Effect of a linseed diet on lipogenesis, fatty acid composition and stearoyl-CoA-desaturase in rabbits

Benatmane, F.; Kouba, Maryline; Youyou, A.; Mourot, Jacques

doi:10.1017/s1751731111001145

Cited by 25 publications

(31 citation statements)

References 40 publications

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“…In the current study, growth performance of broiler chickens in days 21-42 and 1-42 of treatment was in line with previous reports that the substitution of some (Olomu and Baracos 1991) or all (Benatmane et al 2011) dietary oil with FO did not significantly affect weight gain, feed consumption, and feed efficiency. The study of Rahimi et al (2011) showed that BW gain during days 1-21 did not differ by feeding 7.5% FO, but it decreased with adding the amount of 10%, which is completely opposite to our result of the elevated BW gain at 21 days by FO1 treatment (replacing 1.25% CO by FO).…”

Section: Discussionsupporting

confidence: 92%

“…Different fatty acid deposition and a lower ratio of n-6/n-3 PUFA in the tissue of bull, rabbit, pig, broiler muscles, and eggs of hens were also achieved by changing the source of dietary fat (Raes et al 2004;Herdmann et al 2010;Oliveira et al 2010;Benatmane et al 2011). In recent years, interest has been focused on the effect of the dietary fat source on the fatty acid deposition in pig, salmon, rabbit liver, etc.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, interest has been focused on the effect of the dietary fat source on the fatty acid deposition in pig, salmon, rabbit liver, etc. (Enser et al 2000;Bell et al 2001;Benatmane et al 2011), but only few data on its effect on poultry liver have been found. As we know, liver is the major site of lipogenesis and de novo fatty acid biosynthesis (Lodhi et al 2011), and liver lipid transfer to other tissues through blood and exerting effect on the lipid content and composition.…”

Section: Introductionmentioning

confidence: 99%

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Effect of different dietary oil sources on the growth performance, blood characteristics, fatty acid profiles, and expression of lipogenic genes in the liver of broiler chickens

Yan¹,

Zhao²,

Wang³

et al. 2015

CZECH J ANIM SCI

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ABSTRACT:The effect of different levels of corn oil (CO) and flaxseed oil (FO) on growth performance, blood characteristics, fatty acid composition, and expression of lipogenic genes in the liver of broiler chickens was studied. Two hundred forty female Cobb-500 broiler chickens at the age of one day (body weight (BW) = 46 ± 4 g) were fed a corn soybean meal based diet containing 5% CO (LC), 3.75% CO + 1.25% FO (FO1), 2.5% CO + 2.5% FO (FO2) or 5% FO (FC). Chickens fed FO1 diet had better BW gain (P = 0.049) and gain/feed ratio (P = 0.006) than those fed LC and FC diets during days 1-21 of age. However, for the whole experimental period (1-42 days of age), the dietary lipid source had no effect on the growth performance. On day 42 of age, the hepatic percentages of 18:3n-3 (P = 0.001) and 20:5n-3 (P < 0.001) were higher in FC than in LC group, which led to a higher content of total n-3 PUFA and lower n-6/n-3 PUFA ratio. The contents of 18:2n-6 (P < 0.05) and Σ n-6 PUFA (P = 0.009) were lower in FC than in LC group. Chickens fed FO1 and FO2 diets had higher Ca 2+ -ATPase activity and lower lipoprotein lipase activity than those fed LC and FC diets, whereas activities of lactate dehydrogenase and Na + ,K + -ATPase were increased by FO2 than by LC diet (P < 0.05). The relative mRNA expression level of lipin 1 in chickens fed FO2 and FC was higher (P < 0.01) than in those fed LC and FO1 diets. Our results demonstrated that higher levels of FO led to hepatic enrichment of n-3 PUFA content and lower n-6/n-3 PUFA ratios in liver and increased the expression of lipin 1 whereas the expression of lipin 2, NADH dehydrogenase subunit 2, Δ-6 fatty acid desaturase, WD and tetratricopeptide repeats 1, and glyceraldehyde-3-phosphate dehydrogenase was not affected.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of different dietary oil sources on the growth performance, blood characteristics, fatty acid profiles, and expression of lipogenic genes in the liver of broiler chickens

Yan¹,

Zhao²,

Wang³

et al. 2015

CZECH J ANIM SCI

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“…However, in plasma (Table 6), and particularly in liver (Table 5), the difference in n-6 content between rabbit and chicken samples was less pronounced than in feeds (P , 0.05). Variations in the digestion process between species, their FA metabolic sites and in the activity of enzymes involved in FA metabolism between species might explain these differences (Benatmane et al, 2011;Kouba and Mourot, 2011). Furthermore, the tendency of rabbit liver to incorporate higher PUFA than chicken is consistent with our findings in animals receiving a diet that was richer in SFA, supplied through hydrogenated palm FA distillates (Tres et al, 2012).…”

Section: Resultssupporting

confidence: 84%

Use of recovered frying oils in chicken and rabbit feeds: effect on the fatty acid and tocol composition and on the oxidation levels of meat, liver and plasma

Tres

Bou

Guardiola

et al. 2013

Animal

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The addition of some fat co-and by-products to feeds is usual nowadays; however, the regulations of their use are not always clear and vary between countries. For instance, the use of recycled cooking oils is not allowed in the European Union, but they are used in other countries. However, oils recovered from industrial frying processes could show satisfactory quality for this purpose. Here we studied the effects of including oils recovered from the frying industry in rabbit and chicken feeds (at 30 and 60 g/kg, respectively) on the fatty acid (FA) and tocol (tocopherol 1 tocotrienol) compositon of meat, liver and plasma, and on their oxidative stability. Three dietary treatments (replicated eight times) were compared: fresh non-used oil (LOX); oil discarded from the frying industry, having a high content of secondary oxidation compounds (HOX); and an intermediate level (MOX) obtained by mixing 50 : 50 of LOX and HOX. The FA composition of oil diets and tissues was assessed by GC, their tocol content by HPLC, the thiobarbituric acid value was used to assess tissue oxidation status, and the ferrous oxidation-xylenol orange method was used to assess the susceptibility of tissues to oxidation. Our results indicate that FA composition of rabbit and chicken meat, liver and plasma was scarcely altered by the addition of recovered frying oils to feed. Differences were encountered in the FA composition between species, which might be attributed mainly to differences in the FA digestion, absorption and metabolism between species, and to some physiological dietary factors (i.e. coprophagy in rabbits that involves fermentation with FA structure modification). The a-tocopherol (aT) content of tissues was reduced in response to the lower aT content in the recovered frying oil. Differences in the content of other tocols were encountered between chickens and rabbits, which might be attributable to the different tocol composition of their feeds, as well as to species differences in the digestion and metabolism of tocols. Tissue oxidation and susceptibility to oxidation were in general low and were not greatly affected by the degree of oxidation of the oil added to the feeds. The relative content of polyunsaturated fatty acids/aT in these types of samples would explain the differences observed between species in the susceptibility of each tissue to oxidation. According to our results, oils recovered from the frying industry could be useful for feed uses.Keywords: vegetable frying oils, tissue lipid composition, feed ingredients, oxidability, vitamin E ImplicationsVarious fat by-products of the food chain are included in feeds. Recycled cooking oils are not intended for feed uses in the European Union, although they might be used in other countries. However, oils recovered from industrial frying processes could show satisfactory quality for this purpose. Thus, here we studied how the addition of frying oils to feeds affects the lipid composition and the stability of meat and other animal tissues. Our results reveal an acceptable ...

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“…The ultimate pH in our study was in the normal range for rabbit meat (Blasco and Piles, 1990). These results are in agreement with those reported by Benatmane et al (2011), Dal Bosco et al (2012 and Peiretti et al (2011a and with different raw material supplementation in rabbit feed. In our study, meat colour parameters were not affected significantly by AB supplementation.…”

Section: Carcass Characteristicssupporting

confidence: 93%

Dried artichoke bracts in rabbits nutrition: effects on the carcass characteristics, meat quality and fatty-acid composition

Dabbou

Gasco

Gai

et al. 2014

Animal

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In this study, the effects of the inclusion of artichoke bracts (AB) in rabbit diets on the carcass characteristics and rabbit meat quality were studied. A total of 120 rabbits aged 38 days were used and divided into three groups that were fed with different isonitrogenous and isocaloric diets supplemented with AB at 0%, 5% and 10%. The animals were single housed in wire cages at a temperature of 22 ± 2°C and had free access to clean drinking water. At 96 days of age, 12 rabbits/group were slaughtered in an experimental slaughterhouse without fasting. The carcass was weighed and the weights of the skin and full gastrointestinal tract were recorded. Carcasses were chilled at + 4°C for 24 h in a refrigerated room. The chilled carcass weight (CCW), dressing out percentage (CCW as percentage of slaughter weight), and the ratio of the head and liver were determined as a percentage of CCW. The reference carcass weight was also calculated. Carcasses were halved and the two longissimus dorsi (LD) muscles were excised. The left LD muscle was divided into two parts. The fore part was used to measure pH, colour and cooking losses. The hind part of the left LD was vacuum-packed, frozen at -20°C and then freeze-dried. Proximate composition, fatty-acid profile and thiobarbituric acid-reactive substances values were determined on freezedried samples. Results showed that carcass characteristics, LD muscle traits and its oxidative status were not affected by the AB supplementation, except for the meat ether extract content that increased from 0.68% to 0.94% on fresh matter basis with the increase of the AB supplementation (P < 0.01). The α-linolenic acid proportion decreased with the increase of the AB supplementation from 3.58% to 2.59% in the LD muscle and from 4.74% to 3.62% in the perirenal fat, whereas the n-6/n-3 ratio increased significantly with increasing AB inclusion from 7.15 to 10.20 in the LD muscle and from 6.68 to 9.35 in the perirenal fat (P < 0.01). Furthermore, no significant difference was found in preference among meat samples from each group. The enrichment of the rabbit's diet with AB allows the production of rabbit meat with a good degree of unsaturation and low saturation, even if the n-6/n-3 ratio was slightly worse.

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Effect of a linseed diet on lipogenesis, fatty acid composition and stearoyl-CoA-desaturase in rabbits

Cited by 25 publications

References 40 publications

Effect of different dietary oil sources on the growth performance, blood characteristics, fatty acid profiles, and expression of lipogenic genes in the liver of broiler chickens

Effect of different dietary oil sources on the growth performance, blood characteristics, fatty acid profiles, and expression of lipogenic genes in the liver of broiler chickens

Use of recovered frying oils in chicken and rabbit feeds: effect on the fatty acid and tocol composition and on the oxidation levels of meat, liver and plasma

Dried artichoke bracts in rabbits nutrition: effects on the carcass characteristics, meat quality and fatty-acid composition

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