Utilization of Processed Sorghum Grain Proteins by Steers

Potter, G.D.; McNeill, John W.; Riggs, J. K.

doi:10.2527/jas1971.323540x

Cited by 16 publications

(6 citation statements)

References 3 publications

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“…For this reason, we felt that the best estimate of bacterial N:total abomasal N might be accomplished by the summation equation technique (Ely et al, 1967), based on the leucine and lysine content of feed, bacteria and abomasal digesta. This method has been employed satisfactorily to determine bacterial N: total abomasal N in steers fed sorghum grain diets (Potter et al, 1971;Rahnema et al, 1979). Monensin decreased (P<.07) the proportion of abomasal N of bacterial origin (52 vs 58%) and increased (P<.06) that of ruminally undegraded feed origin (46 vs 40%; table 5).…”

Section: Resultsmentioning

confidence: 99%

Effects of Monensin on site and Extent of Whole Corn Digestion and Bacterial Protein Synthesis in Beef Steers2

Muntifering

Theurer

Noon

1981

Journal of Animal Science

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Monensin was fed at 0 and 33 ppm in a crossover trial designed to determine the effect of this compound on ruminal and postruminal utilization of a corn-based diet and bacterial protein synthesis in abomasally fistulated steers. Monensin decreased (P greater than .10) ruminal true digestion of organic matter (OMc, corrected for bacterial cell synthesis) and apparent ruminal digestion of starch by 19%, but had not effect on apparent total tract digestion of OM or starch. Apparent ruminal and total tract digestibilities of crude protein (CP) were unchanged. Monensin decreased (P greater than .07) the contribution of bacterial N to total abomasal N (52 vs 58%), and increased (P greater than .06) the contribution of ruminally undegraded feed N (46 vs 40%), but had not effect on total N or amino acids recovered from the abomasum. Efficiency of bacterial protein synthesis (grams bacterial CP/100 g ruminally digested OMc) was unchanged. Monensin decreased (P greater than .05) the fraction of bacterial N to total N digested postruminally (42 vs 50%) and increased (P greater than .05) the contribution of ruminally undegraded feed N digested postruminally (58 vs 50%). Monensin caused a greater proportion of feed N and starch to be digested in the intestines than in the rumen (with possibly greater resultant metabolic efficiency), and this may account for some of the benefits obtained from feeding this compound with high grain diets.

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Section: Resultsmentioning

confidence: 99%

Effects of Monensin on site and Extent of Whole Corn Digestion and Bacterial Protein Synthesis in Beef Steers2

Muntifering

Theurer

Noon

1981

Journal of Animal Science

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“…Many processes have been studied intensively as strategies to alter the site of degradation and absorption of AA specific to the animals needs. When utilizing a sorghum-based ration for finishing steers, Potter et al (1971) displayed that reconstituting and steam flaking increased ruminal breakdown while micronizing (dry heating proceeded by loose rolling) decreased ruminal degradation when compared to dry grinding. Heat is applied in a variety of feed processing techniques and can prove beneficial in decreasing ruminal degradation without also inhibiting intestinal digestibility, if the Maillard reaction can be controlled.…”

Section: Factors That Affect Ruminal Protein Degradationmentioning

confidence: 99%

266 Evaluation of peri-partum supplementation of methionine hydroxy analog on cow-calf performance.

Redifer

Tucker²,

Loy

et al. 2018

Journal of Animal Science

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“…1985b; Rooney and F'flugfelder, 1986;Theurer, 1986). Utilization of carbohydrates and N by rumen microorganisms can vary among grains (Kay et al, 1972;Theurer, 1984;Spicer et al, 1986) and is altered by grain processing (Hale et al, 1966;Potter et al, 1971;Brethour, 1984;Rahnema et al, 1987% Xiong et al, 1990.…”

mentioning

confidence: 99%

Nitrogen utilization in growing lambs: effects of grain (starch) and protein sources with various rates of ruminal degradation.

Matras

Bartle

Preston

1991

Journal of Animal Science

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The potential interaction between grain (starch) and protein sources with varying ruminal degradation rates on N utilization in growing lambs was evaluated. Three grain sources with varying ruminal degradation rates, (barley greater than steam-flaked sorghum [SFSG] greater than dry-rolled sorghum [DRSG]) and three protein sources (urea greater than a 50:25:25 mixture of urea: blood meal:corn gluten meal [N basis, U/BC] greater than 50:50 mixture of meal:corn gluten meal [N basis, BC]), were evaluated in a 3 x 3 factorial arrangement. Supplemental protein sources provided 33% of dietary N (CP = 11.0%). For each grain-protein combination, a 3 x 3 Latin square metabolism trial was conducted using two sets of three lambs and three periods. Within-square treatments were 1.4, 1.7 and 2.0 times maintenance intake levels. No interactions were observed (P greater than .2) between dietary treatments and intake level. Grain sources did not differ (P greater than .2) in N balance or the proportion of N retained. Lambs fed urea diets retained less N (3.6 vs 4.2 and 4.1 g/d for urea vs U/BC and BC, respectively; linear, P = .07; quadratic, P = .12) and utilized N less efficiently (43.1 vs 51.9 and 52.5%, respectively; linear, P less than .001; quadratic, P = .10) than lambs fed BC diets. The grain x protein interaction was significant for most variables. Nitrogen utilization was most efficient (24 to 27% of N intake retained) when rapidly degraded sources (barley and urea) and slowly degraded sources (sorghum and BC) were fed together or when U/BC was the supplemental protein source (interaction P less than .08). An advantage was found for selection of starch and protein sources with similar ruminal degradation rates.

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Utilization of Processed Sorghum Grain Proteins by Steers

Cited by 16 publications

References 3 publications

Effects of Monensin on site and Extent of Whole Corn Digestion and Bacterial Protein Synthesis in Beef Steers2

Effects of Monensin on site and Extent of Whole Corn Digestion and Bacterial Protein Synthesis in Beef Steers2

266 Evaluation of peri-partum supplementation of methionine hydroxy analog on cow-calf performance.

Nitrogen utilization in growing lambs: effects of grain (starch) and protein sources with various rates of ruminal degradation.

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