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Use of Nylon Bag Technique to Determine Nutritive Value and Degradation
Kinetics of Iranian Alfalfa Varieties |
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Afshar Mirzaei-Aghsaghali,
Naser Maheri-sis,
Ali Mirza-Aghazadeh,
Amir Reza Safaei,
Amir-Farhang Houshangi and Abolfazl Aghajanzadeh-Golshani |
Abstract:
The aim of the study was to determine the chemical composition and ruminal
degradation characteristics of two alfalfa varieties including Kareyonge
(KAR) and Hamedani (HAM) grown in West Azerbaijan in Iran, using in
situ technique. The nutritional parameters were Dry Matter (DM), Organic
Matter (OM) and Crude Protein (CP). Nylon bags filled with 5 g of each
forage were suspended in the rumen of three cannulated Gezel rams immediately
before feeding and incubated for 7 different times (0, 4, 8, 16, 24, 48
and 72 h). Parameters for degradation kinetics included readily degraded
fraction, slowly degraded fraction, lag time and fractional rate of passage.
No significant difference found between DM, CP, Ash and Ether Extract
(EE) of two alfalfa varieties although the difference for Crude Fiber
(CF), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) were
significant (p<0.01).The degradability of DM, OM, CP and Effective
Rumen Degradable Protein (ERDP) at a rate of 0.05/h for KAR and HAM varieties
were 54.2, 52.16, 40.1%, 72.57 g kg-1 DM and 56.97, 54.9, 39.25%,
89.4 g kg-1 DM, respectively. Calculations based on in situ
degradability indicate that HAM alfalfa can have a higher inclusion than
KAR alfalfa in diets for ruminants because of lower NDF, greater cell
contents and ERDP.
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How to cite this article:
Afshar Mirzaei-Aghsaghali, Naser Maheri-sis, Ali Mirza-Aghazadeh, Amir Reza Safaei, Amir-Farhang Houshangi and Abolfazl Aghajanzadeh-Golshani, 2008. Use of Nylon Bag Technique to Determine Nutritive Value and Degradation
Kinetics of Iranian Alfalfa Varieties. Asian Journal of Animal and Veterinary Advances, 3: 214-221.
DOI: 10.3923/ajava.2008.214.221
URL: https://scialert.net/abstract/?doi=ajava.2008.214.221
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