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| Ladeira,Márcio Machado; Machado Neto,Otávio Rodrigues; Santarosa,Leonardo de Castro; Chizzotti,Mário Luiz; Oliveira,Dalton Mendes de; Carvalho,José Rodolfo Reis de; Alves,Maria Cecília Lemes. |
| O objetivo deste trabalho foi avaliar o desempenho, as características de carcaça e as suas correlações com as expressões gênicas em tourinhos. Quarenta animais Red Norte foram confinados e distribuídos em delineamento inteiramente casualizado, em arranjo fatorial 2x2, e alimentados com grãos de soja moídos ou gordura protegida, com ou sem inclusão de monensina. As dietas foram formuladas para serem isonitrogenadas, com teores de extrato etéreo semelhante (6,5%), e tiveram silagem de milho como volumoso (40%). O período experimental foi de 84 dias, precedido por 14 dias de adaptação. Foram avaliadas as expressões dos genes PPARA, SREBP1c e SCD1. Animais alimentados com gordura protegida tiveram maior ganho de peso nos primeiros 56 dias de confinamento. O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovinocultura de corte; Gordura protegida; Ionóforos; PPARA; Soja; SREBP1c.. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000900728 |
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| Machado Neto,Otávio Rodrigues; Ladeira,Márcio Machado; Gonçalves,Tarcisio de Moraes; Lopes,Leandro Sâmia; Oliveira,Dalton Mendes de; Bassi,Marcelo Silva. |
| The objective of this research was to evaluate the dry matter intake (DMI) and nutrient consumption in Nellore and Red Norte steer finished in a feedlot and compare the actual and predicted values by NRC (2000), CNCPS 5.0 and BR-CORTE systems. Forty-one animals, 19 Nellore and 22 Red Norte steers, with initial live weight of 361 ± 31 kg and 367 ± 30 kg, respectively, were used. The experiment lasted 84 days, with 28 days for adaptation and 56 experimental days. The animals were weighed at the beginning and at end of each 28-day period after 16 hours fasting. The dry matter intake was estimated by LIPE, chrome oxide and indigestible dry matter (DMi) markers. There were no differences between Nellore and Red Norte DMI when expressed in kg/day (10.66 vs.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crossbreeding; Markers; Nutritional requirements; Zebu breeds. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000200024 |
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| Machado Neto,Otávio Rodrigues; Ladeira,Márcio Machado; Chizzotti,Mário Luiz; Jorge,André Mendes; Oliveira,Dalton Mendes de; Carvalho,José Rodolfo Reis de; Ribeiro,Julimar do Sacramento. |
| The objective of this research was to evaluate average daily gain (ADG), carcass traits, meat tenderness and profitability of keeping cattle fed different oilseeds and vitamin E in feedlot. A total of 40 Red Norte young bulls with initial average body weight of 339±15 kg were utilized. The experimental design was completely randomized in a 2 × 2 factorial arrangement. The experiment lasted 84 days and experimental diets presented soybeans or cottonseeds as lipid sources associated or not to daily supplementation of 2,500 UI vitamin E per animal. The concentrate:roughage ratio was 60:40. Diets had the same amount of nitrogen (13% CP) and ether extract (6.5%). The data were analyzed by means of statistical software SAS 9.1. Neither vitamin supplementation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cottonseed; Ageing; Profitability; Soybean. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700027 |
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| Lopes,Leandro Sâmia; Ladeira,Márcio Machado; Machado Neto,Otávio Rodrigues; Paulino,Pedro Veiga Rodrigues; Chizzotti,Mário Luiz; Ramos,Eduardo Mendes; Oliveira,Dalton Mendes de. |
| Objetivou-se com este trabalho avaliar as características de carcaça e o peso dos cortes comerciais da carcaça de tourinhos Red Norte e Nelore terminados em confinamento. Utilizaram-se 44 animais, sendo 22 Red Norte com peso vivo médio inicial de 367±30 kg e 22 Nelore com peso vivo médio inicial de 361±30 kg. Os animais receberam ração à vontade com relação concentrado:volumoso de 50:50 durante 112 dias, sendo 28 dias de adaptação, e foram abatidos aos 519 e 482 kg para Red Norte e Nelore, respectivamente. A espessura de gordura subcutânea (EGS) e a área de olho-de-lombo (AOL) no músculo longissimus dorsi foram medidas entre a 12ªe 13ª costelas. Observou-se maior rendimento de carcaça nos animais Nelore (57,7 vs 54,7%). Entretanto, não houve diferença no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abate; Área de olho-de-lombo; Frigorífico. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400020 |
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| Bassi,Marcelo Silva; Ladeira,Márcio Machado; Chizzotti,Mário Luiz; Chizzotti,Fernanda Helena Martins; Oliveira,Dalton Mendes de; Machado Neto,Otávio Rodrigues; Carvalho,José Rodolfo Reis de; Nogueira Neto,Álvaro Augusto. |
| Avaliaram-se o consumo, o desempenho e a digestibilidade de dietas contendo diferentes grãos de oleaginosas em novilhos zebuínos em confinamento. Utilizaram-se 30 novilhos zebuínos com peso vivo inicial de 388,0±37,5 kg, distribuídos em delineamento inteiramente casualizado. As dietas foram formuladas com silagem de milho e quatro concentrados: um sem suplementação de lipídeos e três com a inclusão de grão de soja, caroço de algodão ou semente de linhaça. As rações, isonitrogenadas, apresentaram relação concentrado:volumoso 60:40 e foram fornecidas à vontade. Para determinação da digestibilidade aparente total, a produção fecal foi estimada utilizando-se fibra em detergente neutro indigestivel como indicador interno. O menor consumo de matéria seca (7,20... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Confinamento; Extrato etéreo; Lipídeos. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200018 |
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| Machado Neto,Otávio Rodrigues; Ladeira,Márcio Machado; Gonçalves,Tarcisio de Moraes; Lopes,Leandro Sâmia; Oliveira,Dalton Mendes de; Lima,Renato Ribeiro de. |
| The objective of this work was to evaluate average daily gain (ADG) and carcass traits in Nellore and Red Norte steers, finished in feedlots and to evaluate performance predictions by using the systems BR-CORTE, CNCPS 5.0 and NRC (2000). It was used 41 steers: 19 Nelore animals with initial body weight of 361 ± 31 kg and 22 Red Norte animals with initial body weight of 367 ± 30 kg. Adaptation period lasted 28 days. Animal performance evaluation was composed of three 28 day period, totaling 84 days. At the end of each period, animals were weighed after a 16-hour feeding fast. Average gain weight of Red Norte steers was greater than Nellore breed animals (1.43 vs. 1.81 kg/day, respectively). Red Norte animals also presented greater loin eye area (75.41 cm²... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Composite breeds; Markers; Nutritional requirements; Prediction equations; Zebu cattle. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500020 |
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| Ribeiro,Julimar do Sacramento; Gonçalves,Tarcisio de Moraes; Ladeira,Márcio Machado; Campos,Fabrício Rodrigues; Tullio,Rymer Ramiz; Machado Neto,Otávio Rodrigues; Oliveira,Dalton Mendes de; Bassi,Marcelo Silva. |
| The objective of this study was to evaluate the residual feed intake (RFI) and its relation with performance, carcass and meat characteristics of Zebu animals. A total of 40 Zebu steers with initial age of 18 months and initial live weight of 350 kg were confined in feedlot for 112 days. The average daily gain (ADG) and dry matter intake (DMI) were obtained every 14 days. Residual feed intake was determined by the difference between observed and predicted DMI, based on the metabolic weight and the ADG. Animals were classified into the RFI groups: high (>0.5 standard deviation of the mean - least efficient), medium (±0.5 standard deviation of the mean) and low (<0.5 standard deviation of the mean - most efficient). Daily cost with feeding and per... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed efficiency; Meat quality; Performance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600027 |
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| Ferreira,Kethylleen de Carvalho; Furtado,Aline Correia; Flores,Hugo Pereira; Oliveira,Pollyanna Ricartes de Oliveira de; Gonçalves,Augusto Galhardo; Oliveira,Dalton Mendes de. |
| ABSTRACT: This study sought to evaluate the number of bruises on bovine carcasses and their relationship with loading rates in different truck models. Bruising percentages in the hindquarter, forequarter and short rib regions were evaluated. The space occupied on the truck by each animal in m² was defined as the Practiced area, obtained by dividing the body area by the number of males and females transported in straight trucks (10.60 x 2.40 m) and livestock trailers (14.80 x 2.60 m), 240 and 168, and 120 and 93, respectively, and 80 males in a straight truck with trailer configuration (17.50 x 2.60 m). The minimum area occupied by the animals was assessed according to the Farm Animal Welfare Council (FAWC) and Animal Welfare Advisory Committee (AWAC). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal welfare; Loading density; Pre-slaughter handling; Road transport. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000500651 |
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