ABSTRACT The objective of this study was to describe the growth of freshwater angelfish (Pterophyllum scalare) using the Gompertz model, determining the relative growth and allometric coefficients of body components in relation to body weight and protein weight. Six hundred animals were grown until 233 days of age. Data on chemical composition (water, lipid, protein, and ash) and weight measurements were obtained each 30 days. The Gompertz growth equation was used to analyze chemical allometry and to estimate growth parameters. […]

The objective of this study was to evaluate the effect of finishing systems on natural pasture and gender on the carcass quality, parts and tissue development of lambs. Forty-five non-castrated males and forty-five females were distributed in a completely randomized design into three treatments: lamb with mother kept on pasture; weaned lamb kept on pasture and weaned lamb kept on pasture with supplementation (soybean hulls at 1% of body weight). The criteria for slaughter was body condition score (2.0 – […]

Twenty 11/16 Texel x 5/16 Ile de France crossbred lambs were slaughtered at different body weights to evaluate the growth of their non-carcass components. Animals were weaned at 42 days of age (15.9 ± 2.1 kg of body weight), housed in individual stalls, and fed ad libitum. After ten days of an experimental adaptation period, 5 lambs were slaughtered. The remaining lambs were randomly assigned to one of three following slaughter weights: 25, 30 or 35 kg of body weight […]

This study had the objective of verifying the differential growth of carcass organs and visceras in relation to the empty body weight of Santa Ines and Bergamacia lambs. Thirty-six non-castrated male lambs, 24 Santa Ines breed and 12 Bergamacia breed, slaughtered at 15, 25, 35 and 45 kg of live weight under feedlot system receiving a diet with forage:concentrate ratio of 20:80 were used. The study of the relative growth of internal organs, fats, carcass non-integrant parts, carcass parts and […]

Thirty-two non castrated Mediterranean male buffaloes were used, being divided into five groups (categories). One group was randomly assigned to immediate slaughter, four groups were fully fed with ration containing 70% of concentrate, dry matter basis until reaching the slaughter weights of 450, 480, 510 and 540 kg. Regression equations of log content of carcass and their tissues (muscle, adipose tissue and bone) were adopted as a function of log empty-body-weight. Carcass presented positive allometry value close to 1, reflecting […]

Sixty four uncastrated males from zebu breeds Gyr, Guzerat, Mocho de Tabapuã and Nellore were used. The animals from each breed were divided into five groups (categories). One group was ramdomly assigned to immediate slaughter, three groups were full-fed a ration containing 50% concentrate, dry matter basis until reaching the slaughter weights of 405, 450 and 500 kg, respectively (group I, II and III). The fifth group was fed a restricted amount of the same ration to supply levels of […]