17.3补充说明: 妊娠鉴定
Additional Comments: Pregnancy Test
通过每天的发情鉴定可以及时的发现返情母猪。30-50%的返情母猪在配种后的3周内被发现,其余的(50-70%)在其它时间被发现。因此,每天的发情鉴定很重要。
By implementing a daily heat check you detect RETURNERS in time. 30-50 % of the returners are detected 3 weeks after their mating day, the rest (50-70 %) are found in the interim period. Therefore, heat check is necessary every day.
发情迹象:
Oestrus signs are:
1. 母猪让其它母猪或公猪爬跨。
The sow let other sows and the boar mount her.
2. 母猪跟着工作人员走。
The sow follows the manager around the pen.
3. 母猪异常活跃。
The sow is hyperactive.
4. 母猪寻找公猪。
The sow seeks the boar.
5. 母猪出现在电子母猪饲喂器未吃料的清单上。
The sow may act on the remnant list of ESF.
6. 母猪的阴唇肿胀。
The sow has swollen labia.
7. 母猪发出“低吟”声。
The sow “buzz”
公猪可以帮助发现发情母猪,但是公猪不能发现所有的发情母猪。
The boar can be a help to find the oestrus sows, but the boar doesn’t discover all the oestrus sows.
1. 公猪和母猪有“一见钟情”的现象。
Both the sow and boar have preferences (“love at first sight”).
2. 年轻的和等级低的母猪发情症状不明显。
Young and low ranking sows do not dare to show oestrus.
公猪可以作为发现空怀母猪的快速工具,但具有不确定性。
The boar should be regarded as a tool to find empty sows quickly. The boar is not a certainty.
许多空怀母猪不是周期性的,因此,不能通过查情来发现,只能通过扫描来发现。
Many empty sows are not in cycle. Therefore, one can not find them by heat check. They can only be found by scanning.
扫描不一定要在配种第24天后进行,但如果扫描的太早,结果具有不确定性,因为此时较难在屏幕上观察到胚胎。如果扫描确认母猪空怀,要立刻将其转入配种舍。
Scanning can not with certainty be made from day 24 after mating. If the scan is done too early, the results is uncertain since the embryos are difficult to see on the scanner screen. If the sow scanned empty she is immediately moved to the mating unit.
如果对扫描结果有疑问,可以在母猪身上做明显的标记,记录下母猪的圈舍和号码。下一次扫描时应该能得到一个准确的结果。
If you have doubt about the outcome the sow is clearly marked and number and section is noted. At the next scan there should be achieved a safe outcome.
如果对母猪进行第二次扫描时,发现是空怀或仍不确定的,则将其转移到配种舍。
If the sow empty at the second scan, or you are unsure, the sow is moved to the mating unit.
对所有不能确定是否怀孕的母猪,要在一个星期内再次扫描。空怀母猪要立即转移到配种舍,这会让母猪的发情更加显著。
All sows where there is doubt about pregnancy, is scanned again within a week. Empty sows are immediately moved to the mating unit, which often triggers a more pronounced heat.
参见18 –扫描技术
See 18 – Scanning technique
扫描母猪的同时要评估其体况,如果需要,要及时调整饲喂曲线。
While scanning the sows are assessed on body condition and the feed curve is adjusted if necessary.
接种疫苗(妊娠第90天)时,可以评估母猪是否怀孕。如果有疑问,立即进行扫描。
By vaccination (day 90), it is estimated if the sows are pregnant. By doubt they are scanned.