Effect of Lignosulfonate on Rumen Microbial Degradation of Soybean Meal Protein in Continuous Culture

Stern, M. D.

doi:10.4141/cjas84-140

Cited by 14 publications

(6 citation statements)

References 4 publications

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“…Veen (1986) speculated that slowly fermented proteins and the resultant eradual release of ammonia-N, peptides and branched chain finy acids, promoted the availability of these essential growth factori to cellulolytic bacteria for an extended period of time after feeding. In contrast to our results, others have reoorted a decrease in fiber digestibility when SM in corn-based diets was treated with LSO3, and attributed this to a deficiency of ammonia-N for microbial protein synthesis (Windschitl and Stern 1988;Stern 1984). This apparent inconsistency may be due to our use of barley, which is more rapidly and efficiently colonized by rumen microbes ihun i, .o.n (McAllister et al 1990b) resulting in a more rapid digestion of barley protein and higher production of ammonia with barley-based than corn-based diets.…”

contrasting

confidence: 54%

Comparison of lignosulfonate-treated canola meal and soybean meal as rumen undegradable protein supplements for lambs

Stanford¹,

McAllister²,

Xu³

et al. 1995

Can. J. Anim. Sci.

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contrasting

confidence: 54%

Comparison of lignosulfonate-treated canola meal and soybean meal as rumen undegradable protein supplements for lambs

Stanford¹,

McAllister²,

Xu³

et al. 1995

Can. J. Anim. Sci.

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“…Moreover, they appeared to reflect increased apparent digestibilities of the NDF and ADF components of the diets supplemented with LSO 3 CM compared with the other 2 treatments. This finding of increased apparent digestibility of NDF and ADF for diets supplemented with LSO 3 CM compared with those supplemented with UCM or HTCM indicated that the ammonia N levels were not limiting fiber digestion as they were in the previous studies of Stern (1984) and Windschitl and Stern (1988b). The increase in fecal N losses for cows fed the LSO 3 CM supplement reflected the lower protein degradability associated with feeding that supplement.…”

Section: Discussionmentioning

confidence: 55%

Heat- and Lignosulfonate-Treated Canola Meal as a Source of Ruminal Undegradable Protein for Lactating Dairy Cows

Wright¹,

Keyserlingk²,

Swift

et al. 2005

Journal of Dairy Science

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This experiment used 18 lactating Holstein cows in a 3 x 3 Latin square replicated 6 times to determine the effectiveness of processing with moist heat or moist heat combined with lignosulfonate (LSO3) for increasing the ruminal undegradable fraction of canola meal for use as a protein supplement for lactating dairy cows. Diets were formulated to be isonitrogenous and contained one of 3 forms of canola meal; untreated canola meal (UCM), heat-treated canola meal (HTCM) or heat-and LSO3-treated canola meal (LSO3CM). Total collection of urine and feces was taken from each cow during the last 5 d of each 42-d experimental period. Milk production was greater for cows fed the LSO3CM diet (36.6 kg/d) than for cows fed the UCM diet (34.8 kg/d) but did not differ from cows fed the HTCM diet (35.3 kg/d). Digestibility of crude protein was lower for cows supplemented with LSO3CM and they had reduced concentrations of ruminal ammonia N, blood urea N, and milk urea N compared with cows supplemented with UCM or HTCM. Dry matter intake and apparent digestibilities of neutral and acid detergent fiber were increased in cows fed the LSO3CM diet. Urinary N excretion (as % of N intake) was reduced in cows fed the LSO3CM diet. These results indicate that moist heat combined with LSO3 treatment of canola meal was effective in increasing the proportion of crude protein digested in the lower digestive tract of lactating cows and was therefore used more effectively as a source of protein than UCM or HTCM.

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“…The most commonly used process to protect soybean protein involves the application of heat, either directly or in the process of pelleting or extrusion. Heat treatment of soybean meal (SBM) reduces crude protein (CP) solubility and rumen ammonia levels (Tagari et al 1962), reduces rumen in situ nitrogen (N) degradation and augments flow of dietary amino acids to the small intestine (Glimp et al 1967 (Stern 1984;Cleale et al l987a,b). Furrhermore, whole blood from slaughter houses is a reusable by-product due to a high protein content as well as low rumen degradability when heated (Orskov et al 1980;Loerch et al 1983).…”

mentioning

confidence: 99%

Rumen protection of heat-treated soybean proteins

Mosimanyana¹,

Mowat²

1992

Can. J. Anim. Sci.

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. 1992. Rumen protection of heat-treated soybean proteins. Can. J. Anim. . The effects of processing variables on soybean crude protein (CP) ruminal degradation were investigated. Soybean meal (SBM) was heated ina forced-air oven (90"C, I h) withblood (0,5, 10 and zo'% dry matter; and/or xylose (3 mol mol-1 SBM-blood lysine) in a randomized complete block design. In another experiment, whole soybeans were utilized using the following treatments: raw; roasted (in Gem Co. unit exit temperature 150'C) and steeped for 0 or 2 h; roasted, flaked (exit temperature 111"C) and steeped for 0, 1, 2,3 h or I h with 4% xylose and/or l0% blood.Solubility of SBM CP was reduced (P<0.01) by the addition of xylose, without adverse effects on pepsin-digestible CP and acid detergent insoluble nitrogen. ln situ degradation of CP (EDCP). assuming uiurrug."rut. of 57ohr,of SBMwasreduce0,01) par l'apport de xylose, sans effet n6gatif sur la pb digestible )r la pepsine, ni sur I'azote insoluble au ddtergent acide. La d6gradation in situ de MATERIALS AND METHODS TreatmentsSoybean meal was hydrated with distilled water and sodium hydroxide to adjust moisture content (20%) and pH (8.5) (Cleale et al. 1987a). Duplicate samples (150 g DM basis) were mixed with fresh bovine blood at 0, 5, 10, and20% (DM basis) and xylose (0 and 3 mol mol-r lysine). Blood and SBM were assumed to contain 9.7 and3.2% lysine, respectively (National Research Council 1985).Samples were heated in9 x 12 x 5-cm aluminum pans at 90'C for I h in a forced-air oven. Following heating, samples were cooled to room temperature (25 "C) and allowed to air dry for 72 h before being ground through a 5-mm screen.In a second experiment, whole soybeans were employed. In the roasting system at Miller Farms

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Effect of Lignosulfonate on Rumen Microbial Degradation of Soybean Meal Protein in Continuous Culture

Cited by 14 publications

References 4 publications

Comparison of lignosulfonate-treated canola meal and soybean meal as rumen undegradable protein supplements for lambs

Comparison of lignosulfonate-treated canola meal and soybean meal as rumen undegradable protein supplements for lambs

Heat- and Lignosulfonate-Treated Canola Meal as a Source of Ruminal Undegradable Protein for Lactating Dairy Cows

Rumen protection of heat-treated soybean proteins

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