In vitro gas production and fatty acids biohydrogenation of diets containing different unsaturated fatty acids sources plus crude glycerin

Author(s)

Gomez-Insuasti, Arturo Samuel ^{[1, 2]} ; Granja-Salcedo, Yury Tatiana ^{[1, 3]} ; Castillo Vargas, Julian Andres ^{[1, 4]} ; Messana, Juliana Duarte ^[1] ; de Oliveira Sader, Ana Paula ^[1] ; Berchielli, Telma Teresinha ^[1]

Affiliation

^[1] Sao Paulo State Univ, Sch Agr & Vet Sci FCAV, Dept Anim Sci, UNESP, Jaboticabal, SP - Brazil

^[2] Univ Nacl Colombia, Dept Anim Sci, Leticia, Amazonas - Colombia

^[3] Colombian Corp Agr Res AGROSAVIA, Microbiol & Anim Nutr Trop Res Grp, Res Ctr Nus, San Roque, Antioquia - Colombia

^[4] Fed Rural Univ Amazon, Dept Anim Sci, Parauapebas, Para - Brazil

• Document type: Journal article
• Source: TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES; v. 45, n. 5, p. 944-954, 2021.
• Web of Science Citations: 0

Abstract

An in vitro trial was conducted to evaluate the effects of different unsaturated fatty acids (UFA) sources plus crude glycerin (CGL) on gas production and rumen biohydrogenation (RBH). Incubated diet corresponded to diets containing corn silage (30%) and concentrate (70%) composed of corn, urea, mineral salts, CGL, and different UFA sources as follows: no additional fat (NAF), rumen protected fat (RPF), soybean oil, linoleic acid (LA) or alpha-linolenic acid (LN). Methane concentrations in LA and LN were lower compared to NAF (p < 0.001), but when CH4 was expressed as a proportion of total gas, NAF and RPF showed the greatest values among evaluated UFA sources (p = 0.001). 18:1 t11 concentration showed a faster increase from 0 to 1 h and a slower decrease from 1 to 36 h of incubation, irrespective of UFA source. A higher C18:1 t11 production rate was observed from 1 h to 5 h of incubation, where LA and LN have higher values compared to NAF and RPF diets (p < 0.001). Diets with a high content of LA may be efficient as a nutritional approach to reduce methane production and RBH, resulting in positive effects on vaccenic acid concentrations. (AU)

• FAPESP's process: 17/02034-0 - Degradation and in situ ruminal microbial dynamics of different sources of protein for beef cattle
• Grantee: Yury Tatiana Granja Salcedo
• Support type: Scholarships in Brazil - Post-Doctorate
• FAPESP's process: 12/23949-3 - Microbial biohydrogenation and duodenal flow of fatty acids in the rumen of steers supplemented with lipid sources in diets containing glycerin
• Grantee: Arturo Samuel Gómez Insuasti
• Support type: Scholarships in Brazil - Doctorate