Results 71 to 80 of about 311,062 (183)

Comportamiento reproductivo de ganado bovino lechero en clima tropical. 3. efecto de la temperatura y humedad relativa sobre el porcentaje de concepción en vacas holstein y suizo pardo

open access: yesRevista Mexicana de Ciencias Pecuarias, 1984
Con el objeto de conocer los efectos de la temperatura y humedad relativa mensual y de dos días D -2, D -1) antes hasta el dia octavo (D + 1. ..D + 8) después del servicio (Día O) sobre el porcentaje de concepción (PC), se analizaron los registros ...
José Juan Hernández Ledezma   +2 more
doaj  

Comportamiento productivo de vacas Holstein, suizo pardo y sus cruzas con cebu F1 en clima tropical

open access: yesRevista Mexicana de Ciencias Pecuarias, 1981
Se analizaron los registros de producción de leche de las vacas Holstein (H), Suizo Pardo (SP), Holstein x Cebú F1 (HC) y Suizo Pardo X Cebú Fl (SPC) del Centro Experimental Pecuario "La Posta" de Paso del Toro, Ver.
Carlos M. Becerril Pérez   +2 more
doaj  

Influence of inbreeding and crossbreeding on the in vitro embryo development during normal and heat stress condition [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2012
Inbreeding and Heat stress have negative effects on reproductive performance of dairy cattle. Two suggested strategies to overcome to these factors are to use crossbreeding and crossbreeding with thermo tolerant genotype, respectively.
doaj   +1 more source

A note on muscle composition and colour of Holstein-Friesian, Piedmontese × Holstein-Friesian and Romagnola × Holstein-Friesian steers. [PDF]

open access: yes, 2009
peer-reviewedHolstein-Friesian (HF), Piedmontese × Holstein-Friesian (PM) and Romagnola × Holstein-Friesian (RO) steers were compared for muscle composition and colour.
Allen, Paul, Keane, Michael G.
core  

Single polaron properties of the breathing-mode Hamiltonian

open access: yes, 2007
We investigate numerically various properties of the one-dimensional (1D) breathing-mode polaron. We use an extension of a variational scheme to compute the energies and wave-functions of the two lowest-energy eigenstates for any momentum, as well as a ...
Bayo Lau   +6 more
core   +1 more source

Functional renormalization group study of the Anderson--Holstein model

open access: yes, 2013
We present a comprehensive study of the spectral and transport properties in the Anderson--Holstein model both in and out of equilibrium using the functional renormalization group (FRG).
Jakobs, S. G.   +3 more
core   +1 more source

Identification of Important Variants of ATPase and Cytochrome b Coding Genes of the Mitochondrial Genome in Holstein and Cholistani Cows [PDF]

open access: yesپژوهشهای تولیدات دامی
Extended Abstract Background: Selection over the past years has caused commercially modified livestock to have less genetic resistance and adaptability compared to native livestock, which is the reason for the reduction of genetic diversity.
Ahmad Tamroosi   +3 more
doaj  

Diagnostic Imaging of Congenital Meningoencephalocele in a Holstein Calf

open access: yesJournal of Animal Reproduction and Biotechnology, 2017
A 10-day-old, Holstein calf with facial mass of 10 cm in diameter at the forehead region referred to Veterinary Medical Teaching Hospital in Chungnam National University. The mass was soft and fluctuating swelling.
Kyunghun Kwon   +5 more
doaj   +1 more source

The impact of pre-dry-off weather patterns on subsequent lactation udder health in dairy cows, and their comparison with milkability, milk quality and udder health parameters - A pilot study

open access: yesCzech Journal of Animal Science
Environmental conditions are known to influence the dairy cow health, with most research focusing on the detrimental effects of heat stress. However, the impact of non-summer weather patterns in temperate climates on udder health carry-over between ...
Matúš Gašparík   +6 more
doaj   +1 more source

Comparison of breed of dairy cow under grass-based spring milk production systems [PDF]

open access: yes, 2006
End of project reportThe objective of this study was to investigate the potential differences among different dairy cow breeds across two feeding systems on milk production, udder health, milking characteristics, body weight, body condition score ...
Buckley, Frank, Dillon, Pat, Walsh, S.W.
core  

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