Comportamento ingestivo de cordeiros lactentes em azevém suplementados com glicerina bruta

Esta pesquisa foi conduzida com o intuito de avaliar o comportamento ingestivo de cordeiros lactentes mantidos em pasto de azevém e suplementados com diferentes percentagens de inclusão de glicerina bruta no comedouro privativo. Foram utilizados 32 cordeiros lactentes distribuídos nos tratamentos: 0, 10, 20 e 30% de glicerina bruta, em substituição ao milho, no suplemento isoproteico (18% de PB) fornecido diariamente em quantidade equivalente a 2% do peso corporal. Não houve efeito (p>0,05) das percentagens de inclusão de glicerina bruta sobre as variáveis observadas no comportamento ingestivo. Contudo, pode-se observar efeito (

Glicerina bruta no suplemento para cordeiros lactentes em pastejo de azevém Crude glycerin in supplement to suckling lambs on ryegrass pasture

Avaliou-se o efeito de níveis de glicerina bruta sobre o consumo de suplemento e o desempenho de cordeiros lactentes mantidos a pasto, além das características quali-quantitativas do pasto de azevém. Foram utilizados 32 cordeiros lactentes distribuídos nos tratamentos: 0, 10, 20 e 30% de glicerina bruta, em substituição ao milho, no suplemento isoproteico (18% PB) fornecido diariamente em quantidade equivalente a 2% do peso corporal. Não houve efeito (P>0,05) dos níveis de glicerina bruta sobre as características qualitativas e quantitativas do pasto, na composição de proteína bruta e fibra detergente neutro e na carga animal suportada pela pastagem, nem no consumo de suplemento, ganho de peso médio diário e o número de dias até o abate dos cordeiros. Níveis de até 30% de glicerina bruta, em substituição ao milho, no suplemento fornecido para cordeiros lactentes pastejando azevém não comprometem o consumo de suplemento, desempenho e período de terminação dos animais.The aim of this study was to evaluate the effect of levels of crude glycerin in the supplement intake and performance of suckling lambs on ryegrass pasture, beyond the qualitative and quantitative characteristics of ryegrass pastures. It was used 32 suckling lambs distributed between the treatments: 0, 10, 20 and 30% of crude glycerin, replacing corn, in the isoproteic supplement (18% CP) offered daily in an amount equivalent to 2% of body weight. There was no effect (P>0.05) of the levels of crude glycerin on the qualitative and quantitative characteristics of pastures, composition of crude protein and neutral detergent fiber, stocking rate supported by ryegrass pasture, neither on supplement intake, average weight gain and number of days to slaughter the lambs. Levels up to 30% of crude glycerin, replacing corn, provided in the supplement to suckling lambs grazing ryegrass didn't compromise the supplement intake, performance and termination period of the animals

Consumo e desempenho produtivo de cordeiros das raças Texel e Ideal terminados em confinamento com dietas contendo diferentes teores de casca de soja

This experiment, conducted in laboratory of sheep-raising of the Universidade Federal de Santa Maria, aimed to evaluate the effect of increasing levels of substitution of sorghum silage by soybean hulls on nutrient intake, weight gain and carcass traits lambs breeds Texel and Ideal, finished in feedlot. A total of 40 male lambs, not castrated, from simple birth, 20 and 20 of the breeds Texel and Ideal, all kept in individual pens. The treatments consisted of two breeds (Texel and Ideal) and four levels of substitution of sorghum silage by soybean hulls, where: 0, 33.5, 66.5 and 100% substitution. The Texel were slaughtered at 32.88 kg and Ideal at 27.51 kg, corresponding to 60% of body weight at maturity of their mothers. There was no interaction between races and levels of soybean hulls tested. The nutrient intake increased linearly, in various forms in which it was expressed with increasing inclusion of soybean hulls in the diets. The daily weight gain was quadratically influenced by the inclusion of soybean hulls in the diet. The maximum weight gain of lambs when feedlot is obtained by replacing sorghum silage by soybean hulls at 56.7%. Texel lambs finished in feedlot have a higher daily weight gain and better feed conversion when compared to the lambs breed Ideal.O presente experimento, conduzido no Laboratório de Ovinocultura da Universidade Federal de Santa Maria, teve como objetivo avaliar o efeito de níveis crescentes de substituição da silagem de sorgo por casca de soja sobre o consumo de nutrientes, o ganho de peso e as características de carcaça de cordeiros das raças Texel e Ideal, terminados em sistema de confinamento. Foram utilizados 40 cordeiros machos, não castrados, oriundos de parto simples, sendo 20 da raça Texel e 20 da raça Ideal, todos mantidos em baias individuais. Os tratamentos foram constituídos por duas raças (Texel e Ideal) e por quatro níveis de substituição de silagem de sorgo por casca de soja, sendo: 0; 33,5; 66,5 e 100% de substituição. Os Texel foram abatidos com 32,88 kg e os Ideal com 27,51 kg, correspondendo a 60% do peso vivo a maturidade das suas mães. Não foi observada interação entre raças e os níveis de casca de soja testados. O consumo de nutrientes aumentou linearmente nas diversas formas em que foi expresso, com o aumento de inclusão de casca de soja nas dietas. O ganho de peso diário foi influenciado de forma quadrática pela inclusão de casca de soja na dieta. O máximo ganho de peso de cordeiros, quando terminados em confinamento, é obtido quando se substitui silagem de sorgo por casca de soja em 56,7%. Cordeiros da raça Texel terminados em sistema de confinamento apresentam maior ganho de peso diário e melhor conversão alimentar quando comparados a cordeiros da raça Ideal

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

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data