Luis Fernando Vilani de Pelegrini

Elaboração de embutido fermentado tipo salame utilizando carne de ovelhas de descarte

The aim of this work was producing fermented sausage with meat of culling ewe of two genetic groups in two feeding systems. 10 ewes of the Ideal breed and 10 of the Texel breed were used in the experiment, which were randomly distributed in agreement with the breed group in two alimentary systems: confinement and cultivated pasture. The animals were slaughtered when they reached a medium corporal score of 3.5 points. For the production of the sausages, a proportion of 80% of ewe meat and 20% of pork meat were used. The pH, water activity, weight loss, and sensorial analysis, were determinated using a scale of 7 points evaluating the color, odor, texture, and flavor attributes of the fermented sausages. No differences were not found among the genetic groups (p > 0,05) and the alimentary system (p > 0,05). The average values in the sensorial panel varied from 4,90 to 5,41 for coloration; 4,53 to 4,81 for odor; 5,25 to 5,75 for flavor and from 5,40 to 5,69 for texture. For the feeding methods they varied from 5,03 to 5,25; 4,56 to 4,78; 5,50, and 5,34 to 5,75 for coloration, odor, flavor, and texture, respectively, considering the genetic groups. It can be concluded that the sausages fermented were sensory approved by the tasters.

Perfil de ácidos graxos da carne de ovelhas de descarte de dois grupos genéticos submetidas a dois sistemas de manejo

The objective of this experiment was to evaluate if the fatty acids profile in meat is affected by sheep breed or managing system. Twenty sheep, being 10 of the Ideal and 10 of the Texel breed, were randomly distributed according to its genetic group in two managing systems: feedlot and receiving sorghum silage and concentrate-based diet or grazing on a temperate pasture. The major fatty acids present in Longissimus muscle of sheep in all treatments were the oleic (C18:1), palmitoleic (C16:0) and stearic (C18:0). The genetic group did not affect the fatty acids profile of this muscle. However, the content of u 3 fatty acids was higher (P<.05) and the u 6/u 3 ratio was lower (P<.05) in meat of sheep grazing the temperate pasture. Based on fatty acids profile, the sheep finished on temperate pasture provided a healthier meat for the human consumption than sheep managed in feedlot.

Características de carcaça de ovelhas de descarte das raças Ideal e Texel terminadas em dois sistemas de alimentação

Carcass traits of culling ewes from Texel and Polwarth breeds submitted to two feeding systems were evaluated. Twenty ewes (10 from Polwarth breed and 10 from Texel breed) were randomly distributed according to its genetic group, in two feeding systems (feedlot and cultivated pasture). The slaughter was carried out when the animals reached body condition score of 3.5 points. Hot carcass (HCW) and cold carcass (CCW) weights and hot carcass (HCD) and cold carcass (CCD) dressing of Texel ewes were higher than those of Polwarth ewes: 27.85 and 19.04 kg, 27.08 and 18.43 kg, 47.25 and 45.20 and 45.95 and 43.72%, respectively. The absolute weights of cuts for leg, shoulder, neck and rib, and absolute weights for muscles, bones and leg fat of ewes from Texel breed were higher than those obtained by Polwarth breed. When evaluated as relative weights, however, these characteristics did not differ between the two breeds. The feeding system did not constitute a change factor for carcass traits of culling ewes. Texel ewes breed showed cuts with higher weights than those obtained by Polwarth ewes breed.

Physico-chemical characterization of frozen sheep meat for a predetermined period

Aimed to evaluate the physicochemical stability of lamb meat stored in a freezer (18°C) for predetermined period. Sheep meat samples from the longissimus dorsi that were packaged and stored at -18 °C for predetermined intervals of time: 0, 90, 180, 270, 360, 450, 540 days. The specific analyzes were performed at the Department of Food Science and Technology, Federal University of Santa Maria. In relation to the evaluated parameters can be observed linear decrease pH, protein, fat, moisture and ash, and increasing linearly to lipid oxidation, thawing loss and protein exudate. The storage period alters the physico-chemical characteristics of sheep meat.