Results 111 to 120 of about 81,652 (368)
Effects of 2, 4, 5-Trichlorophenoxyacetic Acid on Swiss-Webster Mice [PDF]
, 1977 Pure and Commercial samples of the herbicide 2,4,5-trichlorophenoxyacetic acid (2,4,5- T) were tested on Swiss-Webster mice for: (1) interruption of the estrus cycle and (2) teratogenic effects.
Greer, Gerald S.
core +2 more sources
Detection of Estrus by Three Methods
Journal of Dairy Science, 1977 Estrus was detected by three methods in 88 postpartum Holstein cows housed in tie-stalls and allowed free activity 1 to 2 h daily in separate exercise lots. Cows in each of three groups were observed visually for standing estrus by herdsmen. Cows (31) in Group I were observed only visually and served as controls, cows (33) in Group II were fitted with ...
J.S. Stevenson, Jack H. Britt
openaire +3 more sources
Ultrasonic Vocalization Acoustics After Recurrent Laryngeal Nerve Injury and Recovery
The Laryngoscope, EarlyView.Reliable and functional biomarkers in animal models of recurrent laryngeal nerve (RLN) injury are needed to ensure translation of treatments from the laboratory to the clinic. This study aimed to investigate the impact of RLN injury on rodent ultrasonic vocalization (USV) acoustics in both acute and chronic stages of injury.
Robert Morrison +2 more
wiley +1 more source
Features of reproduction and assisted reproduction in the white (Ceratotherium simum) and black (Diceros bicornis) rhinoceros [PDF]
, 2015 Despite the worldwide increase of rhinoceros calf numbers, the growth of the population of white and black rhinoceros is slowing down mainly due to anthropogenic causes, such as poaching and habitat loss.
Govaere, Jan +3 more
core
Journal of Dairy Science, 2015 The objective of this study was to determine risk-factors affecting increase in physical activity during estrus and pregnancy per artificial insemination (P/AI) in lactating dairy cows. Cows were monitored continuously by 2 automated activity monitors [a
A. Madureira +7 more
semanticscholar +1 more source
Synchronization of Estrus in Heifers
The Professional Animal Scientist, 2003 Numerous procedures have been developed to manipulate the estrous cycle of heifers to maximize the number that are in estrus during a short, predefined period with normal fertility-synchronized estrus. Early procedures consisted of synthetic progestins alone [melengestrol acetate; MGA® (Pharmacia and Upjohn Company, Kalamazoo, MI)], prostaglandin F2α ...
openaire +2 more sources
The effect of exogenous glucose infusion on early embryonic development in lactating dairy cows [PDF]
, 2018 peer-reviewedThe objective of this study was to examine the effect of intravenous infusion of glucose on early embryonic development in lactating dairy cows. Nonpregnant, lactating dairy cows (n = 12) were enrolled in the study (276 ± 17 d in milk). On d
Butler, Stephen +9 more
core +2 more sources
Feeding characteristics and rumination time of dairy cows around estrus.
Journal of Dairy Science, 2015 Against the background of decreasing reproduction efficiency, estrus detection is gaining increased importance. The objective of this study was to evaluate changes of feeding characteristics and rumination time in dairy cows in the days around estrus ...
C. Pahl +3 more
semanticscholar +1 more source
People and Nature, EarlyView.Abstract Pastoral practices remain a widespread economic activity across European mountain regions. However, the viability of this activity may be threatened by the recovery of large wild vertebrates associated with passive rewilding, leading to the so‐called human–wildlife conflicts.
P. Acebes +4 more
wiley +1 more source
Revista Brasileira de Zootecnia, 2005 Objetivou-se comparar os efeitos da aplicação de diferentes doses de cloprostenol sódico (doses equivalentes a 50% da convencional), nas vias intramuscular (IM) ou intra-vulvosubmucosa (IVSM), sobre as taxas de sincronização, o intervalo da aplicação ao ...
Marilú Martins Gioso +4 more
doaj +1 more source