. Faecal samples were collected from 285 reproductively compromised, normal cyclic and pregnant cattle from five different tribal zones of Himachal Pradesh viz. Lahaul, Spiti, Kinnaur, Pangi and Bharmour. Coprological examination revealed the presence of gastro-intestinal parasites in 47 percent of cattle whereas 52.9 percent cattle were bereft of it. Incidence of gastro-intestinal parasites was highest (15

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1*Paramveer, Singh Sangha 2Harjap Kaur 3Prabhleen Singh. "Effect of Heat Stress on Female Reproduction in Dairy Animals." Science World a Monthly e Magazine 3, no. 6 (2023): 945–50. https://doi.org/10.5281/zenodo.7998773.

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Heat stress impairs fertility and reproductive function in livestock by impairing the physiology of the reproductive tract, resulting in hormonal imbalances, lower oocyte quality, and decreased embryo development and survival. Heat stress reduces luteinizing hormone and estradiol release, resulting in shorter and weaker estrus expression, an increased incidence of anoestrus, and silent heat in agricultural animals. Thermally stressed oocytes lose their ability to fertilise and grow into the blastocyst stage, resulting in lower fertility due to the creation of poor-quality oocytes and embryos.

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Khan, Muhammad Tayyab, Muhammad Muzammal Niaz, and Ghulam Shabbir Khan. "Effect of Dalmavital and Ovulik Plus on conception rate in Ovsynch synchronized Nili-Ravi buf- faloes." Revista Científica de la Facultad de Ciencias Veterinarias 33, Suplemento (2023): 252–53. https://doi.org/10.52973/rcfcv-wbc102.

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Nili-Ravi buffalo are known as the “Black Gold of Pakistan”. It is the most prized dairy animal in Pakistan. Silent estrus and shy behavior are among the main causes of poor reproductive efficiency in buffalo, leading to prolonged calving intervals. Ovulik Plus® is a supplementary mixture for stimulating fertility. It provides energy, eliminates the deficiency of ß-carotene, as well as giving a rich source of vitamins and microelements to elevate reproductive efficiency. Dalmavital® is another product that contains ß-carotene and acts as an antioxidant source. Our objective was to compare the

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Hojo, Takuo, Miki Sakatani, and Naoki Takenouchi. "Efficiency of a pedometer device for detecting estrus in standing heat and silent heat in Japanese Black cattle." Animal Science Journal 89, no. 8 (2018): 1067–72. http://dx.doi.org/10.1111/asj.13023.

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Stancic, Blagoje, Mladen Gagrcin, and Stanimir Kovcin. "Effect of season on fertility of sows." Veterinarski glasnik 56, no. 1-2 (2002): 97–104. http://dx.doi.org/10.2298/vetgl0202097s.

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Reduced fertility of sows during the warmer period of the year is a well-known occurrence in practical production. Namely, during summer months gilts become sexually mature later, the interval from weaning to estrus is prolonged, there is a greater number of postlactation silent estruses anestrias and ovarian cysts, the value of conception is lower, there are more irregular failed fertilizations, there is a higher degree of embryo mortality, and the litter size is smaller. This is why this occurrence presents an important zootechnological, veterinary-medical and economic problem. Most scientif

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MILI, BHABESH, and SUJATA PANDITA. "Effect of dietary supplementation of Vitamin E on the resumption of cyclic ovarian activity in Murrah buffaloes." Indian Journal of Animal Sciences 94, no. 2 (2024): 185–87. http://dx.doi.org/10.56093/ijans.v94.i2.133736.

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The postpartum anestrus and silent estrus are the challenging cause for low reproductive efficiency in buffaloes especially in tropical climate conditions. This study was aimed at assessing the effect of dietary supplementation of vitamin E on the resumption of cyclic ovarian activity in periparturient Murrah buffaloes through plasma progesterone (P4) hormone profiles. The Murrah buffaloes (n=12) were selected during their late gestation based on the expected date of calving that fall between November and February, from ICAR-National Dairy Research Institute livestock herd and were divided ran

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Chapagain, N., B. Devkota, G. Gautam, and S. K. Sah. "Studies on Factors Affecting Pregnancy Rate after Treatment of Anestrus Buffaloes in Chitwan District." Nepalese Veterinary Journal 36 (December 1, 2019): 81–92. http://dx.doi.org/10.3126/nvj.v36i0.27758.

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This study was designed to determine the effects of age, parity, feeding practice, body condition score (BCS), blood nutritional parameters, types of anoestrus, and length of anoestrus on pregnancy rate of anoestrus buffaloes after their treatment with ovsynch protocol followed by fixed time artificial insemination. Blood samples were collected on the day ovsynch protocol and analyzed. The mean values of the nutritional parameters between different groups were compared by Students t test and pregnancy rate was compared by Fisher’s exact test or Chi-square test. The overall pregnancy rate in bu

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GARCIA-ISPIERTO, Irina, та Fernando LÓPEZ-GATIUS. "A Three-day PGF2α Plus eCG-based Fixed-time AI Protocol Improves Fertility Compared with Spontaneous Estrus in Dairy Cows with Silent Ovulation". Journal of Reproduction and Development 59, № 4 (2013): 393–97. http://dx.doi.org/10.1262/jrd.2013-017.

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Chapagain, Navaraj, Bhuminandan Devkota, Gokarna Gautam, Shyam Kishor Sah, and Dinesh Bhattarai. "Studies on Factors Affecting Pregnancy Rate after Treatment of Anestrus Buffaloes in Chitwan District." International Journal of Applied Sciences and Biotechnology 7, no. 2 (2019): 248–56. http://dx.doi.org/10.3126/ijasbt.v7i2.24645.

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This study was designed to determine the effects of age, parity, feeding practice, Body Condition Score (BCS), blood nutritional parameters, types of anoestrus, and length of anoestrus on pregnancy rate of anoestrus buffaloes after their treatment with ovsynch protocol followed by fixed time artificial insemination. Blood samples were collected on the day ovsynch protocol and analyzed. The mean values of the nutritional parameters between different groups were compared by Students t test and pregnancy rate was compared by Fisher’s exact test or Chi-square test. The overall pregnancy rate in bu

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MENEGATOS (Ι. ΜΕΝΕΓΑΤΟΣ), J., S. CHADIO (Σ. ΧΑΔΙΩ), D. KALOGIANNIS (Δ. ΚΑΛΟΓΙΑΝΝΗΣ), et al. "Impact of thyroid status on the response to ram effect in ewes." Journal of the Hellenic Veterinary Medical Society 59, no. 1 (2018): 52. http://dx.doi.org/10.12681/jhvms.14947.

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The role of thyroid hormones on the transition to anestrous has been well established in ewes, but their possible involvement in the induction of reproductive activity remains obscure. The aim of the present study was to investigate the role of thyroid hormones in the induction of the first ovulation in relation to "ram effect" in ewes. Fourty-four ewes of the Greek Zackel mountain type breed were used. The ewes were housed separately from the rams until day 0 (entrance of rams). Blood samples were collected weekly for 4 weeks until 11 weeks after the ram entrance for the determination of thyr

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Aymée, Luiza, Julia Mendes, and Walter Lilenbaum. "Bovine Genital Leptospirosis: An Update of This Important Reproductive Disease." Animals 14, no. 2 (2024): 322. http://dx.doi.org/10.3390/ani14020322.

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Bovine leptospirosis is an important disease that affects the reproductive sphere. Due to its high relevance for the bovine production chain in a worldwide scenario, a better understanding of the disease is crucial to reduce its negative impacts. The main agents are strains from the Sejroe serogroup, such as Hardjo and Guaricura, which lead to renal and genital infection. The genital colonization causes a chronic, silent, and subclinical reproductive syndrome, called Bovine Genital Leptospirosis (BGL). Embryonic death, estrus repetition, subfertility, and abortions are the main signs of BGL co

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Raval, Rupesh J., Kiran H. Parmar, Arjun J. Dhami, and Fulabhai S. Kavani. "Ovarian Follicular Dynamics, and Hormonal and Biochemical Profile in Post-Pubertal and Postpartum Jaffrabadi Buffaloes." INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY 17, no. 01 (2021): 26–30. http://dx.doi.org/10.21887/ijvsbt.17.1.7.

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Jaffrabadi buffalo is one of the heaviest buffalo breeds of the world (800 kg) and is known for poor reproductive efficiency. There is a scarcity of normal physiological data regarding reproductive parameters of Jaffrabadi buffalo. The primary objective of this study was to elucidate ovarian follicular dynamics, hormonal and biochemical profiles in 10 post-pubertal heifers (n=5 each of age 42±2 and 48±2 months) and five >90 days postpartum lactating buffaloes. Ultrasound monitoring of ovaries of animals was done at weekly interval and all follicles with diameter less than 4 mm (small follic

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Khan, Imran, Ayman Mesalam, Yun Seok Heo, Seo-Hyun Lee, Ghulam Nabi, and Il-Keun Kong. "Heat Stress as a Barrier to Successful Reproduction and Potential Alleviation Strategies in Cattle." Animals 13, no. 14 (2023): 2359. http://dx.doi.org/10.3390/ani13142359.

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In recent decades, the adverse effects of global warming on all living beings have been unanimously recognized across the world. A high environmental temperature that increases the respiration and rectal temperature of cattle is called heat stress (HS), and it can affect both male and female reproductive functions. For successful reproduction and fertilization, mature and healthy oocytes are crucial; however, HS reduces the developmental competence of oocytes, which compromises reproduction. HS disturbs the hormonal balance that plays a crucial role in successful reproduction, particularly in

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WOJTCZAK, JANUSZ, MATEUSZ POROWSKI, AGNIESZKA PIETSCH-FULBISZEWSKA, and ZYGMUNT PEJSAK. "Factors and mechanisms influencing seasonal disorders in pig reproduction." Medycyna Weterynaryjna 80, no. 08 (2024): 6894–2024. http://dx.doi.org/10.21521/mw.6894.

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The problem of unsatisfactory reproductive results in pigs is visible in a significant percentage of herds, especially during summer months and early autumn (seasonal summer infertility). This is reflected mainly in the reduced percentage of sows entering estrus after weaning and the effectiveness of mating/insemination. The consequence is a significantly lower number of births in November, December and sometimes even in January, compared to other seasons. There are many causes of seasonal summer infertility. The first things mentioned are usually the length of the light day and the high tempe

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Raval1, R. J., K. B. Vala, V. A. Kalariya, A. J. Dhami, and F. S. Kavani. "Body Weight and Blood Biochemical Changes Following Nutritional Supplementation in Prepubertal Jaffrabadi Buffalo (Bubalus bubalis) Heifers." INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY 15, no. 01 (2019): 50–54. http://dx.doi.org/10.21887/ijvsbt.15.1.11.

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The high plan of nutrition right from an early age is believed to enhance ovarian activity and early onset of puberty in heifers. This study was therefore conducted to know the body weight, ovarian and blood biochemical changes in nutritionally supplemented and control groups of prepubertal Jaffrabadi buffalo (Bubalus bubalis) heifers. A total of 12 animals of 30 ± 2 month's age and the identical body weight of 380–410 kg from Cattle Breeding Farm, JAU, Junagadh were utilized for this study. They were randomly divided into two equal groups of 6 animals in each treatment and control groups. The

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Al-Abbasy, Emad Gh, and Abdulla I. Noaman. "Effect of Fed Omega-3 Addition on Milk Production and Some Reproductive Standards in Cypriot Goats." IOP Conference Series: Earth and Environmental Science 1060, no. 1 (2022): 012077. http://dx.doi.org/10.1088/1755-1315/1060/1/012077.

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Abstract This study was conducted at the Ruminant Research Station of the Agricultural Research Department/ Ministry of Agriculture, which is located in Abu Ghraib area, for the period from 12 April 2018 to 26 December 2018. This experiment included 27 Cypriot goats with a weight of 34-48 kg. They were randomly distributed into three groups of equal number (Nine goat in each group). The first group (T1) control group (T2) the second group was given 20 ml / Omega -3 per animal and the third group (T3) was given 40 ml / Omega -3 per animal. The results showed that there was a proper effect of tr

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Shipka, Milan P. "A note on silent ovulation identified by using radiotelemetry for estrous detection." Applied Animal Behaviour Science 66, no. 1-2 (2000): 153–59. http://dx.doi.org/10.1016/s0168-1591(99)00079-9.

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Perez Ardila, Laritza Johana, Maritza Johanna Camacho Santamaria, María Alejandra Vivas Prada, et al. "Síndrome de Neurotoxicidad Irreversible por Efecto del Litio (SILENT) en una Paciente de Latinoamerica, Reporte de un Fenomeno Atipico." Ciencia Latina Revista Científica Multidisciplinar 8, no. 1 (2024): 5216–26. http://dx.doi.org/10.37811/cl_rcm.v8i1.9853.

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El litio sigue siendo el agente de primera línea para el trastorno bipolar. A pesar del conocimiento común sobre el monitoreo de los niveles de litio para prevenir la toxicidad, todavía ocurre en diversos grados. A continuación se presenta una rara secuela de toxicidad por litio, el Síndrome de Neurotoxicidad Irreversible secundaria a Litio (SILENT). Una mujer de la sexta década de la vida funcional a pesar de estar en terapia crónica con litio para el trastorno de estrés postraumático (TEPT) y el trastorno bipolar se presentó en la sala de emergencias con estado mental alterado y convulsiones

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Behery, Fathy A., Ahmed Y. Elnagar, Mohamed R. Akl, et al. "Redox-silent tocotrienol esters as breast cancer proliferation and migration inhibitors." Bioorganic & Medicinal Chemistry 18, no. 22 (2010): 8066–75. http://dx.doi.org/10.1016/j.bmc.2010.09.009.

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Covetta, Alejandro Nelson, and Alejandro Palma. "Sincretismo patológico y los trastornos alimentarios." Journal of Applied Cognitive Neuroscience 5, no. 2 (2025): 1–6. https://doi.org/10.17981/jacn.5.2.2024.6195.

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El presente articulo intenta realizar una descripción longitudinal de los trastornos de la conducta alimentaria desde la instauración silente hasta su posible cronificación repercutiendo en el desarrollo de la personalidad con consecuente impacto en las conductas de afrontamiento frente al estrés. Para explicar este proceso se abordan temas respecto al desarrollo de la personalidad, síntomas de los trastornos de la conducta alimentaria, y se incorporan términos como disolución sintomática activa y pasiva, mutualismo, y simbiosis a fin de poder graficar lo planteado. Por último, se hace referen

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Han, Seong-Kyu, and Allan E. Herbison. "Norepinephrine Suppresses Gonadotropin-Releasing Hormone Neuron Excitability in the Adult Mouse." Endocrinology 149, no. 3 (2007): 1129–35. http://dx.doi.org/10.1210/en.2007-1241.

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Norepinephrine (NE) is considered to exert an important modulatory influence upon the activity of GnRH neurons. In the present study, we used a transgenic GnRH-green fluorescent protein mouse model to examine the effects of NE on the electrical excitability of GnRH neurons in male and female mice. Gramicidin-perforated patch recordings demonstrated that NE (10–100 μm) exerted a robust membrane hyperpolarization, with associated suppression of firing, in more than 85% of male prepubertal and adult GnRH neurons (n = 25). The same hyperpolarizing action was observed in female GnRH neurons from di

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Imran, Sana, Javed Maryam, Asif Nadeem, and Madiha Iqbal. "Pretentious genomic selection signatures in CYP19A1 gene associated with silent estrous behavior in water buffalo in Pakistan." Electronic Journal of Biotechnology 32 (March 2018): 35–40. http://dx.doi.org/10.1016/j.ejbt.2018.01.001.

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