- Araştırmayı ve ögrenmeyi seven biriyimedit
Atlar, fiziksel aktiviteleri yuksek olmasina ragmen mide yapilarindan dolayi dusuk enerjili ve selulozca zengin yemlerle beslenmekte ve ortalama 1‐2 saatte bir yem tuketmek zorundadirlar. Fakat atcilik sporunun gelismesiyle birlikte,... more
Atlar, fiziksel aktiviteleri yuksek olmasina ragmen mide yapilarindan dolayi dusuk enerjili ve selulozca zengin yemlerle beslenmekte ve ortalama 1‐2 saatte bir yem tuketmek zorundadirlar. Fakat atcilik sporunun gelismesiyle birlikte, enerji ihtiyaclarinin artmasi, atlarin nisasta ve seker icerigi yuksek rasyonlar ile beslenmesinin onemini on plana cikarmistir. Atlarin, yemlerinde bulunan nisasta ve seker konsantrasyonunun yukseltilmesi ile insulin direnci, obezite, laminitis ve osteokondrozis gibi sindirimsel ve metabolik rahatsizliklarin gorulme insidensi de artmaktadir. Atlarin tukettikleri yemin nisasta ve seker iceriginin tespit edilip, kontrol edilebilmesi amaciyla Glisemik Indeks (GI) degeri uzerinde durulmaktadir. GI, yemlerin belli bir zaman diliminde, kan glikoz seviyesini artirma potansiyeli baz alinarak, yemlerin standart bir yeme gore siniflandirilmasinda kullanilan ve yuzdelik olarak ifade edilen bir indekstir. Atlarda, GI hesaplamasinda standart olarak en cok gl...
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This study was conducted to determine the comparative effects of the additives of yeast and Enterococcus faecium on the criteria of intestinal microflora, egg quality and performance in laying hens. Treatment groups employed were as... more
This study was conducted to determine the comparative effects of the additives of yeast and Enterococcus faecium on the criteria of intestinal microflora, egg quality and performance in laying hens. Treatment groups employed were as follows: Group 1Control (C, n=36): the criteria of intestinal microflora, egg quality and performance were compared, Group 2 (n=36): C + 1 g/kg Enterococcus faecium (EF) (Cylactin ME 10 1x10 cfu/g), and Group 3 (n=36): C + 1 g/kg yeast (Saccharomyces cerevisiae) (SC). The experiment was carried out on 108 Lohman Brown strains of hens, aged 45 weeks old, allocated into 3 groups of 12 replications, each containing 3 hens. Trial groups contained 36 hens each. The feed intake, egg production, egg weight and feed conversion ratio did not differ statistically between the groups (P>0.05). Similary, the egg quality criteria also did not differ statistically between the groups. The number of total bacteria increased in the Enteroccocus faecium group as compare...
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Summary: The aim of the present study was to determine the le vels of aflatoxin B 1 in young trout feed marketed in Erzurum province. For this, a total of 24 granule-2 and -3" size samples that were collected four times each in every... more
Summary: The aim of the present study was to determine the le vels of aflatoxin B 1 in young trout feed marketed in Erzurum province. For this, a total of 24 granule-2 and -3" size samples that were collected four times each in every other month on the 15 th of August, October and December were used. It was obs erved that there was no statistical difference betwee n the two sizes of feed samples based on their raw nutritive matter contents .The mean aflatoxin B 1 level was higher in August while it was lower in Octo ber and December (15.75, 8.92 and 7.20 ppb, respectivel y). It was also determined that the mean moisture ra tio was higher in August while it was lower in October and December (8.76, 7.9 1 and 7.82 %, respectively). In conclusion, the fin dings suggest that the aflatoxin content in young trout feed increased dep ending on their moisture ratios, but this increase remained lower than the normal (i.e. 20 ppb, as conventionally aceptable) levels.
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Contamination of animal feed with mycotoxins before, during and after harvest is a worldwide problem for animals, producers, and consumers. These toxins are produced by molds, which are inevitable in plants, especially in moist... more
Contamination of animal feed with mycotoxins before, during and after harvest is a worldwide problem for animals, producers, and consumers. These toxins are produced by molds, which are inevitable in plants, especially in moist environments. The most common mycotoxins are aflatoxin, ochratoxin, fumonisin, deoxynivalenol and zearalenone. Many methods are used to render mycotoxins harmless in animal feeds. The most preferred of these methods is the use of toxin binders in the feed. Toxin binders are non-nutritive adsorbents that bind to mycotoxins, preventing their absorption from the gastrointestinal tract and excreting them in faeces. Thereby minimizing their toxic effects on the animals. Among these adsorbents, the most preferred are aluminosilicates, followed by activated charcoal and synthetic polymers. Organic toxin binders such as bacteria, yeast, fungi, and enzymes can also be used for this purpose. In this review, the effects of toxin binders used in animal nutrition will be ...
Although many methods have been developed in order to reduce the negative effects in laying hens reared at high cage density, researches on effects of dietary supplementation of oregano (Oreganum syriacum L., OEO) essential oil as a feed... more
Although many methods have been developed in order to reduce the negative effects in laying hens reared at high cage density, researches on effects of dietary supplementation of oregano (Oreganum syriacum L., OEO) essential oil as a feed additive to the diets are extremely sparse. This study investigated the effects of OEO and caging density on performance parameters, egg quality criteria, some blood biochemical parameters, blood antioxidant capacity, and intestinal histopathology of laying hens. We used 276 white Lohmann laying hens aged 38–40 weeks in the experiment. The animals were divided to positive control (600 cm2 hen/cage, PC), negative control (360 cm2 hen/cage, NC), negative control+ 200 mg/kg OEO (NC+O2), negative control+ 400 mg/kg OEO (NC+O4), and negative control+ 600 mg/kg OEO (NC+O6). In this study, it was determined that egg weight and egg shell weight increased at higher caging density, but they did not change with dietary supplementation of OEO. In addition, the...
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The objective of the current study was to evaluate the effects of different levels (1.5, 3.0, 4.5 g/kg) of organic acid mixture (OAM) (60% formic acid, 20% propionic acid, and 20% soft acid) supplementation in the diets of laying hens on... more
The objective of the current study was to evaluate the effects of different levels (1.5, 3.0, 4.5 g/kg) of organic acid mixture (OAM) (60% formic acid, 20% propionic acid, and 20% soft acid) supplementation in the diets of laying hens on egg production, egg quality parameters, and intestinal histomorphology. Seventy-two Lohman strains of layers (26-week-old) were divided into four treatment groups. The hens were fed either a control diet or the control diet supplemented with 0, 1.5, 3 or 4.5 kg/t level of OAM from 26 to 38 weeks of age. The OAM supplementation did not affect feed consumption, egg production, egg weight, feed conversion ratio and body weight. Except for yolk index none of egg quality parameters and metabolic profile were affected by the dietary treatments. Inclusion of OAM into the basal diet increased villus height (quadraticaly), villus weight (quadraticaly), and tunica mucosal width (linearly) eexcept for crypt depth. Based on the results, dietary supplementation ...