Term
|
Definition
| Total energy in feed. No account for fecal energy loss. |
|
|
Term
|
Definition
| Total amount of feed digested. Takes in account of fecal energy. No account for gas/urine energy loss. |
|
|
Term
|
Definition
| Total intake/outtake in gas, fecal and urine products. No account for heat loss. |
|
|
Term
|
Definition
| Total heat loss from metabolic processes. Most accurate but hardest to measure. |
|
|
Term
|
Definition
| Net energy for maintenance |
|
|
Term
|
Definition
| Net energy for production |
|
|
Term
|
Definition
| Used to estimate chemical bonds in feed.(think energy chart) |
|
|
Term
| Direct and indirect calorimetry |
|
Definition
| Measures energy retention. Animal is put in a chamber where vitals such as heat, and gas exchange are measured via computer. |
|
|
Term
| Comparative Slaughter Techniques |
|
Definition
| Measures energy from animal carcass in bomb calorimeter. More accurate but expensive (animal sacrifice, one attempt, time consuming) |
|
|
Term
|
Definition
| Commonly used by farms, easy to use. Compares the differences in energy quantity of forages and concentrates. Useless in ruminants due to not taking account in gas/heat loss. |
|
|
