Iranian Journal of Applied Animal Science, Volume (6), No (4), Year (2016-12) , Pages (769-775)

Title : ( In vitro Ruminal Acid Load and Methane Emission Responses to Supplemented Lactating Dairy Cow Diets with Inorganic Compounds Varying in Buffering Capacities )

Authors: MINA JAFARPOUR BOROJENI , Mohsen Danesh Mesgaran , Seyed Alireza Vakili , Abbas Ali Naserian ,

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Using 24 hours in vitro cultures of rumen microorganisms, this study investigates the effect of buffering capacity of 2 inorganic compounds (M1=119.43 and M2=116.50 meq/L) on the in vitro rumen acidogenic value (AV), medium pH, dry matter disappearance (INVDMD) and methane emission of lactating dairy cow diets containing various forage to concentrate ratios as 40:60 (FC40:60) and 30:70 (FC30:70) in a completely randomized design. Inorganic compounds were included in the experimental diets at the rate of 0.0, 10 or 20 g/kg DM. Diet with higher amount of concentrate caused a decline in medium pH, an increase in both AV and IVDMD. The acidogenic value of FC40:6 containing M2 at 20, M1 at 10 and 20 g/kg DM and FC 30:70 plus M1 and M2 at 20 g/kg DM was the lowest. The lowest level of CH 0 4 emission (mL/0.20 g DM) was observed in FC30:70 plus M1 at the rate of 10 g/kg DM, while the highest level belongs to FC40:60 plus M1 at 10 g/kg DM and FC30:70 containing M1 at 20 and M2 at 10 g/kg DM. It has been concluded that the higher buffering capacity of a lactating diet might reduce the rumen acid load and increased IVDMD, while a diet with higher amount of concentrate causes to decline rumen methane emission.

Keywords

, acidogenic value, buffering capacity, dairy cows, methane,
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@article{paperid:1059973,
author = {JAFARPOUR BOROJENI, MINA and Danesh Mesgaran, Mohsen and Vakili, Seyed Alireza and Naserian, Abbas Ali},
title = {In vitro Ruminal Acid Load and Methane Emission Responses to Supplemented Lactating Dairy Cow Diets with Inorganic Compounds Varying in Buffering Capacities},
journal = {Iranian Journal of Applied Animal Science},
year = {2016},
volume = {6},
number = {4},
month = {December},
issn = {2251-628x},
pages = {769--775},
numpages = {6},
keywords = {acidogenic value; buffering capacity; dairy cows; methane; rumen},
}

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%0 Journal Article
%T In vitro Ruminal Acid Load and Methane Emission Responses to Supplemented Lactating Dairy Cow Diets with Inorganic Compounds Varying in Buffering Capacities
%A JAFARPOUR BOROJENI, MINA
%A Danesh Mesgaran, Mohsen
%A Vakili, Seyed Alireza
%A Naserian, Abbas Ali
%J Iranian Journal of Applied Animal Science
%@ 2251-628x
%D 2016

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