Pig Do liquid-fed pigs require extra water?
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Do liquid-fed pigs require extra water?

Author Ioannis Mavromichalis, Ph.D, publish date Friday. April 5th, 2019

Do liquid-fed pigs require extra water?

Theories suggest that offering pigs liquid feed eliminates the need for supplemental fresh water. Is this true?

It is often suggested that liquid feeding eliminates the need for supplemental fresh water. In theory, pigs do not require a separate source of water given that their true requirements for water are satisfied through the daily allotment of liquid feed. Yet, there is a number of unpredictable circumstances under which lack of fresh water may be detrimental to animal health and performance. The following are but a few of such circumstances.

  • One of the main advantages of liquid feeding is the ability to use relatively large quantities of inexpensive agro-industrial by-products. Yet, these by-products tend to be rather variable in composition that may change from batch to batch even within the same processing plant. If these by-products are naturally high in sodium chloride or potassium (e.g., whey or molasses), a slight, yet undetected, change in production process or dry matter concentration of the by-product can lead in dramatic changes in dietary composition. Under these unpredictable circumstances pigs may receive a diet that fluctuates widely in nutrient composition including minerals that could lead to “salt poisoning” from water deprivation.
  • The assumption that liquid-fed pigs acquire enough water through their daily allotment of soup is based on the traditional 3:1 water ratio (25 percent dry matter) used to prepare liquid feed. But with modern delivery systems, it is possible now to effectively pump a more dense soup that has as much as 33 percent dry matter (2:1 ratio).
  • It is finally recommended to offer liquid-fed pigs a supply of fresh water when daily water requirements are expected to fluctuate widely due to environmental changes, insufficient feed intake from excessive competition or under the stress of disease, during which period pigs tend to decrease feed intake and increase water intake.
  • During the first couple days post-weaning, or when pigs are switched from dry to liquid feeding, pigs may refuse to consume sufficient quantities of liquid feed to sustain their body weight. Instead, they prefer to drink enough fresh water in an attempt to provide sufficient gut fill for satiety. It is, hence, advised to provide access to fresh water only after feed intake has reached satisfactory levels or limit it to a short period between meals. Caution should be taken to ensure that the liquid feed is properly formulated to avoid “salt poisoning” or that feed formulation does not create palatability problems.

In brief, pigs do require access to supplemental fresh water when fed liquid diets, if only to ensure water intake under special circumstances.


Sản phẩm khuyên dùng
Máy quạt nước 2Lúa 3N sử dụng công suất Motor từ 250W – 750W, từ 10 – 20 cánh, chiều dài 2 – 12m. Cốt lõi của Máy quạt nước 2Lúa 3N là Nhẹ điện - Nhẹ ký -Nhẹ phí.
Sản phẩm khuyên dùng
Khuếch tán khí Fi được thiết kế đặc biệt, hai đường Ống Nano-Tube song song và thông nhau, áp suất tạo ra đủ lớn dẫn đến bong bong khí, đồng đều trên khắp mặt ống.
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