Results 71 to 80 of about 8,538 (245)

A combination of nutrition and genetics is able to reduce age at puberty in Nelore heifers to below 18 months

Animal, 2018
Nelore heifers usually begin their reproductive life at ⩾24 months of age mainly due to suboptimal nutritional conditions and genetics. This study aimed to determine the effect of expected progeny difference (EPD) for age at first calving and average ...
M.V.C. Ferraz, Jr, A.V. Pires, M.H. Santos, R.G. Silva, G.B. Oliveira, D.M. Polizel, M.V. Biehl, R. Sartori, G.P. Nogueira   +8 more
doaj   +1 more source

Genetic analysis of reproductive performance of Frieswal cattle at Military Farm, Ambala [PDF]

Veterinary World, 2015
Aim: This study was carried out to investigate the genetic analysis of reproductive performance of Frieswal cattle at Military Farm, Ambala. Materials and Methods: A total number of 3005 lactation records of 1147 Frieswal cows over a period of 15 years ...
Jagdeep Kumar, Y. P. Singh, Sushil Kumar, Rajbir Singh, Ravinder Kumar , Pradeep Kumar   +5 more
doaj   +1 more source

A recipe for recovery: diet as a decisive tool in species conservation

Oikos, EarlyView.
Animals consume foods in specific quantities and ratios to meet a multi‐dimensional nutrient target that maximizes their fitness. Attempts to reach this target in an ever‐changing nutritional landscape often influence animal foraging behavior, habitat choice, and food‐web interactions. Consequently, understanding the nutritional ecology of a species is
Noa Lavie, Yael Levinson, Jessica M. Rothman, Dror Hawlena   +3 more
wiley   +1 more source

Clinical interpretation of cardiac troponin in athletes: From endurance exercise to exertional injury

PM&R, EarlyView.
Abstract Exertional heat illness (EHI) and exertional rhabdomyolysis (ER) are increasingly recognized causes of morbidity in competitive and tactical athletes. Cardiac troponin (cTn) elevation, traditionally viewed as a marker of myocardial necrosis, may also be seen in these settings and can create significant diagnostic and prognostic uncertainty ...
John‐Henry L. Dean, Jeffrey C. Leggit, M. Alaric Franzos   +2 more
wiley   +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

Factors Affecting Age at First Calving in Kankrej Cattle

Journal of Animal Research, 2016
The data of 35 years from 1980 to 2014 were analyzed to study the effect of genetic and non-genetic factors viz. period of calving, season of calving as fixed effect and sire as random effect on the reproduction trait (age at first calving) of Kankrej cattle maintained at Livestock Research Station, S.D.
N.K. Pareek, K.J. Ankuya, M.P. Patel, N.A. Joshi, B.S. Rathod, K.B. Prajapati, J.B. Patel   +6 more
openaire   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

Assessing veterinary students’ attitudes towards pain in cattle before and after final‐year clinical training

Veterinary Record, EarlyView.
Abstract Background Cattle only show subtle signs of pain, making pain assessment difficult. The approach to pain and the use of analgesics depend on the treating person's experience and opinions. Methods Bavarian veterinary students were asked to answer two identical questionnaires before and after 12 weeks of clinical training in a ruminant clinic. A
Theresa Tschoner, Kristina R. Mueller, Yury Zablotski, Melanie Feist   +3 more
wiley   +1 more source

Temporal and seasonal trends of bovine tuberculosis in the Irish cattle population (2008–2024)

Veterinary Record, EarlyView.
Abstract Background Bovine tuberculosis (bTB) has substantial impacts on the Irish cattle industry. Between 2016 and 2024, its burden increased in Irish cattle. As an initial step towards understanding drivers of this increase, we explore long‐term trends in measures of bTB burden and cattle demographics in Ireland. Methods Using data from 2008 to 2024,
Jamie M. Madden, Eamonn Gormley, Philip Breslin, Damien Barrett, Jonas Brock, Jamie A. Tratalos, John Griffin, Mike Horan, Miriam Casey‐Bryars   +8 more
wiley   +1 more source

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