- Volume 29 Issue 2
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The Physiological Suppressing Factors of Dry Forage Intake and the Cause of Water Intake Following Dry Forage Feeding in Goats - A Review
- Sunagawa, Katsunori (Faculty of Agriculture, University of the Ryukyus) ;
- Nagamine, Itsuki (Faculty of Agriculture, University of the Ryukyus)
- Received : 2015.08.17
- Accepted : 2015.10.17
- Published : 2016.02.01
The goats raised in the barn are usually fed on fresh grass. As dry forage can be stored for long periods in large amounts, dry forage feeding makes it possible to feed large numbers of goats in barns. This review explains the physiological factors involved in suppressing dry forage intake and the cause of drinking following dry forage feeding. Ruminants consume an enormous amount of dry forage in a short time. Eating rates of dry forage rapidly decreased in the first 40 min of feeding and subsequently declined gradually to low states in the remaining time of the feeding period. Saliva in large-type goats is secreted in large volume during the first hour after the commencement of dry forage feeding. It was elucidated that the marked suppression of dry forage intake during the first hour was caused by a feeding-induced hypovolemia and the loss of
Physiological Controlling Factors;Excessive Salivation;Plasma Osmolality;Dry Forage Intake;Water Intake;Goats
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