Dissertação
Metabolismo e eficiência zootécnica de jundiás (Rhamdia quelen) alimentados com concentrados proteicos vegetais
Fecha
2012-02-23Registro en:
LOVATTO, Naglezi de Menezes. METABOLISM AND ZOOTECNHICAL EFFICIENCY OF JUNDIÁ
(Rhamdia quelen) FED WITH PROTEIN CONCENTRATES PLANTS. 2012. 92 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2012.
Autor
Lovatto, Naglezi de Menezes
Institución
Resumen
This work was conducted to evaluate the growth and metabolism of jundiá fed protein concentrates of
sunflower meal and crambe as a substitute source of vegetable protein, 25 and 50% of animal protein.
The work was divided into two distinct phases. The first consisted in obtaining and characterization of
protein concentrates of sunflower meal and crambe methodology using concentration by isoelectric pH
(Smith et al, 1946), with modifications. We obtained values of 51.42 and 50.37% crude protein and
yield of 48.30 and 50.32% respectively. Regarding the profile of amino acids, the protein
concentration in crambe meal increased levels of lysine and methionine in 50.29 and 122.00%,
respectively. In sunflower protein concentrate increased by 41.5 and 186%. In the second phase the
biological assay was conducted for 52 days in water recirculation system. We used 300 jundiás with
average initial weight of 14.59 ± 0.18 g, these animals were housed in 15 experimental units of 280L
net volume of each. The initial stocking density was 1.04 g fish / L water. We evaluated two levels (25
and 50%) partial replacement of protein coming from the flour meat and swine bone by protein
concentrates in question. At the end of the period, there were no statistical differences for weight (W).
The feed conversion ratio (FCR) was higher in the Control and CPFG-25% diets (P <0.05). There was
no significant difference (P> 0.05) for specific growth rate (SGR), relative weight gain (RWG) e
average daily gain (ADG). In relation to condition factor (CF), the highest values were found in the
diet CPFG-25%. There was no statistical difference (P> 0.05) in dry matter, protein and crude protein
deposited (CPD) in carcasses of animals subjected to different diets. We found a higher lipid content
and total fat deposited (TFD) in the diet CPFG-50%. For carcass yield (CY) and digestive rates was
not significant between the experimental diets. The activities of digestive enzymes trypsin and
chymotrypsin showed no statistical differences in diets. There was no significant difference for any of
the analyzed blood parameters (glucose, total circulating protein, albumin, cholesterol and
triglycerides). The animals diet CPFG-25% had higher liver glycogen stock (p <0.05). It was found
increased activity (p <0.05) of the enzyme glutamic-pyruvic transaminases (GPT) in animals of the
control diet. Was observed increase in the concentration of free amino acids in fish fed diet CPFG-
25%. It can be concluded that the use of protein concentrates of sunflower meal and crambe meal did
not affect growth and weight gain of fish as well as metabolism. The protein concentrate of sunflower
meal was more metabolically efficient than crambe meal. The animals fed diet CPFG-25% had
improved metabolic efficiency of use of the ingredients.