SciELO - Scientific Electronic Library Online

vol.55 issue3Protein concentrates for bovines: 1. In situ digestibility of dry matter and crude proteinMilk yield of crossbred Holstein ´ Zebu cows supplemented or not with concentrate during the rainy season author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Print version ISSN 0102-0935On-line version ISSN 1678-4162


RODRIGUEZ, N.M. et al. Protein concentrates for bovines: 2. Post-ruminal digestion of protein and dry matter. Arq. Bras. Med. Vet. Zootec. [online]. 2003, vol.55, n.3, pp.324-333. ISSN 0102-0935.

This work aimed to evaluate post ruminal digestion of protein sources, by mobile nylon bags introduced in the duodenum of fistulated steers and collected from faeces. The feedstuffs were previously incubated in the rumen or separated the water soluble fraction before the intestinal digestion test. The soybean meal at 5% passage rate showed the highest ruminal protein degradability (73%) and highest intestinal digestibility (98%). Gluten meal was the least rumen degradable protein (16%) and showed a high digestible undegradable protein (95% if rumen incubated previously). Cottonseed meal and castorbean meal had similar patterns of digestion with total digestible protein of 95% and about 70% of rumen degradability. Rumen incubated palmist meal was less digestible (87% of total digestibility). Animal origin meals were less digestible either in the rumen or in the intestine, with total digestibility of 75% for meat and bone meal, 85% for feather and viscera meal and for fish meal I, 67 % for fish meal II and only 46% for blood meal.

Keywords : bovine; intestine; digestibility; mobile bags; protein source.

        · abstract in Portuguese     · text in Portuguese


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License