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While Lamb's analysis assumed a straight wavefront, it has been shown [8] that the same characteristic equations apply to cylindrical plate waves (i.e. waves propagating outwards from a line source, the line lying perpendicular to the plate). The difference is that whereas the "carrier" for the straight wavefront is a sinusoid, the "carrier ...
A cross-bred ewe suckles her lamb, which was the first of the 2008 spring lambing at a farm in Coventry, England Domesticated sheep are herd animals that are bred for agricultural trade. A flock of sheep is mated by a single ram , which has either been chosen by a farmer or, in feral populations, has established dominance through physical ...
Poddy lamb, bottle lamb or pet lamb – an orphan lamb reared on a bottle. Also cade lamb, or placer. Rubbed wool indicating the presence of external parasites on sheep. Pour-on – see backliner. Raddle – coloured pigment used to mark sheep for various reasons, such as to show ownership, or to show which lambs belong to which ewe. May be ...
In asexual reproduction, a propagule is often a stem cutting. In some plants, a leaf section or a portion of root can be used. In sexual reproduction, a propagule is a seed or spore. In micropropagation, a type of asexual reproduction, any part of the plant may be used, though it is usually a highly meristematic part such as root and stem ends ...
These rumbles calm and quiet the lamb, and serve as an auditory signature as the lamb ages, a cue by which lambs can identify their own mothers. [4] Olfaction plays a role in responsiveness, as most non-maternal animals find the smell of infants and amniotic fluid repellant, while in maternal animals, those with the hormone profiles which occur ...
Taking the divergence of seismic wave equation in homogeneous media, instead of the curl, yields a wave equation describing propagation of the quantity , which is the material's compression strain. The solutions of this equation, the P waves, travel at the faster speed α = ( λ + 2 μ ) / ρ {\textstyle \alpha ={\sqrt {(\lambda +2\mu )/\rho }}} .
The etymology of the term "freemartin" is uncertain: speculations include that "free" may indicate "willing" (referring to the freemartin's willingness to work) or "exempt from reproduction" (referring to its sterility, or to a farmer's decision to not bother trying to breed a freemartin, or both), or that it may be derived from a Flemish word for a cow which gives no milk and/or has ceased to ...
The mode of reproduction of a crop determines its genetic composition, which, in turn, is the deciding factor to develop suitable breeding and selection methods. Knowledge of mode of reproduction is also essential for its artificial manipulation to breed improved types.