Digestibility of Different Fats and Fatty Acids in the Blue Fox (<i>Alopex lagopus</i>)

Rouvinen, Kirsti; Kiiskinen, Tuomo; Makela, J.

doi:10.1080/00015128809438003

Cited by 10 publications

(5 citation statements)

References 5 publications

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“…Therefore, it is not surprising that the fat digestibility varied around 95% in groups with high fat diets (especially groups with 36% or 50% fat) in each experiment. Similar results were reported by Rouvinen et al. (1988).…”

Section: Discussionsupporting

confidence: 92%

Effects of dietary fat levels on nutrient digestibility and production performance of growing‐furring blue foxes (Alopex lagopus)

Geng

Yang

Xing

et al. 2011

Animal Physiology Nutrition

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The objective of this study was to determine whether nutrient digestibility and production performance of growing-furring blue foxes (Alopex lagopus) are affected by different dietary fat levels. Sixty-four young animals were randomly assigned to four groups (A, B, C, D) provided with diets containing approximately 12%, 26%, 40%, 54% fat in the dry matter respectively. When dietary fat level was increased, the apparent digestibility of main nutrients except for crude carbohydrates, and gross energy were improved (p < 0.0001). The amount of nitrogen excreted was reduced and the biological value of protein was enhanced (p < 0.0001). Over the experimental phase, the efficiency of metabolizable energy (ME) used for gain in group B (26% fat content) was higher than that in other groups. When diets with 12-26% fat content were fed, there was an increasing tendency in skin size. But it had negative effects on skin size and fur quality when the amount of fat content was over 40%. In conclusion, the experiment showed that dietary fat could significantly improve some nutrient utilization and significantly reduce feed/gain ratio as a main energy source. The most preferable fur quality and efficiency of ME used for gain were obtained when diet contained 26% fat level in growing-furring period.

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Section: Discussionsupporting

confidence: 92%

Effects of dietary fat levels on nutrient digestibility and production performance of growing‐furring blue foxes (Alopex lagopus)

Geng

Yang

Xing

et al. 2011

Animal Physiology Nutrition

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“…The ATTD differences observed between SO and BT confirmed that unsaturated fat sources have higher digestibility, which corroborates previous findings of studies with other carnivore species (Rouvinen et al 1988;Rouvinen 1990;Pontieri 2008). The ATTD differences observed between SO and BT confirmed that unsaturated fat sources have higher digestibility, which corroborates previous findings of studies with other carnivore species (Rouvinen et al 1988;Rouvinen 1990;Pontieri 2008).…”

Section: Apparent Total Tract Digestibilitysupporting

confidence: 90%

“…The latter results confirm the lower digestibility of this FA independently of microbial interaction on the hindgut, because mink have a short digestive tract, lack a caecum and exhibit minimal hindgut microbial activity (Skrede 1979). The negative effect of stearic acid (18:0) on the digestibility of fat sources was also reported in blue fox (not as pronounced as in the mink) and the dog, where it amounted to 80-83% (Rouvinen et al 1988). Even so, Rouvinen et al (1988) proposed an equation for calculation the ATTD of a fat source based on its stearic acid (C18:0) content:…”

Section: Apparent Total Tract Digestibilitymentioning

confidence: 63%

“…The negative effect of stearic acid (18:0) on the digestibility of fat sources was also reported in blue fox (not as pronounced as in the mink) and the dog, where it amounted to 80-83% (Rouvinen et al 1988). Even so, Rouvinen et al (1988) proposed an equation for calculation the ATTD of a fat source based on its stearic acid (C18:0) content:…”

Section: Apparent Total Tract Digestibilitymentioning

confidence: 63%

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Soybean oil and beef tallow in dry extruded diets for adult dogs

Marx

Trevizan

Ahlstrøm

et al. 2015

Archives of Animal Nutrition

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The aim of the study was to determine the effects of two different fat sources (soybean oil (SO) and beef tallow (BT)) in dry extruded dog diets on the intake of food and metabolizable energy (ME), on faecal characteristics and apparent total tract digestibility (ATTD) of nutrients and energy. Ten adult dogs of different breeds were used in a Latin square design. Five experimental diets were designed from a basal diet. A Control diet was coated with 1% SO and four other diets were obtained by coating the basal diet with 6.5% and 13% of SO or BT. The Control, 6.5% and 13% coated diets contained approximately 8.5%, 15% and 20% fat, respectively. The dogs had similar dry matter (DM) intakes and, consequently, higher ME intakes with an increased fat content for both sources (p < 0.05). Fat digestibility was highest for Diet SO13% (p < 0.05). The ATTD of DM and organic matter was highest (p < 0.05) for Diets SO13% and BT13%. Fat coating improved the faecal score, especially for Diet BT13%. The dietary ratios of protein:fat:carbohydrate [% of ME] were close to AAFCO's estimates. For SO a higher ATTD (99.1%) and ME content (38.88 MJ/kg) was estimated than for BT (ATTD 92.9% and 36.37 MJ ME/kg). Both SO and BT can comprise up to 13% of the diet. However, SO was more susceptible to leaking from the kibbles with the coating method applied.

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“…There is, however, no similarity in the absorption mechanism for the four mentioned amino acids except for proline and hydroxyproline and we therefore believe that the significant differences occurring Table 3). The values are in agreement with digestibility of beef tallow in blue foxes (Rouvinen et al, 1988). The low dietary fat:carbohydrate ratio level may have reduced the fat digestibility values somewhat as observed with mink .…”

Section: Digestibilitysupporting

confidence: 82%

Comparative nutrient digestibility of arctic foxes (Alopex lagopus) on Svalbard and farm-raised blue foxes (Alopex lagopus)

Ahlstrøm¹,

Fuglei

Mydland³

2003

Comparative Biochemistry and Physiology Part A: Molecular &

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Arctic foxes from Svalbard (ns4) and farmed blue foxes (ns4) was used in a digestibility experiment with a highcarbohydrate feed to add more information to the nutritional physiology of the arctic fox, and to compare its digestive capacity with that of the farmed blue fox. The arctic fox has a diet containing mainly protein and fat from mammals and birds, while farmed blue foxes have been exposed to an omnivorous dietary regime for more than 80 generations. The experiment showed in general no difference in digestive capacity for protein and fat between the foxes (P)0.05), but for carbohydrates, including starch and glucose, the blue fox revealed higher digestibility values. The superior digestive capacity for carbohydrates in blue fox might be a result of a long-term selection of animals digesting dietary carbohydrates more efficiently, or that an early age exposition to dietary carbohydrates has given permanent improvement of the carbohydrate digestion in the gut. ᮊ

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Digestibility of Different Fats and Fatty Acids in the Blue Fox (Alopex lagopus)

Cited by 10 publications

References 5 publications

Effects of dietary fat levels on nutrient digestibility and production performance of growing‐furring blue foxes (Alopex lagopus)

Effects of dietary fat levels on nutrient digestibility and production performance of growing‐furring blue foxes (Alopex lagopus)

Soybean oil and beef tallow in dry extruded diets for adult dogs

Comparative nutrient digestibility of arctic foxes (Alopex lagopus) on Svalbard and farm-raised blue foxes (Alopex lagopus)

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