The role of soybeans in poultry and pig feed

26 Oct 2022

The role of soybeans in poultry and pig feed

The benefits of the inclusion of soybeans and their derived products for poultry and pig nutrition are evident.However, there are certain factors that must be looked after in order to avoid negative impacts on productive yields. 

  Soybean Processing 

Soy processing is useful and necessary for:

destroy or remove undesirable components,

make nutrients more available,

Improve palatability.

agriCalendar Nutri int magazine

Moist heat treatment  is particularly effective in reducing trypsin inhibitor activity.

With current manufacturing processes, the residual trypsin inhibitory activity in  soybean protein products is approximately 5 to 20% of the original inhibitory activity found in raw soybeans.

The amount of heat required to destroy trypsin inhibitors and other hemagglutinins found in raw soybeans depends on the time of exposure. Therefore,  high temperatures in shorter exposure periods are just as effective as lower temperatures for longer periods.

agriCalendar
Subscribe Now!
Nutri int magazine

 

Soybean products in Poultry and Swine Nutrition

Whole soybeans can replace soybean meal in pig and poultry diets with similar yields.

The decision on which soy product to use should be based on the composition, availability, and costs of the product.

  Soybean meal

Soybean meal is the most common source of protein in poultry and pig feeds (Table 1). This popularity stems from its nutrient content and relative absence of anti-nutritional factors.

Table 1. Global consumption of meal or flour as a source of protein for domestic animals.

soybeansModified from Dourado et.al 2011

The quality of soybean meal is the result of many factors, including the variety, origin, and storage of the beans.

The multiple processing steps that are carried out from the moment the bean is received, affect the quality of the end products like: flour and oil.

The heat treatment of flour is essential to optimize its protein quality. Variables such as: humidity, temperature and time are interrelated and are essential for achieving adequate cooking conditions.

Soybeans

Many in vitro tests  designed to measure protein quality in soy have been proposed and evaluated. Simple crude protein or amino acid assays provide information about the protein, but do not provide useful information about the quality of the protein.

That is why analyses of trypsin inhibitors, urease activity, protein solubility in potassium hydroxide, protein solubility in water and dye binding methods have been used to assess protein quality.




TO CONTINUE READING REGISTER IT IS COMPLETELY FREE


Access to articles in PDF
Keep up to date with our newsletters
Receive the magazine for free in digital version




REGISTRATION




ACCESS
YOUR ACCOUNT







LOGIN


Lost your password?




agriCalendar
Nutri int magazine
Subscribe Now!
Relacionado con Raw Materials
Últimos posts sobre rumiantes - Raw Materials
Contenido sobre otras especies - Raw Materials
Nutri int magazine
Subscribe Now!
agriCalendar

MAGAZINE NUTRINEWS INTERNATIONAL

Subscribe now to the technical magazine of animal nutrition

JOIN OUR NUTRITIONAL COMMUNITY

Access to articles in PDF
Stay up to date with our newsletters
Receive the magazine for free in digital version

DISCOVER
AgriFM - Los podcast del sector ganadero en español
agriCalendar - El calendario de eventos del mundo agroganaderoagriCalendar
agrinewsCampus - Cursos de formación para el sector de la ganadería