The Effect of Reducing Ration Protein Level Using Commercial Premixes on the Performance and Blood Parameters of Holstein Dairy Cows

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

Khorsand Hadi; Ghalamkari Hamid Reza; Sanei Abas; REZAEI RASOUL; AKBARI AMIR

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Research On Animal Production Year:2020 | Volume:11 | Issue:27 Page(s): 27-34

Download Full-Text

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

View:

660

Download:

Cites:

Information Journal Paper

Title

The Effect of Reducing Ration Protein Level Using Commercial Premixes on the Performance and Blood Parameters of Holstein Dairy Cows

Author(s)

Keywords

Pre-MixedQ1

Bypass ProteinQ1

Feed EfficiencyQ1

Nitrogen EfficiencyQ1

Milk ProductionQ1

Dairy CattleQ1

Abstract

The aim of this experiment was to evaluate the effects of concentrate premixes containing of by-pass proteins (BP) in balanced low protein diets for essential amino acids on performance, blood metabolites and Nitrogen Efficiency of lactation Holstein dairy cows. Twenty-four multiparous Holstein cows (in 3rd parity and DIM 80± 10) randomly were divided to three experimental rations including, 1) control ration with 17. 5% CP based on NRC 2001 recommendations, 2) Low protein ration containing concentrate premix with 16. 5% CP and 3) Low protein ration containing concentrate premix with 15. 5% CP. The ratio of the rumen undegradable protein (RUP) to rumen degradable protein (RDP) in experimental diets was 37: 63 and the ratio lysine to methionine was adjusted by concentrate premix up to 3: 1 and 2. 8: 1 in the diet 16. 5% and 15. 5% CP, respectively. The results showed that the dry matter intake (DMI) increased linearly with a reduction of CP in the diets (P=0. 048). The highest 3. 5% fat corrected milk yield (FCM) and energy corrected milk (ECM) was recorded for 16. 5% CP diet that showed a significant difference than other groups (P=0. 038). Milk protein yield and milk Nitrogen Efficiency (MNE) showed significantl difference between control and 16% CP diets (P=0. 05 and P=0. 03, respectively). This study showed that decreased in CP levels compared to recommended NRC values (2001), and providing an optimal ratio of limiting amino acids can increase nitrogen yield while maintaining production.

Cites

No record.

References

No record.

Cite

APA: Copy

Khorsand, Hadi, Ghalamkari, Hamid Reza, Sanei, Abas, REZAEI, RASOUL, & AKBARI, AMIR. (2020). The Effect of Reducing Ration Protein Level Using Commercial Premixes on the Performance and Blood Parameters of Holstein Dairy Cows. RESEARCH ON ANIMAL PRODUCTION, 11(27 ), 27-34. SID. https://sid.ir/paper/405381/en

Vancouver: Copy

Khorsand Hadi, Ghalamkari Hamid Reza, Sanei Abas, REZAEI RASOUL, AKBARI AMIR. The Effect of Reducing Ration Protein Level Using Commercial Premixes on the Performance and Blood Parameters of Holstein Dairy Cows. RESEARCH ON ANIMAL PRODUCTION[Internet]. 2020;11(27 ):27-34. Available from: https://sid.ir/paper/405381/en

IEEE: Copy

Hadi Khorsand, Hamid Reza Ghalamkari, Abas Sanei, RASOUL REZAEI, and AMIR AKBARI, “The Effect of Reducing Ration Protein Level Using Commercial Premixes on the Performance and Blood Parameters of Holstein Dairy Cows,” RESEARCH ON ANIMAL PRODUCTION, vol. 11, no. 27 , pp. 27–34, 2020, [Online]. Available: https://sid.ir/paper/405381/en

Related Journal Papers