Haematological Traits and Serum Chemistry of Broiler Chicken Fed Bread Waste Based Diets

Animashahun Razaq Adekunle^1*, Omoikhoje Stanley Omoh²

*Corresponding author:[email protected]

ARTICLE CITATION: Adekunle AR Omoh OS (2014). Haematological traits and serum chemistry of broiler chicken fed bread waste based diets. J. Anim. Health Prod. 2 (4): 51 – 54.
Received: 2014–07–18, Revised: 2014–08–24, Accepted: 2014–08–26
The electronic version of this article is the complete one and can be found online at ( http://dx.doi.org/10.14737/journal.jahp/2014/2.4.51.54 ) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

ABSTRACT

This study was carried out to determine the effects of partial replacement of maize with 50% bread waste meal (BWM) on the haematological traits and serum biochemical indices of broiler chickens. One hundred and twenty days old Anak 2000 broiler chicks were used in an eight week feeding trial; thirty (30) chicks were selected per treatment group and each group was allocated to four treatment diets (1, 2, 3 and 4) with three replicates per treatment in a Completely Randomized Design (CRD). Diet 1, the control diet contain maize and soya bean meal (SBM) as basal diet; while 50% of maize in diet 1 was replaced with BWM in diets 2, 3 and 4 using SBM, groundnut cake meal (GNC), and 50% SBM + 50% GNC respectively as a protein source. The results showed that the haematological traits were significantly (P<0.05) influenced by the test diets, though the values obtained are within the normal range for broiler chickens. Packed cell volume (PCV) ranged from 39.60% in Diet 1 to 35.10% in Diet 4; White blood cells (WBC) from 271.10 to 251.10 (x 103/ µl), red blood cells (RBC) from 31.60 to 26.30 (x106/ µl), haemoglobin (Hb) from 13.17 to11.30 (g/dl), mean corpuscular volume (MCV) from 125.50 to 129.60 (fl) mean corpuscular haemoglobin (MCH) from 41.70 to 43.40 (þg) and MCHC from 33.60 to 32.80 (g/dl). The results of the serum biological indices showed that total protein and its fractions, and serum glucose were significantly (P<0.05) affected by the test, however these values are within the normal range for broiler chickens. From the above, therefore, it can be concluded that BWM at 50% inclusion can be included in the diets of broiler chickens as replacement for maize without any adverse effect on the blood profile of broiler chicken.

INTRODUCTION

The potential of poultry industry in alleviating the challenges of low availability of animal protein for human consumption in developing countries is being hampered by high cost of production (Damisa, 2008). The use of agro–industrial by–products have been one of the panaceas for high feed cost in developing countries. However, several authors have looked in the direction of different agro industrial by–products such as pineapple waste, Bambara groundnut, poultry waste, chicken offal, rice bran, castor oil bean, kolanut husk, rumen content, sunflower seed cake, shrimp waste meal, etc. in order to solve this problem (Adeniji CA 2005, Ani and Okorie 2005, Babatunde, et al., 2001, Dairo et al., 2005, Hamzat and Babatunde 2001). Bread waste, a by–product of bakery industry is cheap and abundantly available in Nigeria; it is rich in energy, low in fibre but high in vitamins (Abdulatif et al., 2004, and Dabron et al., 1999). It is a possible agro–industrial by–product that can be incorporated into broiler chickens feed as energy source in order to decrease the cost of production. In a study, Omole et al., (2011) assessed the performance and cost benefits of replacing maize fraction of the diet of growing snails (Archachatina marginata) with bread waste and concluded that bread waste meal (BWM) can replace 100% maize fraction of snail diets without any deleterious effect in the performance of the snails. Likewise, Fakunmoju (2014), observed better performance in catfish when their meal was supplemented with BWM.

Haematological observations provide valuable information about health of human and animals. According to Afolabi et al., (2010), changes in haematological parameters are often used to determine health status of the body and to know the degree of environmental, nutritional and/or pathological stresses. The factors that affect the blood like drugs, pathogenic organism or nutrition will certainly affect the entire body adversely or moderately in terms of health, growth, maintenance and reproduction (Oke et al., 2007). A readily available and fast means of assessing clinical and nutritional health status of animals on feeding trials may be the use of blood analysis, because ingestion of dietary components has measurable effects on blood composition (Maxwell et al., 1990). Adamu et al., 2006 observed that nutrition had significant effect on haematological values like PCV, Hb and RBC. Togun et al., (2007) reported that when the haematological values fall within the normal range reported for the animal, it is an indication that diets not have any adverse effect on haematological parameters during the experimental period but when the values fall below the normal range, it is an indication of anaemia. WBC roughly represents the immune status of the animals; when WBC (leucocytes) falls within the normal range, it indicated that feeding patterns do not affect the immune system; most immunological abnormalities observed in malnutrition are usually reversed with adequate adjustment to the quality of the feed (Ameen et al., 2007). According to Adekoya et al., (2008), increase in neutrophils: lymphocyte ratio is a good indicator of stress which could be of nutritional origin. Serum parameters are important in the proper maintenance of the osmotic pressure between the circulating pH and the fluid in the tissue spaces so that exchange of materials between the blood and the cells could be facilitated. Moreover, these parameters contribute to the viscosity and maintenance of normal blood pressure and pH (Ladokun et al., 2008).

Therefore, this study was undertaken to assess the effect of substituting maize with 50% BWM on the haematological and biochemical indices of broiler chickens.

MATERIALS AND METHODS

Feed and Experimental Design
The experiment was carried out in the Poultry Unit of Teaching and Research Farms, Ambrose Alli University (AAU) Ekpoma, Edo state of Nigeria. BWM was collected from Irebhor Bakery, Ekpoma, sundried for two weeks, grind and sieved. Other ingredients for feed formulation were obtained from Ekpoma town. Thirty chicks per group were assigned to four treatment diets (1, 2, 3 and 4) in a completely randomized design (CRD). Each treatment group has further divided into three replicates (ten chicks/replicate) and assigned to separate cages. All the chicks were fed the control diet for one week of acclimatization period, subsequently, the chicks were allowed free access to the experimental diets and clean water throughout the duration of the feeding trial ad libitum. Four broiler starter and finisher diets (1, 2, 3 and 4) were formulated; Diet 1, the control diet contains maize and soya bean meal (SBM) as basal diet; while 50% of maize in diet 1 was replaced with BWM in diets 2, 3 and 4 using SBM, groundnut cake meal (GNC), and 50% SBM + 50% GNC respectively as a protein source (Table 2). All diets were isonitrogenous and isocaloric.

Sample Collection and Preparation
Three birds were randomly selected from each replicate on weight equalization basis and blood samples were collected from each of them through a wing vein. Two sets of blood samples were collected from each bird, one set into a labeled EDTA specimen bottle for hematological indices determination, while the second set were collected in specimen bottles without anti–coagulant (EDTA) for serum indices determination.

Determination of Haematological Indices
Packed cell volume (PCV), red blood cell (RBC), and white blood cell (WBC) were quantitatively determined using improved Neubar’s haemacytometer after dilution, while haemoglobin level was analyzed using cyanomethaemoglobin method as described by Dacie and Lewis (1991). The standard ratios of the mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC) were calculated according to the procedure of Jain (1986).

Determination of Biochemical Indices
Blood samples collected without anticoagulant were used to determine the biochemical components. Serum glucose and urea were estimated by the methods described by WHO (1980) while total cholesterol was determined by the colorimetric enzyme method as outlined by Bush (1975). Similarly, serum total protein, albumin and globulin concentrations were determined by Biuret reactions (Bush, 1975).

Statistical Analysis
Data generated were subjected to a one way analysis of variance (ANOVA) and means were compared for significant differences using the Duncan’s Multiple range test as outlined by Steel and Torrie (1990) using the SAS (1999) package.

RESULTS AND DISCUSSION

The effect of dietary treatment on haematological indices of broiler chickens is shown in Table 3. The results showed that the packed cell volume (PCV), white blood cells (WBC),red blood cells (RBC), haemoglobin (Hb),and mean corpuscular volume (MCV) were significantly affected (P<0.05) by the diets. Birds fed diet 1(the control) has the highest PCV with an average value of 39.60%, while diet 4 (50% BWM and 50%SBM +50% GNC) has the least value of 35.10%; the same pattern was observed for WBC, RBC, Hb, and MCV. The values obtained for mean corpuscular haemoglobin concentration (MCHC) 33.10, 33.60, 33.33 and 32.80 g/deal in birds reared on diets 1,2, 3 and 4 respectively, were not significantly (P<0.05) different. All the haematological values obtained in this study were within the normal range (Maxwell et al., 1990; CCAC, 1993; Nse Abasi et al., 2014). These observations could be correlated with those reported by Wikivet (2013) who observed the following as the normal haematological values for bird: 35.9–41.0% (PCV), 11.60–13.68G/dl (Hb), 4.21–4.84x 106/ml (RBC), 4.07–4.32X103/ml (WBC), 81.60–89.10Fl (MCV), 27.20–28.90Pg (MCH), and 32.41–33.37% (MCHC). The similar values obtained in this study are an indication of the quality of the test diets as haematological parameters are a reflection of the animal responsiveness to both external and internal factors which include feed and feeding.

Table 4 represents the serum biochemical indices of the broiler chickens fed the experimental diets. The serum biochemistry is routinely used for detection of organ diseases in domestic mammals (Malik et al., 2013). It has been reported that serum biochemical constituents positively correlate with the quality of the diet (Adeyemi et al., 2000). It is accepted that serum protein profile and the absolute values of individual fractions are an excellent basis for a tentative diagnosis (Kaneko, 1997). Total serum proteins, albumin and globulin of broiler chickens fed 50% BWM were significantly influenced by the dietary treatments; the highest serum protein of 5.50% was recorded in birds on diet 1 (control) while the lowest of 4.60% was observed in diet 3 (50% BWM and groundnut cake meal basal meal). Globulin fraction followed the same pattern as the total protein values; however, despite the slight significant influence in these values, they are within the normal physiological values for chickens (Suchint, et al., 2004). This implies that the BWM–based diets possessed identical dietary qualities with the control diet.

It was observed that the result obtained for broilers on diets 2 and 4 were comparable (P< 0.05) similar and better than those on diet 3, this may be due to differences in the crude protein of soya bean meal (46.22% crude protein) and groundnut cake meal (42.10% crude protein) in their respective diets (Ghadge et al., 2009)

The values obtained for creatinine, urea, and cholesterol for all the dietary treatment groups are comparable to those reported for broilers fed diet 1 (0% bread waste meal). Non-significant differences (P<0.05) in the mean value of creatinine imply that BWM has a similar effect on the kidney of the birds across the dietary treatments; also creatinine value being an indicator of muscle mass catabolism (Ladokun et al., 2008). This result showed the normal physiological process in the broiler chickens fed the test diets and it confirmed the nutritional adequacy of the experimental diets (Maikano, 2014) as significant values out of the normal range indicate poor utilization of dietary protein (Hoffenberg, et al., 1996). The serum glucose was significantly (P< 0.05) influenced by the incorporation of the test diets; the values ranged from 328.30mg/dl in control diet to 202mg/dl in diet 4. Birds have a much higher normal glucose value than mammals. Diabetes mellitus could result from elevated blood glucose (>1000mg/dl), and very low values are often due to bacterial contamination or sample stored too long before analyzed (Gunarson, 2006). In this study, the cholesterol values are similar in all the treatment groups. Gunarson (2006) reported that by measuring cholesterol of feed, the fat metabolism can be assessed. Obesity could result from eating too much seed with excess fat. Elevated cholesterol levels are associated with hypothyroidism, hepatic lipidosis, high fat diets and starvation. The lower and non–significant cholesterol levels observed in this study are an indicator of health benefit of incorporating BWM in broiler chicken diets.

CONCLUSION

The results as shown above indicate that the bread waste meal can serve as an alternative energy source in broiler feed, without any adverse effects on the haematological and biochemical indices of the broilers.

CONFLICT OF INTEREST

There is no conflict of interest.

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