Results 31 to 40 of about 201 (116)

A COMPARATIVE STUDY OF PRE-SYNCHRONIZATION PROTOCOLS G7G AND eCG PROTOCOL IN DAIRY COWS IN ANBAR GOVERNORATE, IRAQ [PDF]

Assiut Veterinary Medical Journal
This study was conducted on privately-owned dairy farms in Al-Anbar Province, Iraq, from July 2023 to January 2024. The aim of the study was to evaluate the impact of timed artificial insemination (TAI) on the calving interval (CI), days open (DO), and ...
HANI ALRAWI, ‪ISMAEL KORIDI
doaj   +1 more source

An investigation on the possibility of using eCG for presynchronization prior to ovsynch in dairy cow [PDF]

Iranian Journal of Veterinary Medicine, 2018
Background: Presynchronization could enhance fertility in timed breeding programs. The best presynchronization method has to justify biological requirements and to provide practical and economic advantages.
Amir Niasari-Naslaji, Hadi Kavousi Nodar, Mahdi Vojgani, Farid Heidari   +3 more
doaj   +1 more source

Fertility response of lactating dairy cows subjected to three different breeding programs under subtropical conditions

Beni-Suef University Journal of Basic and Applied Sciences, 2019
Background It is comprehensively recognized that reduced reproductive efficiency represents a great economic loss to dairy producers. Ovarian cysts and anestrus syndromes are considered the greatest significant causes of low reproductive efficiency in ...
Abdeltawab Abdelrazek Yassin Khalil
doaj   +1 more source

Expression and detection of estrus in dairy cows: the role of new technologies

Animal, 2014
Despite the widespread adoption of hormonal synchronization protocols that allow for timed artificial insemination (AI), detection of estrus plays an important role in the reproductive management program on most dairies in the United States.
P.M. Fricke, P.D. Carvalho, J.O. Giordano, A. Valenza, G. Lopes, Jr, M.C. Amundson   +5 more
doaj   +1 more source

Insulin-like growth factor-1 gene expression in the endometrium of repeat breeder cows after the administration of presynch-10 and ovsynch protocol

Ankara Üniversitesi Veteriner Fakültesi Dergisi, 2020
The aim of this study was to investigate the effects of using presynch-10 and ovsynch synchronization protocols on endometrial expression and serum levels of insulin-like growth factor-1 (IGF-1) that thought to play roles during endometrial healing process in cows diagnosed with repeat breeder syndrome (RBS) and subclinical endometritis (SE).
Ali Reha AĞAOĞLU, Özgecan KORKMAZ AĞAOĞLU, Özge SİDEKLİ, Mesih KOCAMÜFTÜOĞLU   +3 more
openaire   +5 more sources

Effect of Anionic Salt Supplementation on Metabolic Profile, Peripartum Diseases and Pregnancy Rate of Dairy Cows During the Prepartum Period

Turkish Journal of Agriculture: Food Science and Technology, 2015
The aim of the present work was to examine the effects of anionic salts (MgCl2 or MgSO4) supplementation on metabolic profile, peripartum diseases and pregnancy rate of dairy cows during the prepartum period.
Mahmut Çinar, Ugur Serbester, Ayhan Ceyhan   +2 more
doaj   +1 more source

Holstein ırkı ineklerde target breeding ve presynch-ovsynch senkronizasyon yöntemlerinin postpartum ilk tohumlamada gebe kalma oranı üzerine etkisi

Eurasian Journal of Veterinary Sciences, 2020
Amaç: Sunulan çalışmada Holstein ırkı ineklerde target breeding ve presynchovsynch senkronizasyon protokollerinin ilk tohumlamadaki gebe kalma oranı üzerine etkilerinin belirlenmesi amaçlanmıştır. Gereç ve Yöntem: Çalışmada postpartum 30-35. günler arasında olan ve 2,5-6 yaşlı 160 sağlıklı Holstein ırkı inek kullanıldı.
Alkan, Hasan, Alkan, Kübra Karakaş
openaire   +2 more sources

Reproductive physiological outcomes of dairy cows with different genomic merit for fertility: Biomarkers, uterine health, endocrine status, estrus features, and response to ovarian synchronization

Journal of Dairy Science
: Our overarching objective was to characterize associations between genomic merit for fertility and the reproductive function of lactating dairy cows in a prospective cohort study.
E.M. Sitko, A. Laplacette, D. Duhatschek, C. Rial, M.M. Perez, S. Tompkins, A.L. Kerwin, J.O. Giordano   +7 more
doaj   +1 more source

Ovarian function and endocrine phenotypes of lactating dairy cows during the estrous cycle are associated with genomic-enhanced predictions of fertility potential

Journal of Dairy Science
: The objectives of this prospective cohort study were to characterize associations among genomic merit for fertility with ovarian and endocrine function and the estrous behavior of dairy cows during an entire nonhormonally manipulated estrous cycle ...
E.M. Sitko, A. Laplacette, D. Duhatschek, C. Rial, M.M. Perez, S. Tompkins, A.L. Kerwin, R.R. Domingues, M.C. Wiltbank, J.O. Giordano   +9 more
doaj   +1 more source

Association of genomic predictions for fertility traits with reproductive outcomes in dairy cows under 2 estrus detection and timed artificial insemination programs

Journal of Dairy Science
: Genomic prediction of daughter pregnancy rate (GDPR) and cow conception rate (GCCR) are fertility traits developed to help improve selection for reproductive performance.
D.B. Melo, R.G.S. Bruno, R.S. Bisinotto, F.S. Lima   +3 more
doaj   +1 more source