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Effects of Lupinus Angustifolius (cv. Arabella and Kalya) on the Growth and Serum Profiles in Broilers

M Hassan
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

S Datta
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

S Rahman
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

O Islam
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

M Hossain
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

I Hossain
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

MH Rahman
Department of Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

This work examined the effects of incorporation of exogenous enzyme preparation on growth and performance traits in broilers fed diet containing 400 g/Kg of L. angustifolius (cv. Arabella) of Europe and L. angustifolius (cv. Kalya) obtained from Australia. A maize- soy (MS) based diet served as a control diet and acted as positive, while non-protein control diet acted as a negative control (NPC) and fed ad libitum for 18 days. Growth rate, apparent digestibility of N, fat and excretion of essential minerals were assessed. In comparison to broilers fed maize-soy (MS) diet, broilers fed the L. angustifolius of European origin (EL) diet, consumed less feed, had considerably lower body weight gain, as well as lower apparent digestibility. Addition of Rena phytase to the EL (ELPH) and L. angustifolius of Australian origin (ALPH) increased feed intake, however, the feed gain ratio was found to be decreased. . This study indicates that a diet containing high level of lupin meal is detrimental to feed intake broilers and thus affected their performance. However, when lupin meal diet was supplemented with Rena phytase, performance parameters were not different from those obtained from raw meal. The inclusion of lupin meal with or without exogenous enzyme had significant effect on the mineral content of the faeces and on mineral balance. The results suggest that lupin protrein is involved in the elevated loss of minerals associated with long-term effects of this seed as protein source in poultry. Compared to those of control, the N excretion was in the range of 14.9% (EL), 15.6% (ELPH) and 13.9% (ALPH). On the other hand, digestibility was found to be in the range of 78% (EL) and 73% (ELPH) than the corresponding control fed on (MS) diet. The fat excretion was found to be highest in (ALPH) fed diet 19.1% as compared to those of control. True fat digestibility was found to be at the lowest level n ALPH group. The present work has revealed a very remarkable property of L. angustifolius of Australian lupin, that has caused high level of fat excretion in the droppings of broilers fed this as compared to those of its European counterpart. It is highly likely that Australian lupin due to its gel forming character may have caused this kind of response in fecal lipid excretion.

Keywords: Broiler, Lupinus angustifolius, Performance

Location: Department of Agriculture, Perth, Western Australia.

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Broiler

Objectives:

To determine the effects of phytase fed on Lupinus angustifolius cv. Arabella and Kayla and to estimate total cholesterol, BUN and triglyceride levels in the serum after being fed on the diets based on sweet lupin.

Methodology:

Seeds and chemicals- Sweet lupin (Lupinus angustifolius) cv. arabella seeds were obtained as donation from Dr. Peter Roemer, SuedwestdeutscheSaatzucht GmbH & Co. Kg, ImRheinfeld 1-13, D-76437 Rastatt, Germany and Michael D. Unruh, President of Shasta Foods International, Inc. California, USA. Lupinus angustifolius cv. Kalya was obtained from Dr. Mark Withington of the Department of Agriculture, Perth, Western Australia. Maize starch and soybean meal, oil, vitamin and minerals were purchased from local sources. Rena phytase was obtained as gift from Renata Bangladesh. All other chemical used were of Analar grade. Diets- The feed was prepared by incorporating the ingredients. Raw lupin seeds were ground into a fine meal with a grinding machine and the diet was prepared according to Rahman, (2000). Experimental designs and feeding protocol Pre experimental period- Twenty day old Cobb 500 hundred broiler chicks were obtained from local hatchery through a local agent in Mymensingh and were housed on rice husk unit 14 day of age. They were fed commercial broiler starter diet ad libitum and reared on husk floor. Water was supplied ad libitum in plastic water trough. The body was monitored daily Bird husbandry and sample collection A total of 20 growing broilers, 4 birds in each group were weighed on day 15 (weighing 555.3±5.03g) and randomly allocated to cages. Two broiler bird were placed in each cage. There were a total of four experimental and two control (positive and negative non-protein control) diets. Diets were fed ad libitum from day 15 for a period of 18 days (conventional slaughter weight). Body weight, feed intake, feed refusal and fecal weights were recorded every day. Cumulative feed efficiency per bird was calculated as the ratio of weight gained to feed consumed. Dry matter of excreta was determined from the last 10 d of feeding trial by drying aliquots of every day’s droppings for 6 h at 105°C. The number of chicks with sticky droppings adhering to the cloacae was noted on the same days of excreta collection. Morality throughout the trial did not occur. Water was available ad libitum throughout the study, via plastic water trough. On the 19^th day of the experiment, birds were slaughtered and blood samples were collected and serum was prepared and kept at-20°C. Serum collection and biochemical parameters analysis- On the 19^th day of the experiment, birds were killed by severing the jugulars and blood samples were collected in tightly rubber stoppered glass test tubes and serum samples were collected. Serum samples were contrifuged at 3, 000 xg for 15 min in a bench top centrifuge. Clear serum samples were analyzed for cholesterol, triglycerides and blood urea nitrogen (BUN) using commercially available test kits.

Source of Information: Bang. J. Anim. Sci. 2017. 46 (4):266-272

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In conclusion, this study showed four completely new features of deleterious effects on Lupinus angustifolius: a) Depression of feed intake and growth rate in broilers fed lupin meal of Europe and/or Australian origin. b) Although there had an increase in feed intake due to incorporation of Renaphytase, however, the feed gain ratio was poor as compared to those of control. c) Despite having low phytate in the meal, mineral excretion in the droppings were very high. d) L. angustifolius of Australian origin excreted highly significant amount of both N and fat in the droppings. The scale of these changes could be directly correlated with the very high level of non-starch polysaccharides. Thus, only exogenous enzyme like addition of phytase alone in the lupin may not be appropriate to improve the broiler’s performance.

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