Production, composition, fatty acid profile and sensory traits of milk from goats fed crude glycerin from waste frying oils used in biodiesel production

Freitas, N.E.; Araújo, Marcos Jácome de; Oliveira, Ronaldo Lopes; Lanna, Dante Pazzanese Duarte; Marques, Carlo Aldrovandi Torreão; Torreão, J.N.C.; Santos, Carlos Barbosa dos; Júnior, J.M. Silva; Edvan, Ricardo Loiola; Bezerra, Leílson Rocha

doi:10.1016/j.livsci.2020.104060

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…In the present study, it was evident that supplementation of lambs with omega-3 oil-fortified pellets increased the muscle contents of ALA by two-to three-folds, which translated into higher contents of EPA + DHA + DPA than in muscles from the control and whole grain diets. Furthermore, the high and significant levels of C20:4n-6 in the muscle could be a result of LA being subjected to elongation and desaturation by delta-5 and delta-6 desaturases and elongase enzymes [62], since all dietary treatments favored de novo fatty acid synthesis due to high levels of C18:1 originating from elongation and desaturation of C16:0 into palmitoleic and C18:0 into oleic acids [63][64][65]. In terms of dietary n-6/n-3 PUFA ratio, the human nutrition guidelines recommend an ideal value of not more than 4 [66], because n-3 PUFA plays an anti-inflammatory role [67], while n-6 PUFA exerts pro-inflammatory effects [68] in asthma and rheumatoid arthritis [69] and increased risk of cancer [70].…”

Section: Discussionmentioning

confidence: 99%

Nutritional Enhancement of Health Beneficial Omega-3 Long-Chain Polyunsaturated Fatty Acids in the Muscle, Liver, Kidney, and Heart of Tattykeel Australian White MARGRA Lambs Fed Pellets Fortified with Omega-3 Oil in a Feedlot System

Pewan

Otto

Kinobe

et al. 2021

Biology

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The aim of this research was to evaluate the nutritional enhancement of omega-3 long-chain polyunsaturated fatty acid (n-3 LC-PUFA) composition of edible lamb Longissimus thoracis et lumborum muscle, heart, kidney, and liver in response to dietary supplementation of lot-fed lambs with or without omega-3 oil fortified pellets. The hypothesis tested was that fortifying feedlot pellets with omega-3 oil will enhance the human health beneficial n-3 LC-PUFA composition of edible lamb muscle tissue and organs. Seventy-five Tattykeel Australian White lambs exclusive to the MARGRA brand, with an average body weight of 30 kg at six months of age, were randomly assigned to the following three dietary treatments of 25 lambs each, and lot-fed as a cohort for 47 days in a completely randomized experimental design: (1) Control grain pellets without oil plus hay; (2) Omega-3 oil fortified grain pellets plus hay; and (3) Commercial whole grain pellets plus hay. All lambs had ad libitum access to the basal hay diet and water. Post-slaughter fatty acid composition of the Longissimus thoracis et lumborum muscle, liver, kidney, and heart were determined using thee gas chromatography–mass spectrophotometry technique. Results indicated significant variations (p < 0.05) in fatty acid profiles between tissues and organs. Omega-3 oil fortified pellets significantly (p < 0.05) increased ≥C20 n-3 LC-PUFA (C20:5n-3 eicosapentaenoate, EPA + C22:5n3 docosapentaenoate, DPA + C22:6n3 docosahexanoate DHA); C18:3n-3 alpha-linolenate, ALA; C18:2 conjugated linoleic acid, CLA; total monounsaturated fatty acids, MUFA; polyunsaturated fatty acids, PUFA contents; and reduced the ratio of omega-6 to omega-3 fatty acids in all lamb organs and tissues without impacting shelf-life. The findings demonstrate that the inclusion of omega-3 oil in feedlot diets of lambs enhances the human health beneficial omega-3 long-chain polyunsaturated fatty acid profiles of edible muscle tissue and organs without compromising meat quality.

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Section: Discussionmentioning

confidence: 99%

Nutritional Enhancement of Health Beneficial Omega-3 Long-Chain Polyunsaturated Fatty Acids in the Muscle, Liver, Kidney, and Heart of Tattykeel Australian White MARGRA Lambs Fed Pellets Fortified with Omega-3 Oil in a Feedlot System

Pewan

Otto

Kinobe

et al. 2021

Biology

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“…In diets with a high DM content, the inclusion of this byproduct can have a beneficial effect in reducing dust generation by improving plasticity, as well as by increasing palatability. Freitas et al (2020) worked with a CG similar to the one used in this study and concluded that this byproduct can be included at up to 70 g kg-1 of the total diet DM for lactating goats, without prejudice to nutrient intake and digestibility. In an experiment testing the inclusion of CG (up to 20% of the DM) in the diet of goats, Chanjula et al (2014) did not observe adverse effects on nutrient intake or digestibility, demonstrating that this energy source can be used without changing animal performance.…”

Section: Resultsmentioning

confidence: 97%

Fermentação e degradabilidade ruminal em ovinos alimentados com glicerina bruta oriunda da produção de biodiesel a partir de óleos de fritura

et al. 2023

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Objetivou-se avaliar a inclusão da glicerina bruta (GB) oriunda da produção de biodiesel, a partir de óleos residuais de frituras, em substituição ao milho, sobre o consumo, parâmetros de fermentação e da degradabilidade ruminal da matéria seca (MS) e da proteína bruta (PB). Utilizou-se quatro ovinos canulados no rúmen, recebendo dietas contendo 0, 25, 50 e 75 g GB kg-1 da MS total da dieta. O delineamento utilizado foi o quadrado latino 4×4. Para determinação da degradabilidade, amostras do concentrado foram incubadas no rúmen nos tempos 0h, 3h00, 6h00, 12h00, 18h00, 24h00, 48h00 e 72h00. Contrastes ortogonais foram testados para efeitos linear e quadrático, considerando estes significativos quando o P < 0,05 e tendência quando P < 0,10. A inclusão da GB não influenciou os consumos de MS (média = 991,5 g dia-1) e de PB (média = 114,65 g dia-1), no entanto, o consumo de extrato etéreo (EE) aumentou linearmente (P < 0,05), o qual variou de 20,8 a 36,7 g dia-1, respectivamente, para os níveis de 0 e 75 g GB kg-1 MS da dieta. Não houve efeito da interação (P > 0,05) entre o tempo de coleta e o nível de GB para o pH e o N-NH3 ruminal. Os menores valores de pH foram observados 2 h (5,83) e 4 h (5,87) após a alimentação. O N-NH3 sofreu redução quadrática (P = 0,02), com valor mínimo de 8 mg dL-1 ao nível de 41,5 g GB kg-1 MS. A fração “A” da MS do concentrado reduziu de forma quadrática (P = 0,05), com menor valor (19,7%) ao nível de 74,1 g GB kg-1 MS, a fração “B” e a degradabilidade efetiva (DE; 8%h-1) reduziram linearmente (P < 0,05) e a degradabilidade potencial (DP) tendeu a reduzir (P < 0,10) com o aumento do nível de GB. Não foi observado efeito da inclusão da GB sobre a fração “c”, o lag time e a DE (2% h-1) da MS do concentrado. Para a PB, não foi observado efeito paras as frações “A” (média = 41,5%), “B” (média = 51,0%) e “DP” (média =92,4%), por outro lado, a fração “c” e a DE aumentaram linearmente (P < 0,05), ao passo que o lag time diminuiu linearmente (P < 0,05) com o aumento do nível de GB. Conclui-se que a GB usada nesta pesquisa pode ser adicionada até 75 g kg-1 da MS total da dieta de ovinos.

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“…On the other hand, adding CG to ruminant diets can increase beneficial fatty acids like unsaturated fatty acids (UFA) and biohydrogenation intermediates (trans-11 C18:1 and cis-9 C18:1) in milk because glycerol inhibits rumen biohydrogenation. Freitas et al (2020) observed that supplementing lactating goats' diets with CG at 0, 7, 14, and 21% of dietary DM linearly increased UFA, UFA/SFA, and cis-9, C18:1 while linearly decreasing SFA concentration in milk.…”

Section: Effect Of Crude Glycerin On Lactation Performance and Milk C...mentioning

confidence: 92%

“…Several studies indicated that the addition of glycerol to ruminant diets depressed milk fat yield and milk fat content (Ezequiel et al, 2015;Thoh et al, 2017;Freitas et al, 2020). The main lipogenic precursor in the mammary gland is acetate, and it is absorbed and incorporated into milk fat.…”

Section: Effect Of Crude Glycerin On Lactation Performance and Milk C...mentioning

confidence: 99%

Utilization of Crude Glycerin in Ruminant Diets

Selçuk

Kaya

2022

Erciyes Üniversitesi Veteriner Fakültesi Dergisi

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The intensive use of grains as feed in ruminant production systems raises concerns about future food security. The replacement of food raw materials used in animal nutrition with industrial by-products and other waste biomass that are not suitable for human consumption is viewed as the most important potential strategy that can decrease foodfeed competition and increase the profitability of animal production. Crude glycerin (CG) is a byproduct of the biodiesel industry and has been used as an alternative to grains in ruminant diets in recent years. Glycerol, which is the main component of CG, rapidly participates in energy metabolism by undergoing fermentation to propionate and butyrate in the rumen. Depending on the biodiesel production method, the effect of CG, which is obtained at varying levels of purity, on ruminants may vary according to the amount of glycerol, and other impurities in it and the amount of CG added to the diet. Due to this variability, inconsistent results are obtained regarding the efficiency of CG usage in ruminants. Based on the literature, it was concluded that CG could be used in ruminant diets at levels of 10-15% of dry matter after taking into account the levels of impurities without adversely affecting the performance.

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Production, composition, fatty acid profile and sensory traits of milk from goats fed crude glycerin from waste frying oils used in biodiesel production

Cited by 7 publications

References 39 publications

Nutritional Enhancement of Health Beneficial Omega-3 Long-Chain Polyunsaturated Fatty Acids in the Muscle, Liver, Kidney, and Heart of Tattykeel Australian White MARGRA Lambs Fed Pellets Fortified with Omega-3 Oil in a Feedlot System

Nutritional Enhancement of Health Beneficial Omega-3 Long-Chain Polyunsaturated Fatty Acids in the Muscle, Liver, Kidney, and Heart of Tattykeel Australian White MARGRA Lambs Fed Pellets Fortified with Omega-3 Oil in a Feedlot System

Fermentação e degradabilidade ruminal em ovinos alimentados com glicerina bruta oriunda da produção de biodiesel a partir de óleos de fritura

Utilization of Crude Glycerin in Ruminant Diets

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