Results 71 to 80 of about 423,698 (234)

Reproductive Management of Dairy Cattle Based on Synchronization of Estrous Cycles

Journal of Dairy Science, 1984
High-yielding dairy cows (199) were allotted to a control group or one of two groups for synchronization of estrus. Synchronization of estrus was accomplished by either insertion of a progesterone-releasing intravaginal device (progesterone coil) for 7 days with .5 mg of the prostaglandin analogue cloprostenol (Estrumate) administered 1 day before ...
Y, Folman, M, Kaim, Z, Herz, M, Rosenberg   +3 more
openaire   +2 more sources

Phenological responses to climate change: advancing mating and calving in wild and semi‐captive Caspian red deer

Wildlife Biology, Volume 2026, Issue 3, May 2026.
Species respond to climate change through phenological and spatial shifts. Herbivorous mammals, in particular, are vulnerable due to their direct dependence on seasonal vegetation and the potential misalignment between their reproductive cycles and shifting food availability.
Farid Salmanpour, Zahra Shakoori, Frank van Langevelde, Bahram H. Kiabi, Roumina Sayahnia, Faraham Ahmadzadeh   +5 more
wiley   +1 more source

Estrous Synchronization and Establishment of Pregnancy in Bovine Embryo Transfer Recipients

Journal of Dairy Science, 1987
Characteristics of donors, embryos, recipients, and transfer procedures were examined for relationships with establishment of pregnancy. Data were from records of 1202 embryos transferred by the professional staff of a large embryo transfer company. Average pregnancy rate was 74.6%.
D A, Coleman, R A, Dailey, R E, Leffel, R D, Baker   +3 more
openaire   +2 more sources

EFFECT OF REPRODUCTIVE TRACT DEVELOPMENT AND HORMONAL TREATMENT ON OVARIAN ACTIVITY OF BOS INDICUS HEIFERS

Tropical and Subtropical Agroecosystems, 2019
Evaluation of the reproductive tract development (RTD) is a criterion rarely used when heifers are included in estrous synchronization programs. The objective was to determine the effect of RTD and hormonal treatment (HT) on estrous and ovarian activity ...
Jorge Alonso Peralta Torres, Jesús Ricardo Aké López, José Candelario Segura Correa, Carlos Luna Palomera, Nadia Florencia Ojeda Robertos, Oswaldo Margarito Torres Chablé   +5 more
doaj  

Selection for catatonia: Effect on sexual function and estrous cycle synchronization

Russian Journal of Genetics: Applied Research, 2013
Body, ovary, and uterus weights; estrous cycle; dopamine and norepinephrine levels in the hypothalamus; and testosterone levels in blood plasma have been recorded in 2–3-month old GC female rats selected for elevated catatonia response and compared with the outbred Wistar stock.
D. V. Klochkov, T. A. Alekhina
openaire   +2 more sources

Handmade Biopsy for Genotyping of In Vitro‐Produced Bovine Embryos

Anatomia, Histologia, Embryologia, Volume 55, Issue 3, May 2026.
ABSTRACT Blastocyst biopsy allows genomic selection of pre‐implantation bovine embryos, reducing generation interval and enhancing the genetic gain. We aimed to evaluate the suitability of a simple biopsy procedure, performed by hands, using a splitting microblade and a stereoscope, on in vitro‐produced embryos. Crossbred Bos taurus x B.
Luiz Sergio Almeida Camargo, Carolina Capobiango Romano Quintão, Julia Medeiros Cruz Lima de Martins, Marcos Vinicius Gualberto Barbosa Silva, Agostinho Jorge Reis dos Camargo, Celio Freitas, Daniele Ribeiro Lima de Reis, Marco Antonio Machado, Clara Slade Oliveira   +8 more
wiley   +1 more source

Estrous Synchronization for Beef Cattle

, 1999
This Fact Sheet discusses the potential benefits of estrous synchronization, how the products and programs work, and the results and costs involved. Estrous (heat) synchronization is a management practice that can help beef producers improve production ...
Deutscher, Gene H.
core  

Follicular and endocrine responses in sheep after estrous synchronization using progesterone, prostaglandins (PGF2a) and gonadotrophins

, 2022
RESUMO: A estacionalidade reprodutiva em ovelhas e cabras é a maior limitante no melhoramento produtivo. O controle da estacionalidade em ovelhas é uma importante ferramenta no seu manejo.
Restrepo Cadavid, Ramiro, Henry Osorio, José, Uribe Velásquez, Luis Fernando   +2 more
core  

Cytochrome P450 1A1 influences obesity‐induced pulmonary hypertension

British Journal of Pharmacology, Volume 183, Issue 9, Page 1824-1844, May 2026.
Background and Purpose The contribution of obesity to pulmonary arterial hypertension (PAH) pathophysiology remains poorly understood. Adipose tissue synthesises estrogens via cytochrome P450 (CYP) 19A1 (aromatase), whereas circulating estrogens are metabolised in the lung by CYP1A1.
Joshua P. Dignam, Smriti Sharma, Gregor Aitchison, Ayman Gebril, Ioannis Stasinopoulos, Sofia Laforest, Chelbi Coyle, Ruth Andrew, Natalie Z. M. Homer, Sébastien Bonnet, Sandra Breuils‐Bonnet, Martin Wabitsch, Margaret R. MacLean   +12 more
wiley   +1 more source

G85-741 Estrous Synchronization for Beef Cattle

, 1985
This NebGuide discusses the potential benefits of estrous synchronization, how the products and programs work, and the results and costs involved. Estrous (heat) synchronization can help beef producers improve production efficiency and economic returns ...
Deutscher, Gene H.
core