Kraftfoder baserat på spannmål eller betfiber i fullfodersystem till svenska mjölkkor : effekter på mjölkavkastning, foderkonsumtion och resursutnyttjande
The use of cereals as feedstuffs for ruminants has been questioned, critics claim that only fiber rich feed materials such as roughage and by-products belong in dairy cattle feeding. In feed based on by-products, the cereals are usually replaced with sugar beet pulp to provide the dairy cattle wit...
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| Formato: | H2 |
| Lenguaje: | sueco Inglés |
| Publicado: |
SLU/Dept. of Animal Nutrition and Management (until 231231)
2018
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| Materias: |
| Sumario: | The use of cereals as feedstuffs for ruminants has been questioned, critics claim that only fiber rich
feed materials such as roughage and by-products belong in dairy cattle feeding. In feed based on
by-products, the cereals are usually replaced with sugar beet pulp to provide the dairy cattle with
easily fermented carbohydrates. Under Swedish conditions, however, this strategy leads to a lower
level of self-sufficiency at national level. Since domestic production of sugar beets is not sufficient
to provide all dairy cows with concentrate at today’s levels, the content consists of imported sugar
beet pulp, unlike barley that are grown in most parts of the country. Most previous studies have
shown that the grain fraction for cows in different lactation stages can be replaced by by-products
without affecting the milk yield. A change-over trial with 21 days for each of the two treatment
periods was conducted. Forty-eight cows (125 ± 20 DIM) were divided into two treatment groups
taking into account lactation number, breed and days in milk. The purpose was to find out how
milk yield, body condition score, feed intake, feed efficiency and digestibility were affected by
sugar beet pulp-based by-product concentrate without starch (US) and cereal-based by-product
concentrate with starch (MS) when fed ad libitum in a total mixed ration (TMR). MS resulted in
significantly higher daily feed intake as well as yield measured in kg of milk, kg of ECM, kg of
lactose, kg of protein and higher percent of protein in the milk. US resulted in higher feed
efficiency, but resulted in a lower financial net in this study. Self-sufficiency and the proportion
of human edible feed in the cow diet became higher with MS. In the present study, the Swedish
cereals have proved to be a good base in food for dairy cows in order to increase Sweden's selfsufficiency
on feed, thereby promoting sustainable domestic food production. |
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