Effects of protein and energy supplementation of wheat straw-based diets on site of nutrient digestion and nitrogen metabolism of lambs
Article Abstract:
The effects of protein and energy supplementation of diets based on wheat straw were investigated in sheep. Suffolk wethers were surgically fitted with cannulas in the rumen or in the abomasum. The results showed that low-protein diets were compensated for by increasing nitrogen recycling back to the rumen. Nitrogen recycling also occurred in the abomasum but was insufficient, as indicated by increased nitrogen retention in lambs fed high-energy or high-protein diets. Overall, the results showed that nitrogen cycling did not suffice for the protein requirements of growing lambs.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Effect of microbial fermentation on functional specific gravity of small forage particles
Article Abstract:
The effect of gas production during in vitrodigestion on functional specific gravity of forage particles involved the design of two experiments. Experiment 1, using ground alfalfa hay, gas production was found to be directly related with gas associated with particles,however, the gas holding capacity and rate of escape from the particles affected the results. In experiment 2, comparative digestion of bromegrass hay,alfalfa hay, and alfalfa silage, a delay in the increase in specific gravity offorage particles by gas production during fermentation was noted.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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In vitro and in vivo studies of factors affecting digestion of feeds in synthetic fiber bags
Article Abstract:
The different factors influencing microenvironments in the rumen were studied by measuring cellulose disappearance (CD) and dry matter disappearance (DMD) of alfalfa hay enclosed in synthetic fiber bags during rumen fermentation in vitro and in vivo. The kind of fabric and its pore size affected the acidity, CD and DMD in the bags. A pore size of 50 micrometer induced the accumulation of gas and reduced CD and DMD due to reduced pH, which was in turn caused by the lack or absence of fluid exchange with the digesting medium.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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