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English :
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Effect of some storage condition on the nutritive value of corn and barley contained in small ruminant ration
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Arabic :
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تأثير بعض ظروف التخزين على القيمة الغذائية للذرة و الشعير المستخدمة في تغذية المجترات الصغيرة
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| Abstract |
The present study was carried out at Noubaria experimental station, Animal Production Research Institute (APRI), Agriculture Research Center, Ministry of Agriculture. The aim of the work is to study the effect of some storage conditions (temperature and relative humidity) on two grains(corn and barley) common used as one of the main ingredients of the concentrate mixture for ruminants (sheep) during the years 1995 - 1996.
Storage :
Corn and barley grams were stored in a room whereas the temperature was ranged from 20.4 to 30.5 °C and room relative humidity ranged between 45.4 and 54.1 % , while the moisture content of corn and barley was 12.97 and 11.15, respectively. It was raised to 15.10 and 15.20%, respectively by adding water. This study lasted 4 months.
In-vitro trial: -
These trial was conducted to investigate the effect of contaminated corn or barley with aflatoxin on in-vitro dry matter disappearance (IVDMA). The degradation metabolism of aflatoxin was achieved more efficiently in corn compared to barley substrate. Less disappearance of contaminated concentrate feed was observed than those non contaminated.
Experimental animals and rations:
Animals: -
Twenty four Barki sheep aged 8 - 10 months of27.20 Kg average body weight were randomly assigned into four nutritional groups, each of 6 animals. Animals were offered one of the experimental rations ( group feeding).Digestibility and N. balance trials were also carried out using 3 mature male sheep for each experimental rations.
Rations: -
F our experimental rations were examined as follow :
T 1 (control), consisted of 70% of concentrate feed mixture (CFM) containing 30% unconntaminated yellow com and 30% rice straw.
T2 : The previous T 1 but it contained contaminated corn.
T3 (control), consisted of 70% of concentrate feed mixture (CFM)
containing 30% unconntaminated barley and 30% rice straw.
T4 : The previous T3 but it contained contaminated barley.
The following results were observed:
1 - There was a significant direct effect of storage period and daily mean
temperature on total aflatoxin concentration in both grains.
2 - There was no significant effect of relative humidity on total aflatoxin
of both grains because the relative humidity was lower.
3 - The chemical analysis of contaminated grains was affected by aflatoxin where DM, OM, CP and NFE decreased, while moisture content, Ash, EE and CF increased with increasing storage period.
4 - Higher DM, OM, CP, CF, EE and NFE digestion coefficients were obtained for both uncontaminated rations.
5- Higher TDN and DCP values were recorded for aflatoxin uncontaminated barley.
6 - Higher DMI was recorded for aflatoxin free corn and aflatoxin free
barley.
7 - Higher TDNI was recorded for aflatoxin uncontaminated corn, or
barely rations.
8 - Higher DCPI was recorded for aflatoxin uncontaminated barley and
aflatoxin contaminated barley.
9 - The same trend was observed for NB it was increased in ration
contained uncontaminated barley and contaminated barley.
10- Ammonia - N concentration (NH3 - N) and pH were increased as the level of aflatoxin increased in the rations.
11- TVF A' s concentration was increased as the level of aflatoxin
decreased in the rations.
12 - There was an increase in the concentrations of urea and creatinine for
contaminated com or barley rations.
13- The level of total protein and globulin were increased for contaminated com and barley rations, but albumin and AlG ratio were increased for rations aflatoxin free corn and barley.
14- There were an increase in the concentrations of GOT, GPT and ALP of contaminated com and barley rations compared to those uncontaminated. There is incorporation between aflatoxin and liver functions.
15- Aflatoxin free com recorded highest daily gain (129 g) and DMI (1100 g) compared to those contained aflatoxin contaminated rations.
16- The cost of (LE) producing 1 kg gain was lower for uncontaminated barley ration (LE 4.66) followed by uncontaminated corn ration (LE 4.87).
It can be concluded from this study, that aflatoxin affect significantly the performance of ruminants (sheep) for some extend. On the other hand, barley proved to be more utilized efficently than corn in sheep rations.
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| Publication year |
1997
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| Pages |
PP. 79
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
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| Availability number |
565
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| Organization Name |
Animal Production Research Institute (APRI)
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| Country |
Egypt
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Barley.
Feeds.
Humidity.
Maize.
Rations.
Sheep.
Storage.
Temperature.
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| Publication Type |
Master Thesis
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