Botanical Composition and In Situ Dry Matter Degradability of Legume- Grass Mixture Pasture Fertilized with Different Amounts of Nitrogen

Authors

  • Numan Kılıçalp Department of Animal Science, Agricultural Faculty, Gaziosmanpaşa Universty, 60240 Taşlıçiftlik, Tokat
  • Mustafa Avcı Department of Crop Science, Faculty of Agricultural Science and Technologies, Ömer Halisdemir Universty, Niğde
  • Hatice Hızlı Department of Animal Science, East Mediterranean Agricultural Research Institute, Adana
  • Rüştü Hatipoğlu Department of Crop Science, Faculty of Agriculture, Cukurova Üniversty, Adana
  • Tugay Ayaşan Department of Animal Science, East Mediterranean Agricultural Research Institute, Adana

DOI:

https://doi.org/10.24925/turjaf.v6i1.16-21.1413

Keywords:

Botanical composition, Dry matter degradability, In-situ, Nitrogen fertilizer, Pasture.

Abstract

This study was conducted to determine the effects of different nitrogen (N) fertilizer levels on botanical composition, dry matter (DM) yield, chemical composition, in situ ruminal DM and NDF degradability and net energy lactation (NEL) of a native legume-grass mixture pasture. Field and degradability trials were arranged in a Complete Randomized Block Design with three replicates. Pasture was fertilized at six levels of N fertilizer (ammonium nitrate, N0, N50, N100, N150, N200 and N250 kg/ha). Three rumen cannulated Holstein Friesian heifers (3-4 year old) were used. Feed samples were incubated for 0, 8, 12, 24, 36, 48, 72 and 96 h. Application of nitrogen fertilizer results indicated that nitrogen fertilizer decreased the legumes ratio (LR) of pasture, approximately 22.4%, Although N fertilizer increased the grass ratio (GR) of pasture approximately 55.8%. Dry matter (DM), Net energy lactation (NEL, Mcal/kg) and ash contents of pasture were increased by increasing N fertilizer level. However, when N fertilizer level increased acid detergent fiber (ADF) concentration of pasture decreased. Application of the different rate of nitrogen fertilizer had no effect on in situ rumen degradability of DM and NDF of pasture. It was also found that there was the significant positive relationship between effective NDF degradability at 48 h. rumen incubation period and different level of N fertilizer. In addition, it was determined that there was a linear and quadratic positive relationship between DM yield and different nitrogen doses. In conclusion, different rates of nitrogen application changed botanical composition, decreased ADF content and increased NEL and effective rumen degradability of neutral detergent fiber (EDNDF 48 h.) of pasture.

Author Biographies

Numan Kılıçalp, Department of Animal Science, Agricultural Faculty, Gaziosmanpaşa Universty, 60240 Taşlıçiftlik, Tokat

Animal nutrition

Mustafa Avcı, Department of Crop Science, Faculty of Agricultural Science and Technologies, Ömer Halisdemir Universty, Niğde

crop science

Hatice Hızlı, Department of Animal Science, East Mediterranean Agricultural Research Institute, Adana

Bio istatistic and animal nutrition

Rüştü Hatipoğlu, Department of Crop Science, Faculty of Agriculture, Cukurova Üniversty, Adana

Crop science

Tugay Ayaşan, Department of Animal Science, East Mediterranean Agricultural Research Institute, Adana

Animal nutrition

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Published

03.02.2018

How to Cite

Kılıçalp, N., Avcı, M., Hızlı, H., Hatipoğlu, R., & Ayaşan, T. (2018). Botanical Composition and In Situ Dry Matter Degradability of Legume- Grass Mixture Pasture Fertilized with Different Amounts of Nitrogen. Turkish Journal of Agriculture - Food Science and Technology, 6(1), 16–21. https://doi.org/10.24925/turjaf.v6i1.16-21.1413

Issue

Section

Animal Production