دورية أكاديمية
أعرض في EDS

Effect of season on dairy buffalo reproductive performance when using P4/E2/eCG-based fixed-time artificial insemination management.

التفاصيل البيبلوغرافية
العنوان: Effect of season on dairy buffalo reproductive performance when using P4/E2/eCG-based fixed-time artificial insemination management.
المؤلفون: Monteiro BM; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil. Electronic address: bmmonteiro@usp.br., Souza DC; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil; Rural Development Office, Registro, SP, Brazil., Vasconcellos GSFM; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil., Carvalho NAT; Research and Development Unit of Registro, Ribeira Valley, Registro, Brazil., Baruselli PS; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, Brazil.
المصدر: Theriogenology [Theriogenology] 2018 Oct 01; Vol. 119, pp. 275-281. Date of Electronic Publication: 2018 Jul 29.
نوع المنشور: Clinical Trial; Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: United States NLM ID: 0421510 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-3231 (Electronic) Linking ISSN: 0093691X NLM ISO Abbreviation: Theriogenology Subsets: MEDLINE
أسماء مطبوعة: Publication: [New York, N.Y.?] : Elsevier
Original Publication: Los Altos, Calif., Geron-X.
مواضيع طبية MeSH: Buffaloes*, Chorionic Gonadotropin/*pharmacology , Estradiol/*analogs & derivatives , Estrus Synchronization/*methods , Insemination, Artificial/*veterinary , Progesterone/*pharmacology, Animals ; Estradiol/pharmacology ; Female ; Ovarian Follicle/drug effects ; Pregnancy ; Seasons
مستخلص: This study aimed to compare the reproductive efficiency of dairy buffaloes subjected to TAI protocols based on progesterone, estrogen, and equine chorionic gonadotrophin (P4/E2+eCG) during the fall/winter (n = 168) and spring/summer (n = 183). Buffaloes received an intravaginal P4 device (1.0 g) plus estradiol benzoate (EB; 2.0 mg im) at a random stage of the estrous cycle (D-12). Nine days later (D-3), the P4 device was removed and buffaloes were given PGF 2α (0.53 mg im sodium cloprostenol) plus eCG (400 IU im). GnRH (10 μg im buserelin acetate) was administered 48 h after P4 device removal (D-1). All animals were subjected to TAI 16 h after GnRH administration (D0). Frozen-thawed semen from one bull was used for all TAI, which were all performed by the same technician. Ultrasound examinations were performed on D-12 and D-3 to ascertain cyclicity (presence of CL), D-3 and D0 to measure the diameter of the dominant follicle (ØDF), D+10 to verify the ovulation rate and diameter of the corpus luteum (ØCL), and D+30 and D+45 to detect pregnancy rate (P/AI 30d and 45d, respectively) and embryonic mortality (EM). Fetal mortality (FM) was established between 45 days and birth, and pregnancy loss between 30 days and birth. There were significant differences between fall/winter and spring/summer only for cyclicity rate [76.2% (128/168) vs. 42.6% (78/183); P = 0.02]. The others variables did not differ between the seasons: ØDF on D-3 (9.6 ± 0.2 mm vs. 9.8 ± 0.2 mm; P = 0.35); ØDF on D0 (13.1 ± 0.2 mm vs. 13.2 ± 0.2 mm; P = 0.47); ovulation rate [86.9% (146/168) vs. 82.9% (152/182); P = 0.19]; ØCL on D+10 (19.0 ± 0.3 mm vs. 18.4 ± 0.3 mm, P = 0.20); P/AI on D+30 [66.7% (112/168) vs. 62.7% (111/177); P = 0.31]; P/AI on D+45 [64.8%% (107/165) vs. 60.2% (106/176); P = 0.37]; EM [1.8% (2/111) vs. 3.6% (4/110); P = 0.95]; FM [21.9% (18/82) vs. 8.0% (7/87); P = 0.13]; and PL [23.8% (20/84) vs. 12.1% (11/91); P = 0.13]. In conclusion, dairy buffaloes present similar reproductive efficiency in fall/winter and spring/summer when subjected to P4/E2/eCG-based protocol for TAI.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
فهرسة مساهمة: Keywords: Artificial insemination; Buffalo; Estrus synchronization; Reproduction; Seasonality
المشرفين على المادة: 0 (Chorionic Gonadotropin)
1S4CJB5ZGN (estradiol 3-benzoate)
4G7DS2Q64Y (Progesterone)
4TI98Z838E (Estradiol)
تواريخ الأحداث: Date Created: 20180801 Date Completed: 20181211 Latest Revision: 20181211
رمز التحديث: 20221213
DOI: 10.1016/j.theriogenology.2018.07.004
PMID: 30064074
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-3231
DOI:10.1016/j.theriogenology.2018.07.004