Results 131 to 140 of about 46,786 (294)

Delineating seasonal shifts in reindeer habitat and diet selection by integrating GPS telemetry and stable isotope analysis

Wildlife Biology, EarlyView.
Seasonal changes shape herbivore behaviour by altering forage availability and habitat conditions; however, few studies integrate diet and habitat selection data across temporal scales. This study uses seasonality as a unifying framework to combine fine‐scale GPS‐based habitat selection data with broader‐scale dietary information from stable isotope ...
Tamara A. Hiltunen, Sami M. Kivelä, Jouko Kumpula, Jouni O. Aspi, Jeffrey M. Welker   +4 more
wiley   +1 more source

Evaluation and optimal utilisation of the international linear type classification schemes [PDF]

, 2007
End of project reportThe authors would like to acknowledge the Irish Cattle Breeding Federation for access to their excellent database for use in this study and to the Irish Holstein-Friesian Association for financial support of this studyThe main ...
Berry, Donagh
core  

Parturition timing and the pre‐ and post‐partum behaviour of female moose assessed using animal‐borne video and movement‐based approaches

Wildlife Biology, EarlyView.
Limited information on moose calving behaviour, including parturition timing, cow‐calf interactions, and pre‐ and post‐partum movement patterns hinder our ability to define calving phenology and habitat use. GPS‐collars were deployed on 89 female moose over five years, including eight collars equipped with animal‐borne video and environmental data ...
Mikaela Borgeaud LeBlanc, Manuelle Landry‐Cuerrier, Vincent Brodeur, Murray M. Humphries   +3 more
wiley   +1 more source

Milk production and survival of spring-calving carryover cows in New Zealand dairy herds : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Animal Science at Massey University, Manawatu, New Zealand [PDF]

, 2017
Non-pregnant cows are generally culled from dairy herds and replaced with two-year-old heifers. Alternatively, non-pregnant cows can be dried-off at the end of lactation, retained for one year (carried over), before being mated and returned to a milking ...
Gardner, Rachel
core  

Juvenile predation overwhelms nutritional effects on female ungulate fat reserves in a high‐predation system

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ungulate body fat reserves reflect the nutritional environment, often serving as a useful indicator of bottom‐up resource availability. However, body fat reserves also integrate energetic costs associated with avoiding predation risk and reproductive effort, and it is ...
Nicole P. Bealer, Mark Hebblewhite, Sara H. Williams, Jodi E. Berg, Hans W. Martin, Evelyn H. Merrill   +5 more
wiley   +1 more source

Unknown parent groups and truncated pedigree in single-step genomic evaluations of Murrah buffaloes

Journal of Dairy Science
: Missing pedigrees may produce bias in genomic evaluations. Thus, strategies to deal with this problem have been proposed as using unknown parent groups (UPG) or truncated pedigrees.
T.P. Melo, A.K. Zwirtes, A.A. Silva, S.F. Lázaro, H.R. Oliveira, K.R. Silveira, J.C.G. Santos, W.B.F. Andrade, S. Kluska, L.A. Evangelho, H.N. Oliveira, H. Tonhati   +11 more
doaj   +1 more source

Genetic and genomic evaluation of age at first calving in Italian Holsteins

Journal of Dairy Science
Age at first calving (AFC) represents the nonproductive period of ∼2 yr in Holstein cows, and thus, it has a relevant effect on the cost of rearing replacements in the dairy herd. In the present study, we aimed to evaluate genetic and genomic aspects of AFC in the Italian Holstein population.
V. Ferrari, F. Galluzzo, J. B. C. H.M. van Kaam, M. Penasa, M. Marusi, R. Finocchiaro, G. Visentin, M. Cassandro   +7 more
openaire   +4 more sources

Modeling Skin Mark Temporal Variations to Estimate the Sex of Delphinids with Low Sexual Dimorphism: Implications for Management and Conservation

Integrative Zoology, EarlyView.
This work aimed to apply the principles of skin mark analysis to a cetacean species to build a sex‐discrimination model exclusively based on photographic material. Relevant differences between sexes emerged in markings, with males presenting more social, aggression‐related, and fishing‐related marks overall, and a stronger tendency of mark accumulation
Alice Turchi, Giulia Pedrazzi, Alex Mattiussi, Maria S. Labriola, Daniele Petrone, Sofia Rinalduzzi, Giancarlo Giacomini, Daniela Silvia Pace   +7 more
wiley   +1 more source

The Association between Charolais Cows' Age at First Calving, Parity, Breeding Seasonality, and Calf Growing Performance. [PDF]

Animals (Basel), 2023
Šlyžienė B, Mečionytė I, Žilaitis V, Butkienė E, Anskienė L, Šlyžius E, Palubinskas G.   +6 more
europepmc   +1 more source

Heritability of reproduetive traits in Asturiana de los Valles beef cattle breed [PDF]

, 2011
Heritability was estimated for four reproduetive traits in the Asturiana de los Valles breed in order to evaluate the possibility of include this information in the breed's current improvement program.
Goyache, Félix, Gutiérrez, J.P. (Juan)
core