Results 81 to 90 of about 81,652 (368)

Glucagon-like peptide-1 (GLP-1) increases in plasma and colon tissue prior to estrus and circulating levels change with increasing age in reproductively competent Wistar rats

, 2017
There is a well-documented association between cyclic changes to food intake and the changing ovarian hormone levels of the reproductive cycle in female mammals.
Johnson, Michelle L., Saffrey, M. Jill, Taylor, Victoria J.   +2 more
core   +1 more source

Analysis of reproduction-related transcriptomes on pineal-hypothalamic-pituitary-ovarian tissues during estrus and anestrus in Tan sheep

Frontiers in Veterinary Science, 2022
Seasonal estrus is an important factor limiting the fertility of some animals such as sheep. Promoting estrus in the anestrus season is one of the major ways in improving the fecundity of seasonally breeding animals.
Shihao Wei, Xiaolong Kang, Chaoyun Yang, Feng Wang, Tianshu Dai, Xingru Guo, Ziming Ma, Chenglong Li, Hongxi Zhao, Xingang Dan   +9 more
doaj   +1 more source

The mating behavior and reproduction performance in a multi-sire mating system for pigs [PDF]

, 2008
An important aim of organic animal production is to allow natural animal behaviour. Regarding reproduction techniques, artificial insemination is permitted but natural mating is preferred.
Hermansen, J.E., Kongsted, A.G.
core  

Histochemical indications for a chemically complex signal produced by the cervical gill slit gland of the pygmy sperm whale (Kogia breviceps)

The Anatomical Record, EarlyView.
Abstract The pygmy sperm whale (Kogia breviceps) possesses an exocrine gland associated with its false gill slit pigmentation pattern. The cervical gill slit gland is a compound tubuloalveolar gland that produces a holocrine secretion and displays maturational changes in size and secretory histology. While the morphology of the cervical gill slit gland
Tiffany F. Keenan, William A. McLellan, Sentiel A. Rommel, Alexander M. Costidis, Craig A. Harms, J. G. M. Thewissen, Susan J. Rehorek, David S. Rotstein, Mark D. Gay, Alison R. Taylor, Heather N. Koopman, Ying Wang, Stephanie Kamel, D. Ann Pabst   +13 more
wiley   +1 more source

Gonadotropin-Releasing Hormone Increased Pregnancy in Suckled Beef Cows Not Detected in Estrus and Subjected to a Split-Time Artificial Insemination Program

, 2018
Estrus-synchronization programs allow insemination of all females in a herd at one fixed time on the first day of the breeding season. Inseminating cows after they have expressed estrus increases pregnancy rate (PR) compared with cows that do not display
S. L. Hill, D. Grieger, K. Olson, J. Jaeger, K. Harmoney, C. Dahlen, M. Crosswhite, N. N. Pereira, S. R. Underdahl, B. Neville, J. Ahola, M. C. Fischer, G. E. Seidel, J. Stevenson   +13 more
semanticscholar   +1 more source

The efficiency of vaginal temperature measurement for detection of estrus in Japanese Black cows

Journal of reproduction and development, 2016
Recently, weak estrous behavior was assumed to be the cause of a decline in breeding efficiency in cattle. The present study investigated the effect of measuring the vaginal temperature on the detection of estrus in Japanese Black cows. First, the effect
M. Sakatani, Masashi Takahashi, N. Takenouchi   +2 more
semanticscholar   +1 more source

The Known and Unknown About Female Reproductive Tract Mucus Rheological Properties

BioEssays, EarlyView.
Mucus viscosity changes as spermatozoa travel through the female reproductive tract to the egg in humans, bovines, mice, and other mammals. These changes may aid in spermatozoa navigation. However, limited information is available on the viscoelastic properties of female reproductive tract mucus, and consistent measurement techniques are lacking ...
Luke Achinger, Derek F. Kluczynski, Abigail Gladwell, Holly Heck, Faith Zhang, Ethan Good, Alexis Waggoner, Mykala Reinhart, Megan Good, Dawson Moore, Dennis Filatoff, Supriya Dhar, Elisa Nigro, Lucas Flanagan, Sunny Yadav, Trinity Williams, Aniruddha Ray, Tariq A. Shah, Matthew W. Liberatore, Tomer Avidor‐Reiss   +19 more
wiley   +1 more source

NÚMERO DE INSEMINAÇÕES ARTIFICIAIS POR ESTRO EM FÊMEAS SUÍNAS: ASSOCIAÇÃO COM O PERFIL ESTRAL E IMPACTO SOBRE O DESEMPENHO REPRODUTIVO

Ciência Animal Brasileira, 2010
In swine, multiple artificial inseminations (AI) are commonly performed per estrus due to the long estrus duration. This observational study aimed to evaluate the association among the number of AI conducted per estrus, the estrus duration and the ...
Marcus Vinicius Figueira de Alvarenga, Ivan Bianchi, Antonio Sergio Varela Júnior, Odirlei Calderam, Eduardo Schmitt, Marcio Nunes Corrêa, João Carlos Deschamps, Thomaz Lucia Jr.   +7 more
doaj  

ESTRUS SYNCHRONIZATION WITH MEDROXYPROGESTERONE ACETATE IMPREGNATED SPONGES IN GOATS (CAPRA HIRCUS) [PDF]

Pakistan Veterinary Journal, 2009
An experiment was performed to synchronize estrus in goats by locally prepared progesterone-impregnated sponges and to determine the time of onset and duration of estrus alongwith subsequent fertility rate.
R. KAUSAR, S. A. KHANUM, M. HUSSAIN AND M. S. SHAH
doaj  

Placentophagia in Nonpregnant Rats:\ud Influence of Estrous Cycle Stage and Birthplace [PDF]

, 1976
Prior parturitional experience and genotype have previously been found to affect the proportion of nonpregnant female rats and mice that will eat foster placenta.
Graber, Gary C., Kristal, Dr. Mark B.
core