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This study aimed to evaluate the performance and ingestive behavior of growing goats grazing on Tanzania guinea grass and fed diets containing 40% carnauba or tucum fruits. Twenty-one male castrated goats were distributed into three groups, one exclusively on pasture and the other two on pasture and fed diet supplemented at the level of 1.5% body weight (BW) in a completely randomized design. The intake of the supplements was obtained by difference between the amount supplied and the leftovers, with weighing performed every seven days, while pasture intake was determined using titanium dioxide (TiO2) as external indicator. Ingestive behavior was evaluated for three days. The supplement containing carnauba fruit resulted in a greater intake of neutral detergent fiber (0.137 kg NDF/day), with a reduction of 8.61% in the pasture dry matter (DM) intake of goats. Associated with the intake of pasture nutrients, the tucum fruit diet met the protein (0.103 kg CP/day) and energetic (0.547 kg TDN/day) requirements of goats with intake set at 0.124 kg CP/day and 0.572 kg TDN/day, with higher weight gain (0.111 kg/day) and larger loin eye area (12.76 cm2). The supplementation with fruits influenced the grazing behavior of goats, increasing the idle time by 1 h in relation to animals not supplemented. The supplementation of growing goats grazing on Tanzania guinea grass pasture with a diet containing 40% tucum fruit, in the proportion of 1.5% BW, did not meet the nutritional requirements for gain of 150 g/day; however, it met requirements for maintenance and average gain of 111 g/day. Energy supplementation reduces the grazing time of goats; thus, it is necessary to consider the level and formulation of supplements, with the possibility of increasing the stocking rate and productivity per unit area. Made available in DSpace on 2019-06-05T00:31:57Z (GMT). No. of bitstreams: 1 CNPC2019Performance.pdf: 343855 bytes, checksum: cb6042686973e7fe05a76e7c2458b1d9 (MD5) Previous issue date: 2019

The objective of this study was to evaluate the forage-intake process of goats feeding on Massai grass pastures with different heights (40, 50, 60, and 70 cm). The experimental design was completely randomized, with treatments corresponding to four sward heights with two replicates over time and space. Collected data were related to the forage-intake process and the chemical and morphological composition of the pasture. Grazing trials (45 min) were performed with four Anglo-Nubian crossbred goats. Total forage mass intake, bite mass, and intake rate were expressed in relation to animal weight. Pasture density, forage mass, and leaf blade increased as forage height increased.

Avaliou-se o comportamento de ovinos Santa Inês na fase de terminação em sistema silvipastoril de capim-massai com cajueiro com ou sem estilosantes Campo Grande. Foi avaliada a massa de forragem, estrutura do pasto e os tempos de pastejo, ruminação, ócio, deslocamento, taxa de bocado dos animais e a frequência com que cada espécie foi pastejada. Apesar da maior massa de forragem total no pasto com estilosantes, massa de folhas verdes, incluindo a leguminosa, não diferiu entre os tratamentos. A presença da leguminosa modificou a estrutura do dossel, com elevação da altura e da proporção de colmo. O tempo de pastejo e a taxa de bocado não diferiram entre os tratamentos, uma vez que a oferta de folhas verdes foi semelhante entre os tratamentos (6,32% do PV). Apesar de no pasto com estilosantes a leguminosa contribuir com 23,43% da composição botânica, a reduzida relação folha:haste (0,37) não foi suficiente para influenciar no comportamento dos animais. Em sistema silvipastortil com cajueiro, apesar de provocar modificações na estrutura do capim-massai, a presença de estilosantes Campo Grande em 23% do pasto não é suficiente para modificar o comportamento de pastejo de ovinos em terminação.