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SUPLEMENTAÇÃO DE SELÊNIO NA DIETA E QUALIDADE ESPERMÁTICA DO SÊMEN DE TOUROS BR...
Tsuneda,Pedro Paulo; Tsuneda,Bruno Hiroshi; Hatamoto-Zervoudakis,Luciana Keiko; Zervoudakis,Joanis Tilemahos; Marinho,Walter Augusto dos SantosResumo Objetivou-se avaliar a qualidade espermática do sêmen de touros suplementados com selênio (Se) na dieta. Foram utilizados 16 touros Brangus, igualmente distribuídos em grupo controle (GC) e grupo Se (GSe − 0,1mg de Se/kg de MS de dieta). O experimento teve duração de 75 dias, e os animais foram suplementados por 60 dias. Foram realizadas quatro coletas de sêmen durante o período (0, 30, 60 e 75 dias) por...
Kinetic parameters of ruminal degradation in vitro with combinations of exogeno...
Freiria,Lucien Bissi da; Zervoudakis,Joanis Tilemahos; Paula,Nelcino Francisco de; Cabral,Luciano da Sival; Boas,Yasmim Rodrigues VilasSUMMARY This study evaluated the effects of eight combinations of three exogenous enzymes with fibrolytic activity (FIB), amylolytic activity (AMZ), and proteolytic activity (PRO) on the accumulated gas production (PG) and kinetic parameters in simulated fermentations in two diet production systems using the in vitro gas production technique. In experiment 1, ruminal fluid was obtained from two Santa Ines sheep...
Exogenous enzyme on in vitro gas production and ruminal fermentation of diet co...
Freiria,Lucien Bissi da; Zervoudakis,Joanis Tilemahos; Paula,Nelcino Francisco de; Cabral,Luciano da Sival; Tedeschi,Luis OrlindoSUMMARY Exogenous enzyme preparations (fibrolytic activity (FIB), 0, 0.6, 1.2, 1.8, and 2.4 mg/ml liquid volume incubated; amylolytic activity (AMZ), 0, 0.05, 0.10, 0.15, and 0.20 mg/ml liquid volume incubated; proteolytic activity (PRO), 0, 0.05, 0.10, 0.15, and 0.20 mg/ml liquid volume incubated) were incubated in vitro. Their fermentation effects were assessed based on accumulated gas production, kinetic par...
Intake, digestibility, and ruminal parameters of Nellore bulls supplemented wit...
Possamai,Adriano Jorge; Zervoudakis,Joanis Tilemahos; Hatamoto-Zervoudakis,Luciana Keiko; Freiria,Lucien Bissi da; Silva,Pedro Ivo José Lopes da RosaSUMMARY We evaluated the effects of increasing levels of crude glycerin in multiple supplements for grazing beef cattle on intake, nutrient digestibility, pH, ruminal ammoniacal nitrogen, and serum glucose. Five Nellore steers (initial BW of 480 kg [SD 15]), grazing a tropical pasture, were used in a 5 × 5 Latin square design. The treatments used were control (no supplementation; only a mineral mixture ad libit...
Influence of lipid supplementation on milk components and fatty acid profile
Machado,Henrique Valentim Nunes; Pereira,José Carlos; Bettero,Vitor Pereira; Leonel,Fernando de Paula; Araújo,Raphael Pavesi; Moreira,Leonardo MarmoABSTRACT The objective of this study was to evaluate the effects of different lipid sources in diets for lactating cows on milk yield and composition, conjugated linoleic acid (CLA) content, and fatty acid profile in the milk fat. Five primiparous Holstein cows were distributed in a 5 × 5 Latin square design. Treatments were: control (no lipid addition) and four other diets containing different lipids sources -...
Soybean in different forms of processing in the feeding of crossbred cows on br...
Andrade,Vinícius Raimundi; Leonel,Fernando de Paula; Villela,Severino Delmar Junqueira; Carvalho,Juliana do Carmo; Araújo,Raphael PavesiThe objective was to evaluate intake and digestibility of nutrients, as well as milk production and composition of the milk from F1 Holstein × Gyr cows kept on pasture, supplemented with sugarcane and concentrate (28% CP). Five cows with 150±14 lactation days and average milk production of 7.1±2.1 kg/day were distributed in a 5 × 5 Latin square design. The treatments were: soybean meal-based concentrate; soy be...
Slow-release urea in diets for lactating crossbred cows
Santiago,Bruno Tadeu; Villela,Severino Delmar Junqueira; Leonel,Fernando de Paula; Zervoudakis,Joanis Tilemahos; Araújo,Raphael PavesiThe objective of this study was to evaluate the performance of F1 (Holstein × Zebu) cows in lactation according to different levels of substitution of soybean meal for a protein equivalent non-protein nitrogen originated from slow-release urea (SRU). Eight F1 (Holstein × Zebu) cows in the first third of lactation, with an average milk yield of 12.7 kg (±3.1 kg)/day and a live weight of 552 kg (±30 kg), were use...
Whole or ground millet grain provided in two supplementation frequencies for gr...
Benatti,João Marcos Beltrame; Moraes,Eduardo Henrique Bevitori Kling de; Zervoudakis,Joanis Tilemahos; Araújo,Cláudio Vieira de; Cabral,Luciano da SilvaThe objective of this study was to evaluate the processing of millet grain provided at two supplementation frequencies for grazing beef cattle during the dry season on nutritional parameters. Five rumen-cannulated crossbred steers, with 24 to 26 months of age and average body weight of 428.6±26.06 kg, were assigned to a Latin square design (5 × 5) in a 2 × 2 + 1 factorial arrangement, as follows: two forms of m...
Yield, chemical composition, and efficiency of use of nitrogen by Marandu grass
Oliveira,Tadeu Silva de; Leonel,Fernando de Paula; Pereira,José Carlos; Silva,Cássio José da; Baffa,Danielle Ferreira; Zervoudakis,Joanis TilemahosThe objective of this study was to evaluate the effect of five nitrogen doses on the productive and quality characteristics and the use efficiency of Brachiaria brizanthacv. Marandu grass. The treatments consisted of four doses of nitrogen (0, 60, 120, 180 and 240 kg ha-1), distributed through a completely randomized design with four replicates. Samples of the material were collected to analyze productivity var...
Factors affecting feed efficiency in dairy goats
Oliveira,Tadeu Silva de; Leonel,Fernando de Paula; Silva,Cássio José da; Baffa,Danielle Ferreira; Pereira,José Carlos; Zervoudakis,Joanis TilemahosThe objective of this study was to present some factors affecting feed efficiency in dairy goats. To develop our work, individual and average data from performance experiments with lactating goats were used. The following variables were evaluated: gross feed efficiency, adjusted feed efficiency, dry matter intake, milk-yield, 3.5% fat-corrected milk yield, dry matter digestibility, dietary neutral detergent fib...