Results 181 to 190 of about 2,018,275 (336)

Validation of aerial photogrammetry methods to measure body size, condition and mass in small cetaceans

The Journal of Physiology, EarlyView.
Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Riccardo Cicciarella, Erik P. Willems, Benjamin Markham, Manuela R. Bizzozzero, Wayne Phillips, Simon J. Allen, Michael Krützen, Fredrik Christiansen   +7 more
wiley   +1 more source

CALVING INTERVAL AND SERVICE PERIOD OF GUZERAT COWS

, 2009
Avaliou-se a influência de fatores de meio ambiente sobre o intervalo entre partos (IEP) e período de serviço (PS) de 280 observações de vacas Guzerá leiteiras, da segunda a sexta ordem de parto, em duas estações do ano (chuvosa - março a agosto e seca – setembro a fevereiro), de 1988 a 1998. As médias e os desvios-padrão de IEP e PS foram de 14,72 ± 2,
Rangel, Adriano Henrique do Nascimento, Guedes, Paulo Leonardo Correia, Albuquerque, Rômulo Pontes Freitas, Novais, Luciano Patto, Lima Júnior, Dorgival Morais   +4 more
openaire   +1 more source

The Impact of Feeding Organic Trace Minerals Using Advanced Chelate Technology on Reproductive Efficiency and Blood Parameters in Ghezel Ewes

Veterinary Medicine and Science, Volume 12, Issue 2, March 2026.
Supplementing the flushing diet with organic trace minerals based on advanced chelate technology enhanced the reproductive performance of ewes as compared with inorganic trace minerals. ABSTRACT Background The bioavailability of trace minerals (TM) in a diet is important for improving reproductive performance and fertility parameters.
Sedigheh Vatankhah, Marziyeh Ebrahimi, Gholamali Moghaddam, Davoud Kianifard, Akbar Taghizadeh, Reza Asadpour, Mohammad Hassan Nazaran   +6 more
wiley   +1 more source

Fecundity of the Lagune Cow in Benin. Age at first calving and Calving Intervals

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 2005
Data collected from 1987 to 2003 at the Samiondji farm in Benin were used to study the age at first calving (n = 200) and calving intervals (n = 805) in the Lagune cow. The age at first calving was 1373 ± 180 days (4 ± 0.5 years) and calving intervals were 426 ± 85 days (14 ± 2.8 months).
T.I. Alkoiret, A.B. Gbangboche
openaire   +1 more source

Economic Value of Days Open for Holstein Cows of Alternative Milk Yields with Varying Calving Intervals

, 1984
Federico J. Holmann, C. Richard Shumway, Robert W. Blake, Robert B. Schwart, E. M. Sudweeks   +4 more
openalex   +1 more source

Microsatellite Polymorphisms and its Relationship with Calving Interval and Gestation Period in Bali Cattle [PDF]

, 2018
I Ketut Puja, I Nyoman Sulabda, I Nengah Wandia   +2 more
openalex   +1 more source

The American Black Bear (Ursus americanus) as an Apex Predator: Investigating the Ecological Role of the World's Most Abundant Large Carnivore

Mammal Review, Volume 56, Issue 1, March 2026.
Black bears as apex predators. American black bears can (1) produce top‐down effects on ungulates equal to or exceeding those of typical apex predators and (2) modify the spatiotemporal behaviour of other carnivores, including pumas and coyotes. We argue that the term ‘apex predator’ is highly context dependent and not a species‐wide status.
John M. Nettles, Caroline M. Abramowitz, Wesley W. Boone, Stephen N. Harris, Chloe E. Horton, Meghan P. Keating, Dana L. Nelson, Samantha N. Smith, Katelyn N. Steen, Erin K. Buchholtz, David S. Jachowski   +10 more
wiley   +1 more source

Genetic analysis of postpartum measures of luteal activity in dairy cows [PDF]

, 2007
Berglund, B., Flint, A.P.F., Gustafsson, H., Petersson, K.J., Royal, M.D., Strandberg, E., Woolliams, John   +6 more
core   +1 more source

Ammonia Concentration in Urine of Dairy Cows in Different Phases of Calving Interval [PDF]

, 1987
M. Lebeda, Zdena Urbánková
openalex   +1 more source

Palaeoglacier reconstruction and dynamics of Cordillera Vilcanota in the tropical high Peruvian Andes

Earth Surface Processes and Landforms, Volume 51, Issue 2, February 2026.
We provide a geomorphological analysis of Cordillera Vilcanota and use morphostratigraphic principles to reconstruct palaeo icefield extent and palaeoglacier readvances, likely during the Antarctic Cold Reversal and Younger Dryas. We find evidence of temperate and polythermal ice margins, with limited glaciofluvial landform generation.
Bethan Davies, Tom Gribbin, Owen King, Tom Matthews, Jan R. Baiker, Wouter Buytaert, Jonathan Carrivick, Fabian Drenkhan, Juan‐Luis García, Nilton Montoya, L. Baker Perry, Jeremy Ely   +11 more
wiley   +1 more source