Salete Alves de Moraes

Parâmetros sanguíneos, hepáticos e ruminais de ovinos alimentados com dietas com farelo de mamona destoxificado

Abstract – The objective of this work was to evaluate the blood, liver and rumen parameters, as well as to characterize and quantify the population of ciliated protozoa in the rumen of sheep fed diets with detoxified castor bean meal (DCBM). Thirty‑two lambs were used, for the evaluation of blood and liver parameters, and four rumen‑cannulated adult sheep were used to determine rumen parameters. The control diet was composed by buffel grass hay, ground corn grain, urea and soybean meal (SBM). In the treatments, SBM was partially replaced by DCBM at 15, 30 and 45% in the concentrate. There was no significant difference, among treatments, for the serum‑urea contents whose mean value was 666.0 -mg L1. There was no significant difference, among diets, for glucose, aspartate aminotransferase and alanine aminotransferase, which had mean values of 690.3 -mg L1, 127.4 IUL -1 and 16.9 IUL -1 , respectively. The ammoniacal nitrogen and pH values had an increasing linear pattern with the replacement of SBM by DCBM. The genus

Concentrate levels for lambs grazing on buffel grass

Use of concentrate for lambs grazing buffel grass may improve animal performance and animal traits. The objective of the present trial was to evaluate the final body weight, average daily gain, total weight gain and carcass traits (cold and hot carcass weights, cold and hot dressing percentages) of lambs grazing buffel grass and receiving different concentrate levels (0; 0.33; 0.66 and 1.0% of dry matter in relation to body weight). Forty lambs were used, ten animals by treatment, with 16.5 ± 2.0 kg of initial body weight, distributed in four groups. Experimental design was a completely randomized with ten replicates. Concentrate levels did not influence the final body weight, the average daily gain, total weight gain and cold and hot carcass weights. However, the increase of concentrate levels promoted higher cold and hot carcass yields.

Carcass traits and meat cuts of lambs receiving increasing levels of concentrate

The use of concentrate for sheep grazing Buffel grass may improve the productive performance and carcass traits of animals. The objective of present trial was to evaluate the productive performance and carcass traits of sheep grazing Buffel grass receiving different concentrate levels. The concentrate levels used were: 0; 0.33; 0.66 and 1.0% of dry matter in relation to body weight. Forty lambs were used, ten animals by treatments, with 16.5 ± 2.0 kg of initial body weight and 20.97 kg final body weight, distributed in four groups. The experimental design was a completely randomized with ten replicates by treatments. The concentrate levels did not influence the cold and hot carcass weight. However, the increasing levels of concentrate promoted higher cold and hot carcass yield. Blood, head, hide, heart, lung, kidney and liver (non carcass components) weights and proportion of slaughtered body weight (SBW) and leg, shoulder, brisket, rib, neck and loin weights (commercial meat cuts) were not affected by increasing levels of concentrate. Full intestine in proportion of SBW was lower with the increase of concentrate levels, while the briskets weight was higher with increase of concentrate.

Consumo, digestibilidade aparente de nutrientes e balanços de nitrogênio e hídrico de ovinos alimentados com silagens de cultivares de capim-búfel

The objective of this present experiment was to determine intake and apparent digestibility of dry matter and nutrients, nitrogen (NB) and water balances (WB) of sheep fed with buffel grass silages. The buffel grass cultivars used were Tanzania, Buchuma and Biloela. 21 male, castrated, crossbred Santa Ines x Non defined genotype sheep, with initial body weight of 31.8±3.16kg were used, kept in metabolic cages. The experimental design was completely randomized with seven replicates. No differences were observed in dry matter intake in g/day (919.2) and % of body weight (2.9). In general, digestibility coefficients of dry matter varied from 37.7% to 60.0%. The NB and WB were positive, with higher NB values in sheep fed with Tanzania (5.1g/day) and Biloela (3.9g/day) and higher WB in animals fed with Buchuma (1.38kg/animal/day) and Biloela (1.42kg/animal/day). All cultivars of buffel grass evaluated (Tanzania, Buchuma and Biloela) presented adequate chemical composition, where the silage of buffel grass used corresponded to 60% of the total daily water intake by sheep.

Composição bromatológica e digestibilidade aparente de alimentos encontrados na região semiárida brasileira para arraçoamento de tilapia rosa em cultivos

This study evaluated the apparent digestibility coefficient of dry matter, crude protein and digestible energy (Kcal kg-1) for six ingredients (cassava chips, sorghum grain, atriplex hay, gliricidia hay, leucaena hay and wine residues) available in Brazilian semi-arid for pink tilapia feed. The feed were stained with 0.1% of chromic oxide III. A total of six circular tanks containing 1000 liters of volume were used. In each one was placed a circular cage of plastic screen with 20 fish each (initial weight of 80g). The fish were hand fed daily 3 times a day. To collect feces each cage was placed in the evening in conical 250L fiberglass tanks. Apparent digestibility of the ingredients tested was calculated based on the content of chromic oxide III in the samples offered and in the feces by atomic absorption spectrophotometry to the nutrient feed and feces, according to standard procedure. Among ingredients evaluated the best CDA values for MS were to cassava chips and sorghum. The best CDA values for CP were to cassava chips, sorghum and gliricidia hay. Atriplex hay was the ingredient with better digestible energy value.

Misturas Múltiplas na Suplementação de Ovinos: Características da Carcaça e Rendimentos de Cortes Comerciais

O objetivo do presente estudo foi avaliar os parâmetros de carcaca e rendimentos de cortes comerciais de ovinos mantidos em pastagens diferidas de capim Bufel recebendo suplementos multiplos com diferentes teores de ureia. Os tratamentos avaliados foram: 5, 8, 11 e 14% de ureia na materia seca do suplemento. Foram utilizados 36 ovinos machos, nove animais por tratamento, com peso corporal inicial medio de 18 kg, distribuidos em quatro grupos. O delineamento experimental adotado foi o inteiramente casualizado com nove repeticoes por tratamento. Os teores de ureia no concentrado nao influenciaram (P>0,05) os pesos e rendimentos de carcaca quente e fria e os pesos e rendimentos de cortes carneos comerciais (pernil, paleta, costela e carre). O teor de ureia a ser utilizado no concentrado para ovinos mantidos em pastagens diferidas de capim Bufel estara condicionado ao desempenho economico proporcionado pelo suplemento. DOI:10.15528/2176-4158/rcpa.v12n2p184-187

Desempenho produtivo e características de carcaça de ovinos mantidos em pastos de duas cultivares de capim-bufel manejados em três ofertas de forragem

The objective of this present trial was to evaluate the forage intake, productive performance of lambs (average daily gain, total weight gain and final body weight), the carcass characteristics (hot carcass weight and hot carcass dressing), besides stocking rate and weight gain by area of buffel grass pastures (Cenchrus ciliaris L.) grazing by lambs. This trial was carried out during September 2009 to Ausgust 2010, using continuos stocking. The treatments were combinations of two cultivars of buffel grass (Biloela and Cpatsa 7754) and three forage allowance (4, 8 and 12 kg of dry matter/100 kg of body weight or 4, 8 and 12%) in 3 x 2 factorial arrangement and completely randomized blocks with three replicates. The variables related to forage intake, produtive performance, carcass characteristics, stocking rate and weight gain by area did not affect by cultivars, forage allowance and interation between cultivars and forage allowance. The lambs presented 452,14 g/animal/day of dry matter intake, 59,77 g/animal/day of average daily gain, 41,51 % of hot carcass dressing, while buffel grass pastures had 11,78 lambs/ha and promoted 205,64 kg/ha/year of weight gain.

Retorno da atividade ovariana pós parto em cabras leiteiras suplementadas com diferentes níveis de energia

This study aimed to evaluate the return of post partum ovarian activity in dairy goats supplemented with different levels of energy during the dry period in the semi-arid region of Pernambuco. Twenty-four animals were allocated into four treatments of six animals each: Control, consisting of goats that had access to pasture and only received 4 kg of fresh palm, and three groups with isoproteic supplementation (20% Crude Protein), ranging in TDN content of 65%, 75% and 85%. The daily milk yield showed a linear growth behavior (P 0.05). We concluded that the supplementation with different levels of energy promoted a positive effect, as increased productive parameters and reduced the number of days for the reestablishment of the reproductive parameters postpartum; for instance, uterine involution, return to estrus and consequently return of ovarian activity postpartum.

Fósforo Sérico em Bovinos em Diferentes Épocas em três Solos da Região da Campanha–RS

O presente estudo objetivou observar as variacoes dos teores de fosforo (P) no soro de sangue de novilhas em tres areas de campo natural nao perturbado, com caracteristicas de solo e vegetacao distintas, localizadas na regiao da Campanha-RS. Efetuou-se a amostragem em areas sobre os solos Neossolo Regolitico eutrofico (RLe), Argissolo Bruno-Acinzentado (ABA) e Planossolo Haplico eutrofico (PHe) durante um ano, com um intervalo de aproximadamente 45 dias, num total de oito coletas. Para a variavel P no soro foi detectado efeito altamente significativo (P<0,01) do tipo de solo e das epocas, bem como a interacao destes dois fatores. Em funcao dos resultados obtidos e, considerando que o percentual de amostras do soro de sangue com niveis de fosforo serico dentro do limite de normalidade durante todo o periodo experimental, em todos os solos, foram de 50%, infere-se que os animais mantidos em regime de pastejo extensivo continuo e sem suplementacao mineral, na regiao da Campanha-RS, apresentam baixos niveis de fosforo no soro de sangue.

Consumo e Digestibilidade Aparente das Silagens de Seis Genótipos de Milho Precoce ou Super-Precoce

Avaliaram-se o consumo medio diario e a digestibilidade aparente da materia seca (MS), materia orgânica (MO) e proteina bruta (PB) das silagens de seis genotipos de milho de ciclo precoce e superprecoce (BRS Caatingueiro, BRS Assum Preto, BR 5033 - Asa Branca, BR 5028 - Sao Francisco, Gurutuba e BRS 4103) recomendados para a regiao nordeste. Foram utilizados 24 carneiros, machos, castrados, alojados em gaiolas metabolicas. O delineamento experimental utilizado foi o inteiramente casualizado com seis tratamentos e quatro repeticoes, as medias foram comparadas pelo teste de Tukey. Nao foram observadas diferencas entre os genotipos quanto ao consumo e digestibilidade aparente da MS, MO e da PB (P>0,05). Os consumos medios de MS, MO e PB foram de 676, 646 e 41,5 g/dia, respectivamente. Os valores medios de digestibilidade da MS, MO e PB foram, respectivamente, de 64,0, 64,8, e 53,1%, resultados compativeis com o das silagens de genotipos comumente indicados e utilizados para a producao de silagens. Genotipos de ciclo precoce e super-precoce, constituem-se como opcao volumosa suplementar na forma de silagem em condicoes Semi-Aridas. DOI:10.15528/2176-4158/rcpa.v12n2p188-191