Graziela Aparecida Santello

Características de carcaça e análise do custo de sistemas de produção de cordeiras ½ Dorset Santa Inês

The objectives of this trial were to evaluate carcass characteristics and production costs of ½ Dorset Santa Ines lambs finished at two finishing systems. Forty-four weaned ½ Dorset Santa Ines lambs were distributed to one of the following two finishing systems: 1) feedlot lambs were fed concentrate (4% BW) containing 15.56% CP and 4.32 Mcal GE/kg DM or 2) lambs were on pasture and received a supplement (1.5% BW) containing 27.01% CP and 4.51 Mcal GE/kg DM. Concentrate and supplement costs were R

Desempenho e características das fibras musculares esqueléticas de cordeiros nascidos de ovelhas que receberam suplementação alimentar em diferentes períodos da gestação

0.39 and R

Evaluation of methodologies to identify endoparasites in sheep from the Amazon region

0.54, respectively. Animals were slaughtered when they reached, on average, 30 kg of BW. Mean values for hot and cold carcass weights were 14.33 and 14.11 kg and 13.91 and 13.6 kg for animals on feedlot and pasture plus supplementation system, respectively. Carcass and commercial carcass yields were 55.81 and 55.61% and 46.39 and 46.04% for animals on feedlot and pasture plus supplementation system, respectively. It was also observed, in this order, the following mean values for body condition score, and carcass and hindlimb compactness indexes: 3.03 and 2.96; 0.21 and 0.20 kg/cm; 0.43 and 0.44 cm/cm for animals on feedlot and pasture plus supplementation system, respectively. Slaughter age, body condition score, hot and cold carcass weights, carcass and commercial carcass yields, carcass and hindlimb compactness indexes all did not differ between treatments indicating that lambs can be finished either at feedlot or at pasture plus supplementation. However, according to the economical analysis is recommended the pasture plus supplementation finishing system.

Morfologia muscular e características qualitativas da carne de cordeiros ½ Dorper-Santa Inês

The objective of this trial was to evaluate the body weight change as well as the diameters and numbers of muscular fibers of the Semitendinosus muscle of lambs from birth until weaning that were born from Santa Ines ewes supplemented at different stages of gestation. Seventy-three Santa Ines ewes averaging 45.11 kg of body weight (BW) that were bred with three Dorset rams were randomly assigned to the following treatments during pregnancy: 1) control (CO): tanzaniagrass pasture (Panicum maximum Jacq.) plus cassava by product during the entire gestation; 2) initial third (IT) - CO plus supplementation from the 1st to 50th day of gestation; 3) medium third (MT) - CO plus supplementation from the 50th to 100th day of gestation; 4) final third (FT) - CO plus supplementation from the 100th day of gestation to birth. The birth season occurred from November 23/2003 to January 03/2004. Treatments did not affect the lambs BW at birth (BWB), at 30 days of age (BW30), and at weaning (BW60), which averaged 4.02, 9.19, 16.40 kg, respectively. The average daily weight gain from birth to weaning (ADG 0-60) also did not differ across treatments showing a mean value of 0.21 kg/day. The type of birth (single or twins) significantly affected the BWB, BW30, BW60, and ADG 0-60. No significant differences were observed in the diameters of muscular fibers at birth (11.61 mm) and at weaning (27.65 mm) comparing all treatments. The number of muscular fibers, weight, and length of the semitendinosus muscle averaged 1,454, 21.04 g, and 8.43 cm, respectively, and were all unaffected by the supplementation at different stages of pregnancy. It can be concluded that supplementing ewes during gestation is not recommended if animals are fed tanzaniagrass plus a cassava by-product (CO treatment).The objective of this trial was to evaluate the body weight change as well as the diameters and numbers of muscular fibers of the Semitendinosus muscle of lambs from birth until weaning that were born from Santa Ines ewes supplemented at different stages of gestation. Seventy-three Santa Ines ewes averaging 45.11 kg of body weight (BW) that were bred with three Dorset rams were randomly assigned to the following treatments during pregnancy: 1) control (CO): tanzaniagrass pasture (Panicum maximum Jacq.) plus cassava by product during the entire gestation; 2) initial third (IT) - CO plus supplementation from the 1st to 50th day of gestation; 3) medium third (MT) - CO plus supplementation from the 50th to 100th day of gestation; 4) final third (FT) - CO plus supplementation from the 100th day of gestation to birth. The birth season occurred from November 23/2003 to January 03/2004. Treatments did not affect the lambs BW at birth (BWB), at 30 days of age (BW30), and at weaning (BW60), which averaged 4.02, 9.19, 16.40 kg, respectively. The average daily weight gain from birth to weaning (ADG 0-60) also did not differ across treatments showing a mean value of 0.21 kg/day. The type of birth (single or twins) significantly affected the BWB, BW30, BW60, and ADG 0-60. No significant differences were observed in the diameters of muscular fibers at birth (11.61 mm) and at weaning (27.65 mm) comparing all treatments. The number of muscular fibers, weight, and length of the semitendinosus muscle averaged 1,454, 21.04 g, and 8.43 cm, respectively, and were all unaffected by the supplementation at different stages of pregnancy. It can be concluded that supplementing ewes during gestation is not recommended if animals are fed tanzaniagrass plus a cassava by-product (CO treatment).

Accuracy of the FAMACHA© method in ewes fed different levels of crude protein

Worms are caused by various species of helminths that infect the gastrointestinal tract of sheep, resulting in low productivity and high rates of morbidity and mortality. The objective was to test the indirect or Famacha method, which observes the colour of the conjunctiva, by comparing it with the direct method of counting parasite eggs per gram of faeces, to identify the amount of parasites in the animals. 18 Santa Ines sheep were tested. The visual evaluation method involves grouping animals into five categories, ranging from intense red (1) to pale red (5). It is recommended not to deworm animals classed as 1 or 2 (healthy animals) and to deworm animals in categories 3, 4 and 5 (anemic animals). The parasitic monitoring using the two methodologies took place between November 2011 and April 2012. Testing of the ocular mucosa and the direct egg counting from the rectum of the sheep (individually for control purposes) were done monthly. The rating scale for the evaluation of the ocular mucosa ranged from 1 to 3 corresponding to a range of 0 to 6,500 thousand eggs per gram of feces. At the end of the experiment, there was a reduction of 64.8% of antiparasitic drug usage in the sheep. The method of ocular Revista Brasileira de Higiene e Sanidade Animal Brazilian Journal of Hygiene and Animal Sanity ISSN: 1981-2965