%0 Journal Article
%T Supplementation for steers on pasture during the rainy period: intake, digestibility and ruminal parameters Suplementa  o para bovinos em pastejo no per¨ªodo das ¨¢guas: consumo, digestibilidade e parametros ruminais
%A Severino Delmar Junqueira Villela
%A M¨¢rio Fonseca Paulino
%A Sebasti£¿o de Campos Valadares Filho
%A Edenio Detmann
%J Revista Brasileira de Sa¨²de e Produ£¿£¿o Animal
%D 2011
%I Universidade Federal da Bahia
%X Supplements with different protein sources were evaluated during the rainy seasons. The supplements were supplied in base of 500g per day. The following treatments were used: soybean meal and wheat bran; wheat bran and urea; cottonseed meal (38 % crude protein); wheat bran, cottonseed meal and urea; and the control. The nutritional parameters were evaluated in five animals with initial average weight and age of 219kg and 14 months respectively, fistulated in the esophagus and in the rumen, distributed in five paddocks of 0.3 hectares in a 5 ¡Á 5, incomplete latin square design. There was no effect of supplementation or protein sources over the nutrients intake or dry matter intake from pasture. The dry matter and neutral detergent fiber digestibility obtained in cottonseed meal containing 38% crude protein was inferior to others. There was no effect in the treatments under the pH, which average value was 6.41. The higher ruminal concentration of ammonia was to treatment with wheat bran and urea, that contained the highest value of urea when compared to the other treatments. There was no negative effect of supplementation (500g per day) or protein sources the nutritional parameters evaluated. Objetivou-se avaliar suplementos formulados com diferentes fontes de prote¨ªna fornecidos a bovinos no per¨ªodo das ¨¢guas, na quantidade de 500g/dia. Utilizaram-se as seguintes mat¨¦rias primas na formula  o dos suplementos: farelo de soja e farelo de trigo; farelo de trigo e ureia; farelo de algod o (38 % de prote¨ªna bruta); farelo de trigo, farelo de algod o e ureia; e o testemunha (sal mineral). As vari¨¢veis nutricionais foram avaliadas em cinco animais com idade e peso m¨¦dios iniciais de 14 meses e 219kg, fistulados no es fago e no r¨²men, distribu¨ªdos em cinco piquetes de 0,3 hectares, com utiliza  o do delineamento em quadrado latino 5x5 incompleto. N o houve efeito da suplementa  o ou das fontes de prote¨ªna sobre o consumo de nutrientes ou consumo de mat¨¦ria seca do pasto. As digestibilidades da mat¨¦ria seca e da fibra em detergente neutro obtidas no tratamento com farelo de algod o com 38 % de prote¨ªna bruta foram inferiores ¨¤s dos demais tratamentos. O pH ruminal n o foi afetado pelos tratamentos, cujo valor m¨¦dio foi de 6,41. A concentra  o de am nia ruminal foi maior para o suplemento com farelo de trigo e ureia. Assim, recomenda-se o fornecimento de suplementos m¨²ltiplos no per¨ªodo das ¨¢guas, na quantidade de 500g/animal/dia, independente da fonte proteica utilizada.
%U http://revistas.ufba.br/index.php/rbspa/article/view/1945