شماره ركورد :
971876
عنوان مقاله :
اثر استفاده از سطوح مختلف روغن هسته انار در جيره بر خصوصيات لاشه، تركيب شيميايي و ويژگي‌هاي گوشت بره‌هاي پرواري
عنوان به زبان ديگر :
The effects of addition of pomegranate seed oil in diet on carcass characteristics, meat chemical composition and quality of fattening lambs
پديد آورندگان :
كرمپور، عليرضا دانشگاه رازي - پرديس كشاورزي و منابع طبيعي - گروه علوم دامي , كفيل زاده، فرخ دانشگاه رازي - پرديس كشاورزي و منابع طبيعي - گروه علوم دامي , ناصري هرسيني، رضا دانشگاه رازي - پرديس كشاورزي و منابع طبيعي - گروه علوم دامي , ناصري، وريا دانشگاه رازي - پرديس كشاورزي و منابع طبيعي - گروه علوم دامي , پاينده، شهاب دانشگاه رازي - پرديس كشاورزي و منابع طبيعي - گروه علوم دامي
تعداد صفحه :
16
از صفحه :
131
تا صفحه :
146
كليدواژه :
نيروي برشي , رنگ گوشت , ويژگي‌هاي لاشه , بره پرواري , روغن هسته انار
چكيده فارسي :
زمينه مطالعاتي: روغن هسته انار غني از اسيدهاي چرب غير اشباع با چند پيوند دوگانه بوده و مي­ تواند بهبود تركيب اسيدهاي چرب در توليدات دامي را سبب شود. هدف: اين پژوهش به منظور بررسي اثر استفاده از روغن هسته انار در جيره بر ويژگي­هاي لاشه، تركيب شيميايي و ويژگي‌هاي كيفي گوشت بره‌هاي پرواري‌ انجام شد. روش كار: در اين پژوهش از بيست‌ و يك رأس بره‌ نر پرواري نژاد سنجابي سه تا چهار ماهه با ميانگين وزن اوليه 2/6±27/5كيلوگرم در قالب طرح كاملاً تصادفي مشتمل بر سه تيمار و هفت تكرار استفاده شد. تيمارهاي آزمايشي شامل جيره فاقد روغن هسته انار (شاهد) و جيره‌هاي حاوي 0/2 و 0/4 درصد روغن هسته انار بودند. به منظور بررسي خصوصيات لاشه و ويژگي‌هاي گوشت، در پايان دوره آزمايش از هر گروه چهار رأس دام كشتار شد. نتايج: تغذيه بره/­ها با جيره حاوي 0/2 درصد روغن هسته انار افزايش معني­دار وزن دستگاه گوارش را به دنبال داشت (05/0>P). تفاوت معني‌داري در وزن قطعات لاشه در بين تيمارها مشاهده نشد. وزن كبد در بره‌هاي تغذيه‌شده با جيره حاوي 4 درصد روغن هسته انار به‌طور معني‌داري افزايش يافت (0/05>P). درصد چربي عضله راسته در بره‌هاي تغذيه شده با جيره حاوي 4 درصد روغن هسته انار تمايل به افزايش داشت (0/05=P)؛ اما ساير تركيبات شيميايي عضلات ران و راسته تحت تأثير خوراندن سطوح مختلف روغن هسته انار قرار نگرفت. شاخص رنگ قرمز (a*) در عضله ران و شفافيت رنگ گوشت (L*) در عضله راسته بره‌هاي تغذيه‌شده با جيره حاوي 4 درصد روغن هسته انار به‌طور معني­داري افزايش يافت (0/05>P). درصد افت وزني ناشي از پخت و نيروي برشي جهت تعيين تردي گوشت تحت تأثير استفاده از روغن هسته انار در جيره قرار نگرفت. نتيجه­/گيري نهايي: استفاده از روغن هسته انار تا سطح 4 درصد در جيره هيچ‌گونه تأثيري بر ويژگي­هاي لاشه و تركيب شيميايي عضلات ران و راسته نداشت؛ اگر‌چه سبب بهبود فراسنجه­ هاي رنگ گوشت شد.
چكيده لاتين :
تحليل برخي اقدامات زنبورداران و تاثير آن بر عملكرد زنبورستانهاي منطقه اشنويه 1 59 Analysis of some beekeepers activities and their effect on apiary perfo rmance in O shnavieh region E Hajalian 1 , A Shams 2* and R Masoumi 3 Received: September 1, 2016 Accepted: January 26, 2017 1 MSc in Agricultural Extension and Education, University of Zanjan , Zanjan, Iran 2 Associate Professor, Department of Agricultural Ex tension, Communication & Rural Development, Faculty of Agriculture, University of Zanjan, Zanjan, Iran 3 Assistant Professor, Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran * Corresponding Author: Email: shams@znu.ac .ir Introduction : Beekeeping as an economic activity, while preventing the degradation of pastures and forests in developing countries, has many opportunities for improving the livelihoods of small farmers by engaging them in this work (Masuku 2013 ; Ja'af ar - Furo 2014). Despite the expected important role of beekeeping in improving the livelihoods of farmers, jobs related to bees generally, have a low income (Mirmohammad Sadeghi et al. 2007). Several factors such as climate, vegetation (Golchin and Jalali 2 013; Karimi et al. 2009 ) and human factors (management and knowledge) affect the performance of beekeepers. If production in the agricultural and livestock sectors is due to three major sources of land, labor and capital, without the factor of management i t is incidental to produce . The returns of both physical and economic factors generally depend on the manager's skill in the combination of resources in an appropriate and efficient manner ( Nuthall 2006; Daneshvar K h aki 2010 ). It should be emphasized that although the beekeeper has no control over environmental and climatic factors, an empowered beekeeper can make the most use of climate and environmental conditions by making appropriate decisions. Therefore, there is a need for planning to improve the perf ormance and productivity of this activity, and this involves understanding the production status of beekeepers and their actions. According to the Agricultural Jihad Organization of the West Azerbaijan province in 2013, average honey production per colony (yield), was 19.3 kg in the province, while average production was reported in Osnavieh region equals 6.6 kg. Distribution of yield among beekeepers in the region was also significant. The range of yield varies from 3 kilograms to 40 kilograms per hive uni t (Abdi, personal communications 2014). Therefore, the main issue of the present research was why, despite the almost similar conditions in the region, there is a meaningful difference between beekeepers? Therefore, the present study assumes that some of t hese differences are attributable to beekeeper ' s breeding practices. In this regard, different activities of beekeepers, as a result of their knowledge and management skills, effect on the performance of their apiary. The aim of this study was to investiga te the effect of different activities of beekeepers on apiary yield. Material and m ethods : This research work was conducted in Oshnavieh region in the district of West Azerbaijan province, Iran. The target groups were the beekeepers which their numbers are estimated to be 218 household s. Cochrane’s sampling formula was adopted to get the appropriate sample size for this research, which involved 115 of beekeepers. Samples selected through randomized sampling method. Information related to hony bee production system was recorded by interviewing the farmers in their farm unit, using a structured questionnaire (research tool). The questionnaire included several sections. The dependent variable was the performance of the apiary in 2015 and in this research, income per hive was used to measure the yield. The data obtained were managed, collected and analyzed using Excel and SPSS 20 . The descriptive analysis was used to describe the sampled population in the study. The correlation test was used to describe the relatio nship between variables and multiple linear regressions was used to explore the effective variables on the yield of beekeepers. Results and d iscussion : the results showed that all beekeepers were male and most of them (95.7%) were married. The average age of beekeepers was 40 years; most of them (40%) were in the age group of 29 to 41 years old. Most respondents (83.5%) live in the village and among respondents, 105 were heads of household. 99 beekeepers were trained in beekeeping. Based on the results of t his research, beekeeping was the main occupation of 74.8% of the respondents and the remaining 25.2% were occupied by beekeeping as the second occupation. The average number of hives in the apiary was 218 hive, and 70% of beekeepers had less than 250 hives . Average sugar consumption per hive was 17.35 kg. More than 92% of beekeepers migrate their honey colonies , with a mean distance of 357 km. The results showed that almost all beekeepers use beekeeping clothing (hats, gloves, clothing, etc) and bee brush, but in contrast, a small number of beekeepers use artificial insemination and bee venom collector. Results showed that beekeepers had 40 different activities related to the production system. Average income per hive was about 1950000 rails. Correlation ana lysis revealed that education and actions of beekeepers e.g. Considering standard space of hive placement, migration (movement), considering health issues, removing sick hives from the field had positive significant correlation with farm yield (P<0.05) , bu t there were negative significant correlation between farm yield with variables e.g. Age, years of experience and queen replacement frequency (P<0.05) . Regression analysis revealed that explained 40 percent of farm yield. Conclusion : The result of regress ion analysis showed that two variables including the amount of sugar feeding and second migration distance is determining 39.8% of the farm yield variance .
سال انتشار :
1396
عنوان نشريه :
پژوهشهاي علوم دامي
فايل PDF :
3682828
عنوان نشريه :
پژوهشهاي علوم دامي
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