Results 41 to 50 of about 29,367 (283)

Performance of a glider‐mounted multifrequency echosounder for measuring the vertical distribution and abundance of large pelagic copepods

Limnology and Oceanography: Methods, EarlyView.
Abstract The difficulty of sampling zooplankton communities in situ has driven advancements in autonomous, remote sensing technology. The goal of this paper was to perform a gear comparison study testing the performance of one such piece of technology—a glider‐mounted four‐frequency echosounder—against traditional shipboard methods of measuring ...
Delphine Mossman, Joseph D. Warren, Natasha J. Hynes, Kimberley T. A. Davies   +3 more
wiley   +1 more source

Reproductive Performance of Buffalo (Bubalus bubalis) in Small Scale Farm in Boyolali Regency Central Java

Jurnal Ilmu-Ilmu Peternakan, 2023
This study aimed to determine the reproductive performance of female buffalo in Boyolali Regency, Central Java, Indonesia. The sampling method used was the purposive sampling method.
Zahrotul Fitriani, Joko Riyanto, Ratih Dewanti, Muhammad Cahyadi, Ari Kusuma Wati, Wari Pawestri, Yuli Yanti   +6 more
doaj   +1 more source

The effect of Holstein-Friesian genotype and feeding system on selected performance parameters of dairy cows on grass-based systems of milk production in Ireland [PDF]

, 2006
End of project reportThe overall objective of this project was to assess, the effect of strain of Holstein-Friesian dairy cow, pasture-based feed system (FS) and their interaction on animal performance in terms of milk productivity and lactation profile,
Berry, Donagh, Buckley, James F., Dillon, Pat, Horan, Brendan, Linnane, M., McCarthy, S., Mee, John F, O’Connor, Paula M., Shalloo, Laurence   +8 more
core  

Individual movement modeling expands the power of migratory species observations: North Atlantic right whale case study

Limnology and Oceanography: Methods, EarlyView.
Abstract Understanding a population's distribution depends on observing the presence and movement of individuals throughout their range. For highly mobile marine species, these observations typically rely on high effort monitoring programs. Tracking enough individuals to understand trends in movement behavior is not always logistically feasible, and ...
Abigail M. Kreuser, Daniel E. Pendleton, Nicholas R. Record, Erin L. Meyer‐Gutbrod   +3 more
wiley   +1 more source

Analisis Faktor-faktor Yang Mempengaruhi Jarak Beranak (Calving Interval) Sapi Bali Di Kecamatan Bangkinang Kabupaten Kampar [PDF]

, 2007
To increase growth rate of population Bali cattle in the area can be done with efficient of calving interval markers with high calving rate. The aim of this research was to analyze factors which influencing calving interval of Bali Cows in Bangkinang ...
Adelina, T. (Triani), dan, H. (Hidayatid), Ridha, M. (Mawaddah)   +2 more
core  

Familiarity and aggression shape long‐term associations and mortality risk in a solitary ungulate

Oikos, EarlyView.
Periodic social interactions are important to animal fitness, even in solitary species. For solitary species, these interactions can be unexpected and shaped by previous encounters. Despite being aggressive and largely solitary, black rhinoceroses Diceros bicornis are commonly seen in groups, suggesting they may engage in more social behaviours than ...
Rachel M. Stein, Adrian M. Shrader
wiley   +1 more source

Milk progesterone as a tool to improve fertility in dairy cows [PDF]

, 2007
Milk progesterone offers an opportunity to objectively study fertility in dairy cows, in contrast to traditional measures of dairy cow fertility, which in general are highly influenced by on-farm management decisions.
Petersson, Karl-Johan
core  

Relationship between dairy cow genetic merit and profit on commercial spring calving dairy farms [PDF]

, 2011
peer-reviewedBecause not all animal factors influencing profitability can be included in total merit breeding indices for profitability, the association between animal total merit index and true profitability, taking cognisance of all factors associated
Berry, Donagh, Cromie, A. R., Horan, Brendan, Ramsbottom, George   +3 more
core   +1 more source

Comparison of performance and fitness traits in German Angler, Swedish Red and Swedish Polled with Holstein dairy cattle breeds under organic production [PDF]

, 2020
Although the use of local breeds is recommended by organic regulations, breed comparisons performed under organic production conditions with similar production intensities are scarce.
Bieber, A., Ivemeyer, S., Knierim, U., Leiber, F., Simantke, C., Spengler Neff, A., Wallenbeck, A.   +6 more
core   +1 more source

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

Remote Sensing in Ecology and Conservation, EarlyView.
Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann, Valdemar Palmqvist, Johanna Stedt   +2 more
wiley   +1 more source