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Trop Anim Health Prod

Title:		"Effects of quebracho tannin extract on intake, digestibility, rumen fermentation, and methane production in crossbred heifers fed low-quality tropical grass"
Author(s):		Pineiro-Vazquez AT; Jimenez-Ferrer G; Alayon-Gamboa JA; Chay-Canul AJ; Ayala-Burgos AJ; Aguilar-Perez CF; Ku-Vera JC;
Address:		"Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, 97300, Merida, Yucatan, Mexico. pineiroiamc@gmail.com. Instituto Tecnologico de Conkal. Division de Estudios de Posgrado e Investigacion. Avenida Tecnologico s/n, 97345, Conkal, Yucatan, Mexico. pineiroiamc@gmail.com. El Colegio de la Frontera Sur (ECOSUR) Carretera Panamericana y Periferico Sur s/n, Barrio Maria Auxiliadora, 29290, San Cristobal de las Casas, Chiapas, Mexico. El Colegio de la Frontera Sur (ECOSUR), Unidad Campeche, Av. Rancho Poligono 2-A, Ciudad Industrial, Lerma, 24500, Campeche, Mexico. Division Academica de Ciencias Agropecuarias, Universidad Juarez Autonoma de Tabasco, Carretera Villahermosa-Teapa, km 25, R/a. La Huasteca 2a. Seccion, Villahermosa, Tabasco, Mexico. Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, 97300, Merida, Yucatan, Mexico"
Journal Title:		Trop Anim Health Prod
Year:		2018
Volume:		20170913
Issue:		1
Page Number:		29 - 36
DOI:		10.1007/s11250-017-1396-3
ISSN/ISBN:		1573-7438 (Electronic) 0049-4747 (Linking)
Abstract:		"The aim of this work was to evaluate the effect of quebracho tannins extract (QTE) on feed intake, dry matter (DM) digestibility, and methane (CH(4)) emissions in cattle fed low-quality Pennisetum purpureum grass. Five heifers (Bos taurus x Bos indicus) with an average live weight (LW) of 295 +/- 19 kg were allotted to five treatments (0, 1, 2, 3, and 4% QTE/kg DM) in a 5 x 5 Latin square design. Intake, digestibility, and total methane emissions (L/day) were recorded for periods of 23 h when cattle were housed in open-circuit respiration chambers. Dry matter intake (DMI), organic matter intake (OMI), dry matter digestibility (DMD), and organic matter digestibility (OMD) were different between treatments with 0 and 4% of QTE/kg DM (P < 0.05). Total volatile fatty acid and the molar proportion of acetate in the rumen was not affected (P < 0.05); however, the molar proportion of propionate increased linearly (P < 0.01) for treatments with 3 and 4% QTE. Total CH(4) production decreased linearly (P < 0.01) as QTE increased in the diet, particularly with 3 and 4% concentration. When expressed as DMI and OMI by CH(4), production (L/kg) was different between treatments with 0 vs 3 and 4% QTE (P < 0.05). It is concluded that the addition of QTE at 2 or 3% of dry matter ration can decrease methane production up to 29 and 41%, respectively, without significantly compromising feed intake and nutrients digestibility"
Keywords:		"Air Pollutants/metabolism Anacardiaceae/*chemistry Animal Feed/analysis Animal Nutritional Physiological Phenomena Animals Cattle Diet/*veterinary Dietary Supplements/analysis Digestion/*drug effects Dose-Response Relationship, Drug Feeding Behavior/*drug;"
Notes:		"MedlinePineiro-Vazquez, A T Jimenez-Ferrer, G Alayon-Gamboa, J A Chay-Canul, A J Ayala-Burgos, A J Aguilar-Perez, C F Ku-Vera, J C eng 2017/09/15 Trop Anim Health Prod. 2018 Jan; 50(1):29-36. doi: 10.1007/s11250-017-1396-3. Epub 2017 Sep 13"