Effects of alfalfa maturity and cutting times on availability of alfalfa hay protein for dairy cows

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Yousefinezhad Safora; FATAHNIA FARSHID; RASHNAVADI MEHDI; MOUSAVI SEYYED GHOLAMREZA; Taasoli Golnaz

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Journal: Iranian Journal of Animal Science Year:2016 | Volume:47 | Issue:2 Page(s): 185-191

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Title

Effects of alfalfa maturity and cutting times on availability of alfalfa hay protein for dairy cows

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Keywords

AlfalfaQ2

degradabilityQ1

microbial proteinQ2

protein evaluationQ2

Abstract

This experiment was conducted to consider the effects of maturity and cutting time on chemical composition and available protein content of Alfalfa hay for dairy cows. . Alfalfa hay harvested at two maturity stages (Pre-bloom and Early bloom) and two cutting times (Morning and Afternoon). Available protein was predicted using NRC (2001) and DVE/OEB (1994) models. In the NRC model (2001), Alfalfa hay harvested pre-bloom and in the afternoon had higher microbial protein synthesized in the rumen from energy and absorbable microbial protein and lower ruminal degraded protein balance (P<0. 05). But, metabolizable protein content was not affected by maturity stage and cutting time (P>0. 05). In the DVE/OEB model, pre-bloom Alfalfa harvested in the afternoon had higher fermentable organic matter, microbial protein synthesized from organic matter and absorbable microbial protein and lower ruminal degraded protein balance (P<0. 05). In conclusion, pre-bloom Alfalfa hay harvested in the afternoon had higher available protein for dairy cows.

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APA: Copy

Yousefinezhad, Safora, FATAHNIA, FARSHID, RASHNAVADI, MEHDI, MOUSAVI, SEYYED GHOLAMREZA, & Taasoli, Golnaz. (2016). Effects of alfalfa maturity and cutting times on availability of alfalfa hay protein for dairy cows. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 47(2 ), 185-191. SID. https://sid.ir/paper/193557/en

Vancouver: Copy

Yousefinezhad Safora, FATAHNIA FARSHID, RASHNAVADI MEHDI, MOUSAVI SEYYED GHOLAMREZA, Taasoli Golnaz. Effects of alfalfa maturity and cutting times on availability of alfalfa hay protein for dairy cows. IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2016;47(2 ):185-191. Available from: https://sid.ir/paper/193557/en

IEEE: Copy

Safora Yousefinezhad, FARSHID FATAHNIA, MEHDI RASHNAVADI, SEYYED GHOLAMREZA MOUSAVI, and Golnaz Taasoli, “Effects of alfalfa maturity and cutting times on availability of alfalfa hay protein for dairy cows,” IRANIAN JOURNAL OF ANIMAL SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 47, no. 2 , pp. 185–191, 2016, [Online]. Available: https://sid.ir/paper/193557/en

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