|
|
| |
| Articles
by
Afshar Mirzaei-Aghsaghali |
Total Records (
5 ) for
Afshar Mirzaei-Aghsaghali |
|
 |
| |
|
| |
Afshar Mirzaei-Aghsaghali
,
Naser Maheri-sis
,
Ali Mirza-Aghazadeh
,
Amir Reza Safaei
,
Amir-Farhang Houshangi
and
Abolfazl Aghajanzadeh-Golshani
|
| |
The aim of the study was to determine the chemical composition and ruminal
degradation characteristics of two alfalfa varieties including Kareyonge
(KAR) and Hamedani (HAM) grown in West Azerbaijan in Iran, using in
situ technique. The nutritional parameters were Dry Matter (DM), Organic
Matter (OM) and Crude Protein (CP). Nylon bags filled with 5 g of each
forage were suspended in the rumen of three cannulated Gezel rams immediately
before feeding and incubated for 7 different times (0, 4, 8, 16, 24, 48
and 72 h). Parameters for degradation kinetics included readily degraded
fraction, slowly degraded fraction, lag time and fractional rate of passage.
No significant difference found between DM, CP, Ash and Ether Extract
(EE) of two alfalfa varieties although the difference for Crude Fiber
(CF), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) were
significant (p<0.01).The degradability of DM, OM, CP and Effective
Rumen Degradable Protein (ERDP) at a rate of 0.05/h for KAR and HAM varieties
were 54.2, 52.16, 40.1%, 72.57 g kg-1 DM and 56.97, 54.9, 39.25%,
89.4 g kg-1 DM, respectively. Calculations based on in situ
degradability indicate that HAM alfalfa can have a higher inclusion than
KAR alfalfa in diets for ruminants because of lower NDF, greater cell
contents and ERDP. |
|
| |
|
| |
Naser Maheri-Sis
,
Afshar Mirzaei-Aghsaghali
,
Ali Mirza-Aghazadeh
and
Amir Reza Safaei
|
| |
The aim of this experiment was to determine the potential nutritive value of Hamedani (HAM) and Kareyonge (KAR) using the chemical composition, Dry Matter Digestibility (DMD), Organic Matter Digestibility (OMD) and Metabolizable Energy (ME) content. Each of the two alfalfa varieties were offered ad libitum to three Gezel rams. No significant difference found between Dry Matter (DM), Crude Protein (CP), Ash and Ether Extract (EE) contents of two alfalfa varieties, although the difference for Crude Fiber (CF), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) were significant (p<0.001). Dry Matter Intake (DMI), Organic Matter Intake (OMI) and Crude Protein Intake (CPI) were similar in HAM and KAR hays (p>0.05). Dry Matter Digestibility (DMD) and organic matter digestibility in HAM hay were significantly (p<0.01) higher than that of KAR hay, whereas Crude Protein Digestibility (CPD) in HAM hay was similar than that KAR hay (p>0.05). Digestible Organic Matter in Dry Matter (DOMD) and ME intake in HAM were significantly (p<0.01) higher than that KAR hay. Calculations based on in vivo digestibility indicate that HAM alfalfa can have a higher inclusion than of KAR alfalfa in diets for ruminants because of lower cell wall (NDF and ADF) contents, greater DOMD and ME intake. |
|
| |
|
| |
Afshar Mirzaei-Aghsaghali
and
Naser Maheri-Sis
|
| |
The aim of this study is to review effective factors on decrease methane emission by enteric fermentation, mainly by ruminants. Global surface temperatures are predicted to increase between 1 to 6°C during the twenty-first century; primarily due to increased levels of Greenhouse Gases (GHGs) principally carbon dioxide (CO2), methane (CH4) and Nitrous Oxide (N2O) in the atmosphere. Agricultural emissions of methane have recently been estimated at 10.2 million tonnes per year. Of these, approximately two-thirds come from enteric fermentation and one-third from livestock manure. To discuss factors relation to emissions of GHG’s (specific methane gas) from ruminants, we need to divide them in four groups; nutrition, management, biotechnology and microbiology. In this article, we discussed nutritional factors related to emission of methane gases in ruminants. Other factors (factors related to management, biotechnology and microbiology) will discuss in further articles. |
|
|
| |
|
| |
Afshar Mirzaei-Aghsaghali
,
Syed Alireza Syadati
,
Hasan Fathi
,
Sohrab Rasouli
,
Mohammad Sadaghian
and
Mohamad Tarahomi
|
| |
Plant extracts have been used for centuries for various purposes (e.g., traditional
medicine, industrial applications, food preservatives) due to their antimicrobial
properties and because most of them are categorized as Generally Recognized
as Safe (GRAS) for human consumption. The main purpose of ruminant nutritionists
is to manipulate the ruminal microbial ecosystems to improve the efficiency
of converting feed to animal products. The use of feed additives such as antibiotics
has proven to be a useful tool to reduce energy losses (in the form of methane)
and nitrogen (in the form of ammonia). Reported that garlic (Allium sativum)
have many biological activities, such as protective roles in cardiovascular
function, as antihypertensive. garlic can have positive effects on the performance
of different animals. Garlic has various properties including improve nutrient
digestibility, antimicrobial, anti-inflammatory, anti-oxidant and immunostimulant
in animal's nutrition. Thus, this review has discussed the effects of garlic
in ruminants. |
|
|
| |
|
| |
Naser Maheri-Sis
,
Afshar Mirzaei-Aghsaghali
,
Amir Reza Safaei
,
Ali Mirza-Aghazadeh
and
Ghassem Habibi Bibalani
|
| |
The nutritive value of quackgrass (Agropyron repens L.) was evaluated at late maturity. Rumen mixed microbe inoculums were taken from two fistulated Gezel rams. Samples of quackgrass were incubated with rumen fluid to determine gas production. Gas production was measured at 2, 4, 6, 8, 12, 24, 48, 72 and 96 h. The results showed that the Crude Protein (CP), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) content of quackgrass hay were 8.9, 69.5 and 38.3%, respectively. Organic Matter Digestibility (OMD) and Metabolizable Energy (ME) content were 43.54% and 6.58 MJ kg1 DM, respectively. In conclusion, it seems that quackgrass could be used as an efficient ruminant feed. |
|
|
|
|
| |
|
