click below
click below
Normal Size Small Size show me how
Sheep Production
Revision for Ch. 28 and 29
| Term | Definition |
|---|---|
| Flushing | process of moving ewes from a low plane of nutrition to a high plane of nutrition before mating. |
| Steaming Up | practice of increasing the amount of concentrates being fed to ewes in late gestation in order to prevent twin lamb disease. Ensures healthy lambs and milk production. |
| Botanical Composition | variety of plant species |
| Prolificacy | the ability of ewes to produce a large litter size |
| Maternal Sire | ram used to produce daughters with excellent mothering abilities and good reproduction. |
| Terminal Sire | ram used to produce lambs with fast growth rates and good carcass quality |
| Cast or Draft Ewe | mountain ewe whose fertility declined and is sold to a lowland farmer who put the ewe on a high plane of nutrition to improve her fertility. |
| Hybrid Vigour | increased productivity in offspring as a result of crossing two genetically different parents. |
| Seasonally polyoestrous | ewes have many oestrous cycles during a certain time of year. |
| Sponging | progesterone impregnated sponges inserted into ewes vagina for 12 days to synchronise the oestrous cycle. |
| Fostering | ewes mother a lamb that is not her own. |
| Pheromone | Chemical produced by males to attract females for breeding. Brings about the onset of heat. |