Rafael Nogueira Furtado

Características de carcaça em ovinos alimentados com rações contendo torta de mamona

To evaluate the effects of rations containing castor cake on sheep carcass and non carcass components characteristics, this research was undertaken. Twenty Morada Nova sheep (initial weight of 18,7±1,18kg) were assigned to a complete randomized block design according to sex (whole males and females), with five treatments (castor cake untreated, castor cake treated with limestone, urea, phosphate monodicalcium and autoclaved) and four repetitions. There wasn’t difference in dry matter intake, total weight gain and weight of slaughter between treatments and therefore didn’t occur in most variables between treatments. However, animals fed with rations containing castor cake autoclaved and castor cake treated with phosphate monodicalcium were higher than those fed untreated castor cake. The loss in fast, there was difference between animals fed with rations containing castor cake autoclaved and animals fed with castor cake treated with urea, resulting also in difference in the percentage empty body weight. Animals fed with rations containing treated with phosphate monodicalcium had higher weight of rumen-reticulum in relation to the animals fed with ration containing castor cake treated with urea. The rib eye area was greater on animals fed castor cake autoclaved and treated with phosphate monodicalcium. In general, the castor cake untreated not affect carcass and non carcass components.

Consumo, comportamento e desempenho em ovinos alimentados com dietas contendo torta de mamona

A torta de mamona tem potencial para utilizacao na alimentacao de ovinos em regioes semiaridas, mas apresenta como limitacao a ricina, que pode causar intoxicacao. Objetivou-se avaliar influencia de dietas contendo torta de mamona em comportamento ingestivo, consumo e desempenho em ovinos. Foram distribuidos 20 ovinos Morada Nova em blocos ao acaso (dois blocos) com cinco tratamentos (torta de mamona nao tratada, tratada com calcario calcitico, com ureia, com fosfato monobicalcico e autoclavada) e quatro repeticoes. O consumo dos nutrientes nao foi influenciado pelos tratamentos de destoxificacao, alem dos animais nao terem apresentado sintomas de intoxicacao. Quanto ao comportamento ingestivo, nao houve diferenca para a maioria das variaveis entre tratamentos, bem como nao se confirmou possivel rejeicao dos ovinos pela torta nao tratada. Foi observado que os animais alimentados com dieta contendo torta de mamona autoclavada apresentaram desempenho superior aos que receberam torta nao tratada. Apesar dos animais alimentados com torta de mamona tratada com fosfato monobicalcico nao terem sido superiores aos alimentados com torta nao tratada, apresentaram ganho medio diario 27,3% maior, consumiram menos 10,5% de alimento para ganhar 1 kg e, para ganharem 12 kg, precisaram de 24 dias a menos. A terminacao de ovinos utilizando dietas contendo torta de mamona autoclavada apresenta resposta superior a terminacao desses animais alimentados com dietas contendo torta de mamona nao tratada ou destoxificada com ureia. Alem disso, animais terminados com dietas contendo torta destoxificada com fosfato monobicalcico ou calcario calcitico apresentam resposta intermediaria.

Fermentative losses and chemical composition of elephant grass silage added with castor bean hull

Fermentation and chemical composition of elephant grass silage was evaluated with 0, 10, 20 and 30% castor been hull based on the natural matter. The experimental design was completely randomized with five replications. Silos were weighed out during manufacture, and reweighed before and after the opening after storage for 30 days. We determined the chemical composition, specific mass and effluent and gas losses, dry matter recovery, pH and ammonia nitrogen of the silage. The specific mass, pH, dry matter content, crude protein, acid detergent fiber, total carbohydrates and cellulose increased linearly (P<0.05) with the inclusion of castor bean hull. Quadratic effect was observed for effluent and gas losses, ammonia nitrogen and non-fibrous carbohydrates with minimal point when the castor bean hull was included at 25.63; 31.19; 28.07 and 11.7%, respectively. Dry matter recovery and neutral detergent fiber adjusted to a quadratic equation with maximum point when the castor bean hull was added at 24.20 and 20.62%, respectively. The inclusion of castor bean hull in elephant grass silage reduces losses during fermentation without compromising the chemical composition when included in the ratio of up to 25%, based on the natural matter.

Viabilidade econômico-financeira do confinamento de ovinos alimentados com rações contendo torta de mamona

Twenty sheep were placed in a completely randomized block design and submitted to one of five treatments testing castor cake as a ration ingredient (untreated castor cake, treated with limestone, with urea, with mono-dicalcium phosphate and autoclaved) to evaluate their performance and the economic output. The roughage consisted of tifton-85 bermudagrass hay. The market prices of the rations ingredients, body weight (BW) and the carcass weight were considered to identify the minimum conditions for the enterprise to become economically feasible. After obtaining the ration cost and the dry matter intake, the technical, zootechnical and economic indexes were analyzed using the Excel ® program. The daily production (kg of BW or kg of carcass) was higher for sheep eating rations with autoclaved castor cake and treated with mono-dicalcium phosphate, showing the highest production system turnover and providing the highest number of finished animals on a yearly basis. These production systems showed the highest gross income. The animal purchase and feeding were the most representative items on BW production expenses, representing 44.8 and 43.3%/year on average, respectively. Adopting R

Levantamento florístico e fitossóciológico em área de caatinga manipulada durante o período chuvoso

4.70/kg BW and R

Levantamento Florístico do Estrato Herbáceo em Área de Caatinga Pastejada por Caprinos Durante o Período Chuvoso

13.40/kg carcass as sell prices, the production system containing castor cake treated with mono-dicalcium phosphate showed the best economic output, with a 1.07 benefit/cost, a R

Biomass components of Pennisetum purpureum cv. Roxo managed at different growth ages and seasons

73,117.34 liquid present value (LPV), 54% internal return rate (IRR) and a R

Nitrogen balance and ruminal assessment in male and female sheeps fed rations containing castor cake under different treatments

4.32 BW total cost. On the other hand, the production system using non-treated cake as the ingredient showed a 1.00 benefit/cost, R

Agronomic and nutritional responses of Carajas elephant grass fertilized with protected and non-protected urea

1,772.62 LPV, 8% IRR and R

Intake, milk yield, and physiological parameters of lactating cows fed on diets containing different quantities of xiquexique (Pilosocereus gounellei)

4.63/kg BW total cost, without any evidence of animal toxicity. It can be concluded that mono-dicalcium phosphate-treated castor cake is a promising ingredient to be used in sheep rations.