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Articles by A.E. Onyimonyi
Total Records ( 9 ) for A.E. Onyimonyi
  S.O.C. Ugwu and A.E. Onyimonyi
  The carcass, organ and organoleptic characteristics of spent layers fed Bambara nut sievates (BNS) were investigated. Ninety laying hens of the Brown Nera strain in their 9th week of lay were randomly assigned to five dietary treatment in which BNS were incorporated at levels of 0 (control), 5, 10, 15 and 20 percent. There were eighteen birds per treatment and each treatment was replicated thrice in a Completely Randomized Design. The feeding trial lasted for 45 weeks during which each bird received 120g of feed/day. Results showed that final body weight, dressing percentage and residual weight were significantly affected by treatments (P<0.05). There was an observed increase in these parameters up to the 10 percent levels after which the values declined. Birds on the 10 percent BNS diets were superior in these parameters. Gizzard and liver weights increased significantly (P<0.05) as levels of BNS increased. Organoleptic investigations revealed that colour, taste and texture of the breasts muscle were significantly (P<0.05) affected by treatments. Birds on the 10 percent BNS diet had significantly higher colour value whereas taste and texture significantly increased as level of BNS in the diets increased. In conclusion, the results of this study reveal that BNS can be incorporated at 10 percent level in diet of laying hens without compromising carcass characteristics at end of lay.
  S.O.C. Ugwu , A.E. Onyimonyi and C.I. Ozonoh
  Ninety six unsexed four weeks old Anak broilers were used to compare the performance of finishing broilers fed Palm kernel cake, Bambara offal and Rice husk as partial replacement for maize. The ninety-six broilers were divided into four groups and fed diets containing either 40 percent Maize (T1) as control or 20 percent Palm kernel cake (T2), 20 percent Bambara offal (T3) and 20 percent Rice husk (T4). Each group was replicated thrice with 8 birds per replicate in a Completely Randomized Design (CRD). Feed and water were provided ad libitum for the 28 days the trial lasted. Results showed that the effect of treatments on final body weight, body weight gain, feed intake, feed conversion ratio and feed cost/kg gain were significant (P < 0.05). Average daily gain of 0.075kg observed in birds on T2 was significantly different (P < 0.05) from values of 0.065Kg, 0.066kg and 0.067kg recorded for birds on the control, T3 and T4 diets respectively. Also, the same group (T2) had superior feed cost per kg gain of 118.60 which differed significantly (P < 0.05) from 135.59 and 154.40 observed for birds on the control and T4 diets respectively. Haematological investigation revealed that the same birds on T2 had significantly higher values (P < 0.05) of red blood cell, haemoglobin, packed cell volume and eosinophils. Results of this study showed that 20 percent PKC can effectively replace maize in diets of finishing broilers with better performance and economic returns.
  A.E. Onyimonyi and S.O.C. Ugwu
  An experiment was conducted to evaluate the performance of early growing broilers (2-6 weeks old) fed diets in which cassava peel/bovine blood mixed at varying ratios replaced 50 percent of the soyabean meal in the control Diet. One hundred and twenty broiler chicks were randomly allotted to six treatments replicated twice in a completely randomized design. Diet 1 served as the control, while Diets 2, 3, 4, 5 and 6 had cassava peel/bovine blood mixed in the ratios of 1:1; 1:2; 1:3; 2:1; and 3:1; respectively. The feeding trial lasted for 28 days. Results showed that the effect of treatments on Average Daily Feed Intake (ADFI) was significant (P<0.05). Birds on the test diets had significantly higher intake than the control group. Treatment effect on Average Final Body Wt (g), Average Daily Body Wt Gain (g) and Feed Conversion Ratio were not significant (P>0.05). Economic analysis showed that feed cost per bird was lower in the cassava/bovine blood based groups. Revenue from these groups were also higher than in the control. Benefit from birds on Diet 4 (1:3 ratio of cassava peel/bovine blood) was highest- 495.62 as against 385.23; 413.28; 459.95; 462.43 and 445.32 for birds on the control, Diets 1, 2, 3, 5 and 6 respectively. It was concluded that feeding early growing broilers cassava peel/bovine blood can effectively replace 50 percent of soyabean meal in the control without any adverse effect on the performance of the birds, while cassava peel/bovine blood at the 1: 3 rate gave the highest economic return.
  A.E. Onyimonyi and S.O.C. Ugwu
  A feeding trial was conducted to evaluate the performance of laying hens fed varying dietary levels of Toasted Bambara Offals (TBO). The TBO was included in the diet at five levels of 0, 5, 10, 15 and 20 percent. A total of ninety laying hens on their eight week of lay were used for the trial that lasted for 133 days. The ninety birds were randomly assigned to the five dietary levels (0, 5, 10, 15 and 20 percent) with 18 birds per levels. Each dietary level was further replicated four times in a completely randomized design. Results showed that egg weight (g), yolk weight (g) and albumen weight (g) were significantly (P<0.05) affected by treatments. Values of 61.38, 64.00, 64.67, 65.00 and 68.45 g was recorded as egg weights for birds on the 0, 5, 10, 15 and 20 percent diets respectively. Yolk weight was 16.53, 16.50, 16.43, 17.83 and 18.07 for 0, 5, 10, 15 and 20 percent diets respectively and albumen weight of 37.78, 39.51, 39.44, 39.82, 43.09 was also observed in that order. The cost of feed (N) significantly (P<0.05) decreased as level of TBO in the diets increased. Cost of feed consumed/bird (N) significantly decreased as level of TBO in the diets increased. Total eggs produced/bird followed the same trend. Profit recorded from sale of eggs was significantly (P<0.05) highest at the 10 percent level. A value of N 1139.81 was recorded for the 10 percent diet, as compared to N1120.13; N1126.96, N1089.75 and N1083.87 recorded for the control, 5, 15 and 20 percent diets respectively. The results of the present study showed that TBO can be fed at 10 percent to laying hens to replace substantial levels of the more costly maize and soyabean meal. This level of feeding will ensure optimum performance and economic benefit to the farmer.
  A.E. Onyimonyi , Adeyemi Olabode and G.C. Okeke
  The performance and economic indices of broilers fed varying dietary levels of sun dried Neem Leaf Meal (NLM) were investigated using ninety ‘Ross’ unsexed two weeks old broilers. The birds were randomly assigned to five treatment groups of eighteen birds each in which NLM was incorporated at 0, 0.5, 1.0, 1.5 and 2% for treatments 1, 2, 3, 4 and 5 respectively. Each treatment was further replicated twice with nine birds per replicate in a Completely Randomized Design. Results showed that treatment effect on Average Final Body Weight (AFBW), Average Daily Gain (ADG), Average Daily Feed Intake [ADFI] and Feed Conversion Ratio (FCR) were significant (P<0.05). Birds on the 0.5% NLM had significantly (P<0.05) superior AFBW, ADG and FCR. ADFI of birds on the 0.5% NLM was statistically the same with the control birds but differed from the rest treatments on NLM. Gross margin analysis reveals that a profit of N707.30 is made per bird on the 0.5% NLM as against N630.97, N620.73, N621.81 and N507.06 for birds on the control, 1.0, 1.5 and 2.0% NLM respectively. It is concluded that inclusion of 0.5% NLM in the diets of broilers will support optimum performance and economic benefit.
  S.O. Ugwu , A.E. Onyimonyi , Nicholas Ozor and M. Mkpado
  The study examined sound reasons, principles and techniques employed by subsistence farmers in the art of masterminding Nigerian native hens to incubate, hatch and brood guinea fowl chicks in Katsina State of Nigeria. Ninety subsistence poultry farmers were randomly selected without replacement from the three agricultural zones of the state. Sources of primary data were structured questionnaires, market survey and observations of field activities and interviews. Descriptive statistics, Kolmogorov-Smirnov (K-S) one sample statistics and gross margin analysis were employed in data analyses. Results showed that lack of technical know-how on incubator operations and the breeding of exotic birds, poor capital base and the broodiness of the Nigerian native hens, were the major reasons for farmers adoption of the indigenous technology. Further results showed that 33% and 39% of the farmers each can produce 3,250 and 2,200 guinea fowl eggs respectively per breeding season of about four months per annum. A gross margin of Niara 5875.00 per Nigerian native hen was obtained from the analysis. The paper concludes with emphasis on the need for mass adoption of the indigenous technology by other small-holder farmers in the country because it is economical. This can be achieved through vigorous awareness campaigns on the technology by development agencies that are interested in bettering the living standards of the rural populace
  A.E. Onyimonyi and Onu Ernest
  A feeding trial was conducted to evaluate the effect of dietary inclusion of Pawpaw Leaf Meal (PLM) on the performance of finishing broilers. Sixty 5 weeks old broilers were used for the study that lasted for 28 days. The sixty birds were assigned to four dietary treatments with fifteen birds per treatment in a Completely Randomized Design. Each treatment was replicated thrice. Four isonitrogenous and isocaloric broiler finisher diets containing 21% CP and 2800kcalME/kg were formulated. PLM was incorporated at levels of 0.5, 1.5 and 2.0% in treatments 2, 3 and 4 respectively. Treatment 1 had no PLM and was used as the control diet. Results should that the effect of treatments on final body weight, weight gain, daily weight gain, feed conversion ratio and feed cost/kg gain were significant (P<0.05). Birds on treatment 4 had a final body weight of 2972.5 g which differed significantly (P<0.05) from the 2612.5, 2785.0 and 2875.0 g observed for birds on T1, T2, and T3 respectively. The same birds on treatment 4 gained significantly (P< 0.05) more weight of 2044.0 g during the study period. A feed cost/kg gain of N138.42 was also recorded for the birds on T4 as against N167.28, N148.15 and N141.05 observed for birds on T1, T2 and T3 respectively. Percentage of edible cuts as represented by dressing percentage was also significantly (P<0.05) higher in the birds on T4. The meat of birds on T4 also had a significantly (P<0.05) general acceptability. It is concluded that a 2% inclusion of PLM in the diet of finishing broilers could improve performance, carcass and organoleptic indices.
  A.E. Onyimonyi , S.O.C. Ugwu and N.S. Machebe
  The performance of growing pigs fed on basis of percentage of their body weight was evaluated using twenty four growing pigs of Landrace x Large White crosses weighing averagely 35±0.5 kg at the start of the study. The pigs were assigned to four treatments and each treatment was replicated thrice with two pigs per replicate in a Completely Randomized Design. An 18% CP and 11.82 MJME/kg diet was formulated and fed at levels of 10, 8, 6 and 4% of body weights in treatments 1, 2, 3 and 4 respectively. The feeding trial lasted for 56 days. Results showed that treatment effect on the response parameters were significant (P<0.05). As percentage of body weight feeding reduced, final body weight of the pigs increased significantly (P<0.05). Pigs on treatments 2, 3 and 4 had a final body weight of 68.64, 67.62, 67.68 kg respectively which differed from the 60.03 kg observed for pigs on treatment 1. Pigs fed 4% of their body weight (Treatment 4) showed superiority in the response parameters. Pigs on Treatment 4 had a feed cost/kg gain value of 79.56 naira which differed significantly from 263.21 naira, 161.78 naira and 120.67 naira recorded for pigs on T1, T2 and T3 respectively. Linear body measurement of the pigs followed the same trend as observed in the other response parameters. Pigs on T4 recorded the highest significant (P<0.05) changes in chest girth, height at withers and body length. It is concluded that feeding growing pigs at level of 4% of their body weight leads to optimum performance and better economic returns.
  J.N. Asegbeloyin , A.E. Onyimonyi , O.T. Ujam , N.N. Ukwueze and P.O. Ukoha
  The Cd, As, Pb, Cr and Se contents of fillets of ten fish species and As, Cd and Pb contents of some parts of cow and goat meats were determined by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), after wet digestion of powdered samples with 1:1 HNO3,/H2O2. The ranges obtained for the metals analyzed in fish (mg/kg, dry weight) are as follows; As (0.02-4.58), Se (0.66-1.66), Pb (0.45-4.78), Cd (0.22-2.02) and Cr (0.18-1.96). While the ranges obtained for the metals analyzed in cow meat (mg/kg, dry weight) are as follows: As (0.82-2.09), Cd (0.28-1.50) and Pb (0.80-1.42) and the range of metals analyzed in goat meat are as follows: As (0.02-4.88), Cd (0.04-0.93) and Pb (0.02-1.36). Of all the samples analyzed, the goat intestine contained the highest amount of As (4.88±0.015). Mean Pb concentrations (mg/kg) in Hydrocynus forskahlii (3.51±0.06), Clarias anguillaris (3.43±0.021), Scomber japonicus (4.61±0.043) and Scomber scombrus (4.78±0.045) exceeded the recommended limits specified by most food regulatory bodies. It is concluded that fish samples in the study area have heavy metal accumulations a little above recommended safety standards.
 
 
 
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