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Policy of selecting bulls to breed bulls

Animal Science, 1987
ABSTRACTIn the breeding of dairy cattle the selection of bulls to breed young bulls for progeny testing is a crucial process. This paper compares several policies for making this selection based on the criteria-selection response, inbreeding depression, loss of genetic variance and variability of response.
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‘Aging bull’

Medical Hypotheses, 1996
An old bull, it is said by those who know, can have his troubles. Included among these are vertebral osteosclerosis and ankylosing spondylosis; this stiffening up limits, rather than accentuates, the value and reproductive potential of a stud bull past his prime.
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Bull And Vine

2020
This thesis is a creative work and accompanying theoretical chapter. The creative work explores the development of affect through a nonlinear trajectory, with a plot featuring various characters with different relationships to the aesthetic. This work is written in dialect and features spatial and temporal jumps meant to juxtapose, for examination, the
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A load of bull

Nursing Standard, 1989
It was with slightly raised eyebrows that we read Today's report about a health authority employing Spanish nurses to beat the UK skills shortage.
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POSTHITIS IN BULLS

Australian Veterinary Journal, 1972
Clark Bl, Parsonson Im
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Brucellosis in bulls

Veterinary Record, 1973
WJ McCaughey, DA Purcell
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Thermoregulatory responses and reproductive traits in composite beef bulls raised in a tropical climate

International journal of biometeorology, 2018
N. Romanello   +11 more
semanticscholar   +1 more source

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