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Articles by I.A. Adeyinka
Total Records ( 13 ) for I.A. Adeyinka
  I.A. Adeyinka , O.O. Oni , B.I. Nwagu and F.D. Adeyinka
  The chicks used in this experiment were obtained from a population of naked neck broiler chickens that has been kept in NAPRI since 1998. Six Hundred chicks were obtained from four hatches, one week apart. At hatch, pedigreed chicks were wing-banded and housed on deep litter in an open house. Body weights were measured biweekly up to 8 weeks of age. Other measurements taken include Neck length, Back length, keel length and breast angle. The general least square means were 37.22 ± 0.32, 210.46 ± 1.97, 744.33 ± 4.31, 1351.3 ± 7.91 and 2428.1 ± 14.61g for wt at day old (WT0D), weight at 2 weeks (WT14D), weight at 4 weeks (WT28D), weight at 6 weeks (WT42D) and weight at 8 weeks (WT56D), respectively. While measurements taken included Neck length, Back length, keel length and breast which were 7.31 ± 0.06, 15.99 ± 0.05, 5.63 ± 0.04, 10.44 ± 0.04cm respectively. The heritability estimates ranged from low value of 3.013 ± 0.08 for keel length to 0.315 ± 0.22 for WT0D. There were negative genetic correlations between WT0D and other traits. This study showed that additive heritabilities are low for linear body measurement and moderate for body weight for naked neck chickens during rearing.
  I.A. Adeyinka , O.O. Oni , B.I. Nwagu and F.D. Adeyinka
  The data used to calculate the variance components of various production traits was obtained from records of about 4000 hens daughters of about 180 cocks mated to about 1,500 dams and collected over 5 year period. Two strains of Rhode Island Chickens were involved in this study. Within the red strain population sire`s contribution to total variation in age at first egg did not exceed 8.6% across the year and 6.9% in the white strain. Except for body weight at 40 weeks of the red strain where the contribution of the sire exceed 14%, the contribution of the sire to the total variation for all the economic traits considered in this study were generally low for both strain of the layer type chickens under consideration. Generally dam component of variance were higher most of the time and in many traits within the red strain population.
  O.O. Oni , B.Y. Abubakar , N.I. Dim , O.E. Asiribo and I.A. Adeyinka
  The monthly egg production data of Rhode Island Red (strain A) and White (strain B) chickens were used to estimate the genetic and phenotypic relationships between egg production traits and curve parameters obtained from fitting the McNally model to 52-wk laying records. A total of 356 and 292 records for strains A and B, respectively, were included in a variance component analysis of a two factor nested classification - dams within sire. The estimates of heritabilities and correlations for production traits were moderate to high, while the values obtained for the curve parameters varied from low to moderate. The estimates of correlations of part-productions with 52-week total were comparatively higher than the values obtained for curve parameters with 52-week total. The low estimates of heritability obtained for curve parameters indicated that it would be better to select on functions of the parameters (such as total production or part-year production), which had higher estimates, rather than individual curve parameters. The high genetic correlation between part-year production and total annual production suggests that selection for the latter based on the former would not diminish genetic progress. The decreased generation interval that would result from selection on part record will probably more than offset the loss in efficiency if records are taken for about half of the full laying year.
  B.I. Nwagu , S.A.S. Olorunju , O.O. Oni , L.O. Eduvie , I.A. Adeyinka , A.A. Sekoni and F.O. Abeke
  Data from 4336 pullets progeny of 144 sires and 779 dams for strain A and 4843 pullets, progeny of 158 sires and 1108 dams for strain B belonging to 5 generations under selection for part-period egg production to 280 days of age were used for this study. The number of pullets housed at about 18weeks per population ranged from 326 and 1000 per generation for each of the population. The effective number of parents in each generation averaged 174 and 187 for male and female populations, respectively. The traits measured were egg number to 280 days (EGG280 D), age at sexual maturity (ASM), egg weight average (EWTAV) and body weight at 40 weeks of age (BWT40). The co-efficient of inbreeding per generation due to finite population size was 0.005 for both the male and the female lines respectively. For the control population the values obtained were 0.008 vs 0.007 for both the male and female lines respectively. The average performance of the birds over the study period for the male and female lines respectively ranged from 38.38 vs 50.94 and 37.03 vs 51.25 for EGG280 D, 194 vs 212 and 197 vs 214 for ASM, 48.29 vs 55.93 and 48.29 vs 55.11 for EWTAV, 1600 vs 1754 and 1440 vs 1908 for BWT40.The effective number of parent in each generation averaging about 175 probably caused an average inbreeding of about 0.5% per generation. Although the level of inbreeding in this population is not critical there is evidence of an increasing trend, which could lead to homozygosity in the flock. There is need to widen the genetic base to prevent selection depression too early in the flock.
  B.I. Nwagu , S.A.S. Olorunju , O.O. Oni , L.O. Eduvie , I.A. Adeyinka , A.A. Sekoni and F.O. Abeke
  Records obtained from 4336 pullets progeny for strain A and 4843 pullets, progeny for strain B under selection for part-period egg production to 280 days of age were used for this study. The response variables measured were Age at sexual maturity (ASM), Egg number to 280 days (EGG280 D), Egg weight average (EWTAV) and Body weight at 40 weeks of age (BWT40). The genotypic response was only 0.42 eggs per generation in the male line. The female line population showed a much higher positive response to selection, the phenotypic value being 1.67 eggs per generation while the genotypic response was 3.1 eggs per generation. The genetic correlation estimates between the different economic traits ranged from -0.70± 0.38 to 0.82 ± 0.42 vs -0.71 ± 0.47 to 0.76 ± 0.29 for the male and female lines respectively. The correlation between egg number and egg weight was small non significant. ASM was highly and negatively correlated with egg production to 280 days in both lines being higher than- 0.60 in most cases. The genetic correlation between egg number and BWT40 showed no definite trend. In the female line, correlated response in age ASM and BWT40 had negative values. In the male line however except for BWT40 which showed a positive correlated response of 3.4g/year, all other traits showed negative correlated responses. Generally it was evident that selection was more effective in improving the egg number in the female line than in the male line showing an increase of 1.67 vs 0.19 eggs per year in the female and male lines, respectively. The low egg number reported was as a result of the delay in sexual maturity especially during the later years of the selection experiment. Another factor that may have contributed to the variable response achieved from generation to generation may also be due to varying season of hatching across generation. However the positive response in the female line population may be attributed to reduced age at sexual maturity.
  I.D. Mohammed , B.A. Abdullahi and I.A. Adeyinka
  A study was conducted in semi-arid north east Nigeria between 1995 and 1998 through monthly visits to 950 grazing units of agropastoral goats distributed in three study locations of Jakusko, Dapchi and Jajimaji on performance of Borno white goat breed. Using mature Borno white does events such as births, pre and post weaning mortalities, milk production, growth at (1, 3 and 6 months), linear body measurements, age at first kidding, kidding interval were all recorded or calculated and analysed using the general linear model involving 324 kiddings. The Borno white goat recorded 1.94 kg and 1.92 kg birth weight; 4.82 kg and 4.73 kg (1 month); 8.24 kg and 8.09 kg (3 months) and 12.69 kg and 13.44 kg (6 months) and 2115 kg and 23.25 kg (mature) body weights for males and females respectively. Milk production and composition was 147.50 mL day 1; total solids 10.47, 4.52% protein, 4.59% fat, 5.89% solid non fat, 0.92% calcium, 0.52% phosphorus. Adult percent mortalities were 26.75% and 23.25% for males and females; while percent kid mortalities were 27.59, 26.64,and 25.00% for singles, twins and triplets, respectively. Age at first kidding, kidding interval (days) and litter size were 350.25, 251.92 and 2.04 respectively. Percent frequency of births as singles, twins and triplets were 30.74%, 64.66 and 4.59% respectively. Body weights for males and females were 4.50 kg and 3.49 kg (1 month); 8.80 kg and 9.30 kg (3 months) and 13.70 kg and 13.30 kg (6 months) of age respectively. Linear body measurements for males and females for height at withers (HAW) were 36.75 cm and 33.45 cm (1 month); 42.70 cm and 40.50 cm (3 months); and 46.61 cm and 48.40 cm (6 months) respectively. Heart girth (HG) values were 35.52 cm and 32.37 cm (1 month); 40.76 cm and 37.93 cm (3 months) and 46.20 cm and 43.33 cm (6 months) of age; while Body Length (BL) were 45.57 cm and 41.80 cm (1 month); 53.85 cm and 51.61 cm (3 months) and 61.60 cm and 60.02 cm (6 months) of age respectively. Mature linear body measurements for males and females were 61.43 cm and 65.73 cm heat girth; 55.70 cm and 50.25 cm body length and 59.75 cm and 61.35 cm height at withers, respectively. Results were all different (p<0.05) with males recording higher values than females in all parameters at the same age. Productivity index (kg/doe/year) for the Borno white goat was 18.72; while prediction equation for mature body weight was LW = - 12.64 + 0.148 (HG) + 0.195 (BL) + 0.051 (HAW). The productivity and reproductive traits of the agropastoral Borno white goat of semi-arid north east Nigeria are of great prospects for use in the near future; thus the genetic resource of the breed should be conserved.
  J.T. Amodu , I.A. Adeyinka , M.S. Kallah and J.P. Alawa
  An experiment was carried out in 2001 and 2002 at the Forage and Crop Residue Research Programme of the National Animal Production Research, Institute, Shika, Nigeria, to evaluate the yield components and nutrient composition of three accessions of pearl millet (Mokwa, Bunkure and Kankara). The three accessions were planted in completely randomized block design in three replications. Sowing was carried out in both years of the trial at the rate of 4 kg seeds per hectare on 10x7.5 m plot. Parameters assessed included plant height, number of tillers/culm, percentage green, leaf:stem ratio, fodder yield (fresh and dry weights). CP, CF, EE, NFE, ash, P, Ca and Mg. Results showed that at 116 post-planting, there were varietal differences in height, tillering ability, leafiness and greenness, which were found significant (p<0.05). The Bunkure accession which was taller, greener and higher in number of tillers had the highest fodder yield of 9.07 and 7.32 t ha-1 of fresh weight and dry weight, respectively. In the three accessions there were no significant differences (p>0.05) in the leaf:stem ratio. Differences between accessions in terms of EE, NFE and P were not significantly different (p>0.05) while significant differences were noticed in ash, CP, CF and Mg content of the millet accessions.
  I.D. Mohammed , M. Baulube and I.A. Adeyinka
  A study on the formulation and production of multi-nutrient blocks for feeding ruminants using local feed ingredients was conducted at the University of Maiduguri Teaching and Research Farm in October, 2004. Two formulations (Fl and F2) were developed where Fl had molasses while F2 had no molasses. Other feed ingredients used included salt 5 %; Urea 5%; cement 15%; poultry litter 25%; cotton seed cake 15% while wheat offal was 25 and 35%, respectively. Molasses was 10% in F1 and zero percent in F2. Composition of feed ingredients for dry matter ranges from 94.50 to 95.20% in wheat offal; crude protein ranged from 2.90% in molasses to 17.00% in cotton seed cake. Ether extract values ranged from 4.00% in wheat offal to 6.00% in cotton seed cake. Crude fibre ranged from 13.00% in wheat offal to 20.00% in poultry litter. Nitrogen free extract ranged from 23.00% in molasses to 64.20% in wheat offal. Ash values ranged from 3.00% in wheat offal to 6.00% in poultry litter. Calcium values ranged from 0.14% in wheat offal to 2.50% in poultry litter. Sodium was 39.34% in salt; chlorine was 60.00% in salt; nitrogen was 46.00% in urea; iron was 21.45 ppm in cement; manganese was 179 ppm in cement; magnesium 13000 ppm in cement, respectively. Formulation Fl had higher values and this might be due to the presence of molasses which improved the nutrient value, compactness and hardness. The cost effectiveness of the two formulations showed N 43:00 and N 21:00 for a 1.30 kg block this amount could be able afforded by farmers to purchase the blocks and supplement their animals to improve livestock production in the semi-arid region of Nigeria.
  F.O. Abeke , S.O. Ogundipe , S. Oladele , A.A. Sekoni , I.I. Dafwang , I.A. Adeyinka , O.O. Oni and A. Abeke
  The effect of duration of cooking of Lablab purpureus beans on the performance, organ weight and haematological parameters of Shika-brown pullet chicks from 0-8 weeks was investigated. Eight dietary treatments of which seven in which Lablab purpureus beans cooked for 0, 10, 20, 30, 40, 50 and 60 min) was included and a control (Corn-Soyacake-Groundnut-cake based diet) were formulated. These were replicated three times with 25 birds per replicate in a complete randomized design. The birds were managed under the deep litter system. Results obtained showed that cooking time had significant (p< 0.05) improvement on performance characteristics such as final weight, weight gain, feed conversion efficiency and percent mortality. Organ weights such as the liver, the heart and the pancreas decreased as the duration of cooking increased while haematological parameters such as the Total Protein (TP) the Packed Cell Volume (PCV) and the Haemoglobin (Hb) increased slightly, (although not significantly) in the blood up to about 30 min of cooking before decreasing as the duration of cooking continued to increase. These observations are indications that higher durations of cooking up to about 30 min render the nutrients in the raw lablab seeds more available for utilization by the birds.
  M. Kabir , O.O. Oni , G.N. Akpa and I.A. Adeyinka
  Data on body weight and shank length measurement of 361 birds from 5 hatches, one week apart were analysed to obtain heritability estimates for body weight and shank length at 20, 30 and 40 weeks of age, as well as to establish the genetic and phenotypic correlations between the traits. The mean values for body weight at various ages showed good performance of all birds. The heritability estimates observed for body weight and shank length decreases with increasing age of birds. This observation agreed with the reports of some workers and disagreed with the findings of others. Differences however, in heritability estimates could be attributed to differences in method of estimation, breed, environmental effects and sampling error due to small data or sample size. There were positively high genetic and phenotypic correlations between body weight and shank length at these ages. The coefficient of genetic correlation (rg) ranged between 0.582 and 0.645, while the coefficient of phenotypic correlation (rp) ranged between 0.613 and 0.816. High and positive genetic and phenotypic correlations between body weight and shank length suggest that it was possible to predict body weight of live Rhode Island chickens on the basis of their shank length measurement, as an aid to farmers in areas where sensitive weighing scales are not readily available.
  M. Orunmuyi , I.A. Adeyinka , O.A. Ojo and F.D. Adeyinka
  One hundred and eleven litter records obtained from the mating of 8 bucks to 22 does of a non-descript population were used to provide estimates of heritability and genetic correlations for pre-weaning litter traits. Least square means and standard errors for fur score, litter size at birth, litter size at weaning and weaning weight were: 30.3±0.17, 3.72±0.12, 4.8±0.12, 3.6±0.14 and 480.70±22.43 g, respectively. The least square analysis of variance revealed that most of the productive traits studied exerted significant effect on weaning weight with the exception of litter size at birth and gestation length. Heritability estimates obtained for gestation length, fur score, litter size at birth, litter size at weaning and weaning weight were 0.60±0.39, 1.46±0.56, 1.09±0.51, 1.49±0.59 and 1.07±0.51, respectively. Genetic correlations were high and positive in most cases with the exception of correlations between gestation length and weaning weight and litter size at weaning and weaning weight which were negative. Phenotypic correlations were also high and positive in most cases except for gestation length and fur score and gestation length and weaning weight which were negative.
  M. Orunmuyi , G.S. Bawa , F.D. Adeyinka , O.M. Daudu and I.A. Adeyinka
  A total of forty (40) growing rabbits with an average initial weight of 921.5g were randomly allotted to five dietary treatments containing 0, 10, 20, 30 and 40% palm kernel cake as replacement for soyabean cake respectively. All diets were formulated to be isonitrogenous (20% CP). The final live weights of the rabbits were higher in the control diet compared to those on palm kernel cake diets. With the exception of the rabbits placed on 40% level of palm kernel cake daily feed intake, daily weight gain and feed efficiency values compared favourably with those on control diet. Carcass weight and weight of primal cuts expressed as percentage of carcass weight did not show any significant difference between the treatment means. Animals on 40% palm kernel cake diets had the highest (P< 0.05) cost per kg gain compared to those on other dietary treatments. It was concluded that palm kernel cake can be used up to 30% level in a maize – soyabean meal based diet for grower rabbits without adverse effect on the performance of the animals.
  T.S.B. Tegbe , I.A. Adeyinka , K.D. Baye and J.P. Alawa
  Twenty weaner rabbits of average initial weight of 535g were fed four diets containing milled Ficus thonningii leaf meal at 0% 5% 10% and 15% levels to evaluate its effect on their growth performance and carcass characteristics. Rabbits were randomly allotted to cages and four dietary treatments randomly allotted to cages. There were five replications of the four treatments in a randomized block design trial. The study lasted eleven weeks. Dietary treatments did not significantly (P>0.05) affect average daily feed intake, average daily weight gain, carcass and organ characteristics. However, feed to gain ratio was significantly (P< 0.05) affected by level of feeding Ficus thonningii. It was concluded that Ficus thonningii leaf meal could be fed up to 15% level in rabbit diet.
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