484 research outputs found
The effect of Silymarin on Production Performance and Some Carcass Characteristics of Broilers Consuming Aflatoxins
هدفت الدراسة الحالية الى معرفة مدى تأثير مادة السليمارين وفائدتها على الاداء الانتاجي وبعض صفات الذبيحة لفروج اللحم المتناولة علائق حاوية على سموم الافلا والتي تعاكس تاثيرات السموم السلبية, اذ تم توزيع مئة واربع واربعون من ذكور أفراخ فروج اللحم نوع (روز 308) بعمر يوم واحد وبأوزان متقاربة(40+ 5 غم) الى اربع مجاميع متساوية العدد بواقع 36 طائر لكل مجموعة والتي بدورها قسمت الى ثلاثة مكررات بواقع 12 طائر لكل مكرر.تم توزيع المجاميع على الشكل التالي المجموعة الاولى : مجموعة السيطرة, المجموعة الثانية : العليقة القياسية مضافا لها سم الافلا بكمية 500 ميكروغرام / كغم علف, المجموعة الثالثة : العليقة القياسية مضافا لها سم الافلا بكمية 500 ميكروغرام / كغم علف بالاضافة الى 0.5 مللتر من مادة السليمارين لكل لتر ماء شرب, المجموعة الرابعة : لعليقة القياسية مضافا لها سم الافلا بكمية 500 ميكروغرام / كغم علف بالاضافة الى 1 مللتر من مادة السليمارين لكل لتر ماء شرب. استخدمت التربية الارضية على الفرشة العميقة, استمرت التجربة لمدة (35 يوم),
اثناء فترة التجربة, تم حساب الصفات الخاصة بالأداء الإنتاجي لمدة خمسة اسابيع وهي وزن الجسم وكمية العلف المستهلك ومعدل الزيادة الوزنية ومعامل التحويل الغذائي.اظهرت النتائج وجود تحسن حسابي ومعنوي لصالح المجموعة الرابعة مقارنة مع بقية المجاميع.
في اليوم الاخير من التجربة تم ذبح خمسة فراريج من كل مكرر وتم دراسة قياس صفات الذبيحة ونسب الاعضاء التالية وهي كل من البنكرياس والقانصة والكبد والطحال والقلب والمعدة ونسب قطعيات الذبيحة متمثلة بالفخذين والصدر والظهر والجناحين والرقبة ونسبة التصافي. أظهرت النتائج عدم وجود فروقات معنوية بين المجاميع الاربع في معظم صفات الذبيحة بالرغم من وجود بعض التحسن البسيط لبعض صفات الذبيحة.
يستنتج من هذه الدراسة ان اضافة مادة السليمارين الى ماء الشرب لمجاميع ذكور فروج اللحم المتناولة سم الافلا قد يحسن بعض من صفاتها الانتاجية. The current study aimed to know the extent of the effect of silymarin and its usefulness on the productive performance and some characteristics of the carcass of broilers which consuming diets containing aflatoxins which counteract the effects of negative toxins, which is One hundred and forty-four male broiler chicks, type (ROSS 308), one day old, of similar weights (40 + 5g), were distributed into four groups of equal number by 36 birds per group, which in turn was divided into three replicates by 12 birds for each duplicate. In the following figure, the first group (the control group), the second group (the standard diet plus aflatoxin in an amount of 500 micrograms/ kg of feed), the third group (the standard diet plus aflatoxin in an amount of 500 micrograms/ kg of feed in addition to 0.5 ml of silymarin per 1 liter of drinking water), the fourth group (the standard ration plus aflatoxin in an amount of 500 micrograms / kg of feed in addition to 1 milliliter of silymarin per 1 liter of drinking water). Ground culture was used on a deep litter, the experiment lasted for (35 days).
During the trial period, the characteristics of the production performance for a period of five weeks were calculated, which are body weight, amount of feed consumed, weight gain rate, and feed conversion ratio. The results showed a mathematical and significant improvement in favor of the fourth group compared to the rest of the groups.
On the last day of the experiment, five chicks were slaughtered from each replicate. The carcass characteristics were measured and the proportions of the following organs were studied: the pancreas, the gizzard, the liver, the spleen, the heart, and the stomach. The results showed that there were no significant differences between the four groups in most of the carcass characteristics, despite some slight improvement in some of the carcass characteristics.
It is concluded from this study that adding silymarin to drinking water for groups of male broilers consuming aflatoxin may improve some of their productive characteristics.
 
The Rostock Energetic Feed Evaluation on the Base of Net Energy
Feed evaluation was an emphasis of research from the foundation of the Oskar-Kellner-Institute of Animal Nutrition in 1953 at Rostock by Prof. Kurt Nehring. The aim of the research work was the elaboration of a feed evaluation system containing reference numbers of feed values and requirements of farm animals. The approach and the present system are outlined in this paper
Hardware-Modellierung und Algorithmus-Optimierung für die dreidimensionale Objekterfassung durch CMOS-Bildsensoren mit Kurzzeitintegration und Laserpulsbeleuchtung
This work analyses a solid state 3D-CMOS camera system for
direct time-of-flight image acquisition, which consists of a CMOS
imaging sensor, a laser diode module for active narrow infrared
laser pulse illumination and all optics for image forming.
The investigation is carried out using ideal and real signals. A deterministic model describes the main signal processing. For this
the laser pulse function and various integration window function
were sampled. The latter were recorded by using the impulse response of a narrow pulse of TFWHM = 63, 44ps. The visual integration windows give a good understanding of differences between
ideal and real output function of measurement systems.
The influence of noise sources like photon noise, thermal noise
and quantization noise was considered. Further investigations related to intensity and time delay of the received laser pulse show
how the output voltage noise of the pixel column circuit depends
on.
The postprocessing algorithm called MDSI was modelled by the
sampled laser pulse and integration windows. An extended version of the distance calculation includes an additional time-shift
between the laser pulse and the integration window during the
first main signal processing. This gives an larger measurement
domain. Measurements of the distance-proportional voltage quotient confirm the extended version, which was created in a computer simulation before
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Urban Challenges and Urban Design Approaches for Resource-Efficient and Climate-Sensitive Urban Design in the MENA Region
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Effects of endocannabinoids on feed intake, stress response and whole-body energy metabolism in dairy cows
Endocannabinoids, particularly anandamide (AEA) and 2-arachidonoylglycerol (2-AG), are instrumental in regulating energy homeostasis and stress response. However, little is known about the endocannabinoid system (ECS) in ruminants, although EC could improve dairy health and productivity, at least by increasing feed intake. In this study, we report if intraperitoneal (i.p.) AEA and 2-AG administration affects feed intake, whole-body macronutrient metabolism, isolation and restraint stress, and whether diet composition modulates circulating endocannabinoid concentrations in cows. Twenty Simmental cows in late lactation were fed a grass silage and a corn silage based diet. On each diet, cows received daily i.p. injections with either AEA (5 µg/kg; n = 7), 2-AG (2.5 µg/kg; n = 6) or saline (n = 7) for 8 days. Endocannabinoid administration for 5 days under free-ranging (non-stressed) conditions had no effect on feed intake or energy balance, but attenuated the stress-induced suppression of feed intake when housing changed to individual tie-stalls without social or tactile interaction. Endocannabinoids increased whole-body carbohydrate oxidation, reduced fat oxidation, and affected plasma non-esterified fatty acid concentrations and fatty acid contents of total lipids. There was no effect of endocannabinoids on plasma triglyceride concentrations or hepatic lipogenesis. Plasma AEA concentrations were not affected by diet, however, plasma 2-AG concentrations tended to be lower on the corn silage based diet. In conclusion, endocannabinoids attenuate stress-induced hypophagia, increase short-term feed intake and whole-body carbohydrate oxidation and decrease whole-body fat oxidation in cows.Landwirtschaftliche Rentenbank
http://dx.doi.org/10.13039/501100018686Deutsche Forschungsgemeinschaft
http://dx.doi.org/10.13039/501100001659Forschungsinstitut für Nutztierbiologie (FBN) (2113)Peer Reviewe
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