Effects of Balancing Rice Bran Based Diets for Up to Four Amino Acids on Growth Performance of Broilers

Abstract

Objective of this study was to determine whether the adverse effects associated with high dietary rice bran (RB) inclusion levels in broiler diets could be corrected by balancing diets for higher number of amino acids (AA). The experiment followed a completely randomize design in 2x4 factorial arrangement. Eight experimental diets were formulated using linear model based computer software (CUFATotal Feed). Treatment factors were two dietary RB levels (20 and 40%) and four levels of AA considerations in ration formulation (1. lysine and methionine, 2. 1 + isoleucine, 3. 2 + valine, 4. 3 + threonine). When rations were balanced for lysine and methionine, many of the other AAs were in excess. No practical ration could be formulated to meet the threonine requirement. Twenty-two-day old broiler chicks (n=144) were allocated into 48 pens and fed one of the eight experimental diets ad libitum from 23-43 days. Balancing the diets for higher number of AAs had no significant effect on any of the growth performance parameters. Live weight on day 43, weight gain from day 23-43 and feed intake and the tibia ash contents of the broiler fed 40% dietary RB were significantly lower than those of 20% RB fed counterparts. However, feed conversion ratios were not significantly different between the birds fed two dietary RB levels. Interaction between RB levels and the number of AAs considered in ration formulation was not significantly different with respect to any of the growth parameters measured. It was concluded that balancing rations for up to four amino acids; lysine, methionine, isoleucine and valine did not mitigate the adverse effects of 40% dietary RB in broiler growth performance.

Farelo integral de arroz parboilizado submetido a armazenamento prolongado para alimentação de codornas de corte

“…O teste de Dunnett, a 5% de probabilidade, foi utilizado para comparar o tratamento controle a cada um dos demais tratamentos, e o teste t, a 5% de probabilidade, para comparar os fatores avaliadosarmazenamento e nível de inclusão. Há relatos de que o aumento da fração fibrosa pela presença de polissacarídeos não amiláceos e de outros fatores antinutricionais presentes no farelo de arroz pode promover redução no aproveitamento dos nutrientes da ração quando esse ingrediente é adicionado (Gallinger et al, 2004;Piyaratne et al, 2009). Porém, no presente trabalho, embora tenha havido redução nos coeficientes de digestibilidade da matéria seca e do nitrogênio com a inclusão do FIAP, houve aumento nos valores de energia metabolizável das rações que o continham.…”

“…No entanto, a presença de fatores antinutricionais, tais como fitato, lipases e substâncias antiproteolíticas, limita a utilização do farelo integral de arroz na alimentação das aves (Piyaratne et al, 2009). Além disso, o farelo de arroz é propenso a desenvolver rancidez em razão da elevada percentagem de gordura e enzimas lipolíticas, o que torna o farelo muito instável durante o armazenamento (Mujahid et al, 2003).…”

Performance of Broiler Chickens Fed Low Protein, Limiting Amino Acid Supplemented Diets Formulated Either on Total or Standardized Ileal Digestible Amino Acid Basis

“…For protein reduction, locally available feed ingredient such as de-oiled rice bran (DORB) can be thought of as substitute to partially replace soybean meal the costliest and widely used protein source. Piyaratne et al (2009) used rice bran (with oil) up to 20% in broiler rations by balancing limiting amino acids. However, in this study, the limiting amino acids were not supplemented as crystalline amino acids, rather the soybean meal content was increased to balance the limiting amino acids and hence, the protein content of the diet was increased by 2.0% in the diet balanced for all limiting amino acids.…”

“…However, in this study, the limiting amino acids were not supplemented as crystalline amino acids, rather the soybean meal content was increased to balance the limiting amino acids and hence, the protein content of the diet was increased by 2.0% in the diet balanced for all limiting amino acids. Moreover, in none of the studies utilizing DORB (Das and Ghosh, 2000; Khan et al, 2002; Piyaratne et al, 2009), the protein reduction was addressed and most of the studies were conducted with a low total lysine level (<1.10%) to avoid deficiencies of other limiting amino acids, and the used lysine levels in fact were far below the recommended levels for present day fast growing commercial broilers. In this context, our previous study clearly demonstrated significant reduction of broiler performance in 6% DORB based low protein diets due to deficiencies of amino acid valine, isoleucine and tryptophan (Basavanta Kumar et al, 2015).…”

Effects of rice bran protein concentrate on the growth performance and digestive enzyme activities of jundiá ( Rhamdia quelen ) (Quoy and Gaimard, 1824)

“…The rice farming industry produces the largest amount of co‐products or residues (Nakhshiniev et al, 2014). Among these residues, rice bran has nutritional potential, but it has a high fibre content and antinutritional factors (Piyaratne, Atapattu, Mendis, & Amarasinghe, ), limiting its use in fish feed. The processing of rice yields approximately 9% rice bran, which is used for animal nutrition, including fish (Lorenzett, Neuhaus, & Schwab, ).…”