16 documents found, page 1 of 2
Net requirements of calcium, phosphorus, magnesium, and sulphur for growth of n...
Silva, Ivonete Ferreira da; Rodrigues, Rafael Torres de Souza; Queiroz, Mário Adriano Ávila; Chizzotti, Mario Luiz; Zanetti, Marcus AntonioThe aim of this study was to determine the net requirements of calcium (Ca), phosphorus (P), magnesium (Mg), and sulphur (S) for weight gain of non-descript breed hair lambs (NDBL) of different sex classes reared under Brazilian semiarid conditions. Sixty NDBL (20 intact males, 20 castrated males, and 20 females), with an average initial body weight of 18.1 ± 0.4 kg and average age of 5 months were used. The ma...
Indirect methods for predicting body composition of Boer crossbreds and indigen...
Silva, Tiago Santos; Chizzotti, Mario Luiz; Busato, Karina Costa; Rafael Torres de Souza, Rodrigues; Silva, Ivonete Ferreira daThe aim of this study was to evaluate the correlation and to develop regression equations between the body composition obtained by the comparative slaughter and the neck composition and the ultrasound ribeye area (REAu) in goats from the Brazilian semiarid region. Forty-five intact male goats from three genetic groups were used: 15 Canindé, 15 Moxotó, and 15 F1 Boer x non-descript breed. Animals were randomly a...
Intake, physiological parameters and behavior of Angus and Nellore bulls subjec...
Valente, Ériton Egidio Lisboa; Chizzotti, Mario Luiz; Oliveira, Cristiane Viol Ribeiro de; Galvão, Matheus Castilho; Domingues, Silas SebastiãoDiferenças genéticas entre raças podem determinar a tolerância a temperaturas elevadas, afetar o consumo de alimentos e consequentemente o desempenho de bovinos. Avaliou-se o efeito do índice de temperatura e umidade (ITU) sobre o consumo diurno, noturno e diário de matéria seca (MS), ingestão diária de água, parâmetros fisiológicos e comportamento de tourinhos da raça Nelore (Bos indicus) e da raça Angus (Bos ...
An evaluation of the face mask system based on short-term measurements compared...
Oss, Daniela B.; Marcondes, Marcos I. Marcondes; Machado, Fernanda S.; Pereira, Luiz Gustavo R.; Tomich, Thierry R.; Ribeiro Jr., Gabriel O.The objective of the present study was to compare the short term measurement (30 min/day for 3 days) face mask system (FM), with SF6 tracer and respiration chamber (RC) techniques for measuring CH4 emissions from crossbred (Holstein × Gyr) yearling bulls fed at three intake levels. Data were derived from 17 individuals in a completely randomized design experiment in a repeated measures scheme. Bulls were fed a ...
Energy and protein requirements for Angus and Nellore young bulls
Gomes, Rafael Aparecido; Busato, Karina Costa; Ladeira, Marcio Machado; Johnson, Kristen A.; Galvão, Matheus Castilho; Rodrigues, Aline CastroThirty-two animals with initial body weight (BW) of 380±5.2 kg were used to determine energy and protein requirements of Nellore and Angus young bulls using the comparative slaughter technique. Four animals per breed were slaughtered at beginning of the experiment. The remainder were housed in individual stalls, where eight animals per breed were fed ad libitum a silage/concentrate (SC) diet (300 g/kg of silage...
Net requirements of calcium, magnesium, sodium, phosphorus, and potassium for g...
Valadares Filho, Sebastião de Campos; Chizzotti, Mario Luiz; Tedeschi, Luis Orlindo; Paulino, Pedro Veiga Rodrigues; Paulino, Mário FonsecaA comparative slaughter trial was conducted to assess the net requirements for gain of Ca, P, Na, K and Mg of bulls, steers and heifers of Nellore and Red Angus crossbreds. Twenty seven F1 Nellore and Red Angus crossbred calves (9 steers, 9 bulls, and 9 heifers), averaging 274 kg BW, were used. At the beginning of the trial, three animals from each gender were slaughtered to determine the initial body compositi...
Differences in beef quality between Angus (Bos taurus taurus) and Nellore (Bos ...
Rodrigues, Rafael Torres de Souza; Chizzotti, Mario Luiz; Vital, Camilo Elber; Baracat-Pereira, Maria Cristina; Barros, Edvaldo; Busato, Karina CostaProteins are the major constituents of muscle and are key molecules regulating the metabolic changes during conversion of muscle to meat. Brazil is one of the largest exporters of beef and most Brazilian cattle are composed by zebu (Nellore) genotype. Bos indicus beef is generally leaner and tougher than Bos taurus such as Angus. The aim of this study was to compare the muscle proteomic and phosphoproteomic pro...
Consumo, digestibilidade total e desempenho de novilhos Nelore recebendo dietas...
Chizzotti, Fernanda Helena Martins; Pereira, Odilon Gomes; Valadares Filho, Sebastião de Campos; Garcia, Rasmo; Chizzotti, Mario Luiz; Leão, Maria IgnêzAvaliaram-se o consumo e a digestibilidade total dos nutrientes e o desempenho de novilhos Nelore recebendo dietas contendo silagens de capim-braquiarão e de sorgo como fonte de volumoso nas proporções de 100:0, 67:33, 33:67 e 0:100, com base na matéria seca. Foram utilizados 24 novilhos Nelore, castrados, com peso médio inicial de 380 kg, distribuídos em um delineamento em blocos casualizados, com seis repetiç...
Exigências proteicas de bovinos de corte suplementados a pasto
Sales, Maykel Franklin Lima; Paulino, Mário Fonseca; Valadares Filho, Sebastião de Campos; Chizzotti, Mario Luiz; Barros, Lívia Vieira deObjetivou-se determinar as exigências proteicas de bovinos anelorados, em pastagem com Brachiaria decumbens suplementada com concentrado. Foram utilizados 28 novilhos zebuínos não-castrados com média de 7 meses de idade e 180 kg. Foram abatidos oitos animais-referência para determinação da composição corporal inicial. Os 20 animais restantes foram divididos em cinco lotes de quatro animais, em delineamento inte...
A meta-analysis of dry matter intake in Nellore and Zebu-crosses cattle
Azevêdo, José Augusto Gomes; Valadares Filho, Sebastião de Campos; Pina, Douglas dos Santos; Chizzotti, Mario Luiz; Valadares, Rilene Ferreira DinizObjetivou-se desenvolver e avaliar novas equações para predição do consumo de matéria seca (CMS) em bovinos Nelore e mestiço, utilizando-se meta-análise. Os dados utilizados para estimar os parâmetros foram coletados em experimentos de desempenho independentes com bovinos Nelore e mestiço nas fases de recria e engorda, compilados a partir de 561 unidades experimentais. Antes de propor uma equação para predizer ...