Auctions commercialization of synthetic bulls

Resumo: Em um leilão de touros podem existir diferentes perfis de compradores e interesses, o que pode atribuir preços distintos ao reprodutor. Sendo assim, essa pesquisa teve como objetivo avaliar as características fenotípicas, genotípicas e características do leilão que podem influenciar os diferentes preços de venda de touros Braford e Brangus. Foram utilizados dados de 1.540 touros da raça Braford e de 1.179 da raça Brangus comercializados em leilões no estado do Rio Grande do Sul. Os touros foram avaliados individualmente quanto aos escores de musculosidade, de condição corporal, de frame, e de prepúcio, presença ou ausência de chifres. Foram coletadas as informações sobre o leilão, tais como, o nome, edição do evento, formas de pagamento, entre outras. Demais informações como o peso atual (kg), a circunferência escrotal (cm), as DEP’s (Diferença Esperada na Progênie), os Índices de seleção, e a data de nascimento foram coletadas dos catálogos dos touros. Para obter a influência das variáveis explicativas em toda a distribuição condicional de preços dos touros, foi utilizada uma regressão quantílica, e foram estabelecidos os quantis: 10º, 25º, 50º, 75º e 90º. O preço de venda dos touros foi utilizado como variável dependente. Em geral, os compradores de touros Braford e Brangus valorizam características como idade, peso e circunferência escrotal, com um grau de influência maior em relação às demais características como frame, musculosidade, escore de condição corporal e tamanho de prepúcio. Ademais, o fator leilão influenciou os diferentes preços de venda de touros sintéticos. Em relação aos fatores genéticos avaliados em touros da raça Brangus, estes tiveram pouca ou nenhuma influência no preço de venda. Houve influência positiva apenas no Índice de Desmame no quantil 90º (P<0.10), e no Índice Final nos quantis 50º (P<0.10) e 75º (P<0.05). Conclui-se que os compradores de touros sintéticos em leilões valorizam os touros a partir de características físicas, o que pode não refletir em ganhos genéticos permanentes no rebanho de bovinos.Abstract: In an auction of bulls there may be different profiles of buyers and interests which can assign different prices to the bull. Therefore, this research aim to evaluate the phenotypic, genotypic and auction characteristics that may influence the selling prices of Braford and Brangus bulls. Data from 1,540 Braford and 1,179 Brangus bulls sold at auctions in the State of Rio Grande do Sul were collected. The bulls were evaluated individually, and the following information was considered: body condition score, muscularity, frame, foreskin size, presence or absence of horns, as well as data regarding the auction as name, event edition, forms of payment and others. Information as weight at the time of sale (kg), scrotal circumference (cm), EPDs (Expected Progeny Difference), Selection Indexes, and date of birth was collected from the bull’s catalogs. To obtain the influence of the selected explanatory variables throughout the conditional distribution of bull prices, a quantile regression was used, and quantiles were established: 10th, 25th, 50th, 75th and 90th. The selling prices of bulls were used as a dependent variable. In general, buyers of Braford and Brangus bulls value characteristics such as age, weight and scrotal circumference in relation to other characteristics such as frame, muscularity, body condition score and foreskin size. In addition, the auction factor influenced the different selling prices of synthetic bulls. Regarding the genetic variables of Brangus bulls, these had little or no influence on the selling price. There was a positive influence on the Weaning Index in the 90th quantile (P <0.10), and on the Final Index in the 50th quantile (p <0.10) and 75th (P <0.05). It was concluded that buyers of synthetic bulls at auctions value the bulls from physical characteristics, which may not reflect in permanent genetic gains in the cattle herd

Auctions commercialization of synthetic bulls

Resumo: Em um leilão de touros podem existir diferentes perfis de compradores e interesses, o que pode atribuir preços distintos ao reprodutor. Sendo assim, essa pesquisa teve como objetivo avaliar as características fenotípicas, genotípicas e características do leilão que podem influenciar os diferentes preços de venda de touros Braford e Brangus. Foram utilizados dados de 1.540 touros da raça Braford e de 1.179 da raça Brangus comercializados em leilões no estado do Rio Grande do Sul. Os touros foram avaliados individualmente quanto aos escores de musculosidade, de condição corporal, de frame, e de prepúcio, presença ou ausência de chifres. Foram coletadas as informações sobre o leilão, tais como, o nome, edição do evento, formas de pagamento, entre outras. Demais informações como o peso atual (kg), a circunferência escrotal (cm), as DEP’s (Diferença Esperada na Progênie), os Índices de seleção, e a data de nascimento foram coletadas dos catálogos dos touros. Para obter a influência das variáveis explicativas em toda a distribuição condicional de preços dos touros, foi utilizada uma regressão quantílica, e foram estabelecidos os quantis: 10º, 25º, 50º, 75º e 90º. O preço de venda dos touros foi utilizado como variável dependente. Em geral, os compradores de touros Braford e Brangus valorizam características como idade, peso e circunferência escrotal, com um grau de influência maior em relação às demais características como frame, musculosidade, escore de condição corporal e tamanho de prepúcio. Ademais, o fator leilão influenciou os diferentes preços de venda de touros sintéticos. Em relação aos fatores genéticos avaliados em touros da raça Brangus, estes tiveram pouca ou nenhuma influência no preço de venda. Houve influência positiva apenas no Índice de Desmame no quantil 90º (P<0.10), e no Índice Final nos quantis 50º (P<0.10) e 75º (P<0.05). Conclui-se que os compradores de touros sintéticos em leilões valorizam os touros a partir de características físicas, o que pode não refletir em ganhos genéticos permanentes no rebanho de bovinos.Abstract: In an auction of bulls there may be different profiles of buyers and interests which can assign different prices to the bull. Therefore, this research aim to evaluate the phenotypic, genotypic and auction characteristics that may influence the selling prices of Braford and Brangus bulls. Data from 1,540 Braford and 1,179 Brangus bulls sold at auctions in the State of Rio Grande do Sul were collected. The bulls were evaluated individually, and the following information was considered: body condition score, muscularity, frame, foreskin size, presence or absence of horns, as well as data regarding the auction as name, event edition, forms of payment and others. Information as weight at the time of sale (kg), scrotal circumference (cm), EPDs (Expected Progeny Difference), Selection Indexes, and date of birth was collected from the bull’s catalogs. To obtain the influence of the selected explanatory variables throughout the conditional distribution of bull prices, a quantile regression was used, and quantiles were established: 10th, 25th, 50th, 75th and 90th. The selling prices of bulls were used as a dependent variable. In general, buyers of Braford and Brangus bulls value characteristics such as age, weight and scrotal circumference in relation to other characteristics such as frame, muscularity, body condition score and foreskin size. In addition, the auction factor influenced the different selling prices of synthetic bulls. Regarding the genetic variables of Brangus bulls, these had little or no influence on the selling price. There was a positive influence on the Weaning Index in the 90th quantile (P <0.10), and on the Final Index in the 50th quantile (p <0.10) and 75th (P <0.05). It was concluded that buyers of synthetic bulls at auctions value the bulls from physical characteristics, which may not reflect in permanent genetic gains in the cattle herd

Key factors influencing the sale of bulls in livestock auctions

This research determines which factors most influence the purchase price of bulls in livestock auctions in the State of Rio Grande do Sul, Southern Brazil. Hence, 760 beef bulls sold in eleven different auctions between August and November 2013 were analysed. The data consists of: breed, muscularity (MUSC), frame (FRAME), body condition score (BCS), scrotal circumference (SC) and body weight (BW). Other data such as the animal entry order and the purchase price of the bulls was collected during the auction. A linear generalized model was used to evaluate the interaction of each variable with the purchase price of the bulls. An ANOVA with Tukey post-hoc was used to compare the differences between the categories that influenced the purchase price of bulls and were realized in the software SPSS 20.0. All breeds presented declining prices from the first to the second entry order and increasing purchase prices from the order third to forth. Bulls with large frame received higher purchase prices independent of the auction order, except for the second order of entry, in which medium and small animals were more valued. Angus bulls obtained the highest prices in relation to the breeds Brangus and Hereford. The frame and breed constituted the main phenotypic characteristics that influence in price. In addition, the order of entry of bulls in the ring influence the purchase price

Characteristics of carcass and of non-carcass components of lambs and hoggets fed high-concentrate corn or sorghum diets

ABSTRACT The objective of this study was to evaluate the characteristics of carcass and non-carcass components of lambs and hoggets finished in the feedlot with high-concentrate corn or sorghum grain-based diets. Thirty-two animals were finished, comprising 16 lambs (milk teeth) and 16 hoggets (two teeth), which were distributed in a completely randomized design in a 2 × 2 factorial arrangement (two sheep categories × two grains). For the variables final live weight, live weight at slaughter, hot carcass weight, cold carcass weight, hot carcass yield, cold carcass yield, carcass compactness index, subjective color, loin-eye area, fasting losses, external organs, internal organs, and for the weights, in kilograms, of neck, shoulder, ribs, and leg, there was a significant difference between categories. In the variables studied for the high-concentrate diets, significant differences were found for the ribs, expressed in relative values. Lambs have much higher fasting losses, a greater proportion of internal organs, and lighter-colored meat compared with hoggets. Hot and cold carcass yields, meat subjective color, and percentage of ribs are higher in feedlot-finished lambs and hoggets fed high-concentrate sorghum-based diets compared with those fed corn-based diets

Price determinants of beef bulls sold in livestock auctions

The main objective of this study was to evaluate the effects of phenotypic, genotypic, and auction characteristics that may influence the selling prices of bulls. Data from 1,540 Braford and 1,179 Brangus bulls sold at auctions in the state of Rio Grande do Sul, Brazil, were collected and evaluated individually. Body condition score (BCS), muscularity, frame, foreskin size, presence or absence of horns, and data regarding the auction such as name/venue, event edition, forms of payment, among others, were considered. Information such as weight at the time of sale, scrotal circumference (SC), expected profit differences, selection indexes, and date of birth were collected from the catalogs supplied at the auctions. To obtain the influence of the selected explanatory variables throughout the conditional distribution of bull prices, a quantile regression was used, and the quantiles were established as follows: 10th, 25th, 50th, 75th, and 90th. The buyers of Braford and Brangus bulls valued characteristics such as age, weight, and SC in relation to frame, muscularity, BCS, and foreskin size. In addition, the price behavior at different auctions was positively related to the operation time of the auction in this market and with the reputation of the seller. Regarding genetic variables of Brangus bulls, these had little or no influence on the selling price. There was a positive influence on the weaning index in the 90th quantile and on the final index in the 50th and 75th quantiles. Buyers of synthetic bull breeds at auctions value the phenotypic characteristics of bulls more than they do genetic characteristics, which may not reflect permanent gains in the cattle herd