Agricultural and Biological Sciences, Animal Science and Zoology, Aquatic Science
41
Scopus Publications
Scopus Publications
Predicting body weight in fat-type pigs using morphometric measurements Claudia Cristina Paiva Coutinho, Marcos Antonio Delmondes Bomfim, Felipe Barbosa Ribeiro, Daphinne Cardoso Nagib do Nascimento, Yasmim Loiola Franca, et al. Semina Ciencias Agrarias, 2026 Objetivou-se elaborar equações de predição do peso corporal de suíno tipo banha criados de modo extensivo ou semi-extensivo, visando identificar as medidas morfométricas mais relevantes para a sua predição. Foram coletados dados de peso corporal (PC), comprimento de carcaça (CC), circunferência torácica (CT) e de quadril (CQ), altura de cernelha (AC) e de quadril (AG) de 240 animais, sendo 122 machos e 118 fêmeas, com PC entre 4,7 e 68,0 kg, criados em pequenos estabelecimentos rurais com perfil familiar. Para a análises descritivas das variáveis foram calculadas as médias, desvios padrão, coeficientes de variação e valores máximos para cada sexo. Também foram calculados os coeficientes de correlação de Pearson (r), onde todas as medidas morfométricas apresentaram fortes correlações (r ≥ 0,90) com o PC em ambos os sexos. Em seguida os dados foram submetidos ao teste de normalidade (Cramer-von Mises) e os dados de machos e fêmeas foram submetidos separadamente à análise de regressão linear múltipla pelo método Stepwise. Posteriormente as equações geradas de machos e fêmeas foram comparadas pelo teste F, não havendo diferença entre os sexos (P = 0,376). Esse resultado evidenciou que uma equação é suficiente para explicar a variação do peso corporal de machos e fêmeas, sendo: PC: -35,51 + 0,80 × CT + 0,11 × CC (R2 = 0,93; P<0,0001). Para avaliar a aplicabilidade prática da equação, foram usados para estimar o PC, dados de CC e CT de 53 suínos com pesos entre 6,5 e 42,8 kg que não participaram da parametrização da equação. Observou-se uma alta correlação entre valores preditos e observados (r = 0,96), sugerindo boa capacidade preditiva da equação. O resultado evidencia que CC e CT são medidas morfométricas suficientes para predizer o PC de suínos tipo banha de maneira precisa, favorecendo pequenos produtores que não dispõem de balanças em suas propriedades.
Dietary valine requirement of tambaqui (Colossoma macropomum) with different body weights Jakeline Veras da Silva, Felipe Barbosa Ribeiro, Jefferson Costa de Siqueira, Marcos Antonio Delmondes Bomfim, Dáphinne Cardoso Nagib do Nascimento, et al. Ciencia E Agrotecnologia, 2022 Tambaqui (Colossoma macropomum ) is one of the highly produced freshwater fish in Brazilian fish farming. However, its production efficiency associated with the refinement of diet formulations is limited due to a lack of information on nutritional requirements for certain essential amino acids such as valine. This study was designed to estimate the valine requirement of tambaqui having different body weights. A total of 720 juveniles were used in the feed trials. The first trial consisted of 360 fish with an average initial weight of 33.28 ±0.19 g, and the second trial comprised 360 fish (121.19 ±1.29 g). The trials consisted of dose-response experiments with five levels of valine (5.0, 7.0, 9.0, 11.0, and 13.0 g/kg diet) and four replicate tanks per treatment. The control diet was obtained by adding L-valine to the diet containing 5.0 g/kg diet (the first level of valine tested) to ensure it reached the diet containing 7.0 g/kg diet, corresponding to the second level tested. Analysis of variance, Dunnett’s test for comparison with the control diet, and regression analysis were performed. The results showed that the valine intake, weight gain, specific growth rate, and feed conversion ratio were significantly improved by the dietary valine (P < 0.05) in both trials. Dietary levels of valine exerted quadratic effects on body protein, body fat, body protein deposition, and nitrogen retention efficiency of tambaqui with 33 g and 121 g as body fat deposition was affected by the dietary valine level only in tambaqui weighing 33 g. Quadratic regression analysis of body protein deposition data revealed the optimum dietary valine requirement of tambaqui (33.0 g-83.0 g) and (121.0 g-277.0 g) as 11.9 g/kg diet and 9.1 g/kg diet, respectively.
Digestible threonine requirement in diets for tambatinga (♀colossoma macropomum x ♂piaractus brachypomus) fingerlings Marcos Antonio Delmondes Bomfim, Rafael Silva Marchão, Felipe Barbosa Ribeiro, Jefferson Costa de Siqueira, Dayana da Conceição da Costa, et al. Ciencia E Agrotecnologia, 2021 Cross breeding of native fish species is a technique to produce hybrids that can express higher weight gain and feed efficiency compared to the parental species. The digestible threonine requirement in diets for tambatinga fingerlings (Colossoma macropomum ♀ x Piaractus brachypomus ♂) was determined in this study. For this, 700 fingerlings with an average initial weight of 2.39 ±0.02 g and average final weight of 35.96 ±2.03 g were distributed in a completely randomized design consisting of six treatments (0.600, 0.800, 1.000, 1.200, 1.400, and 1.600% digestible threonine) and five replicates per treatment, with 20 fish per experimental unit. Diets were formulated by the “diet dilution” technique using the ideal protein concept. Performance, feed efficiency, body depositions of protein, ash and fat, and nitrogen retention efficiency of the fish were evaluated. The digestible threonine levels that optimized weight gain, specific growth rate, and feed conversion ratio were 1.40, 1.27 and 1.10%, respectively. Body deposition of fat was reduced in a quadratic manner (p<0.01), and the body depositions of protein and ash, together with the efficiency of nitrogen retention, were optimized by the digestible threonine level of 1.20; 1.33, and 0.82%, respectively. The recommended digestible threonine level in the diet for tambatinga fingerlings is 1.20 to 1.40% (0.40 and 0.47% Mcal DE-1) to obtain higher body deposition of protein and weight gain, respectively.
Phosphorus requirement of tambaqui fingerlings THALLES JOSÉ REGO SOUSA, MARCOS ANTONIO DELMONDES BOMFIM, FELIPE BARBOSA RIBEIRO, SYLVIA SANAE TAKISHITA, DAYANA DA CANCEIÇÃO DA COSTA Revista Caatinga, 2019
Phosphorus requirements of tambaqui juveniles Thalles José Rego de Sousa, Marcos Antonio Delmondes Bomfim, Eduardo Arruda Teixeira Lanna, Felipe Barbosa Ribeiro, Jefferson Costa de Siqueira, et al. Semina Ciencias Agrarias, 2018
Lysine requirement for tambaqui juveniles Janayra Cardoso Silva, Marcos Antonio Delmondes Bomfim, Eduardo Arruda Teixeira Lanna, Felipe Barbosa Ribeiro, Jefferson Costa de Siqueira, et al. Semina Ciencias Agrarias, 2018
Dietary total phosphorus levels for Nile tilapia fingerlings Felipe Barbosa Ribeiro, Eduardo Arruda Teixeira Lanna, Marcos Antonio Delmondes Bomfim, Juarez Lopes Donzele, Anderson Saraiva de Freitas, et al. Revista Brasileira De Zootecnia, 2006
