Effects of tannins supplementation to sheep diets on their performance, carcass parameters and meat fatty acid profile: A meta-analysis study

Torres, Rodrigo de Nazaré Santos; Ghedini, Caren Paludo; Paschoaloto, Josimari Regina; Silva, D.A.V. da; Coelho, L.M.; Almeida, Gercilio Alves de; Neto, Otávio Rodrigues Machado; Almeida, Márco Túlio Costa

doi:10.1016/j.smallrumres.2021.106585

Cited by 11 publications

(9 citation statements)

References 45 publications

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“…Thus, the resultant meat product had reduced levels of FA that were termed undesirable and enhanced levels that were characterized as beneficial to human health ( 44 ). Meat quality indices can be improved by the inclusion of lipid supplements in diets fed to animals raised under feedlot conditions to increase the levels of oleic, linoleic, and linolenic acids and other n-3 LC-PUFA ( 45 , 46 ). To the best of our knowledge, this is the first study that evaluated the supplementation of diets in TAW MARGRA with promising results.…”

Section: Discussionmentioning

confidence: 99%

Fortification of diets with omega-3 long-chain polyunsaturated fatty acids enhances feedlot performance, intramuscular fat content, fat melting point, and carcass characteristics of Tattykeel Australian White MARGRA lambs

et al. 2022

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Meat eating quality indices such as intramuscular fat content (IMF) and fat melting point (FMP) of the Longissimus thoracis et lumborum muscle and the feedlot performance, carcass traits, and commercial wholesale cuts of lot-fed Tattykeel Australian White (TAW) MARGRA lambs as a result of dietary fortification of the diet with omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) were evaluated. A total of 75 TAW MARGRA lambs at 6 months of age with an average liveweight of 30 ± 1.2 kg were used. The lambs were randomly allocated to the following three dietary treatments of 25 lambs each in a 47-day feeding trial using a completely randomized experimental design: (1) control diet of hay plus pellets without omega-3 oil, (2) hay plus commercial whole grain pellets (MSM) without omega-3 oil, and (3) hay plus pellets fortified with omega-3 oil. It was hypothesized that dietary supplementation with omega-3 fortified pellets will improve feedlot performance, meat-eating quality indices of IMF, FMP, and carcass characteristics. Lot-fed lambs on the MSM whole grain had the highest feed intake of 1.69 kg/day, followed by the control at 1.57 kg/day and the lowest in the omega-3 diet at 1.01 kg/day (p = 0.0001). However, the omega-3 diet had the highest average daily gain of 230 g/head/day (p = 0.0001), indicating the greatest feed efficiency since it had the best growth response with minimal feed intake. Post-slaughter evaluation of the Longissimus thoracis et lumborum muscle revealed significant treatment variations in IMF (p = 0.0001), FMP (p = 0.0001), pH (p = 0.0380), and wholesale French rack primal cut (p = 0.0001). Strong correlations (p < 0.05) between liveweight, temperature, pH, FMP, and IMF were observed. Similarly, significant correlations between carcass characteristics of total saleable meat yield, lean trim, fat trims, bones, and leg shank were evident (p < 0.05). However, there were no treatment differences in the final liveweight, GR fat depth, hot standard carcass weight, or dressing percentage. The findings indicate that feedlot performance, meat-eating quality traits such as IMF and FMP, and commercial wholesale French rack cuts can be further improved during feedlot finishing of TAW MARGRA lambs through dietary supplementation with omega-3 oils, and hence the tested hypothesis of improved meat quality attributes is partially confirmed.

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Section: Discussionmentioning

confidence: 99%

Fortification of diets with omega-3 long-chain polyunsaturated fatty acids enhances feedlot performance, intramuscular fat content, fat melting point, and carcass characteristics of Tattykeel Australian White MARGRA lambs

et al. 2022

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“…The lamb meat FA composition and content may be affected by dietary FA profile, animal breed, sex, and age [ 37 ], or even by the amount of dietary polyphenols supplied, especially when lambs are fed with tannin-rich ingredients [ 9 ]. In this study, all diets were highly concentrated in nutrients and formulated to meet the recommended net energy level for Spanish fattening lambs [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

“…It is known that the IMF content is a key determinant of quality in meat because, within moderate levels, there is a positive impact on flavour and juiciness [ 39 ]. However, some recent meta-analyses found no effect of dietary inclusion of CT-rich feedstuff on the IMF of lamb meat [ 9 , 40 ]. Contrary, other studies reported a negative effect of carob on fat content in the carcass or meat from lambs [ 5 ].…”

Section: Resultsmentioning

confidence: 99%

“…Although previous studies highlighted the effects of CTs on lambs’ performance [ 5 ], more attention has recently been paid to its effects on meat quality [ 6 ]. The literature is not completely conclusive about the effects of tannins on meat; however, some studies highlight an improvement in meat-colour stability [ 7 ], lower lipid oxidation [ 8 ], a higher fatty acid (FA) concentration with human health benefits [ 9 , 10 ], and a reduction in skatole subcutaneous caudal fat and typical sheep meat odour [ 11 ]. At present, the consumer rejection of non-natural antioxidants in the meat industry has led to the examination of other antioxidant sources [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

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Colour Stability, Fatty Acid Profile, and Lipid Oxidation in Meat Stored in Modified Atmosphere Packaging from Light Lambs Fed with Concentrate with Carob Pulp (Ceratonia siliqua L.)

et al. 2023

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There is a growing interest in using by-products rich in polyphenols, such as carob pulp (Cp, Ceratonia siliqua L.), as a dietary source of antioxidants for animals. This study assesses the effects of including Cp in lambs’ diet and meat display time (0, 7, 9, and 11 days) in modified atmosphere packaging on meat colour, fatty acid (FA) composition, tocopherol levels, and lipid oxidation values in the Semimembranosus muscle of 40 light lambs. The lambs were fed with concentrates supplemented with increasing Cp levels (0, 150, and 300 g/kg) for 45 days before slaughter. Metmyoglobin (MMb) and malondialdehyde (MDA) contents increased linearly with display time (p < 0.05), regardless of diet (p > 0.05). At 11 days of display, MMb (28 ± 0.8%) and MDA (0.6 ± 0.1 mg MDA/kg of meat) contents remained within the acceptable limits. The α-tocopherol content was lower in the 30% Cp group and meat (p < 0.05). Total saturated and monounsaturated FA contents (934 ± 64 and 823 ± 65 mg/100 g of meat, respectively) did not differ significantly among the groups. However, the meat from lambs fed with 30% Cp showed reduced levels of branched-chain FAs, while polyunsaturated FAs increased (p < 0.05) compared to the control lambs. The inclusion of Cp in the lamb’s diet, up to 30%, did not lead to meat deterioration and improved certain quality parameters, including a healthier FA profile. These findings highlight Cp’s potential as an alternative antioxidant source in animal diets.

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“…Other research showed that T.vulgare leaf aqueous extract was quite safe for rodents [ 53 ]. Condensed tannins do not have as negative an effect as thujone, but also can reduce feed intake, fiber digestibility, and animal performance [ 36 ], change the concentration of acids and microorganisms in the rumen, and reduce the number of protozoa, especially Dasythricha , Entodinium and Diplodinium for sheep [ 54 ]. In this case, the dosage is important.…”

Section: Discussionmentioning

confidence: 99%

Anthelmintic Activity of Tanacetum vulgare L. (Leaf and Flower) Extracts against Trichostrongylidae Nematodes in Sheep In Vitro

Kļaviņa

Keidāne

Ganola

et al. 2023

Animals

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Due to the high prevalence of gastrointestinal nematodes in sheep, the growing anthelmintic resistance, and the development of organic farming systems, sustainable alternatives are being sought. One such method is phytotherapy. This study aimed to evaluate the in vitro ovicidal and larvicidal activity of extracts of tansy (Tanacetum vulgare L.) growing in Latvia on gastrointestinal nematodes (Trichostrongylidae) in sheep. The leaves and flowers of the tansy were extracted separately in 70%, 50%, and 30% ethanol and acetone. Six concentrations were prepared from each extract 500 mg/mL, 200 mg/mL, 100 mg/mL, 50 mg/mL, 20 mg/mL, and 10 mg/mL. In vitro egg hatching test and micro-agar larval development test were performed. Extracts of tansy have strong larvicidal activity. The highest percentage of larvae inhibition for most of the extracts was 100%, but for egg inhibition, it was 95.8% for the 200 mg/mL concentration of 50% acetone and 93.3% for the 500 mg/mL concentration of 50% ethanol leaf extracts. All tansy extracts had ovicidal and larvicidal activity against Trichostrongylidae in sheep.

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Effects of tannins supplementation to sheep diets on their performance, carcass parameters and meat fatty acid profile: A meta-analysis study

Cited by 11 publications

References 45 publications

Fortification of diets with omega-3 long-chain polyunsaturated fatty acids enhances feedlot performance, intramuscular fat content, fat melting point, and carcass characteristics of Tattykeel Australian White MARGRA lambs

Fortification of diets with omega-3 long-chain polyunsaturated fatty acids enhances feedlot performance, intramuscular fat content, fat melting point, and carcass characteristics of Tattykeel Australian White MARGRA lambs

Colour Stability, Fatty Acid Profile, and Lipid Oxidation in Meat Stored in Modified Atmosphere Packaging from Light Lambs Fed with Concentrate with Carob Pulp (Ceratonia siliqua L.)

Anthelmintic Activity of Tanacetum vulgare L. (Leaf and Flower) Extracts against Trichostrongylidae Nematodes in Sheep In Vitro

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