問題:光照的影響

geyachen

各階段豬隻接受光照的長短
對生長是否有所影響
若畜舍自然光照不足
要以那種光源補充為佳

母豬發情狀況是否易受光照長短的影響



瞭解的諸位先進
麻煩幫助解惑囉

douglas_weng

最近因為工作需要有查閱一些關於光照的paper

節錄並翻譯其中一部分重點如下:
~~豬隻建議之光照強度與時間~~
不同階段的豬隻需要不同強度與時間的光照。如表三，為畜舍建議之光照強度與時間。對於照顧與處理家畜-豬隻的建議實施標準，每日最少要8小時光照，才足夠用來觀察豬隻。豬隻需要5 fc (50流明)的照明強度，這至少是一般老式豬舍的兩倍以上。光照設計的重點為是將光照效能最大化與涵蓋最少的欄位區域。

為了快速引起與延續母豬發情，種豬與懷孕母豬舍需要的光照時間為每日14-16小時。

保育豬，尤其是實施早期離乳的，需要24小時的強光照與弱光照來進行日常餵食與巡視等工作。

當沒有使用保溫燈時，分娩舍也需要24小時的光照，但夜間時可使用較弱的光照。

Table 3. Recommended Light Levels and Photoperiods for Swine Housing
畜舍        　　　光照強度 (fc) lux        　　光照時間 (h/d)        　　備註
種豬舍/女豬舍       　>10         　　　　　　14-16         　　　　為正常發情所必須
懷孕母豬舍        　　>5         　　　　  　　14-16         　　　　使未配上母豬順利重發情
分娩舍        　　　　5-10 　　　　　  　        8         　　　　如果沒有使用保溫燈，需要24小時的部分光照
保育豬        　　　　5        　　　　　     　　8         　　　　24小時的部分光照
生長豬-肥育豬       　5         　　　　   　　　8         　　　　每日最少6小時不中斷的光照時間

[ 本帖最後由 douglas_weng 於 2008-9-26 12:09 編輯 ]

pighead

請問原來文章所提供的這張表中的光照時間 8 hr/day是當分娩舍、
保育舍、生長肥育舍為密閉式的嗎？
如果是開放式豬舍或半開放式豬舍，會不會有所不同了？

douglas_weng

該文章是討論密閉式豬舍中，所需要的最低光照。

如果是開放式或半開放式，可能只需要在光照不足時補足就可以了。:100

不過可能還要查閱相關文獻~

mandolin

離乳後母豬在待配期間..晚上有需要加強光照嗎?(在母豬頭上方加裝日光燈)
曾聽過待配母豬在晚上期間持續光照有助於發情..
各位大大認為呢?

耿泥

可以請2樓的大大可以麻煩把那份PAPER     
PO一下來源!!

douglas_weng

http://www.omafra.gov.on.ca/english/engineer/facts/06-011.htm

不過這篇作者是做光照設備的....

我會再查一些有關繁殖的文獻，再提供給各位前輩參考

douglas_weng

再來一篇，不好意思這次沒時間翻成中文

實驗結果顯示在12:12  光照與黑暗下，不同強度的照明(40, 200 or 10,000 lx)並不會對褪黑激素的分泌產生顯著的影響。

Abstract
This study investigated the effects of the photophase light intensity on the scotophase melatonin
response. Twelve, 8-month-old crossbred gilts were allocated to three groups of four and housed
in temperature- and lighting-controlled climate rooms. The rooms had a light intensity of 40, 200
or 10,000 lx and a light–dark cycle of 12 L:12 D. The gilts were allowed to acclimatize to a new
lighting regimen for 1 week before being sampled at 2 h intervals for 24 h. Following the sampling,
pigs were transferred under a different light intensity, allowed to adjust for 1 week and sampled
again. The procedure was repeated three times so that all the groups went through all three lighting regimens (light intensities). All the gilts exhibited a clear circadian serum melatonin rhythm under each lighting regimen with high melatonin concentrations occurring during the scotophase. There was no difference in the scotophase melatonin response in terms ofmean concentrations or duration
of increased melatonin levels within or between the groups under different lighting regimens. There
was considerable inter-individual variation in the dark phase melatonin response but the individual
profiles were consistent under the different lighting regimens. It is concluded that when a certain threshold light intensity (<40 lx) is exceeded, the photophase light intensity has no effect on the
scotophase melatonin response. These results imply that extremely high light intensities during the
photophase would provide no additional benefits compared with normal comfortable light intensity,
if artificial lighting programs were introduced to commercial piggeries in order to reduce seasonal
effects on reproduction.

by
The photophase light intensity does not affect the scotophase melatonin response in the domestic pig. 2001. Animal Reproduction Science 65:  283–290

耿泥

讚ㄛ!!多PO一點!!
感謝!!PO原文!!

pighead

Abstract 摘要
This study investigated the effects of the photophase light intensity on the scotophase melatonin
response. Twelve, 8-month-old crossbred gilts were allocated to three groups of four and housed
in temperature- and lighting-controlled climate rooms. The rooms had a light intensity of 40, 200
or 10,000 lx and a light–dark cycle of 12 L:12 D.
這個研究為要調查光照階段中光線強度對夜間產生褪黑激素的影響。12頭八個月大的雜交女豬
每四隻分配成三組，安置於溫度與光照均被控制的氣候室中，室內的光照強度為40, 200, 或
10,000流明，而起光暗周期為12小時光：12小時暗。
The gilts were allowed to acclimatize to a newlighting regimen for 1 week before being sampled
at 2 h intervals for 24 h. Following the sampling, pigs were transferred under a different light
intensity, allowed to adjust for 1 week and sampled again. The procedure was repeated three
times so that all the groups went through all three lighting regimens (light intensities).
這些女豬先經過一週新的光照方式之適應調整，再經過24小時中每兩小時一次的採樣，接下來
豬隻則轉移到另一種光照強度的畜舍，一樣需要經過一週的適應調整，並且相同的採樣方式。
此一程序會重複三次，讓所有的組別都接受這三種不同的光照方式。
All the gilts exhibited a clear circadian serum melatonin rhythm under each lighting regimen with
high melatonin concentrations occurring during the scotophase. There was no difference in the
scotophase melatonin response in terms ofmean concentrations or duration of increased
melatonin levels within or between the groups under different lighting regimens.
不同組別的女豬在任一種光照模式下，都會出現明顯的血清褪黑激素的生理時鐘變化模式----
高濃度的褪黑激素是出現在夜間階段，但是在不同的光照模式組別之間或該組內夜間產生之平
均褪黑激素濃度卻沒有差異。
There
was considerable inter-individual variation in the dark phase melatonin response but the
individual profiles were consistent under the different lighting regimens. It is concluded that when
a certain threshold light intensity (<40 lx) is exceeded, the photophase light intensity has no effect
on the scotophase melatonin response. These results imply that extremely high light intensities
during the photophase would provide no additional benefits compared with normal comfortable
light intensity, if artificial lighting programs were introduced to commercial piggeries in order to
reduce seasonal effects on reproduction.

[ 本帖最後由 pighead 於 2008-10-2 21:40 編輯 ]