Nesta pesquisa, obtiveram-se dados sobre os aspectos microscópicos das estruturas vasculares que compõem o funículo umbilical de bovinos azebuados. Para a realização da pesquisa utilizaram-se funículos umbilicais provenientes de 30 fetos (13 machos e 17 fêmeas).Tanto as artérias quanto as veias apresentavam, na constituição das suas paredes, um repregueamento da túnica íntima que se mostrava bastante  característico nas artérias. A túnica média das artérias e veias continha uma musculatura bem desenvolvida, fato que caracterizava esses vasos do tipo muscular. A luz dos vasos arteriais e venosos mostrava-se inicialmente (porção justa-fetal) quase obliterada e aumentava à medida que se aproximava da porção justa-placentária do funículo umbilical. A quantidade de fibras reticulares, elásticas e colágenas na parede dos vasos umbilicais foi comparada mediante técnicas histológicas específicas. Alguns aspectos inerentes ao dueto alantóide foram também observados.<br /> | In this study information about the microscopic aspects of the structures that form the funiculus umbilicalis of zebu like cattle was collected. For this purpose, it was used funiculus umbilicalis of 30 fetuses (13 males, 17 females). Both arteries and veins showed wrinkles in the intima layer in their wall constitution, what was more characteristic in the arteries. The medium<br />layer of arteries and veins showed well developed muscle, characterizing these vessels as muscular type ones. At the initial portion (juxta-fetal portion) the lumen of arteries and veins was almost obliterated, but it enlarged as they got closer to the juxta-placentaria portion of the funiculus umbilicalis. The amount of reticular, elastic and collagen fibers on the vessel wall was compared by the use of specific histological techniques. Some aspects about the alantoid duct were also noticed.<br />

<p>Avaliou-se o hemograma e a morfologia celular em amostras de sangue periférico obtidas de 10 peixes da espécie Oreochromis niloticus. Parte das mesmas foi utilizada para o estudo da hematimetria, isto é,  contagem de eritrócitos (x = 2,35 x 106/mm3 ± 0,12), taxa de hemoglobina, (x = 7,04 g/dL ± 0,38), hematócrito (x = 27,85% ± 1,62), HCM (x = 30,31pg ± 1,64), VCM (x = 118,6p3 ± 3,53), CHCM (x = 25,78% ± 1,72), contagem global de leucócitos (x = 16,08 x 103/mm3 ± 1,28), contagem de trombócitos (x = 61,69 x 103/mm3 ± 5,96), sendo a avaliação da morfologia das células do sangue reallizada através do estudo de extensões sangüíneas submetidas à coloração de Wright. Os eritrócitos e trombócitos nucleados apresentaram-se elípticos; neutrófilos e eosinófilos esféricos de tamanho variável, com o núcleo também esférico, apresentaram citoplasmas abundantes, ligeiramente basófilo e altamente acidófilo, respectivamente. Não foram vistas as formas polimorfonucleares dessas células. Os basófilos apresentaram núcleo esférico e granuiações metacromáticas. Os monócitos e os linfócitos assemelharam-se morfologicamente aos dos mamíferos.</p> | Hemogram and cell morphology of peripheric blood samples obtained from 10 Oreochromis niloticus fishes have been evaluated. Some of these samples have been used in the accomplishment of hematimetry: eritrocytes count (x = 2.35 x 106/mm3 ±0.12), hemoblobin rate ( x = 7.04 g/dL ± 0.38), hematocrit (x = 27.85% ± 1.62), MHC (x = 30.31 pg ± 1.64), MCV (x = 118.6 p3 ± 3.53), MCHC (x = 25.78% ± 1.72), total leucocytes count (x = 16.08 x 103/mm3 ± 1.28), trombocytes count ( x = 61.69 x 103/mm3 ± 5.96). Morphological evaluation of blood cells was performed by means blood smears extension submitted to Wright staining. Both nucleated eritrocytes and trombocytes presented an elliptical shape; neutrophiles and eosinophiles were spherical with spherical nucleus presenting different sizes, they also showed profuse citoplasms which were slightly basophilic and highly acidophilous, respectively. Polimorphonuclear shapes in these cells have not been verified. Basophiles have shown spherical nucleus and metachromic granulations. Monocytes as well as lymphocytes resembled morphologically those of mammals.<br />

Apparent digestibility of soybean meal/corn and coast cross hay was studied with different ratios of hay and concentrate: A - 40%; B = 60%; C = 80% and D = 100% hay. Twelve male sheep were kept in metabolic cages with bags for total faeces collection. At the adjustment and collection period animals received 80% of ad libitum intake, observed previously. Average digestion coefficients were: DM 68,11%, 63,92%, 59,22% and 64,60%; CP 61,01%, 66,04%, 73,60% and 72,92%; CF 52,56%, 53,66%, 56,22% and 57,19%; EE 71,49%, 59,21%, 57,90% and 57,98%; ENN 74,40%, 69,83%, 58,56% and 70,40%, respectively, for A, B, C and D treatments. Results forTDN were A= 62,15%, B= 57,72%, C= 52,04% and D= 55,77%. DM and NNE digestibility presented quadratic regressions (p &lt; 0,01). TDN values presented no significant differences among treatments. Digestibilities of CP and CF increased linearly, with higher levels of roughage in the diets.<br /> | Avaliou-se a digestibilidade (aparente) de dietas com diferentes proporções de volumoso (feno de coastcross) e concentrado. O ensaio constou de quatro tratamentos: A= 40%, B= 60%, C= 80% e D= 100% de feno nas rações. Foram utilizados 12 carneiros, machos, castrados, que permaneceram em gaiolas metabólicas, arreados com bolsas para colheita total das fezes. O período de colheita durou 5 dias, durante os quais o consumo foi reduzido para 80% do obtido ad libitum. Os coeficientes médios de digestibilidade para os quatro tratamentos (A, B, C e D) foram: matéria seca (MS) - 68,11%, 63,92%, 59,22% e 64,60%; proteína bruta (PB) - 61,01%, 66,04%, 73,60% e 72,92%; fibra bruta (FB) - 52,56%, 53,66%, 56,22% e 57,19%; extrato não nitrogenado (ENN) - 74,40%, 69,63%, 58,56% e 70,40%; extrato etéreo (EE) - 71,49%, 59,21%, 57,90% e 57,98%, respectivamente. Os nutrientes digestíveis totais (NDT) foram: A= 62,15%, B= 57,72%, C= 52,04% e D=55,77%. As digestibilidades da matéria seca (MS) e do extrato não nitrogenado (ENN) apresentaram comportamento quadrático (p &lt; 0,01). Os valores dos nutrientes digestíveis totais (NDT) não apresentaram diferenças significativas. Houve aumento linear (p &lt; 0,01) na digestibilidade da proteína bruta (PB) e da fibra bruta (FB) com o aumento do volumoso na ração.

Mediante esta pesquisa, obtivemos dados sobre os aspectos morfológicos da disposição e da constituição das artérias e das veias do funículo umbilical em bovinos azebuados. Utilizamos para isto 30 fetos (13 machos e 17 fêmeas), com idades variando de 2 a 7 meses, cujos vasos umbilicais foram injetados com solução de látex-Neoprene 650 corada e posteriormente dissecados. O comprimento do funículo umbilical variou de 3 a 43 cm em fetos de 2 a 7 meses de idade. Quatro vasos umbilicais (duas artérias e duas veias) e um dueto alantóide constituíam o funículo umbilical desses ruminantes, sendo que existia entre eles uma grande quantidade de gelatina de Wharton e pequenos vasos (vasa vasorum). Todas as estruturas estavam envolvidas pelo epitélio amniótico. Em 28 (93,33% ± 4,5) dos 30 fetos examinados, observamos uma anastomose interarterial umbilical. | Morphologic aspects related to disposition and constitution of arteries and veins of the umbilicus funiculus were investigated in 30 (13 males and 17 females) fetuses of crossbred zebu cattle. The age of the fetuses varied in a range of 2 to 7 months, and the umbilical vessels were injected with a “650” Neoprene latex solution, properly stained and then dissected. Additionally to this procedure, the umbilicus funiculus were cut at the juxta-fetal, juxta-placental and at the intermediate portions and were<br />studied histologically by means of different staining techniques. The length of the umbilical cord varied from 3 to 43 cm in fetuses 2 to 7 months old. The umbilicus funiculus of the animals studied was constituted by 4 umbilical vessels, i.e., 2 arteries and 2 veins, and by one alantoid duct, and among these formations a large amount of Wharton gelatinous substances and small essels (vasa vasorum) were observed. All these strctures were involved by the amniotic epithelium. Inter-aterial<br />umbilical anastomoses were found in 28/30 (93,33%) of the examined animals.

This experiment was conducted to investigate the effects of 2 ppm iodine supplementation to drinking water of broilers on body weight, feed efficiency, carcass dressing percentage, feed consumption per kg carcass, mortality and litter moisture. In the present study a total of 512 day-old sexed Avian Farm broiler chicks were used