Results 171 to 180 of about 56,473 (275)

Behavioral and physiological changes around estrus events identified using multiple automated monitoring technologies.

Journal of Dairy Science, 2015
K. Dolecheck, W. J. Silvia, G. Heersche, Y. Chang, D. Ray, A. Stone, B. A. Wadsworth, J. Bewley   +7 more
semanticscholar   +1 more source

Unravelling Twin Births in German Holstein Cows: Phenotypic Associations, Genetic Analysis and Potential Underlying Genes and Hormones

Journal of Animal Breeding and Genetics, Volume 143, Issue 2, Page 213-222, March 2026.
ABSTRACT Twin births in dairy cattle are rare but present significant challenges for animal welfare, as both the health of the cow and the calves are affected. This causes economic losses, which prompts breeders to select against twin births and identify associated risk factors.
Laura Hüneke, Hatem Alkhoder, Dierck Segelke, Georg Thaller, Christin Schmidtmann   +4 more
wiley   +1 more source

Reproductive performance of dairy cows assigned to either a combination of estrus detection using sensors and timed artificial insemination or to a synchronization program. [PDF]

JDS Commun
Valenza A, Bach A.
europepmc   +1 more source

Factors affecting expression of estrus measured by activity monitors and conception risk of lactating dairy cows.

Journal of Dairy Science, 2015
A. Madureira, B. Silper, T. Burnett, L. Polsky, L. Cruppe, D. Veira, J. Vasconcelos, R. Cerri   +7 more
semanticscholar   +1 more source

Genetic Parameter Estimation for Pregnancy Loss and Their Association With Reproductive and Growth Traits in Brahman Cattle Under Extensive Tropical Conditions

Journal of Animal Breeding and Genetics, Volume 143, Issue 2, Page 365-374, March 2026.
ABSTRACT This study estimated genetic parameters for pregnancy loss (PL) in Brahman cattle and evaluated the genetic correlation of PL with growth and reproductive traits using both the pedigree relationship matrix (A) and pedigree plus genomic relationship matrix (H). Data were collected from two herds in Bolivia, focusing on three age groups: heifers,
Daniel Cardona‐Cifuentes, Lucia G. de Albuquerque, Milagros Arias, Sindy Caivio‐Nasner, Luis Camaripano, Luis G. Gonzalez‐Herrera, Patricia I. Schmidt, Fernando Baldi   +7 more
wiley   +1 more source

Update on direct embryo transfer in sheep: hatched blastocysts increase conception rates. [PDF]

Front Vet Sci
Ciornei ȘG.
europepmc   +1 more source

Feeding characteristics and rumination time of dairy cows around estrus.

Journal of Dairy Science, 2015
C. Pahl, E. Hartung, K. Mahlkow-Nerge, A. Haeussermann   +3 more
semanticscholar   +1 more source

Profile of gonadotropin secretion in male and female rats determined in the tail‐tip blood by ultrasensitive ELISA

Journal of Neuroendocrinology, Volume 38, Issue 3, March 2026.
Abstract There is a need for accurate and less invasive methods of hormonal measurements. Here, we longitudinally determined luteinizing hormone (LH) and follicle‐stimulating hormone (FSH) secretion measured in the tail‐tip blood of male and female rats by ultrasensitive enzyme‐linked immunosorbent assay (ELISA).
Roberta Araujo‐Lopes, Andre F. Gomes, Matheus Viana, Mariana De S. Santos, Ana C. Campideli‐Santana, Soraia Macari, Adelina M. Reis, Raphael E. Szawka   +7 more
wiley   +1 more source

Administering the maternal bovine appeasing substance improves fertility in lactating dairy cows. [PDF]

JDS Commun
Zinicola M, Cooke RF, Larghi F.
europepmc   +1 more source

Short communication: Comparison of estrus characteristics in Holstein heifers by 2 activity monitoring systems.

Journal of Dairy Science, 2015
B. Silper, A. Madureira, M. Kaur, T. Burnett, R. Cerri   +4 more
semanticscholar   +1 more source