Effects of Dietary Starch and Crude Protein Levels on Milk Production and Composition of Dairy Cows Fed High Concentrate Diet

Authors

  • Mustafa Güçlü Sucak Department of Laboratory and Veterinary Health, Kahta Vocational School, Adıyaman University, 02040 Adıyaman
  • Uğur Serbester Department of Animal Science, Faculty of Agriculture, Çukurova University, 01330 Adana
  • Murat Görgülü Department of Animal Science, Faculty of Agriculture, Çukurova University, 01330 Adana, Turkey (Retired)

DOI:

https://doi.org/10.24925/turjaf.v5i6.563-567.718

Keywords:

Dairy cattle, Milk composition, Protein, Starch, Wheat straw

Abstract

Effects of two dietary levels of starch and crude protein on performance of dairy cow fed low roughage level (70:30 concentrate to roughage) were investigated. Twenty eight Holstein cows were randomly assigned to one of four dietary treatments in a 2 x 2 factorial arrangement. Factors were two dietary level of starch (14% and 22%) and crude protein (15% and 18%). Wheat straw was used as sole roughage source. The study was continued 6 weeks. Dry matter intake was not affected (P>0.05) by the dietary treatments in the study. Milk and protein yield (kg/d) were higher (P<0.05) with higher dietary crude protein level at each starch level. Milk urea concentrations were affected (P<0.01) by dietary protein levels with a value being higher by high dietary protein level. Nitrogen efficiency (Milk N/N intake) was decreased by increasing dietary crude protein level in the diet (P< 0.01). In conclusion, the cows fed TMR containing low level of wheat straw responded better when dietary protein increased. But, efficiency of N use decreased and N excretion to the environment increased.

Author Biographies

Mustafa Güçlü Sucak, Department of Laboratory and Veterinary Health, Kahta Vocational School, Adıyaman University, 02040 Adıyaman

Adıyaman Üniversitesi Kahta MYO Veteriner Bölümü Başkanı

Uğur Serbester, Department of Animal Science, Faculty of Agriculture, Çukurova University, 01330 Adana

Çukurova Üniversitesi zootekni hayvan besleme bölümü

Murat Görgülü, Department of Animal Science, Faculty of Agriculture, Çukurova University, 01330 Adana, Turkey (Retired)

Çukurova Üniversitesi zootekni hayvan besleme bölümü

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Published

12.07.2017

How to Cite

Sucak, M. G., Serbester, U., & Görgülü, M. (2017). Effects of Dietary Starch and Crude Protein Levels on Milk Production and Composition of Dairy Cows Fed High Concentrate Diet. Turkish Journal of Agriculture - Food Science and Technology, 5(6), 563–567. https://doi.org/10.24925/turjaf.v5i6.563-567.718

Issue

Section

Animal Production

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