FACULTY OF AGRICULTURE
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Item Performance and carcass characteristics of broiler chicken fed soybean and sesame/soybean based diets supplemented with or without microbial phytase(2014-07) Omojola, A. B.; Otunla, T. A.; Olusola, O. O.; Adebiyi, O. A.; Ologhobo, A. D.Aims: The experiment was conducted to investigate the performance and carcass characteristics of meat-type chicken fed Soybean Meal (SBM) and Sesame/Soybean Meal (SSBM) supplemented with or without microbial phytase. Study Design: The experiment employed a complete randomized design; all data generated were subjected to analysis of variance, P=0.05. Place and Duration of Study: The study was carried out at the Teaching and Research Farm of the University of Ibadan, Nigeria, between October and December, 2011. Methodology: One hundred and sixty-eight unsexed two weeks old Arbor Acre strain chickens were used in a 35-day feeding trial. Two feeding regimes of soybean meal and Sesame/soybean meal based diets were formulated. Each feeding regime comprised of control diet and two levels of phytase units (300 and 600 FTU/kg) of 500 unit /g activity making a total of six dietary treatments. The birds were fed the experimental diets for a 35- and Feed Conversion Ratio (FCR). At the end of the feeding trial, three birds were slaughtered per replicate to evaluate carcass and meat characteristics. Results: The addition of phytase improved the birds’ performance, FI and FCR. Significant (P<0.05) increase was obtained for apparent retention of nitrogen (67.22%), ash (74.85%), ether extract (65.43%), crude fibre (76.22%) and Phosphorus (45.58%). Cooking loss values increased while the Water Holding Capacity (WHC) reduced with microbial phytase supplementation. Conclusion: Sesame/soybean diet supplemented with 300 FTU/Kg microbial phytase gave optimum performance and should probably be adopted as the feeding regime of choice since it also resulted in better nutrient utilization by the birds.Item Performance and tenderness of meat-type chicken fed soybean and benniseed based diets supplemented with microbial phytase(Animal Science Association of Nigeria, 2010-09) Adetoro, B. O.; Olusola, O. O.; Omojola, A. B.; Ologhobo, A. D.; Adebiyi, O. A.This experiment was designed to investigate the performance and shear-force (tenderness) of meat-type chicken (broiler) fed Soybean Meal (SBM) and Benniseed based diets supplemented with microbial phytase. 168 Arbor acre strain of broiler chicks were used with Phytase activity of5000 units/ g, two levels of phytase inclusion were used in the study (300 and 600 FTU/kg) in a completely randomized design Birds were allotted into six treatments, with four replicates of 7 birds per replicate. Parameters measured include Body Weight Gain (BWG), Feed Intake (FI) and Feed Conversion Ratio (FCR) which were measured weekly. 2 birds/ replicate were sacrificed at the end of 56days trial and birds were eviscerated and split into primal cuts (thigh, breast and drumstick). The boiled primal cuts were used for the Shear-force assessment. At the end of the 56 days, the FI revealed a significant increase in birds fed Benniseed based diet with 300FTU (101.98g/bird/day) compared to birds on SBM (93.23g/bird/day) and birds fed Benniseed based diet also had the best BWG of2212.50 g compared to SBM based diet with 1557.50g both with 300FTU phytase activity. The birds on Benniseed based diets also had a more tender muscle.Item Performance, blood chemistry and serum electrolytes of broilers given water from different sources(Animal Science Association of Nigeria, 2018) Adeyemo, G. O.; Kabir, A. O.; Tanimowo, D. A.; Ologhobo, A. D.The role of water sources in broiler performance was assessed using 168 Abor Acre broiler birds. The birds were randomly allotted to 4 treatments (Treatment 1(T1) - tap water, Treatment 2 (T2) – bore-hole water, Treatment 3 (T3) – well water and Treatment 4 (T4) – river water), with 6 replicates each in a completely randomized design. The initial weight was measured at hatch and subsequently on weekly basis till the final week of study. Feed intake and conversion ratio were recorded and computed, while rectal temperature was obtained using a clinical thermometer inserted into the rectum of the broiler chicken. On day 42, blood was collected via the jugular vein into sample bottles for hematological and serum electrolyte assay. Data obtained were analyzed and means separated using Duncan Multiple Range Test (DMRT). Water source was observed to significantly influence rectal temperature at the 4th week, with birds served borehole water having higher rectal temperature than birds served river water. Source of water offered to the birds was also observed to influence (p<0.05) serum levels of sodium, calcium, potassium and phosphorus. Sodium level was significantly higher in birds offered river water, while borehole water resulted in significantly higher phosphorus level in broiler chicken.Item Response of broiler chickens to carica papaya and talinium triangulare leaf meal under normal and subnormal diets(Sciencedomain International, 2018) Agboola, B. E.; Ologhobo, A. D.; Adejumo, I. O.; Adeyemo, G. O.The use of locally available and cheap feed ingredients has received particular attention as a viable alternative to the use of conventional feedstuffs in developing countries. Vegetable-based feeds are rich sources of essential plant amino acids, vitamins, minerals, and antioxidants. Further to the rich contents mentioned, it has been established that green vegetable leaves are cheap and abundant sources of protein because of their ability to synthesize amino acids from a wide range of available primary materials. The aim of this study was to investigate the response of broiler chickens to Carica papaya and Talinium triangulare under normal and subnormal diets. In this study, the effects of C. papayaleaf meal and T. triangulare chopped leaves were assessed on growth performance and haematological parameters of broiler chickens. Two hundred and seventy 1-d old Arbor acres broiler chicks were used for the study. Each treatment had 5.replicates with 6 birds per replicate. Normal diets and subnormal diets were compounded with varying amounts of ingredients. The test ingredients were supplied at the rate of 10% of the main diets. The design of the experiment was a completely randomized design. All the treatments with subnormal diets obtained higher feed intake than treatments with normal diets. Birds on subnormal diet mixed with C. papaya leaf meal (24.03%) obtained the highest packed cell volume. The haemoglobin concentrations followed a similar pattern. Normal diets compared with control for feed conversion ratio.Item Effect of Ad-libitum, split and restricted feeding on performance, digestibility and welfare of broiler chicken(Sciencedomain International, 2017) Adeyemo, G. O.; Badmus, R. T.; Longe, O. G.; Ologhobo, A. D.An experiment was conducted to assess the performance, welfare and digestibility of broilers fed varying forms of feeding regimes. The objective of this work research was investigate the possibility of improving growth performances, digestibility and welfare of broilers using ad libitum, split and restricted feeding. Formulated diet was given in four different forms Ad-libitum (Treatment 1) twice a day meal/split feeding (Treatment 2) thrice a day feeding (Treatment 3) 3 hours restriction feeding (Treatment 4). Experimental design was completely randomized design. 240 broilers were randomly allotted to four treatments with 6 replicates and 10 birds per replicate. Birds were weighed weekly to evaluate their performances, faeces was collected on day 42, to determine digestibility and rectal temperature was taken as a measure of bird's wellbeing. Results showed that there were no significant differences (p≥ 0.05) in performance of birds across treatments but values from birds fed Ad-libitum were higher. Rectal temperature (RT) differ at week 4, birds fed 3 hours restricted feeding had the highest RT (41.62°C) while the least RT were from birds fed Ad-libitum (41.20°C). Significant differences were obtained in digestibility and nutrient utilization of broilers with respect to feeding regimes. Crude protein (CP) digestibility was significantly higher in birds fed 3 hours restriction (81.91%) while birds fed Ad-libitum had the least (46.76%). The digestibility of crude fibre was higher in birds fed 3 hours restricted feeding regime (86.77%) the least was from birds fed thrice a day feeding regime (62.66%). A similar trend was obtained for digestibility of gross energy. Ad-libitum feeding had the highest non-significant performance values but split feeding optimized feed and nutrient utilization thereby enhancing performance and minimizing nutrient waste at the same time.Item Performance and tibia characteristics of chickens fed cassava chips supplemented with Dl-methionine(Sciencedomain International, 2016) Ologhobo, A. D.; Etop, S.; Ogunwole, O. A.; Adeyemo, G. O.; Adejumo, I. O.; Adeoye, D.This study was carried out to investigate the effect of cassava chips and DL-methionine supplementation on performance and tibia bone characteristics of broiler chickens. Broiler chickens were randomly assigned to 20 treatments in a 4x5 factorial arrangement with 5 dietary levels of cassava chips (0, 25, 50, 75 and 100 corn replacement) and 4 dietary levels of DL-methionine supplementation (0, 0.05, 0.1 and 0.2% i.e. 0, ½ NRC, NRC and double NRC 1994 recommended levels). Data obtained were subjected to analysis of variance. At starter phase, birds on cassava chips-based diets had significantly (P<0.05) higher body weight gain (BWG) than the control. Those on 25% cassava chip-based diet compared well with the control. Methionine supplement improved BWG at both starter and finisher phases; Cassava chips supplemented with DL-methionine can replace corn 100.00% in broiler chickens diet.Item Optimizing the utilization of soybean and benniseed (in poultry feeds) through dietary supplementation with microbial phytase(Animal Science Association of Nigeria, 2006) Ologhobo, A. D.; Mosenthin, R; Adeyemo, G. OThe effects of microbial phytase (Natuphos® 5000) supplementation of corn-soybean and benniseed based diets were studied with two weeks old broiler birds on the parameters of growth performance, nutrient retention, and amino acid digestibility. One hundred and twenty chickens within a weight range of 190 to 210g were allotted in a completely randomised 2 x3 factorial arrangement to six dietary treatments. Body weight gain (g) 1074.17 + 12.26, feed intake (g) 1913.17 ± 15.60 and protein efficiency ratio 2.54 ± 0.16 were significantly (p '< 0.05) increased by phytase supplementation of soybean meal and benniseed diets. Significant (p •: 0.05) increases were also obtained for apparent retentions of dry matter (DM) 68.68 ± 3.72, nitrogen (N) 56.21 ± 2.83, phosphorus (P) 39.00 ± 2.14 and calcium (Ca) 58.78 ± 3.16 and apparent faecal digestibilities of protein (%) 8.11 ± 56 and amino acids. There were however significant (P • 0.05) differences in the magnitude of response by soybean meal and benniseed to phytase supplementation. For soybean meal diets, apparent retentions of N 55.74 ± 2.83 and p 37.88 ± 2.14 and protein digestibility 00.36 ± 1.20 increased-rapidly (p ■ 0.05) with 400 FTU/kg phytase but marginally with 800 FTU/kg phytase. On the contrary for benniseed diets, supplementation with 400 FTU/kg phytase increased amino acid digestibility marginally while 800 FTU/kg phytase significantly (p < 0.05) increased the digestibility of all amino acids.