Blue lupin flour

Blue lupin supplementation reduces methane production in dairy cows

Maria Villagrasa & Fernando Diaz

There is great reliance on soybean meal as the main source of protein in animal production, and as a result the animal feed sector is looking for protein alternatives with which to replace it. Blue lupins (Lupinus angustifolius) are a legume of Australian origin that could be an alternative protein source in animal production.

Lupinus is a very diverse and widespread genus in the Fabaceae family with numerous species. It is distributed over a wide range of climates, from the subarctic region to semi-desertic and subtropical climates, as well as from sea level to alpine ecosystems.

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Inclusion of lupins in dairy cow diets improves milk fatty acid profile

María Villagrasa & Fernando Diaz

The deficit of feed protein sources in Europe is considered a major problem with alternative sources needed to be found to reduce dependence on imported protein concentrates. From this perspective, lupin seeds can be an alternative source of locally produced proteins.

Lupin seeds contain 28 to 42% crude protein (CP) on a dry matter (DMS) basis; this protein however degrades rapidly in the rumen. It also contains a high concentration of carbohydrates and non-digestible fiber.

In addition to the high protein content, the lupin plant has a great capacity for nitrogen fixation and the release of organic phosphorus from the soil, thus improving the soil nutrient profile for subsequent crops.

The oil in lupin seeds could play an important nutritional role because of their fatty acid profile (FA), particularly polyunsaturated fatty acids (PUFA), which are important in human and animal nutrition.

Special emphasis is placed on enough consumption of omega-3 FA with a recommended ratio of n-3 to n-6 of 1:4 in the diet. Lupin seed oil has a balanced FA composition with a total saturated FA of approximately 10% and a total PUFA of 90%. Among the PUFAs, the most abundant are oleic and linoleic, comprising 86% of the total oil.

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Lupin seed as a protein supplement for lactating dairy cows

Juan Sánchez Duarte & Fernando Díaz

Lupins (Lupinuss spp.) are legume seeds that can be an economic and nutritional source of protein for lactating dairy cows. Its high protein (35-40% dry matter; DM) and fat (9.8-11.5% DM) content, makes lupins a good alternative for replacing traditional protein meals in dairy farms.

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