What is a good birth weight for cattle?
What is a good birth weight for cattle?
REA (Ribeye Area): This EPD is derived from ultrasound measurements of live cattle at a year and adjusted to 365 days of age. The REA EPD is measured in square inches, reflecting the area of the ribeye. Cattle with a higher REA EPD are expected to produce progeny that have higher red meat yield at harvest time.
What does YW stand for in cattle?
YW: yearling weight – weight of a calf at one year of age; typically measured within a certain age window around 365 days of age and then adjusted back to 365 days of age.
How old is a yearling calf?
Yearling – A calf this is one year old.
How do you read EPD charts?
Graph 1 depicts the birth weight EPDs of two bulls as well as the number of progeny (at each given birth weight) each bull produced. The numbers on the graph represent the number of progeny at that particular birth weight. Bull A has a birth weight EPD of !
What does BW stand for in cattle?
Breeding Worth (BW) is the index that we use to rank cows and bulls according to their ability to meet this objective.
What does IMF stand for in cattle?
Intramuscular Fat (IMF) EBVs are estimates of genetic differences between animals in intramuscular fat (marbling) at the 12/13 rib site in a standard weight steer carcase.
What does EPDs stand for?
The Edinburgh Postnatal Depression Scale (EPDS) is a 10-item questionnaire that was developed to identify women who have postpartum depression. Items of the scale correspond to various clinical depression symptoms, such as guilt feeling, sleep disturbance, low energy, anhedonia, and suicidal ideation.
How do you pick a good bull?
Conformation and EPDs are the two best methods of selecting a good herd bull. Do not select a herd bull based on only one of these methods: you must use both in order to find what you want. Besides breed and genetic qualities, also select a bull based on his temperament.
What is a contemporary group?
A contemporary group is a set of animals that have had an equal opportunity to perform: same sex, managed alike, and exposed to the same environmental conditions and feed resources. Contemporary groups are the cornerstone of genetic evaluation.
What is BW in cattle?
How is calving ease calculated?
Calving Ease Direct (CED): Calving Ease Direct EPD is expressed as percentage of unassisted births, with a higher value indicating greater calving ease in first-calf heifers. It predicts the average difference in ease with which a sire's calves will be born when he is bred to first-calf heifers.
What is EPD certification?
An Environmental Product Declaration (EPD) is a transparent, objective report that communicates what a product is made of and how it impacts the environment across its entire life cycle. A verified EPD can earn your products credits for LEED v4 and other green building rating systems.
What does EPD stand for in construction?
Environmental Product Declarations (EPDs) can help you use sustainable building materials. and develop more energy efficient and environmentally responsible buildings.
What is hybrid vigor in cattle?
Heterosis, or hybrid vigor, is the performance advantage crossbreds wield over the average of their straightbred parents. Heterosis and complementarity are powerful forces that combine to produce the total advantage of beef cattle crossbreeding.
What does adjusted weaning weight mean?
Adjusted 2015 day weaning weight = ( weaning weight – birth weight. x 205 ) = birth weight + age of dam adjusted. weaning age. If the actual birth weight is not available, the appropriate standard birth weight designated by the respective breed association of the calf's sire may be used (see table below).
What is environmental product declaration and certification?
An Environmental Product Declaration (EPD) is an independently verified and registered document that communicates transparent and comparable information about the life-cycle environmental impact of products.