EFFECT OF PHYSICAL AND CHEMICAL TREATMENTS OF CANOLA MEAL ON SOLUBILITY, DEGRADABILITY AND DIGESTIBILITY OF CRUDE PROTEIN

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EGHBALI KOOZEKANAN M.; KAFILZADEH F.; HOZHABBI F.

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Journal: AGRICULTURAL RESEARCH Year:2008 | Volume:7 | Issue:4 (B) Page(s): 127-139

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Title

EFFECT OF PHYSICAL AND CHEMICAL TREATMENTS OF CANOLA MEAL ON SOLUBILITY, DEGRADABILITY AND DIGESTIBILITY OF CRUDE PROTEIN

Author(s)

EGHBALI KOOZEKANAN M. | KAFILZADEH F. | HOZHABBI F. | Issue Writer Certificate

Keywords

CANOLA MEALQ2

PHYSICAL AND CHEMICAL TREATMENTSQ3

SOLUBILITY AND DEGRADABILITYQ3

Abstract

This study was carried out to compare the effect of different treatments onin vitro solubility, in saccodegradability and in vivo digestibility of CANOLA MEAL protein. Treatments were untreated CANOLA MEAL (To), formaldehyde treated (T1), acetic acid treated (T2) and heat treated CANOLA MEAL (T3). CANOLA MEAL was subjected to in vitro protein fractionation to find out the contribution of different protein fractions A+B1, B2, B3 and C. These fractions were determined on the basis of solubility of CANOLA MEAL protein in three different solvents, phosphate buffer, neutral detergent solvents (NDS) and acid detergent solvents (ADS). Treatments were subjected to nylon bag technique at various intervals (0, 2, 4, 8, 16, 24, 48 hours) using two fistulated sheep. The N residue from nylon bags at any incubation time was determined to measure a, b, and c values and to estimate the effective degradability at different out flow rates.In vitro solubility study showed a significant (p<0.05) decrease in fraction A+B1 while B2 increased as the result of both PHYSICAL AND CHEMICAL TREATMENTS. Fractions B3 and C were not affected by treatments (p>0.05). Results of protein degradability showed that ' a ' was higher (5.74) and ' b ' was lower (76.32) for untreated CANOLA MEAL than for treated meals (p<0.05). There was significant difference between untreated and treated meals in concern to ' c ' value (p<0.05). The effective crude protein degradability decreased significantly 15-19% as the result of either physical or chemical treatments. The effective degradability of To, T1, T2, and T3 was 63.28, 52.15, 53.65 and 51.50, respectively. Apparent CP digestibility was increased (p<0.05) due to PHYSICAL AND CHEMICAL TREATMENTS of CANOLA MEAL. Crude protein digestibility was the highest for T1 (81.43) followed by T2 (80.42), T3 (78.84), and To (73.26). It can be concluded that chemical and heat treatments of CANOLA MEAL increased the portion of un-degradable protein in the rumen by altering the potential degradable fraction (b) and the rate of degradation (c). Despite decline in protein degradability in the rumen, improved protein digestibility in total tract, significantly.

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APA: Copy

EGHBALI KOOZEKANAN, M., KAFILZADEH, F., & HOZHABBI, F.. (2008). EFFECT OF PHYSICAL AND CHEMICAL TREATMENTS OF CANOLA MEAL ON SOLUBILITY, DEGRADABILITY AND DIGESTIBILITY OF CRUDE PROTEIN. AGRICULTURAL RESEARCH, 7(4 (B)), 127-139. SID. https://sid.ir/paper/84783/en

Vancouver: Copy

EGHBALI KOOZEKANAN M., KAFILZADEH F., HOZHABBI F.. EFFECT OF PHYSICAL AND CHEMICAL TREATMENTS OF CANOLA MEAL ON SOLUBILITY, DEGRADABILITY AND DIGESTIBILITY OF CRUDE PROTEIN. AGRICULTURAL RESEARCH[Internet]. 2008;7(4 (B)):127-139. Available from: https://sid.ir/paper/84783/en

IEEE: Copy

M. EGHBALI KOOZEKANAN, F. KAFILZADEH, and F. HOZHABBI, “EFFECT OF PHYSICAL AND CHEMICAL TREATMENTS OF CANOLA MEAL ON SOLUBILITY, DEGRADABILITY AND DIGESTIBILITY OF CRUDE PROTEIN,” AGRICULTURAL RESEARCH, vol. 7, no. 4 (B), pp. 127–139, 2008, [Online]. Available: https://sid.ir/paper/84783/en

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