Beef Cattle Recording: Glossary of Terms

6. Glossary of Terms

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ABRI	Agricultural   Business Research Institute at University of New England (UNE) Armidale. Is   responsible for data processing and commercial operation of BREEDPLAN.
AGBU	Animal   Genetics and Breeding Unit at joint institute of NSW Agriculture and UNE. Is responsible for research, development and management of   BREEDPLAN
Age at first calving	Age of   the dam in days at first calving
Age at puberty	Time at   which the animal acquires the ability to reproduce offspring (first   spontaneous ovulation or ability to produce an ejaculate of 50 million   spermatozoa/ml)
Age of   heifer first oestrus	Age of   the heifer in days
Birth Weight	Weight   of calf within 48 hours after birth
Body Condition Score	Numerical   score to describe the nutritional body state of the animal
Bone %	Percent   ratio of bone weight and carcass weight
Breeding	Natural mating or artificial   insemination service (AI)
BREEDPLAN	The   Australian genetic evaluation system for Beef Cattle.
Calf Mortality	Mortality   of the new born calf during or within 48 h after birth
Carcass length	Carcass   length between fixed points
Cause of death	Choice   from a coded list of causes of death
Code of Practice	The   minimum requirements that have to be met in each case to achieve   accreditation
Conception	Formation   of a diploid zygote
Conception rate of bull	Number   of services or matings per (a) conception, (b) gestation or (c) calving when   the same (only one) bull is used to breed cows and to obtain a gestation
Conception rate of herd	Proportion   of cows mated to a bull or inseminated with a bulls semen which conceived or   become pregnant at a defined stage of gestation
Conformation score	Subjective   assessment of conformation in live animals or carcasses
CRC	Co-operative   Research Centre for the Cattle and Beef Industry (Meat Quality) with head   office based at UNE and the Tropical Beef Centre at Rockhampton Queensland
Disposal reason	Coded   list to describe the exit of an animal from the herd;
	1. Death on farm
	2. Sale for breeding
	3. Sale for finishing
	4. Slaughter
EBV	Estimated   Breeding Value. A measure of an animals genetic merit for a given trait
Embryo	The   conceptus arising from the zygote through mitotic divisions
Estimated weight	Linear   function of chest girth and age by breed
Fat score	Subjective   assessment of fat cover of carcass
Fecundity	Reproductive   potential of an animal as measured by the quantity and quality of gametes produced   or by the quantity of developing eggs or of fertile breeding
Fertility	Reproductive   potential of an animal as measured by the quantity and quality of gametes   produced or by the quantity of developing eggs or of fertile breeding
Fertilization	Formation   of a diploid zygote
First successful
semen collection	Date of   first successful collection
Foetus	The   young organism after completion of organogenesis, when implantation of the   conceptus is completed
Herd   female Non-return rate	Proportion   of cows inseminated for the first time during a given period of time, (such   as a month), that have not been recorded as having returned for another   service within a specified number of days, and so are presumed pregnant
Hot carcass weight	Weight   of carcass after bleeding and removal of head, legs, skin, visceral organs
Implantation	Process   of attachment of the conceptus in the uterus, begins at day 19-20 and is   completed between days 35 and 42
Infertility	Any   complete or partial (semi sterility) failure of an individual to produce   functional gametes or viable zygotes
Kidney fat %	Percent   ratio of kidney fat weight and carcass weight
Linear score	A   numeric score recorded on one or more anatomical sites on the animal using a   numeric scale designed to describe the biological variation
Live empty/shrunk weight	Live   weight following 12 hours of food and water withdrawal
Live full weight	Average   of two consecutive live weights where animal has access to food and water   recorded 24 hours apart
Mating date	Date of actual mating
NFE	Net   Feed Efficiency. Refers to the difference in animals feed intake independent   of requirements for growth rate and body weight
NFI	Net   Feed Intake. The trait calculated by phenotypic adjustment of feed intake for   body weight and growth as a measure of NFE
Oocytes produced	No. of   oocytes per flush
Pastural natural mating dates	Start   and end dates of exposure to sire(s)
PBBA	Performance   Beef Breeders Association. A technical committee representing each of the   Breed Societies that conduct annual GROUP BREEDPLAN analyses
Pelvic Diameter	Vertical   and or horizontal pelvic diameter
Prolificacy of female	Number   of calves per gestation
Reproductive lifetime	A   function of age at puberty and stayability
Scrotal Circumference	The   largest circumference of the scrotum recorded with both testicles positioned   beside each other
Serving capacity	Number   of services achieved by a bull under stipulated/defined conditions
Sterility	Any   complete or partial (semi sterility) failure of an individual to produce   functional gametes or viable zygotes
Weaning Weight	Weight   of calf at weaning