ANDRE MENDES JORGE
@fmvz.unesp.br
Full Profesor of Department of Animal Production and Preventive Veterinary Medicine - DPAMVP / FMVZ
Sao Paulo State University/School of Veterinary Medicine and Animal Science
RESEARCH, TEACHING, or OTHER INTERESTS
Animal Science and Zoology
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Antonio Humberto Hamad Minervino, Domenico Vecchio, André Mendes Jorge, and Selwyn Arlington Headley
Frontiers Media SA
Caroline L. Francisco, André M. Castilhos, Daiane C.M. Silva, Fabiola M. Silva, Paulo R.L. Meirelles, Reinaldo F. Cooke, and André M. Jorge
Elsevier BV
Dayane Cristina Rivaroli, Maria del Mar Campo, Carlos Sañudo, Ana Guerrero, André Mendes Jorge, Ana Carolina Pelaes Vital, Maribel Velandia Valero, Rodolpho Martin do Prado, and Ivanor Nunes do Prado
CSIRO Publishing
Context Natural additives have been studied to increase animal performance and the quality of meat as alternatives to the use of antibiotics. Aims The present work investigated the effects of an essential oil blend (oregano, rosemary, lemon, garlic, eucalyptus, thyme and sweet orange) incorporated into the diet of crossbred heifers on the meat quality. Methods Thirty 12-month-old half-sister crossbred heifers (1/2 Angus vs 1/2 Nellore) with an average weight of 219.8 ± 8.8 kg were allocated in individual pens for 3 months. Three diets were tested: E0.0 (without the essential oil blend); E3.5 (with 3.5 g of the essential oil blend/animal.day); E7.0 (7.0 g of the essential oil blend/animal.day). The fatty acid composition (chemical) and profile of the Longissimus muscle were evaluated. In addition, the effect of aging (1, 7 and 14 days in vacuum packs at 2°C) on the colour, cooking and thawing losses, texture, and lipid oxidation were determined. Key results The essential oil blend did not affect (P > 0.05) the meat. It did not impact on the decrease in shear force, increased lipid oxidation or changes in colour with aging. Conclusions The chemical composition, water holding capacity, shear force, lipid oxidation, and fatty acid profile were not influenced by including the essential oil blend in the diet of heifers. Implications The use of low dosages of an essential oil blend could be applied in the diet of heifers, without affecting meat quality.
Patrícia Aparecida Cardoso da Luz, Cristiana Andrighetto, Gelci Carlos Lupatini, Helena Sampaio Aranha, Gustavo Antunes Trivelin, Gustavo Pavan Mateus, Carolina Toledo Santos, Caroline de Lima Francisco, André Michel Castilhos, and André Mendes Jorge
Elsevier BV
Rui Seabra Ferreira Jr., Daniela Alessandra Fossato da Silva, Natália Perussi Biscola, Maria Márcia Pereira Sartori, Juliana Célia Denadai, André Mendes Jorge, Lucilene Delazari dos Santos, and Benedito Barraviera
FapUNIFESP (SciELO)
Abstract Background: Ruminant feed containing animal byproduct proteins (ABPs) is prohibited in many countries due to its risk of transmitting prion diseases (PD). In most cases the entire herd is sacrificed, which causes great harm to the producer countries by preventing their exportation of ruminant derived-products. Methods: We used stable isotope ratio mass spectrometry (IRMS) of carbon (13C/12C) and nitrogen (15N/14N) to trace the animal protein in the blood of 15 buffaloes (Bubalus bubalis) divided into three experimental groups: 1 - received only vegetable protein (VP) during 117 days; 2 - received animal and vegetable protein (AVP); and 3 - received animal and vegetable protein with animal protein subsequently removed (AVPR). Groups 2 and 3 received diets containing 13.7% bovine meat and bone meal (MBM) added to a vegetable diet (from days 21-117 in the AVP group and until day 47 in the AVPR group, when MBM was removed). Results: On the 36th day, differences were detectable in the feeding profile (p <0.01) among the three experimental groups, which remained for a further 49 days (85th day). The AVPR group showed isotopic rate reversibility on the 110th day by presenting values similar to those in the control group (VP) (p> 0.05), indicating that it took 63 days to eliminate MBM in this group. Total atoms exchange (> 95%) of 13C and 15N was observed through incorporation of the diet into the AVP and AVPR groups. Conclusions: IRMS is an accurate and sensitive technique for tracing the feeding profile of ruminants through blood analysis, thus enabling investigation of ABP use.
Paulo Sérgio Andrade Moreira, Angelo Polizel Neto, Celina Palhari, Felipe Ferreira Faria, Leonardo Virgilio Gregório Guimarães, and André Mendes Jorge
Medicina Veterinaria (UFRPE)
Supplementation with chromium may be an alternative to beef production. The objective was to evaluate the performance and carcass quality of uncastrated Nellore (NEL) and F1 Rubia Gallega × Nellore (RGN) young bulls receiving protein-energy supplementation containing chromium picolinate (CrP). Sixty young bulls (30 NEL and 30 RGN) with an initial weight of 232.40 ± 0.0 kg, average age of 210 days, were distributed in a completely randomized design in a 2 × 2 (genetic groups and supplementation with and without CrP) factorial arrangement. The experimental period was 335 days, including 15 days of adaptation, divided into two stages: post-weaning (210 days) and finishing period (110 days) and slaughtered at 530 days of age. No interaction effect (p>0.05) between genetic group and CrP was detected. During the post-weaning period, the RGN animals showed a higher average daily gain (ADG) than the NEL (0.65 × 0.49 kg/day), while in the finishing stage, ADG was similar (p=0.162) between the groups. Supplementation with CrP elevated (p=0.021) ADG by 50 g/day in the post-weaning stage, but lowered it by 130 g/day in the finishing stage. Genetic group and the use of CrP did not affect (p>0.05) loin-eye area, subcutaneous fat thickness, hot carcass weight, carcass dressing percentage, carcass conformation, or degree of fatness. The RGN young bulls have better performance and higher muscle and bone tissue development rates than the NEL. Supplementation with CrP does not influence the carcass quality, but accelerates muscle development in the post-weaning stage.
A M Castilhos, C L Francisco, R H Branco, S F M Bonilha, M E Z Mercadante, P R L Meirelles, C M Pariz, and A M Jorge
Oxford University Press (OUP)
Evaluation of the body chemical composition of beef cattle can only be measured postmortem and those data cannot be used in real production scenarios to adjust nutritional plans. The objective of this study was to develop multiple linear regression equations from in vivo measurements, such as ultrasound parameters [backfat thickness (uBFT, mm), rump fat thickness (uRF, mm), and ribeye area (uLMA, cm2)], shrunk body weight (SBW, kg), age (AG, d), hip height (HH, m), as well as from postmortem measurements (composition of the 9th to 11th rib section) to predict the empty body and carcass chemical composition for Nellore cattle. Thirty-three young bulls were used (339 ± 36.15 kg and 448 ± 17.78 d for initial weight and age, respectively). Empty body chemical composition (protein, fat, water, and ash in kg) was obtained by combining noncarcass and carcass components. Data were analyzed using the PROC REG procedure of SAS software. Mallows' Cp values were close to the ideal value of number of independent variables in the prediction equations plus one. Equations to predict chemical components of both empty body and carcass using in vivo measurements presented higher R2 values than those determined by postmortem measurements. Chemical composition of the empty body using in vivo measurements was predicted with R2 > 0.73. Equations to predict chemical composition of the carcass from in vivo measurements showed R2 lower (R2< 0.68) than observed for empty body, except for the water (R2 = 0.84). The independent variables SBW, uRF, and AG were sufficient to predict the fat, water, energy components of the empty body, whereas for estimation of protein content the uRF, HH, and SBW were satisfactory. For the calculation of the ash, the SBW variable in the equation was sufficient. Chemical compounds from components of the empty body of Nellore cattle can be calculated by the following equations: protein (kg) = 47.92 + 0.18 × SBW - 1.46 × uRF - 30.72 × HH (R2 = 0.94, RMSPE = 1.79); fat (kg) = 11.33 + 0.16 × SBW + 2.09 × uRF - 0.06 × AG (R2 = 0.74, RMSPE = 4.18); water (kg) = - 34.00 + 0.55 × SBW + 0.10 × AG - 2.34 × uRF (R2 = 0.96, RMSPE = 5.47). In conclusion, the coefficients of determination (for determining the chemical composition of the empty body) of the equations derived from in vivo measures were higher than those of the equations obtained from rib section measurements taken postmortem, and better than coefficients of determination of the equations to predict the chemical composition of the carcass.
M.G.M. Chacur, A. Dantas, E. Oba, F.R. Ruediger, R.A. Oliveira, G.P. Bastos, and A.M. Jorge
FapUNIFESP (SciELO)
RESUMO O conhecimento do desenvolvimento mamário de um rebanho leiteiro é fundamental, pois relaciona-se à eficiência produtiva. Objetivou-se avaliar a associação dos parâmetros térmicos mamários com concentrações hormonais de búfalas em distintos estágios fisiológicos. Foram utilizadas 24 búfalas mestiças Murrah, em quatro grupos (n= 6): grupo 1 (bezerras), grupo 2 (novilhas), grupo 3 (gestantes) e grupo 4 (lactantes). A cada 28 dias, durante 4 meses, realizaram-se exames de termografia digital por infravermelho para verificar temperatura superficial dos corpos mamários craniais (CMCr) e caudais (CMC), das cisternas craniais (CGMCr) e caudais (CGMC) e tetas craniais (TGMCr) e caudais (TGMC). Foi aferida temperatura retal (TR) e colhido sangue para mensuração das concentrações plasmáticas do fator semelhante a insulina tipo-I, insulina (INS), hormônio do crescimento (GH), progesterona (P4) e estradiol. Grupos 1 e 2 apresentaram correlação de TR com CGMCr. No grupo 3, TR correlacionou-se com TGMCr, TGMC e concentrações plasmáticas de P4. No grupo 4, houve correlação de TR com CGMC, TGMCr e concentrações plasmáticas de INS e GH, e de TGMC com concentrações plasmáticas de GH. Nos quatro grupos, CGMCr correlacionou-se com CMCr e TGMCr, semelhantemente ao observado na porção caudal. Variações térmicas mamárias refletiram alterações fisiológicas aguardadas nos períodos avaliados.
A. Guerrero, D. C. Rivaroli, C. Sañudo, M. M. Campo, M. V. Valero, A. M. Jorge, and I. N. Prado
CSIRO Publishing
Essential oils are natural extracts from plants which can be included in cattle diets as an alternative to additives, such as ionophores, to improve the shelf life of meat. The aim of this study was to evaluate the sensory acceptability of meat from 57 crossbred (1/2 Angus–1/2 Nellore) animals of different sexes [heifers n = 30, and young bulls n = 27], finished in feedlot with isoenergetic and isonitrogenous diets, which differed in the level of supplementation (0.0, 3.5 or 7.0 g/animal/day) with a commercial mix of essential oils (Mixoil®) from seven plants: oregano, garlic, lemon, rosemary, thyme, eucalyptus and sweet orange. The Longissimus thoracis muscle, aged for 24 h, was evaluated by 120 consumers who scored tenderness acceptability, flavour acceptability and overall acceptability using a hedonic 9-point scale. The inclusion of essential oils affected tenderness acceptability and flavour acceptability (P ≤ 0.01), with a tendency (P < 0.10) for overall acceptability. Meat from heifers was more appreciated by consumers than that from young bulls in all attributes (P ≤ 0.001), however, different groups of consumers had different preferences. The inclusion of a mix of essential oils in beef diets was well accepted by consumers, and could improve the acceptability of meat from young bulls, when is added at a concentration of 3.5 g/animal/day during the last 4 months of fattening.
Patrícia Aparecida Cardoso da Luz, André Mendes Jorge, Caroline De Lima Francisco, Juliana Lolli Malagoli de Mello, Carolina Toledo Santos, and Cristiana Andrighetto
Universidade Estadual de Maringa
The aim of this study was to evaluate the effects of different aging times on the meat characteristics from young Murrah buffaloes slaughtered at 20–24 months of age (experiment I; n=10) and Murrah buffalo heifers slaughtered at 32-36 months of age (experiment II; n=10), with the purpose of determining the best aging time to tenderize meat from both experiments. Samples of the longissimus thoracis muscle from buffaloes slaughtered at each age were aged for 7, 14, and 21 days (0±1°C). After this period, analysis of cholesterol, pH, cooking loss, shear force, myofibrillar fragmentation index, meat color, and fatty acid profile was performed. Aging greatly improved the tenderness (p < 0.05) but caused a change in color (p < 0.05), which, even without difference between the treatments for subjective perception of the color (ΔE; p > 0.05), was considered very noticeable to the human eye. Furthermore, aging reduced the polyunsaturated fatty acids (p <0.05) and did not affect the levels of cholesterol (p > 0.05) in the meat of young buffalo and buffalo heifers of advanced age. Based on the evaluated meat characteristics, concludes that seven days of aging are sufficient for older buffalo heifers, but 21 days of aging are required for the younger male group.
Dayane Cristina Rivaroli, Ana Guerrero, Maribel Velandia Valero, Fernando Zawadzki, Carlos Emanuel Eiras, Maria del Mar Campo, Carlos Sañudo, André Mendes Jorge, and Ivanor Nunes do Prado
Elsevier BV
Vania Luzia Fournou de Lima, Carlos Ducatti, Paulo Roberto de Lima Meirelles, Luciane Do Carmo Seraphim, Marco Aurélio Factori, André Mendes Jorge, Roberto Lyra Villas Bôas, and Marina Gabriela Berchiol da Silva
Universidade Estadual de Londrina
This study aimed to evaluate and quantify the methodology of stable isotopes, 15N values for the organic fertilizer (chicken manure) and inorganic (urea). In addition to evaluating the incorporation rate, chemical half-life and analysis thereof, for possible traceability through the pasture fertilized with different sources of N. The technique of employment with use of tracer stable isotope 15N possible to estimate the changes in the N soil, even in the face of the various changes that take place concurrently. The methodology determines the path of both N isotopes (15N and 14N), providing information about the system and estimating N transformation rates The experimental work was conducted at the Faculty of Veterinary Medicine and Animal Science, UNESP Botucatu. An area of 576m2 was used for the parcels, which were divided between the 3 treatments with 4 repetitions each: T1 - control treatment without fertilization; T2 - fertilization with urea and T3 - organic fertilizer with poultry litter. The grass was cut every 15 days, three months after fertilization, for a total of four periods of grazing exclusion. Experimental samples were analyzed for the isotopic nitrogen and crude protein, neutral detergent fiber, acid detergent fiber, cellulose, hemicellulose and lignin composition. Degradation of poultry litter, the sand bag method was analyzed by linear regression. (delta-N-15) forage, fodder percentage of nitrogen, percentage of total nitrogen sheet, (delta-N-15) on the sheet, and (delta-N-15) at the helm were different between treatments. To this end collection, difference was observed for% Total Nitrogen, % Total N in sheet, % Total N in the trunk and% Total N at the helm. The crude protein analysis revealed significant differences between treatments, while the crude protein and lignin differ according to time after fertilization. The technique of N stable isotope effectively distinguish the composition of organic and inorganic fertilizers in deferred grazing pastures of Urochloa brizantha cv. Marandu. Forage quality was not influenced by the source of N.
C. L. Francisco, F. D. Resende, J. M. B. Benatti, A. M. Castilhos, R. F. Cooke, and A. M. Jorge
Oxford University Press (OUP)
Forty-four feedlot-finished Nellore cattle were used to evaluate the impacts of temperament on performance, meat and carcass traits, and serum concentrations of hormones, proteins, enzymes, and immunoglobulins. Individual temperament was assessed at feedlot entry (d 0), 67 d, and 109 d, utilizing chute score (CS; 5-point scale) and exit velocity (EV). Temperament scores were calculated averaging CS and EV scores, and cattle were subsequently classified according to their temperament (an average of ≤3 = adequate temperament [ADQ], or an average of >3 = excitable temperament [EXC]). At the end of the experiment (d 109), all 44 animals were slaughtered, and 16 were randomly selected for final empty body weight (EBW) estimation. Blood samples were collected at 0, 67, and 109 d and analyzed for serum variables (cortisol, insulin, haptoglobin, total protein, lactate, creatinine kinase [CK], lactate dehydrogenase [LDH], and IgA). The incidence of carcass bruises was verified immediately after the hide was removed. Carcass pH was obtained at 0 and 24 h postmortem. Samples of the LM were collected for meat quality analyses. Cattle classified as ADQ had greater final BW ( = 0.03), final EBW ( = 0.02), metabolic weight ( = 0.03), ADG ( = 0.02), feed efficiency ( = 0.03), HCW ( = 0.02), cold carcass weight ( = 0.02), and LM area ( < 0.01) compared to that of the EXC cohorts. Cattle classified as ADQ tended to have a lower percentage of cooler shrink ( = 0.06) compared to that of EXC cattle. No temperament effects were detected for initial BW ( = 0.70), DMI ( = 0.14), cold dressing percentage ( = 0.98), or backfat thickness ( = 0.29). Cattle classified as ADQ had greater marbling ( = 0.02) and meat fat content ( = 0.05) compared with that of EXC cattle. No temperament effects ( > 0.05) were detected for unsaturated fatty acid (UFA), SFA, MUFA, PUFA, and n-6:n-3 ratio. For blood parameters, EXC cattle had greater values of cortisol ( = 0.04) and haptoglobin ( = 0.05) and tended ( = 0.06) to have reduced serum insulin concentration compared with ADQ cattle. Both temperament groups had similar serum concentrations of IgA ( = 0.25) and total protein ( = 0.84). Cattle classified as EXC presented greater amounts ( = 0.05) of carcass bruises. In conclusion, an EXC temperament impaired feedlot performance, carcass characteristics, and meat quality traits in finishing Nellore cattle.
C.C. Coutinho, M.E.Z. Mercadante, A.M. Jorge, C.C.P. Paz, L. El Faro, and F.M. Monteiro
Genetics and Molecular Research
The effect of selection for postweaning weight was evaluated within the growth curve parameters for both growth and carcass traits. Records of 2404 Nellore animals from three selection lines were analyzed: two selection lines for high postweaning weight, selection (NeS) and traditional (NeT); and a control line (NeC) in which animals were selected for postweaning weight close to the average. Body weight (BW), hip height (HH), rib eye area (REA), back fat thickness (BFT), and rump fat thickness (RFT) were measured and records collected from animals 8 to 20 (males) and 11 to 26 (females) months of age. The parameters A (asymptotic value) and k (growth rate) were estimated using the nonlinear model procedure of the Statistical Analysis System program, which included fixed effect of line (NeS, NeT, and NeC) in the model, with the objective to evaluate differences in the estimated parameters between lines. Selected animals (NeS and NeT) showed higher growth rates than control line animals (NeC) for all traits. Line effect on curves parameters was significant (P < 0.001) for BW, HH, and REA in males, and for BFT and RFT in females. Selection for postweaning weight was effective in altering growth curves, resulting in animals with higher growth potential.
Fábio Garcia Ribeiro, André Mendes Jorge, Caroline de Lima Francisco, André Michel de Castilhos, Cristiano Magalhães Pariz, and Maurícia Brandão da Silva
FapUNIFESP (SciELO)
Resumo:O objetivo deste trabalho foi avaliar o efeito da inclusão de simbióticos e de monensina sódica em dietas sobre o desempenho, as características de carcaça e a qualidade da carne de novilhas mestiças Angus em confinamento. Utilizou-se um delineamento inteiramente casualizado, com 64 animais distribuídos em quatro tratamentos: controle, dieta sem suplementação; dieta suplementada com simbióticos; dieta com monensina sódica; e dieta com simbióticos e monensina sódica. A dieta com monensina sódica e a dieta com simbióticos e monensina sódica proporcionaram maior ganho de peso médio diário e ganho de peso vivo total, além de melhorar a eficiência alimentar e biológica dos animais em comparação ao controle. A dieta de simbióticos, a de monensina e a de simbióticos com monensina sódica ocasionaram a redução da ingestão de matéria seca, elevaram o peso do filé da costela e os teores de lipídeos totais na carne. A dieta com simbióticos proporcionou a redução da força de cisalhamento da carne em relação ao controle. A inclusão de simbióticos, com ou sem monensina sódica, na dieta de novilhas mestiças Angus confinadas, beneficia o desempenho animal e algumas características físico-químicas da carne.
PS Andrade, , FJ Lourenço, A Polizel, L Rigatto, A Mendes, O Rodrigues, , , ,et al.
Universidad de Antioquia
Summary Background: Angus breed s trains (Black and Red) perform differently under tropical conditions. Objective: to evaluate differences among F1 Nellore x Aberdeen Angus and F1 Nellore x Red Angus regarding productive performance and carcass traits under tropical conditions. Methods: forty-one heifers were used to assess the effect of both genetic groups on productive performance and carcass traits. The performance parameters evaluated were final live body weight and average daily gain. The carcass traits were: 1) hot and cold carcass weight and cold carcass dressing percentage, 2) carcass conformation and fatting (both ranging from 1 to 5), 3) back fat thickness, 4) rib eye area, 5) cutability, and 6) total usable meat, and commercial cut yield. Animals were divided in two groups and fed Megathyrsus maximum grass in three pens for 28 days. After this period, animals were relocated in a feedlot system for 84 days, and weighed at the beginning and at the end. All data were subjected to analysis of variance with initial live weight as a covariate. Results: differences were found between groups for productive performance and carcass traits such as back fat, and rib eye area. However, no difference was observed for conformation, fatting, ease of cutability, total usable meat, and Brazilian commercial cuts. Conclusion: F1 Nellore x Aberdeen Angus heifers had increased growth performance and carcass traits under tropical conditions. Keywords: growth, hair coat, precocity, tropic , ultraviolet radiation, weight gain. Resumen Antecedentes: las variedades de la raza Angus (Negro o Rojo) pueden exhibir un rendimiento diferente en condiciones tropicales. Objetivo: el objetivo fue evaluar las diferencias entre los grupos geneticos de bovinos Nelore x Angus F1 y F1 Nelore x Angus Colorado en cuanto al rendimiento de la canal y las caracteristicas productivas en condiciones tropicales. Metodos: se utilizaron 41 novillas para evaluar los grupos geneticos con respecto al crecimiento y caracteristicas de la canal. Como parametros de rendimiento productivo se evaluo el peso vivo final y la ganancia diaria, y para caracteristicas de la canal: 1) peso en canal caliente, fria y rendimiento, 2) conformacion de la canal, 3) el espesor de grasa, 4) area del ojo del lomo, 5) cortabilidad y 6) carne total utilizable y cortes comerciales brasilenos. Los animales fueron divididos en dos grupos y alimentados con pasto Megathyrsus maximum bajo pastoreo rotacional en tres corrales durante 28 dias. Luego fueron trasladados 84 dias a un sistema de confinamiento, siendo pesados al inicio y al final del tratamiento. Todos los datos fueron sometidos a analisis de varianza con el peso vivo inicial como covariable. Resultados: hubo diferencias en el rendimiento productivo y caracteristicas de la canal, en espesor de grasa dorsal y area del ojo del lomo. Sin embargo, no hubo diferencia en la conformacion, el acabado, cortabilidad, la carne utilizable total y de los cortes brasilenos. Conclusion: novillas F1 Nellore x Aberdeen Angus presentaron mayor rendimiento y caracteristicas de la canal de crecimiento en condiciones tropicales. Palabras clave: aumento de peso, crecimiento, pelaje, precocidad, radiacion ultravioleta, tropico. Resumo Antecedentes: animais da raca Angus podem apresentar desempenho diferente de acordo com a linha (Red Angus ou Black Angus). Objetivo: objetivou avaliar os grupos geneticos bovinos F1 Nelore x Angus Aberdeen e Nelore x Red Angus quanto ao desempenho produtivo e caracteristicas de carcaca em condicoes tropicais. Metodos: foram utilizadas quarenta e uma novilhas para avaliar o grupo genetico em relacao ao desempenho de crescimento e caracteristicas de carcaca. Como parâmetros de desempenho produtivo foram avaliados o peso vivo final e ganho diario e para caracteristicas de carcaca: 1) peso de carcaca quente, fria e rendimento, 2) conformacao da carcaca e de acabamento, 3) espessura de gordura, 4) area de olho de lombo, 5) retalhabilidade e 6) porcao comestivel total e rendimento de cortes comerciais brasileiros. Os animais foram divididos em dois grupos e alimentados em pastagem de Megathyrsus maximum sob pastejo rotacionado em tres piquetes por 28 dias e posteriomente confinados por 84 dias, onde foram pesados no inicio e no final do tratamento. Todos os dados foram submetidos a analise de variância com o peso vivo inicial como covariavel. Resultados: houve diferencas em desempenho produtivo e caracteristicas de carcaca, a espessura de gordura subcutânea e a area de olho de lombo. No entanto, nao houve diferenca para conformacao, acabamento, cutabilidade e rendimento dos cortes brasileiros. Conclusao: novilhas Nelore x Angus Aberdeen apresentaram melhores caracterististicas de carcaca e desempenho. Palavra chave: cor do pelame, crescimento, ganho de peso, precocidade, radiacao ultravioleta, tropico.
R.S.B. Pinheiro, A.M. Jorge, G.C. Miranda-de la Lama, and H.B.A. Souza
FapUNIFESP (SciELO)
Objetivou-se com este estudo conhecer o comportamento de ovelhas da raça Santa Inês em diferentes estágios fisiológicos durante o manejo pré-abate, assim como a perda de peso corporal, valores de hematócrito do sangue das mesmas e a qualidade da carne. Utilizaram-se 21 ovelhas de descarte, que foram distribuídas nos respectivos tratamentos: T1 = ovelhas que permaneceram por 60 dias em lactação com seus respectivos cordeiros e abatidas um dia após o desmame dos mesmos; T2 = ovelhas que permaneceram por 60 dias em lactação com seus respectivos cordeiros e mais um período aproximado de 30 dias sem os cordeiros e posteriormente foram abatidas; e T3 = ovelhas que permaneceram por 60 dias em confinamento e que não pariram durante o ano. O peso das ovelhas após o transporte foi menor para as do tratamento 1 em comparação às do tratamento 2. Os valores de hematócrito no sangue das ovelhas antes do transporte, após o mesmo e após o jejum dos animais no curral de espera não diferiram entre si, com valor médio de 58,50%. Concluiu-se que a qualidade da carne proveniente de ovelhas de descarte em diferentes estágios fisiológicos não é alterada pelo manejo pré-abate, quando realizado de maneira correta (evitando o estresse animal), quanto ao pH da carne.
Rafael Silvio Bonilha Pinheiro, André Mendes Jorge, Cristiano Magalhães Pariz, and Marcos Jun Iti Yokoo
Universidade Estadual de Londrina
Some measurements carried out by ultrasound in the Longissimus dorsi between the 12th and 13th ribs were monitored, aiming to know the changes in the muscular and adipose tissues in that muscle and the connections of these measurements with body weight (BW) and body condition score (BCS) of ewes in different stages (physiological stages and experimental periods). Ewes were arranged into the following treatments: EL = ewes which remained in lactation for 60 days with their respective lambs and slaughtered one day after weaning; EWL = ewes which remained in lactation for 60 days with their respective lambs and one more period of approximately 30 days without the lambs and slaughtered afterwards; and ENC = ewes which did not give birth during the year. Ultrasound measurements were carried out in the beginning, middle and end of the experiment (every 21 days), as well as BW and BCS of ewes. There was not interaction between periods and experimental treatments for BW and BCS of ewes. It was concluded that the use of ultrasound allows monitoring changes that occur with the subcutaneous fat and Longissimus dorsi of ewes. Those changes occur more frequently in intervals of 42 days (muscular and adipose tissues).