Plantain Ash Enhances Dietary Mineral Elements Absorption in Pullets

محورهای موضوعی : Camel

آی.سی. اوکلی ¹ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
سی.ام. نوگو ² (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
آی.اف. اُتوک ³ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
آ.آ. اُمد ⁴ (Department of Animal Science, Kogi State University, Ayangba, Kogi State, Nigeria)
آی.پی. اوگبوو ⁵ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
اِن.اُ. آلادی ⁶ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
وی.ام.اُ. اُکرُ ⁷ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
ام.ان. اُپارا ⁸ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
سی. اِزما ⁹ (Department of Animal Health and Production, University of Nigeria, Nsukka, Nigeria)
ام.سی. یوچگبو ¹⁰ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
بی.یو. اِکنیم ¹¹ (Department of Animal Science and Fisheries, Imo State University Owerri, Imo State, Nigeria)
جی.آ. آنیانو ¹² (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
ان.جی. اُکیودو ¹³ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
آ.بی.آی. یوددیبی ¹⁴ (Department of Animal Science and Technology, Federal University of Technology, PMB 1526 Owerri, Imo State, Nigeria)
اف.ان. مادوبویک ¹⁵ (Department of Animal Science and Fisheries, Imo State University Owerri, Imo State, Nigeria)

تاریخ دریافت : 1392/02/22 تاریخ پذیرش : 1392/04/10 تاریخ انتشار : 1393/03/11

کلید واژه: Heavy metals, faeces, mineral absorption, plantain ash, pullets,

چکیده مقاله :

Generally, only a fraction of the mineral ingested by an animal is effectively absorbed, while most are bound to other components such as fibre and then excreted. In this study, faecal mineral composition differentials were used as indicators of mineral uptake by pullets supplemented varying levels of plantain ash in their daily rations for nine weeks. Plantain stalk and root base samples were collected, sun dried and ashed to produce plantain stalk ash (PSA) and root base ash (PRA), respectively. Ninety six (96) day old Isa Brown pullets were reared to 15 weeks of age and thereafter divided into 2 major groups of 48 birds each. Each group was divided into 4 subgroups of 12 birds each and each subgroup divided into three replicates giving four birds per replicate in a completely randomized design. The PSA and PRA were fed to the pullets as mineral supplements to commercial grower from the 15th to 18th week (4 wk) and layer mashes from the 19th to 24th week (6 wk) at the rate 0, 1, 2 and 3 g per kg body weight so that one group received PSA and the other PRA. In each case, the zero supplementation served as control. At the 9th week of feeding, faecal samples were collected from the groups, dried in the sun and analyzed for their mineral compositions by atomic absorption spectrophotometry. Among the macro minerals, both PSA and PRA supplementation resulted in reductions in the faecal concentrations of K and Mg, with increasing supplementation level, resulting in further reduction of faecal content of these minerals. Mg showed highly significant (P<0.05, P<0.01) regression effects for PSA and PRA, respectively. Reductions in faecal Ni and Fe concentrations were high (47.62 and 79.19%) across 1 g/kg body weight (BW) PSA and PRA supplementations, while it was 83.33% for Mn at the same 1 g/kg BW PRA supplementation. Ni (PSA) and Cr (PSA and PRA) values were significant (P<0.10) for regression effects, implying that the faecal values of these minerals could be predicted from any given quantity of plantain ash using the regression equations. PRA supplementations resulted in increasing faecal content of the two heavy metals, that is, lead and cadmium, indicating selective poor intestinal absorption of these. Plantain ash could serve as potential sources of absorbable mineral supplements and also could improve mineral uptake from commercial diets offered to pullets.

چکیده انگلیسی:

به طور کلی، تنها بخشی از مواد معدنی مصرف شده توسط حیوان به طور مؤثر جذب می‌شوند. این درحالی است که بسیاری از این مواد به سایر بخش‌ها (مانند فیبر) متصل هستند و دفع می‌شوند. در این مطالعه، تفاوت ترکیب مواد معدنی در مدفوع به عنوان شاخصی از جذب مواد معدنی توسط پولت‌هایی که سطوح مختلف خاکستر موز پلانتاین در جیره غذایی روزانه خود را برای 9 هفته دریافت کردند، مورد استفاده قرار گرفت. نمونه‌های ساقه و ریشه موز پلانتاین جمع‌آوری و در آفتاب خشک و به خاکستر تبدیل شد تا خاکستر ساقه موز پلانتاین (PSA) و خاکستر پایه ریشه (PRA) ایجاد شود. 96 پولت ایزا قهوه‌ای یک روزه تا سن 15 هفتگی پرورش یافته و پس از آن به 2 گروه اصلی متشکل از 48 پرنده تقسیم شدند. هر گروه به 4 زیرگروه با 12 پرنده و هر زیرگروه به چهار پرنده در سه تکرار در قالب طرح کاملاً تصادفی تقسیم شدند. پولت ها با PSA و PRA به عنوان مکمل مواد معدنی برای دوره رشد از 15 تا هفته 18 (4 هفته) و جیره‌ی مرغ‌ها از 19 تا 24 هفته (6 هفته) به مقدار 0، 1، 2 و 3 گرم به ازای هر کیلوگرم وزن بدن تغذیه شدند به طوری که یک گروه PSA و دیگری PRA دریافت کردند. در هر مورد، سطح صفر به عنوان شاهد در نظر گرفته شد. در هفته 9 تغذیه، نمونه مدفوع از دو گروه جمع‌آوری و در آفتاب خشک شد و مواد معدنی آن‌ها به روش جذب اتمی اندازه‌گیری شد. در میان مواد معدنی پرنیاز، هر دو PSA و PRA سبب کاهش مقادیر پتاسیم و منیزیوم در مدفوع شدند. افزایش سطح مکمل منجر به کاهش بیشتر محتوای مدفوع از این مواد معدنی شد. منیزیم اثرات رگرسیونی بسیار معنی‌داری (05/0P<، 01/0P<) برای PSA و PRA نشان داد. زمانی که مکمل‌هایPSA  و PRA نسبت به وزن بدن (BW)، 1 گرم / کیلوگرم بود، کاهش غلظت نیکل و آهن در مدفوع بالا بود (62/47 و 19/79 درصد)، در حالی‌که درصد منگنز در همان 1 گرم مکمل PRA به ازای هر کیلوگرم BW 33/83 بود. مقادیر نیکل (PSA) و کروم (PSA و PRA) برای اثرات رگرسیونی معنی‌دار (01/0P<) بودند. این نشان می‌دهد مقدار مدفوعی این مواد معدنی می‌تواند از هر مقدار داده شده خاکستر موز پلانتاین را با استفاده از معادلات رگرسیون پیش‌بینی کرد. افزودن PRA به جیره سبب افزایش مقدار مدفوعی دو فلز سنگین سرب و کادمیوم شده است، که نشان دهنده جذب روده‌ای ضعیف آن‌ها است. خاکستر موز پلانتاین می‌تواند به عنوان منبع بالقوه قابل جذب مکمل مواد معدنی باشد که می‌تواند جذب مواد معدنی از جیره‌های تجاری پولت‌ها را بهبود دهد.

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