Ruminal parameters of inocula-donnor cows fed different diets and its effects on forage in vitro digestibility

Authors

  • Vanessa Pillon dos Santos Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Piracicaba, SP
  • Carla Maris Machado Bittar Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Laboratório de Bromatologia, Piracicaba, SP
  • Luiz Gustavo Nussio Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Piracicaba, SP
  • Lucas Silveira Ferreira Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Piracicaba, SP
  • Maity Zopollatto Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Piracicaba, SP
  • Carlos César Alves Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Zootecnia, Laboratório de Bromatologia, Piracicaba, SP

Keywords:

corn silage, pH, rumen environment, short chain fatty acids, sugar cane

Abstract

This study aimed to evaluate the rumen environment of inocula cows donor fed fresh or ensiled sugar cane, and its effects on the in vitro true dry matter (IVTDMD) and organic matter digestibilities (IVTOMD) of fresh sugar cane (FS), sugarcane silage (SS) and corn silage (CS). Two Holstein cows with rumen cannulae were fed diets containing different forage sources: fresh chopped sugarcane and sugarcane silage. Rumen fluid samples were collected for diets resulting rumen conditions evaluation by the determination of pH, ammonia-N and short chain fatty acids (SCFA) molar concentration. For the IVTDMD and IVTOMD determinations, rumen fluid was collected from the animals fed different diets, being the tested forages incubated in quadruplicates during 48h. Significant differences between treatments were observed for the total SCFA molar concentration (P<0.05). Sampling time affected molar concentration of acetic acid and total SCFA, as well as the rumen pH. The DM digestibilities of FS, SS and CS were highest (60.82; 68.36 and 71.79%, respectively) when inoculated in the ruminal conditions containing ES as compared to ruminal conditions resulting from FS (53.90; 54.54 and 62.02%).

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Published

2008-03-14

Issue

Section

ANIMAL NUTRITION

How to Cite

Ruminal parameters of inocula-donnor cows fed different diets and its effects on forage in vitro digestibility. (2008). Bulletin of Animal Husbandry, 65(3), 239-247. http://bia.iz.sp.gov.br/index.php/bia/article/view/1127

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