Dietary fiber for dogs: III. Effects of beet pulp and oat fiber additions to dog diets on nutrient intake, digestibility, metabolizable energy, and digesta mean retention time

Abstract

The objective of this experiment was to determine whether alkaline hydrogen peroxide-treated oat hulls (termed oat fiber; OF) are nutritionally efficacious as a source of dietary fiber in meat-based dog foods. Thirty female English Pointers were assigned in a completely randomized design to isonitrogenous diets. Treatments were 1) control diet, 2) 7.5% added beet pulp (BP), and 3) 2.5, 4) 5.0, and 5) 7.5% added OF. Inclusion of 7.5% BP increased (P less than .05) DM intake and decreased (P less than .05) digestibility of DM and OM compared with the control. Dry matter intake increased (P less than .05) with increasing level of OF and digestibility of DM, OM, and total dietary fiber (TDF) decreased (P less than .05). Digestibility of DM, OM, and TDF were higher for dogs fed the 7.5% BP than for those fed the 7.5% OF treatment. Digestible energy, expressed as a percentage of GE, was greater for the control treatment than for the 7.5% BP treatment. A linear decrease in DE (percentage of GE) was noted as the concentration of OF increased, and the DE value (percentage of GE) for the 7.5% BP treatment was greater (P less than .05) than that for the 7.5% OF treatment. A linear decrease (P less than .05) was noted in ME, expressed as a percentage of GE, as the level of OF increased. Frequency of defecation and mean retention time were unaffected (P greater than .05) by treatment. Oat fiber was an effective substitute for BP in dog diets.

Replacing wheat bran by corn gluten feed without steep water in complete dog food

“…The disparity between these data may be attributed to the difference in the quality of the substituted ingredients in the treatments and the type and amount of fibre in these ingredients. For this study, the formulated diets maintained similar NDF and ADF values (Table 1), unlike in Fahey et al (1992). The digestibility of GE was higher than that observed by Fahey et al (1990b) and Cole et al (1999), which may be because their diets had higher energy concentration and lesser EE concentration as observed in the diets from this study.…”

“…The major digestible energy (DE, ME) coefficients were observed with 0 replacement level and can be attributed to the lesser amount of crude fibre observed in this diets, followed by 90 g/kg diets, which presented higher amounts of EE and NFE. On the other hand, Burkhalter et al (2001), using soybean hulls, observed a decrease (p < .05) in the digestibility of the nutrients regardless of the proportion of insoluble fibre, as well as Fahey et al (1992) that observed that the DM, OM and TDF digestibility coefficients decreased as the hulls were added to the food. The disparity between these data may be attributed to the difference in the quality of the substituted ingredients in the treatments and the type and amount of fibre in these ingredients.…”

“…Different fibre sources have been tested, as corn gluten with 21% of crude protein (Kawauchi et al 2011), beet pulp, tomato pomace, peanut hulls, wheat bran, alkaline hydrogen peroxide-treated wheat straw (Fahey et al 1990a), alkaline hydrogen peroxide-treated oat hulls (Fahey et al 1992), SolkaFlocV R (a product based on carefully processed, highly purified cellulose; International Fiber Corporation, North Tonawanda, NY), citrus pulp and three blends, including SolkaFloc V R and gum arabic, citrus pectin, gum talha, carob bean gum, locust bean gum, beet pulp, citrus pectin and guar gum (Sunvold et al 1995). The differences in the solubility and fermentability of these fibres can provide different physiological benefits and affect faecal characteristics (de-Oliveira et al 2008;Calabr o et al 2012).…”

Composição nutricional e avaliação de rótulo de rações secas para cães comercializadas em Jaboticabal-SP

“…Esses autores verificaram, ainda, diferença significativa na taxa de crescimento, qualidade da pelagem e características hematológicas e bioquímicas dos cães alimentados com rações com alta fibra. Resultado semelhante foi encontrado por Burrows et al (1982), que correlacionaram inversamente o conteúdo de celulose do alimento com sua digestibilidade e por Fahey et al (1992), que demonstraram diminuição linear da digestibilidade da energia com a adição de fibra de aveia à ração. Soma-se a esse aspecto o fato de a fibra poder interferir negativamente sobre a absorção de macro e micro-elementos (Gross et al, 2000).…”

Composition, digestibility and nutritive value of cereals for dogs

“…Moreover, dehulling significantly improves the nutritional quality of rice, oats and barley, which are harvested with the hulls attached, compared to other cereals, which lose their hulls during the threshing step and are handled as naked grains. The high crude fibre and cellulose contents of hulls have negative effects on the dry matter (DM), organic matter (OM), crude protein (CP), energy and mineral digestibilities of cereals in dogs (Fahey et al 1992, Lewis et al 1994, Kienzle et al 2001. The crude fibre content of oats (100-150 g kg -1 DM) is twice as high as in barley, wheat and corn, and so the apparent nutrient digestibilities of oats are, in most cases, lower than of other cereals (Moore et al 1980, Walker et al 1994.…”