Neste estudo, foi avaliado o efeito da condição sexual sobre medidas corporais e características de carcaça, bem como as correlações entre as mesmas, utilizando registros de 20 búfalos Mediterrâneo (BM), sendo 10 castrados e 10 inteiros, provenientes da Fazenda Três Morros, em Casimiro de Abreu, Rio de Janeiro, abatidos com média de 462,05 kg (±28,34). Os animais foram criados em regime de pasto, recebendo sal mineral à vontade. Foram obtidas as seguintes medidas corporais: profundidade torácica (PRT), comprimento da garupa (CG), altura da cernelha (AC), largura da garupa (LG), altura da garupa (AG), distância entre os ísquios (DIS), espessura de coxão (ECX), perímetro torácico (PT) e comprimento dorso lombo (DOR). Os dados foram submetidos à análise de variância e correlação de Pearson. Os animais castrados tiveram maior rendimento de carcaça que os inteiros. Os animais inteiros tiveram maior rendimento de couro que os animais castrados, o que influenciou o menor rendimento de carcaça em relação aos castrados. Não houve diferença para rendimentos de patas, vísceras e cabeça em função da condição sexual. Houve correlação significativa (P<0,05) entre o peso de abate (PA) e as seguintes medidas corporais: PT, PRT, LG, DIS e AC.

ABSTRACT:The domestic dog (Canis familiaris) is the species of greatest morphological diversity among mammals. Seventy-four Labrador Retriever dogs-27 males and 47 females -were used in this experiment. Thirty quantitative biometric characteristics, related to morphology were measured. The objective of this study was to evaluate the morphometric traits of the Labrador Retriever breed to establish descriptive biometric attributes that may show sexual dimorphism through principal component analysis (PCA) and discriminant analysis (DA). The PCA was processed using all the variables and performing a pre-selection of the most correlated variables. The DA was performed for the 30 variables and also for the five most correlated variables with the first component (CP1), in order to classify new individuals. The PCA was able to identify sexual dimorphism in size, with both the 30 original variables as with the preselected variables, the latter optimized the reduction to two principal components. The DA was able to discriminate the two populations, both for 30 variables as for the five variables most correlated with the CP1. The functions with five variables can be used to classify other purebred dogs for sex, with an error of about 6.75%.

We evaluated the live weight (LW), morphological and testicular measures and their correlations in 31 Mediterranean buffaloes at three ages. We used seven animals at 8 months of age (T1), 13 animals at the age of 10 months (T2), and 11 animals at the age of 12 months (T3) coming from a farm of the Coastal Lowlands of Rio de Janeiro. The following morphometric measurements and testes were evaluated: rump height (RH), withers height (WH), rump length (RL), round thickness (RT), scrotal circumference (SC), testicular length (TL), testicular width (TW). Testicular volume (TV) and body mass index (BMI) were also calculated. The testicular form was determined by the ratio between the TW and TL. We found the following means for the variables LW (240.57 ± 18.36; 259.38 ± 28.66; and 331.82 ± 63.23), WH (113.28 ± 2.44; 116.23 ± 4.74; and 121.45 ± 6.95cm), RH (116.07 ± 3.09; 117.54 ± 4.97; and 125.45 ± 6.92 cm), RL (34.86 ± 2.03; 36.35 ± 2.80; and 38.09 ± 3.24 cm), RT (39.07 ± 2.22; 40 ± 2.37; and 42.91 ± 3.97cm), BMI (187.37 ± 11.45; 191.69 ± 14.61; and 222.39 ± 23.57) regarding the treatments T1, T2, and T3, respectively. We found the following means for the variables SC (17.43±1.81; 19.08±1.98; and 22.11±3.25 cm), TL (8.28 ± 0.99; 9.27 ± 1.33; and 10.68 ± 1.47 cm), TW (3.25 ± 0.25; 3.90 ± 0.58; and 4.66 ± 0.80cm), and TV (109. 43 ± 24.93; 198.36 ± 87.08; and 343.83 ± 183.04 cm 3 ) regarding the treatments T1, T2, and T3, respectively. The predominant form in all treatments was long. There was no difference between the T1 and T2 for the studied variables. T3 had higher averages for LW, BMI, RH, SC, TV, and TW. For the variables WH, RL, TL, and RT there was no difference between T2 and T3. There was a correlation between measurements and testicular measures WH, RH, and RL and between SC and TV, TL, and TW. Keywords: body measures; buffaloes; testicular measures. ResumoObjetivou-se com este trabalho analisar o peso vivo (PV), as medidas morfométricas e testiculares e 2 Cienc. anim. bras., Goiânia, v.18, 1-8, e-21599, 2017Morphometric and testicular characteristics of buffalos at differents ages. suas correlações entre si em 31 búfalos Mediterrâneo em três idades. Foram utilizados sete animais de 8 meses (T1), treze de 10 meses (T2) e onze de 12 meses (T3), de uma propriedade da Baixada Litorânea do Rio de Janeiro. As medidas morfométricas e testiculares avaliadas foram: altura da garupa (AG), altura da cernelha (AC), comprimento da garupa (CG), espessura de coxão (ECX), circunferência escrotal (CE), comprimento testicular (CT) e largura testicular (LT). Foram calculados o volume testicular (VT) e o índice de massa corpórea (IMC), e foi determinada a forma testicular pela razão entre a LT e o CT. Foram encontradas as médias para das variáveis PV (240,57 ± 18,36; 259,38±28,66 e 331,82±63,23), AC (113,28 ± 2,44; 116,23 ± 4,74 e 121,45 ± 6,95cm), AG (116,07 ± 3,09; 117,54 ± 4,97 e 125,45 ± 6,92 cm), CG (34,86 ± 2,03; 36,35 ± 2,80 e 38,09 ± 3,24 cm), ECX (39,07 ± 2,22; 40 ± 2,37 e 42,91 ± 3,97cm), IMC (187,37 ± 11,4...