Joadil Gonçalves de Abreu

Casca de soja em dietas para ovinos

The objective was to evaluate the use of four levels of soybean hulls (0.0, 8.0, 16.0 and 24.0%) to replace the corn meal (0.0, 25, 50 and 75%) in the diet of sheep in feedlot. Performance, nutrient digestibilities and feeding costs were evaluated. Twenty Santa Inez breed lambs with 32.96 kg BW were distributed to a completely randomized design with four diets and five replications. The diet was composed of 50% forage (50% of corn silage and 50% of sugar cane) and 50% concentrate. The concentrates were composed of corn meal, soybean meal, mineral mix and urea, so corn meal was gradually replaced by soybean hulls. No effect was observed in the levels of soybean hulls of diet on feed intake of nutrients, except for NDF, which linearly increased according to soybean hulls level in the diet. Soybean hulls levels did not affect digestibility of nutrients, weight gain (0.215 kg/anim.day) and feed conversion ratio of the animals (6.20 kg DM/kg weight gain). Increasing of soybean hulls levels in the diet reduced feeding cost and increased the gross margin from R

Variação aniônica da dieta sobre características ósseas de frangos de corte: resistência à quebra, composição orgânica e mineral

10.89 to R

Recuperação de matéria seca e composição química de silagens de gramíneas do gênero Cynodon submetidas a períodos de pré-emurchecimento

18.63 per animal in the 0 and 75% of replacement levels, respectively. The replacement of up to 75% of corn meal by soybean hulls in the diet does not affect performance of sheep finished in feedlot.

Modelagem estatística para estimação da população de protozoários ruminais em função da relação volumoso: concentrado na dieta e da presença de aditivos

This study was carried out in order to evaluate the bone chemical composition and breaking force resistance of tibiotarsus birds at 21 days of age. The bone percentage of colagenous proteins (CP), non colagenous proteins (NCP) and minerals (calcium, phosphorus, potassium and sodium) was analyzed. A total of 650 commercial male broiler chicks were fed corn and soybean diets. A completely randomized block design with five replications of 26 birds per experimental unit was used. The treatments consisted of the basal ration supplemented with NH4Cl in order to obtain five levels (-50; 0; 50; 100 and 150mEq/kg) of electrolyte balance. The EB level affected the percentages of phosphorus, potassium and sodium, PC and PNC, Ca: P relation and breaking force resistance. The reduction of EB diets at levels below 150mEq/kg will affect negatively the mineralization and bone resistance. The breaking force of tibiotarsus is not correlated with the mineral concentration individually, but correlates negatively with the concentration of collagenous and non-collagenous proteins.

Porcentagem de proteína em suplementos para ovinos mantidos em pasto de capim-aruana na época seca

Objetivou-se avaliar o efeito de periodos de pre-emurchecimento das gramineas Estrela- Africana-Branca [Cynodon plectostachyus (K. Schum.) Pilg.] e Tifton 85 (Cynodon sp.) sobre algumas caracteristicas de suas silagens. Utilizou-se delineamento inteiramente casualizado com dez tratamentos e tres repeticoes. Os tratamentos foram dispostos em esquema fatorial 2x5, sendo duas gramineas (Estrela-Africana-Branca e Tifton 85) e cinco periodos de pre-emurchecimento da forragem (0, 1, 2, 3 e 4 h). As gramineas foram cortadas aos 50 dias de rebrotacao e permaneceram ensiladas por 55 dias em silos experimentais. O pre-emurchecimento promoveu aumento no teor de materia seca da forragem cortada e da silagem das gramineas Tifton 85 e Estrela Africana Branca. Houve diminuicao nos teores de N-amoniacal (N-NH3/N-total) da silagem do capim-estrela-africana-branca, a uma taxa de 1,66 unidade percentual por hora de pre-emurchecimento, mas nao houve alteracao nessa variavel da silagem do capim-tifton 85. A silagem do capim-tifton 85 apresentou maior recuperacao de materia seca, maior teor de FDN e menor teor de proteina bruta do que a silagem do capim-estrela-africana-branca. O pH e o teor de FDA das silagens nao foram influenciados pelo pre-emurchecimento.

Avaliação clínica, laboratorial e ultrassonográfica de felinos com doença do trato urinário inferior

The objective was to develop statistical models to estimate variations in the population of Protozoa in the light of forage: concentrate ratio and the presence or absence of additives in the diet. Excel spreadsheets with data on diet composition, presence and absence of additives and the number of protozoa in the rumen of cattle for work done in Brazil were using. These variables were used and tested to obtain the equation for predicting the profile of the population of protozoa. The models obtained were checked by residual analysis and selection of variables was performed considering the significance level of 5%. It was found for the total count of protozoa and Entodinium that the increased proportion of large positive effect and additive ionophores had a negative effect. The use of statistical models can provide a better understanding of dietary factors on the microbiota of the rumen and on the animal.

Níveis de grão de capim-pé-de-galinha (Eleusine coracana) em dietas para ovinos: consumo e digestibilidade

The aim of this study was to evaluate the forage intake and grazing sheep performance keep on Aruana grass subjected to increasing crude protein (CP) levels in the supplement on dry season. Twenty Santa Ines male lambs were used, with initial body weight of 31.80kg by a completely randomized design with five treatments and four replications. The supplements were provided daily at 1% of body weight, with protein levels of 0, 15, 20, 25 and 30%. The increase of the crude protein levels promoted a squarely effect on dry matter intake (kg/day and % of BW), with maximum estimated values of 1296g and 3.2% of DM in CP levels of 21.48 and 21.89, respectively. The maximum forage intake estimated of 893g/day occurred in CP level de 21.51%. The increased of crude protein level in supplements increased squarely the average daily gain, with a maximum of 104g/day, for the 23% crude protein in the supplement. Thus, the use of the multiple supplements supplied in 1% of body weight with CP levels ranged 21 a 23% is indicated for sheep grazing Aruana grass on dry season.

Cutting ages of elephant grass for chopped hay production1

The Lower Urinary Tract Disease Feline (FLUTD) are frequent in clinical routine of this species is due to various disease processes characterized by hematur...

Nutritional value of sorghum silage of different purposes

The objective was to evaluate in sheep the intake and apparent digestibility of nutrients diets containing finger millet grain (Eleusine coracana). Twenty lambs were used with average initial 18.90 kg BW, in a completely randomized design, with five diets and four replications. The animals were fed isoprotein diets formulated with 0.0, 16.0, 32.5, 48.0 e 67.0% of finger millet grain in substitution of corn meal, with 50:50 forage to concentrate ratio (%DM). The levels of finger millet grain did not affect the intake of DM, TDN and NDF. Dry matter intake was 1.2 kg/anim/d and 3.2% of BW. The coefficient of apparent digestibility of DM and NDT linearly decreased in 0.1425 and 0.1612%, respectively, for each 1% of finger millet grain in the concentrate, which is related to higher levels of NDF and NDFi in this feed. The digestibility coefficients OM and NDF showed maximum values of 57.64 and 53.60% in the levels of 42.36 and 39.56% of finger millet grain in the concentrate. Apparent digestibility of CP and EE were 56.90 and 66.86% respectively. The replacement of corn meal per finger millet grain in the diet of sheep does not affected dry matter intake of nutrients, but reduced the digestibility of DM, OM, total carbohydrates and TDN. Then, this ingredient could replace up to 50% of corn meal in the concentrate for sheep.

Níveis de Caroço de algodão na dieta de cordeiros confinados

1. Manuscript received in Feb./2018 and accepted for publication in Jul./2018 (http://dx.doi.org/10.1590/1983-40632018v4851569). 2. Universidade Federal de Mato Grosso, Faculdade de Agronomia, Medicina Veterinária e Zootecnia, Departamento de Zootecnia e Extensão Rural, Cuiabá, MT, Brasil. E-mail/ORCID: eduardoagritrop@gmail.com/0000-0002-1283-1093, joadil@terra.com.br/0000-0002-1355-5326, daniel.agromatogrosso@gmail.com/0000-0001-7722-6575. 3. Universidade do Estado de Mato Grosso, Departamento de Zootecnia, Pontes de Lacerda, MT, Brasil. E-mail/ORCID: martinez1178@hotmail.com/0000-0001-5323-1775. 4. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Departamento de Zootecnia, Diamantina, MG, Brasil. E-mail/ORCID: thiagogsbz@hotmail.com/0000-0003-1840-7901. With the advancement of the cutting age, there is an increase in the forage yield of elephant grass (Pennisetum purpureum), but there is also a reduction of the protein levels and digestibility of this forage. This study aimed to identify the ideal cutting age of elephant grass forage (BRS Canará cultivar) to chopped hay production. The experimental design was a randomized block, with five treatments (42, 60, 76, 91 and 105 days of growing) and four replicates. Forage agronomical, morphological and chemical characteristics were evaluated. A linear positive effect of the cutting age was observed on plant height, senescent material and yield of the chopped hay. The leaf percentage and leaf:stem ratio were reduced by the advance in the cutting age. There was also a linear positive effect of the cutting ages on indigestible neutral detergent fiber, neutral detergent fiber corrected for ash and protein and neutral detergent insoluble protein, with increases of 17.13 %, 16.63 % and 20.66 %, respectively. The contents of ashes, crude protein, total digestible nutrients and net lactation energy were reduced with the advance in the forage age. From 76 days, the ashes contents reached values below 9.29 % and the crude protein below 7.16 %. In the same cutting age, the chopped hay yield was 12.91 t ha-1. To improve the hay quality and production, the BRS Canará cultivar must be harvest between 60 and 76 days, when the plants are with 1.20-1.50 m of height, leaf:stem ratio of 0.55-0.44, crude protein of 8.29-7.16 % and indigestible neutral detergent fiber of 26.21-29.06 %.