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Journal of Animal and Veterinary Advances
Year: 2011 | Volume: 10 | Issue: 15 | Page No.: 1927-1933
DOI: 10.3923/javaa.2011.1927.1933  
Protein Requirement of Thai Native Cattle Compared with Meta-Analysis of Bos indicus Cattle
P. Paengkoum , S. Thongruand , K. Kamkajon and S. Paengkoum
 
Abstract: The objective of this study was to determine protein requirement of Thai native cattle compared with the meta-analysis of Bos indicus. The 24 Thai native cattle with body weight of 134 + 11.2 kg were arranged in a randomized block design with 8 replications and 3 treatments. Cattle were fed with total mixed ratio consisted 3 levels of protein (6.0, 9.0 and 12.0%). The meta-analysis of protein requirement for maintenance and for growth of Thai native and Brahman cattle were used to compare with the experiment. A database from 48 observations of trials conducted under diverse feeding condition in Thailand was subjected to regression analysis using a linear model. Dry matter, organic mater, crude protein and Neutral Detergent Fiber (NDF) digestibility, N absorption and N retention increased (p<0.05) with increasing levels of CP. Prediction equation CP intake (CPI, gCP kg‾1 BW0.75) with relation to Average Daily Gain (ADG, g kg‾1 BW0.75) was CPI = 0.413+4.28 (R2 = 0.896, SE = 0.774, p<0.05, n = 24). It can be explained that the CP for maintenance of Thai native cattle is 4.28 gCP kg‾1 BW0.75. Results from the meta-analysis, the relation between Nitrogen Intake (NI, g kg‾1 BW0.75) and Nitrogen Retention (NR, g kg‾1 BW0.75) of Thai native were NR = -0.41 (SE = 0.16)+0.58 (SE = 0.10) NI (n = 26, R2 = 0.57, RSD = 0.27, p<0.05) and Brahman were NR = -0.34 (SE = 0.1)+ 0.70 (SE = 0.04) NI (n = 14, R2 = 0.96, RSD = 0.20, p<0.05). The relation between NI and Dry Matte Digestibility (DMD, %) for Thai native were DMD = 48.90 (SE = 4.92)+11.10 (SE = 3.02) NI (n = 12, R2 = 0.57, RSD = 4.90, p<0.05) and Brahman were DMD = 48.55 (SE = 6.44)+7.16 (SE = 1.94) NI (n = 11, R2 = 0.60, RSD = 7.47, p<0.05). The relation between NI and Organic Matter Digestibility (OMD, %) for Thai native were OMD = 56.68 (SE = 2.75) + 5.27 (SE = 1.72) NI (n = 12, R2 = 0.48, RSD = 2.78, p<0.05), Brahman were OMD = 5 0.79 (SE = 3.75)+6.18 (SE = 1.13 ) NI (n = 11, R2 = 0.77, RSD = 4.35, p<0.05). The relation between NI and NDF Digestibility (NDFD,%) for Thai native were NDFD = 50.94 (SE = 1.16) + 4.26 (SE = 0.70) NI (n = 8, R2 = 0.86, RSD = 1.01, p<0.05), Brahman were NDFD = 51.52 (SE = 2.80) + 5.60 (SE = 0.79) NI (n = 9, R2 = 0.88, RSD = 2.80, p<0.05). The relationship between NI and CP digestibility (CPD, %) for Thai native were CPD = 47.86 (SE = 4.50)+13.09 (SE = 2.76) NI (n = 11, R2 = 0.71, RSD = 4.29, p<0.05). The relationship between NI and Blood Urea Nitrogen (BUN, mg %) for Thai native were BUN = 7.56 (SE = 1.36) + 0.09 (SE = 0.11)NI (n = 9, R2 = 0.08, RSD = 2.86, p<0.05), Brahman were BUN = 14.17 (SE = 3.04)-1.21 (SE = 0.95) NI (n = 4, R2 = 0.45, RSD = 2.75, p<0.05). The relationship between NI and ruminal Ammonia Nitrogen (NH3N, mg%) for Thai native were NH3N = -7.99 (SE = 3.07) + 12.14 (SE = 1.84) NI (n = 7, R2 = 0.90, RSD = 1.56, p<0.05. The results indicated that protein requirement by nitrogen intake of Thai native and Brahman have relation to nitrogen retention, DMD, OMD, NDFD, ADFD, CPD, BUN and NH3N but the potential of prediction were indicated to R2 value.
 
How to cite this article:
P. Paengkoum, S. Thongruand, K. Kamkajon and S. Paengkoum, 2011. Protein Requirement of Thai Native Cattle Compared with Meta-Analysis of Bos indicus Cattle. Journal of Animal and Veterinary Advances, 10: 1927-1933.
DOI: 10.3923/javaa.2011.1927.1933
URL: http://medwelljournals.com/abstract/?doi=javaa.2011.1927.1933