We asked the EXPERT: Should pigs be fed WHEY?

Aleksandar Drljačić, a veterinarian and pig health care specialist, talked to us about the positive and negative characteristics of the use of whey in pig nutrition, what to pay attention to when feeding pigs whey and in what form this dairy by-product is used in their meals.

Photo: Agromedia

Whey powder is used for piglets up to 25 kg

As he says, intensive pork production has contributed rising production costs. Creation of new hybrids, lines with a high share percentage of meat, with the increased number of live pollinated piglets, climate change has affected their health and reproductive status and thus production costs.

In order to reduce these costs, they are required alternative and cheaper nutrients. These are most often products and by-products of the food industry. One of them is also whey.

“Whey can be sour or sweet. Sweet whey, when given to piglets it achieves better production results compared to sour. The high nutritional value of whey is reflected in the thanks high content of essential amino acids, and its biological value from the composition of proteins “, said the interlocutor of our portal.

According to him, in the diet of piglets up to 25 pounds whey powder is used as an ingredient part of a concentrated meal, and for larger categories in liquid state. It has been proven that piglets, which receive whey in their diet, have it better growth and health. That is primarily thanks to lactose, and not whey proteins.

Whey also has prebiotic role. Giving whey breeding sows proved to be good because it leads to better reproductive results.

“The profitability of the production of other categories of pigs requires a liquid diet, self-administration or mixed with other parts of the meal,” said Drljacic.

When eating liquid whey, pay attention to the transport and temperature of the whey

As he says, feeding pigs with liquid whey is required prudence for several reasons. The means of transport for whey from the production facility to the farm should be clean, disinfected and constructed of a material that will not cause changes in its composition. When giving liquid whey to pigs, it should be fresh, not older than 24 hours. It must be respected temperature regime transport.

PrasadPhoto: Agromedia

“The tank in which the whey is received should be made of a material that will not cause changes in the composition of the whey and under the temperature regime. At high ambient temperatures it is prone spoilage, and at low freezing. To fully meet the needs of pigs, whey must be warmed before feeding body temperature animals and only then can I consume it “, explained this graduate veterinarian.

If the whey temperature is lower than the body temperature, the animals use their own energy to heat it, which leads to reduction in daily gain.

He added that if the proper washing and disinfection of the power supply system is not performed whey residue which is subject to rapid spoilage, in the next feeding they are introduced into the organism of animals and lead to indigestion food, disease and death of animals. In most pig fattening facilities, this is a problem sediment disposal and the solid part of the manure, and the use of whey complicates the problem.

Whey must be introduced gradually and not interrupted until the end of fattening

“Pigs, like mammals, drink the milk they have in the beginning of their life lactose. In order for milk to be digested, it is needed enzyme β-galactosidase. As the animals age, milk intake decreases and thus the presence of the enzyme β-galactosidase. Animals begin to eat plant foods, the level of enzymes for digestion of such food increases, and β-galactosidase decreases. A complete enzymatic system of piglets is formed about 45 days“Said Aleksandar Drljacic.

When a 25-kilogram pig that has fully formed an enzyme system for plant foods is given a large amount of lactose-rich whey and β-galactosidase is absent in the small intestine, whey passes to the colon in which there is a bacterium Clostridium that causes putrefaction, gas formation, diarrhea and causes to the death of the animal.

To avoid this, whey must be gradually introduced, 15 to 20 days into the diet and not interrupted until the end of fattening.

“If he suddenly stops giving whey, pigs increase plant food intake, for which there is a lack of enzymes in the digestive tract, this leads to putrefactive processes, the appearance of diarrhea and death. Caution should be exercised both at the beginning and at the end of whey administration. Because it is lactose sugar, when taken into the body, it is treated with the action of the enzyme β-galactosidase, under the action of which it glucose and galactose“, He explained.

PigsPhoto: Agromedia

The market demands more meat production than fat

He explains that the increase in the concentration of glucose in the blood causes increased activity of the pancreas and the presence of insulin in the blood. High activity of the pancreas, as a consequence of high blood glucose concentration, in pigs in which the diet uses whey in large quantities over a long period of time not to be neglected.

Also, lactose acts as a laxative, so piglets have soft chair. The presence of sulfur and sodium in whey can cause diarrhea in piglets. Galactose is a carbohydrate and from it creates fat. Meat is made from protein. The market demands more meat production than fat. Feeding pigs with concentrated nutrients gives better meat quality.


Source: Agromedia by www.agromedia.rs.

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