Results 51 to 60 of about 2,018,275 (336)

Genetic Relationship of Body Energy and Blood Metabolites with Reproduction in Holstein Cows [PDF]

, 2008
Body condition score (BCS), energy content (EC), cumulative effective energy balance (CEEB), and blood serum concentrations of glucose, beta-hydroxybutyrate (BHBA), and nonesterified fatty acids ( NEFA) were measured throughout first lactation in 497 ...
A. Tsiaras, Banos, Banos, Berry, Brotherstone, Bruss, Butler, Clark, D. Zygoyiannis, de Vries, Dechow, Edmonson, Ferguson, Fox, G. Arsenos, G. Banos, G. Oikonomou, G.E. Valergakis, Gilmour, Hayhurst, Herdt, Holtenius, Lucy, Markusfeld, Moallem, Patton, Pryce, Pryce, Pryce, Rabiee, Reist, Reist, Stevenson, Suriyasathaporn, Veerkamp, Veerkamp, Wall, Walsh, Wathes, Westwood, Whitaker   +40 more
core   +1 more source

Estimation of Genetic Parameters for 305 Days Milk Yields and Calving Interval in Xinjiang Brown Cattle

, 2017
This study was conducted to estimate variance components and genetic parameters for 305 days mature equivalent milk yields (MEM) and calving interval (CAI) of registered Xinjiang Brown cattle.
Fu Xuefeng, Lu Lili, Xixia Huang, Yachun Wang, Tian Kechuan, Xu Xinming, J. Fang, Cheng Liming, Zhiqin Guo, Tian Yuezhen   +9 more
semanticscholar   +1 more source

Freeze‐dried Lactobacillus spp. improved average daily liveweight gain and reduced methane intensity in growing lambs

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Direct fed microbials (DFM) are natural and safe enteric methane mitigants for ruminant livestock systems. While previous studies have demonstrated the effect of Lactobacillus spp. on methane mitigation, challenges remain in effectively delivering DFM in extensive grazing systems. The objective of this experiment was to evaluate the
Sreemol Suthan Nair, Stephanie K Muir, S Richard O Williams, Aodán S ó Neachtain, Subhash Chandra, Pablo S Alvarez‐Hess, Long Cheng, Joe L Jacobs   +7 more
wiley   +1 more source

Genetic evaluation of fertility using direct and correlated traits [PDF]

, 2003
Poor fertility has become a major reason for involuntary culling of dairy cows in the United Kingdom. Calving interval (CI) and body condition score (BCS) are recorded, heritable, genetically correlated with each other, and could be used to extend the ...
Berry, Brotherstone, Brotherstone, Calo, Coffey, Collard, Dechow, Dematawewa, E. Wall, Evans, G. Banos, Groen, Groeneveld, Harrison, Hickman, J.A. Woolliams, Jones, Kadarmideen, M.P. Coffey, Mrode, Neumaier, Olori, Pryce, Pryce, Pryce, Pryce, Roman, Roxström, Roxström, Royal, Royal, S. Brotherstone, Veerkamp, Veerkamp   +33 more
core   +1 more source

Addressing biases in sliding window analysis gives new insight into the response of parturition date to weather in a wild mammal

Oikos, EarlyView.
Animal breeding phenology in temperate and high latitude regions is often predicted by weather variables, such as temperature. Much work on this topic has focused on taxonomic groups that employ adaptive plastic responses to annual variation in an environmental cue, with analytical approaches developed to determine when weather has an effect and the ...
Kirsty H. Macphie, Sean Morris, Alison Morris, Fiona E. Guinness, Timothy H. Clutton‐Brock, Loeske E. B. Kruuk, Josephine M. Pemberton   +6 more
wiley   +1 more source

PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF HOLSTEIN-FRIESIAN COWS IN PAKISTAN [PDF]

Pakistan Veterinary Journal, 2005
Productive and reproductive performance parameters of Holstein-Friesian cows kept at the Livestock Experiment Station, Bhunikey (Pattoki), District Kasur for the period from 1991 to 2000 were studied.
A. Sattar, R. H. Mirza, A. A. K. Niazi and M. Latif
doaj  

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  

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

Associations between milk production level, calving interval length, lactation curve parameters and economic results in Holstein cows

Mljekarstvo, 2015
The objective of work was to evaluate effects of milk production level (MY1≥9500 kg, n=23; MY2 = 8000-9499, n=28; and MY3≤7999 kg, n=29) and calving interval length (CI1≥440 days, n=22; CI2 = 400-439 days, n=33; and CI3≤399 days, n=25) on the lactation ...
D. Němečková, L. Stádník, J. Čítek   +2 more
semanticscholar   +1 more source

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li, Ranran Wang, Fuyang Tian, Yudao Li, Zhuolin Wang, Yuxin Yu, Liping Ma, Xin Lu   +7 more
wiley   +1 more source