Evaluating barley feed fractions from integrated ethanol-starch production in diets of ruminants

Self Cite

Abstract. Twenty Friesian cows in four pens were arranged in a 4x4 Latin Square with a 2 x 2 factorial arrangement of treatments to evaluate the effect of barley fibre with solubles and dried distillers solubles (DDS) as a protein supplement on silage intake and milk production. Each experimental period lasted 4 wk, during which the cows were given ad libitum silage with one of the four supplements: barley (B), barley + DDS (BD), barley fibre (F) and barley fibre + DDS (FD). All the supplements were given at the rate of 7.5 kg/day on dry matter (DM) basis. In cows given DDS, 0.9 kg of barley or barley fibre was replaced by DDS on DM basis. The principal carbohydrate constituent of the B supplement was starch and of the F supplement hemicellulose.Silage DM intake was 0.38 kg/day (P<0.05) higher for cows given F diets but the total DM intake was not significantly affected by the diet given.Milk yield was 2.2 kg/day (PcO.OOl) higher in cows given F diets than B diets. But milk fat content was lower (P<0.001), and as a result milk fat yield was slightly higher (805 v. 787 g/day), with B diets. F diets were also associated with a lower (P <0.05) protein concentration in milk, but because of the higher yield, milk protein yield was 8.3 % (P<0.001) higher than in B diets. Feeding F diets increased milk lactose content (P<0.05) and lactose yield (P< 0.001) relative to B diets. Live weight gain was higher (P<0.05) for cows given B diets. DDS supplementation had no significant effect on feed intake, milk production or milk composition. Cows given DDS increased their live weight less (PcO.OI) than those fed without DDS.Despite the smaller amount of ME available for production, milk energy yield was higher (Pc0.05) in cows given F diets, indicating a shift in energy partioning towards milk instead of body tissues. Estimates of the efficiency of utilization of ME for milk production were higher for cows given F diets than for those given B diets both including and ignoring live weight change in the calculations.The results show that barley fibre with solubles, despitea lower digestibility than barley, can produce more milk and protein and a similar yield of milk fat provided that silage is given ad libitum.

Section: Design and Treatmentsmentioning

confidence: 99%

“…1984). Other protein supplements, barley protein and dried distillers solubles (DDS), are now available from integrated ethanol-starch production (Näsi 1988). The annual production will be soon about 10million kg.…”

Section: Introductionmentioning

confidence: 99%

Silage intake and milk production in cows given barley or barley fibre with or without dried distillers solubles

Ala-Seppälä

Huhtanen

Näsi

1988

Self Cite

“…Barley fibre is a fibrous product comprised mainly of the cell wall fraction of barley endosperm and is used as energy source in cattle feeding. A detailed description of the integrated starch-ethanol process and the products of the process are given by Näsi (1988). As the integrated starch-ethanol process can be used also for the production of bio-ethanol, it is evident that increasing quantities of by-products will be produced in the future.…”

Section: Introductionmentioning

confidence: 99%

Effects of replacing different proportions of barley grain by barley fibre on performance of dairy bulls

Huuskonen¹,

Khalili²,

Joki‐Tokola³

2008

The objective of the present experiment was to study the effects of partial replacement of barley grain with barley fibre (BF) on animal performance, carcass traits and diet digestibility of growing dairy bulls. The feeding experiment comprised 20 Finnish Ayrshire bulls and 12 Holstein-Friesian bulls, and four treatments (8 bulls per treatment). There were four diets with two offered at stage 1 (from the initiation of the study to 450 kg live weight) and four at stage 2 (from 450 kg live weight to slaughter). The control diet (BF0) included grass silage (460 g kg -1 dry matter) and barley grain (540), BF25 diet included grass silage (460), barley grain (405) and BF (135), BF50 diet included grass silage (460), barley grain (270) and BF (270), and BF75 diet included grass silage (460), barley grain (135) and BF (405). At stage 1 there were only two treatments (BF0 and BF50) and at stage 2, all four treatments were included. All bulls were fed total mixed ration ad libitum. The mean initial live weight of the bulls was 261 kg and the mean final live weight 650 kg. At stage 1 there were no significant treatment differences in dry matter, energy or protein intakes or in live weight gain. At stage 2, replacing barley grain with BF led to a linear decrease of daily live weight gain (P < 0.05) and a linearly reduced feed conversion (kg dry matter kg -1 live weight gain) (P < 0.05). The apparent digestibility of the organic matter and neutral detergent fibre decreased linearly with increasing BF supplementation (P < 0.001). The dressing proportion and the carcass fat score decreased linearly (P < 0.05) with partial replacement of barley grain with BF. On carcass conformation, treatment had a significant (P < 0.05) quadratic effect: the BF25 and BF50 diets were classified highest. The results indicate that 50% of barley starch can be replaced with BF without affecting growth, but feed efficiency factors may decrease when barley starch is replaced with BF. At 75% replacement, feed intake was reduced, which resulted in a lower energy intake and reduced level of performance.

“…Distiller's solubles, a by-product from the integrated starch-ethanol process (NÄSI 1988) are mainly used as a protein source for dairy cattle. Increasing dietary crude protein (CP) concentration by including dried distiller's solubles (DDS) in a grass silagebased diet had no effect on milk yield or milk composition (Ala-Seppälä et al 1988).…”

Section: Introductionmentioning

confidence: 99%

Milk production and concentrations of blood metabolites as influenced by the level of wet distiller’s solubles in dairy cows receiving grass silage-based diet

Huhtanen

Miettinen

1992