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| Titel: |
Roughages for Growing Pigs, with Emphasis on Chemical Composition, Ingestion and Faecal Digestibility |
| Auteur: |
Carlson, Dorthe Lærke, Helle N. Poulsen, Hanne D. Jørgensen, Henry |
| Verschenen in: |
Acta agriculturae Scandinavica. Section A, Animal science |
| Paginering: | Jaargang 49 (1999) nr. 3 pagina's 129-136 |
| Jaar: |
1999-08-11 |
| Inhoud: |
Two experiments, each with 10 gilts of 30 kg initial bodyweight, were set up to gain experience in feeding three roughages under controlled experimental conditions. The experiments were designed to establish what proportion of the total diets the roughages can make up without refusal, and to get preliminary results on the apparent faecal digestibility of diets containing three kinds of roughage. In experiment 1 (exp. 1), the roughage consisted of either fresh or frozen (thawed) clover-grass. In experiment 2 (exp. 2), clover-grass silage and whole-crop pea-barley silage was studied. The faecal digestibility of gross energy (GE), dry matter (DM), organic matter (OM), dietary fibre (DF) and crude protein (CP) were measured for pigs fed diets including these roughages. The three roughages, leaves and stems of clover-grass and the basal diets were also tested for in vitro OM digestibility. Roughage intake was similar in both experiments. The average proportion of roughage ingested was 18-19% of DM. There were no differences between fresh and frozen (thawed) clover-grass nutrient digestibility values. Glucose (cellulose) and xylose were the main constituents of the non-starch polysaccharides (NSP) in the roughages, with whole-crop pea-barley silage having the highest content. The faecal digestibility of NSP was significantly lower for diets based on whole-crop pea-barley silage compared to clover-grass silage (exp. 2). In both experiments, the GE, DM, OM and CP digestibility did not differ. The in vitro OM digestibility demonstrated superior values for clover-grass leaves compared to the stems. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 8 gevonden artikelen
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