Evaluation of Protective Agents Applied to Soybean Meal and Fed to Cattle II. Feedlot Trials

Thomas, Elvin E.; Trenkle, Allen; Burroughs, Wise

doi:10.2527/jas1979.4951346x

Cited by 25 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Treating CM with SBM has been reported in a number of formaldehyde and blood did not affect this studies (Mahadevan et al 1983; Phillips rapidly degradable fraction. No differences l98l ; Thomas et al 1979). Treatment of were observed in rate constants for DM CM with formalin has also been shown to which averaged 4.7Volh; the EDDM of FM be effective in reducing rumen degradation (approximately 2OVo) was significantly by Dixon et al (1981) who observed lower lower than that observed for CM.…”

Section: Canadian Journal Of Animal Sciencementioning

confidence: 85%

In Situ Dry Matter and Protein Degradation of Various Protein Sources in Dairy Cattle

Ha¹,

Kennelly²

1984

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Atbertar6G 2PsHe., J. K. aNo KnNNrr-r-v, J. J. 1984 dans le rumen, a disparu plus lentement que I'azote du TCC. Par contre, la d6g-radation de l'azote 6tait plus lente pour la LD que pour les deux tourteaux. L'azote de la FP a disparu sensiblement moins vite que celui des autres prot6ines. Le traitement du TCC i la formaline est particulidrement efficace pour ce qui est de r6duire la rapidit6 de disparition de 1'azote et de la matidre sdche dans les sacs, mais pas I'addition de sang. D'aprds la vitesse de disparition de I'azote, la d6gradabilit6 des protdines est respectivement de 53,6, 65,8,41,4,28,9,65,5,22,2,71,2et70

show abstract

Section: Canadian Journal Of Animal Sciencementioning

confidence: 85%

In Situ Dry Matter and Protein Degradation of Various Protein Sources in Dairy Cattle

Ha¹,

Kennelly²

1984

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…The fact that protected protein passes through the rumen undegraded and reaches the lower gut for digestion does not necessarily mean that it is digested efficiently nor, once digested, that the amino acid profile is such that it provides a better balance of amino acids for milk production and growth (0rskov et al 1980). The work of Verite & Journet (1977) and Thomas et al (1979) who obtained positive resposes in milk production and growth respectively at low levels of formaldehyde treatment (200 -233.5 mmol/kg protein) also lends support to the hypothesis that amino acid availability and balance in protected proteins could be important. The present paper describes methods developed to determine amino acid absorption-availability in vivo and the results obtained with protein crosslinked using different aldehydes.…”

mentioning

confidence: 82%

Nutritional availability of amino acids from protein cross-linked to protect against degradation in the rumen

1984

View full text Add to dashboard Cite

I. Casein was labelled with pairs of radioactive amino acids, lysine, tyrosine and leucine, one with I4C and the other with SH, by jugular infusion into lactating goats followed by isolation of the double-labelled casein from the milk. Total milk protein was similarly labelled by jugular infusion of [s6S]cystine. U-14C-labelled fraction-1 leaf protein was isolated from lucerne (Medicago sativa) grown in an atmosphere of 14C0,.2. The proteins were treated withdifferent levels(333 and667 mmol/kgprotein) offormaldehyde, glutaraldehyde and glyoxal.3. Absorption from the small intestine was measured in sheep with fistulas in the abomasum and terminal ileum, using Cr-EDTA as the digesta flow marker, by introducing radioactive casein into the abomasum.4. Lysine, tyrosine and cystine became increasingly unavailable for absorption from the small intestine of sheep with increasing levels of aldehyde. At the lower level (333 mmol/kg) the proportions of the amino acids that were unavailable were 0.192, 0.051 and 0.123 respectively. At the higher level of formaldehyde (667 mmol/kg) the corresponding values were 0.335, 0.201 and 0.432 respectively. Leucine was not made unavailable with formaldehyde. 5. The proportions of lysine, tyrosine and leucine that were unavailable were higher, on a molar basis, after treatment of the proteins with the dialdehydes glutaraldehyde and glyoxal than after treatment with formaldehyde. However, the extent of protein protection provided by the dialdehydes in the rumen, measured using an in vitro procedure, was lower.

show abstract

“…The result would be more efficient utilization of protein and perhaps superior performance of the ruminants involved (Broster and Oldham 1981). At-tempts have been made to increase the quantity of protein reaching the small intestine of ruminants by treatment with heat (Thomas et al 1979), formaldehyde (Sharma and Ingalls 1974) and tannins (Nishimuta et al 1914). However, results with animals have been inconsistent.…”

mentioning

confidence: 99%

Methods for Protecting Soybean and Canola Proteins From Degradation in the Rumen

Mir¹,

Macleod²,

Buchanan-Smith³

et al. 1984

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Soybean and canola proteins were treated with heat, formaldehyde (HCHO), sodium hydroxide (NaOH), whole fresh blood (BL) or fish hydrolysate (FH). Effect of these treatments on in situ protein degradability was measured by the nylon bag technique using fisulated steers. All treatments with the exception of heat were effective in protecting protein of soybeans and soybean meal (SBM). Canola seed protein was protected with heat at 110 °C for 2 h and with chemical treatments; all treatments were effective in protecting canola meal (CM) protein. Essential amino acid profiles of these residues from HCHO- or NaOH-treated SBM were not different from untreated SBM residue but increases in some essential amino acids were found in BL-treated SBM residue. Rat bioassays of residues from nylon bag studies revealed that protein quality of SBM, as indicated by net protein ratio, was significantly reduced (P < 0.05) by addition of HCHO, NaOH, BL or FH. Protein digestibility of SBM and CM was decreased by HCHO treatment but not by other treatments. NaOH treatment of CM had no effect on protein quality but HCHO, BL or FH treatments significantly improved (P < 0.05) protein quality of CM residue compared with untreated CM residue. These studies demonstrate that soybean and canola proteins can be effectively protected from degradation in the rumen by NaOH, BL or FH treatment without adverse effect on protein digestibility. Key words: Formaldehyde, sodium hydroxide, blood, fish hydrolysate, soybean, canola

show abstract

Evaluation of Protective Agents Applied to Soybean Meal and Fed to Cattle II. Feedlot Trials

Cited by 25 publications

References 0 publications

In Situ Dry Matter and Protein Degradation of Various Protein Sources in Dairy Cattle

In Situ Dry Matter and Protein Degradation of Various Protein Sources in Dairy Cattle

Nutritional availability of amino acids from protein cross-linked to protect against degradation in the rumen

Methods for Protecting Soybean and Canola Proteins From Degradation in the Rumen

Contact Info

Product

Resources

About