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Feeding behavior of sheep fed sugarcane silage enriched with detoxified castor bean meal Animal Sciences
Oliveira, Aline Carsoso; Garcia, Rasmo; Almeida, Vitor Visintin Silva de; Oliveira, Hellenn Cardoso; Silva, Robério Rodrigues; Lima Júnior, Dorgival Morais de.
The aim of this study was to evaluate the feeding behavior of sheep fed sugarcane silage enriched with increasing levels of detoxified castor bean meal. Twenty-four non-castrated male Santa Inês sheep with an average body weight of 25.34 kg and four months of age, were distributed in four treatments - 0, 7, 14 and 21% of the natural matter of detoxified castor bean meal in sugarcane silage. There was a linear increase (p < 0.05) in time spent eating and feeding and rumination efficiency (g MS and NDF/h) with the inclusion of castor bean meal in silage. However, there was a linear decreasing response for time spent resting (p < 0.05). Time spent ruminating, number of boluses per day and numbers of chews per day per bolus were not affected (p >...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rumination; Intake; Ethology; Feeding efficiency; Rumination efficiency; Chewing..
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/43848
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Estimation of genetic and phenotypic trends for dairy traits of Gyr and Guzerá breeds Animal Sciences
Rangel, Adriano Henrique do Nascimento; Araújo, Thalita Polyana Monteiro; Lima, Guilherme Ferreira da Costa; Borba, Luiz Henrique Fernandes; Peixoto, Maria Gabriela Campolina Diniz; Lima Júnior, Dorgival Morais de.
 Milk production has high economic importance in dairy cattle production systems, which justifies its inclusion in genetic breeding programs. The objective of this study was to evaluate the genetic and phenotypic trends of dairy traits in Gyr (167 lactations) and Guzerá (148 lactations) breeds in the State of Rio Grande do Norte (RN). Milk, fat and protein production obtained from monthly dairy controls were the traits evaluated. The expected differences in progeny (DEPs) for these traits were estimated using an animal model. From the means of phenotypic values and DEPs, we estimated the genetic and phenotypic trends in linear regressions as a function of the year of calving of the animal. Positive genetic and phenotypic trends were observed for Gyr (26.8...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic progress; Milk production; Selection; Zebu..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36685
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Maniçoba hay or silage replaces Tifton 85 hay in spineless cactus diets for sheep Animal Sciences
Maciel, Michel do Vale; Carvalho, Francisco Fernando Ramos de; Batista, Ângela Maria Vieira; Souza, Evaristo Jorge Oliveira de; Maciel, Laura Priscila Araújo Amaro; Lima Júnior, Dorgival Morais de.
 The aim of this study was to evaluate the replacement of Tifton 85 hay (Cynodon spp.) by maniçoba hay or silage (Manihot glaziovii Muell. Arg) on sheep intake and performance. Twenty-four male Santa Ines animals were used, with initial body weight of 19.77 ± 1.95 kg and average age of 160 days. The animals were distributed in three treatments (Tifton 85 hay-TH, Maniçoba hay-MH and Maniçoba silage-MS), arranged in a randomized blocks design, with 8 replicates per treatment. The feedlot period lasted for 71 days. The means of the variables were tested by Tukey’s test at 5% probability. Sheep fed MH presented higher dry matter intake (p > 0.05) than those fed TH (1.17 kg day-1 vs 1.06 kg day-1). Neutral detergent fiber intake was higher (p > 0.05) for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Euphorbiaceae; Native forage; Nopalea; Sheep performance..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42553
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Fresh or dehydrated spineless cactus in diets for lambs Animal Sciences
Andrade, Solano Felipe Just de; Batista, Ângela Maria Vieira; Carvalho, Francisco Fernando Ramos de; Lucena, Rodrigo Barros de; Andrade, Rafael de Paula Xavier de; Lima Júnior, Dorgival Morais de.
The objective was to evaluate the effect of partial or total replacement of Tifton 85 hay with fresh or dehydrated spineless cactus on performance and body weight components of sheep. Thirty hair lambs, with 19 kg ± 0.35 kg initial weight, were randomly divided into five treatments, namely: Tifton 85 Hay (HA); Tifton 85 Hay + fresh spineless cactus (HAFC); Tifton 85 Hay + dehydrated spineless cactus (HADC); fresh spineless cactus (FC); dehydrated spineless cactus (DC). In addition to the spineless cactus and hay, the complete mixture contained soybean meal, mineral salt and limestone in all treatments. Animals were confined for 75 days and then slaughtered. The weight of body components was recorded. Dry matter intake, total digestible nutrients intake and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cacti; Body weight components; Cactus meal.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29329
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Body weight components of Nellore steers finished in tropical pastures Animal Sciences
Almeida, Vitor Visitin Silva de; Oliveira, Aline Cardoso; Oliveira, Hellenn Cardoso; Silva, Robério Rodrigues; Lima Júnior, Dorgival Morais de.
 The aim of this study was to evaluate the effect of increasing levels of supplementation on body weight components of Nellore cattle grazing in Urochloa brizantha. Twenty-four steers with initial body weight (BW) of 371 ± 14 kg and average age of 26 months were used. Four animals were slaughtered at the beginning of the experiment as a reference and the others were distributed in 4 treatments [0.0% (mineral salt), 0.3%, 0.6% and 0.9% supplement BW]. The slaughter of the experimental group was performed when the animals reached 450 kg and the body weight components were weighed. Data were submitted to analysis of variance and regression. The increase in supplementation level reduced (p < 0.05) pasture dry matter intake, but did not influence (p >...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Urochloa brizantha; Empty body weight; Non-carcass components; Slaughter by-products..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/39005
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Phytase in diets with crude protein levels for commercial layers Animal Sciences
Pereira, Adriana Aparecida; Junqueira, Otto Mack; Griep Junior, Dirceu Neutzling; Lima Júnior, Dorgival Morais de; Sgavioli, Sarah; Morais, Socorro.
 The aim of this study was to evaluate the action of the phytase enzyme in diets formulated with variations in the crude protein content on performance and egg quality of commercial layers. A total of 336 commercial layers were housed at eight birds per cage in a 3 × 2 factorial arrangement with seven replicates. Treatments consisted of four crude-protein levels (17, 15, and 13%) and two enzyme levels (0 and 500 FTU kg-1 diet), distributed in a completely randomized design. Feed intake, egg production, feed conversion per dozen eggs and per kilogram, egg weight and mass, specific gravity, eggshell thickness, and Haugh unit were measured over five 28-day periods. The performance of commercial layers fed the diet containing 13% crude protein worsened,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus; Chicken; Nitrogen; Eggs..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33097
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