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Evaluation of Super Napier (Pennisetum purpureum × P. glaucum) as Ruminant Feedstuff by In vitro and In situ Methods

Indian Agricultural Research Journals

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Title Evaluation of Super Napier (Pennisetum purpureum × P. glaucum) as Ruminant Feedstuff by In vitro and In situ Methods
 
Creator K. M. Rashmi
T. M. Prabhu
B.N. Suresh
K.P. Chethan
K. B. Sathisha
 
Subject Chemical composition, In vitro digestibility, In situ degradability, Super Napier
 
Description ABSTRACT
In India, the ruminant animal production faces challenges due to insufficient availability of feedstuffs and low-quality of forage crops. To address these issues, cultivating high-yielding, nutritious varieties like Super napier (Pennisetum purpureum × P. glaucum) and conserving them is vital to sustain ruminant farming.  Hence, an attempt was made to assess Super Napier (SN) hay as ruminant feedstuff byin vitro and in situ methods. Initially, SN hay was subjected to rumen in vitro gas production study (RIVGP), with cumulative gas production measured at various time intervals up to 96 h post incubation. Subsequently, invitro dry matter digestibility (IVDMD) and neutral detergent fiber digestibility (NDFD) were determined using a modified two-stage in vitro technique. Further, SN hay was subjected to a 96 h ruminal incubation to evaluate dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) degradability using in situ method. The chemical analysis of SN hay revealedthat it contains organic matter (OM)- 87.23%, CP - 9.96%, NDF - 72.75% and ADF - 47.44% on dry matter basis. In the rumen kinetics study, the potential gas production (D) was 56.96 mL, with the rate of gas production (c) 0.035 h-1. The IVDMD and NDFD of SN hay were 68.66% and 40.52%, respectively. The potential in situ degradability and degradation rate for DM, CP, and NDF of SN hay were 68.47 % at 0.049 h-1, 73.04% at 0.048 h-1 and 62.03% at 0.044 h-1, respectively. Further, the estimated metabolizable energy (ME) of SN hay was 7.22 MJ/kg DM. Thus, SN hay with good amount of gas production, in vitro DM and NDF digestibility and in situ DM, CP and NDF degradability can be considered as a good source of basal fodder feedstuff for ruminant production.
 
Publisher Animal Nutrition Society of India
 
Date 2024-06-03
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAN/article/view/144824
 
Source Indian Journal of Animal Nutrition; Vol. 41 No. 1 (2024)
2231-6744
0970-3209
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAN/article/view/144824/54688
 
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