AUTHOR=Amaral Júnior João Maria do , Martorano Lucieta Guerreiro , Nahúm Benjamim de Souza , de Castro Vinícius Costa Gomes , Sousa Luciano Fernandes , Rodrigues Thomaz Cyro Guimarães de Carvalho , da Silva Jamile Andréa Rodrigues , da Costa Silva Artur Luiz , Lourenço Júnior José de Brito , Berndt Alexandre , e Silva André Guimarães Maciele 

TITLE=Feed intake, emission of enteric methane and estimates, feed efficiency, and ingestive behavior in buffaloes supplemented with palm kernel cake in the Amazon biome

JOURNAL=Frontiers in Veterinary Science

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2022.1053005

DOI=10.3389/fvets.2022.1053005

ISSN=2297-1769

ABSTRACT=The objective was to evaluate, in two different experiments, the effects of palm kernel pie supplementation on voluntary about consumption, in vivo production of methane and equivalents, feed efficiency and ingestive behavior in buffaloes in the Amazon biome. In experiment 1, to evaluate consumption, methane production and feed efficiency, 20 crossbred females, dry and empty, with a mean age of 34 months and initial body weight of 514 ± 69 kg were used, supplemented with palm kernel pie for 60 days. The supply was calculated in relation to body weight (BW) in four treatments: 0% (control); 0.25%; 0.50% and 1% of palm kernel cake, distributed in a completely randomized design. In experiment 2, to evaluate the ingestive behavior, 24 mixed-breed, dry and non-pregnant buffaloes, supplemented with palm kernel cake, were evaluated in the less rainy season (LR) and the wettest season (WS) of the eastern Amazon, distributed in a completely randomized in the same treatments of experiment 1. The offer of palm kernel pie in the supplementation increased the consumption of dry matter and components, reduced the production of enteric methane, the ratio per kg of meat produced and feed efficiency, and influenced the ingestive behavior (time grazing, rumination and idle) during the day.