scholarly journals Effect of feeding regime on growth performance of growing Yankasa rams fed basal diet of sorghum hay or silage supplemented with concentrate

2021 ◽  
Vol 48 (3) ◽  
pp. 162-172
Author(s):  
B. M. Munza ◽  
M. R. Hassan ◽  
R. J. Tanko ◽  
S. M. Yashim ◽  
D. Y. Salihu

Smallholder farmers in sub-Saharan Africa offer their stocks little or no supplementary feed but depend mostly on native pastures which are in low nutrient quality. The study was aimed at evaluating the effect of feeding regime on growth performance, nutrient metabolism, rumen indices and economics of production of Yankasa rams fed basal diets of grain sorghum hay or silage supplemented with concentrate. Sixteen growing Yankasa rams weighed 17.0±0.2 kg were randomly assigned to four feeding regime treatment: T1 = Sorghum hay + concentrate daily, T2  = Sorghum silage + concentrate daily, T3  = Sorghum silage  + concentrate  after  1-day  and  T4    =  Sorghum  silage  +  concentrate  after  2-days.          The parameters measured were hay intake, concentrate intake, total feed intake, daily feed intake, initial weight, final weight, weight gain, daily weight gain, feed conversion ratio (FCR), apparent nutrient digestibility, nitrogen balance and costs-benefit. The result showed that hay intake (25.28 – 29.23 kg), concentrate intake (6.19 – 19.41 kg), total feed intake (35.41 – 48.47 kg), daily weight gain (0.04 – 0.05 kg) and weight gain (2.85 – 3.35 kg) were significantly (P<0.05) affected by the feeding regime with rams fed silage + concentrate daily recording higher values. Better FCR was obtained in rams fed silage + concentrate after 2-days. Dry matter (79.22%), crude protein (85.59%), NDF (75.30%) and ADF (78.02%) digestibility coefficients were higher (P<0.05) for rams fed silage + concentrate after 1-day (every other day). The percentage of nitrogen absorbed and retained were higher (P<0.05) in rams fed silage + concentrate after 1-day (85.62 and 82.72%, respectively). The cost per kg gain of N1046.40 for rams fed hay + concentrate daily was significantly (P <0.05) lower than the cost per kg gain of other feeding regimes. It can be concluded that sorghum silage could be fed alongside concentrate daily for improved feed intake and weight gain, but for better cost-efficiency, it is recommended that farmers should feed hay and supplement concentrate daily to rams.     Les petits exploitants agricoles d'Afrique subsaharienne offrent peu ou pas d'aliments supplémentaires à leurs stocks, mais dépendent principalement de pâturages indigènes de faible qualité nutritive. L'étude visait à évaluer l'effet du régime alimentaire sur la performance de croissance, le métabolisme des nutriments, les indices rumen et l'économie de la production de béliers Yankasa nourris à des régimes basaux de foin de sorgho de grain ou d'ensilage complétés par du concentré. Seize béliers Yankasa en croissance pesaient 17,0±0,2 kg ont été assignés au hasard à quatre traitements du régime alimentaire : T1 = foin de Sorgho + concentré tous les jours, T2 = ensilage de Sorgho + concentré tous les jours, T3 de Sorgho + concentré après 1 jour et T4 = ensilage de Sorgho + concentré après 2 jours. Les paramètres mesurés étaient l'apport en foin, l'apport en concentré, la consommation totale d'aliments pour animaux, l'apport quotidien en aliments pour animaux, le poids initial, le poids final, le gain de poids quotidien, le rapport de conversion des aliments pour animaux (FCR), la digestibilité apparente des éléments nutritifs, l'équilibre azoté et les coûts-avantages. Le résultat a montré que l'apport en foin (25.28 à 29.23 kg), l'apport en concentré (6.19 à 19.41 kg), la consommation totale d'aliments (35.41 à 48.47 kg), le gain de poids quotidien (0,04 à 0,05 kg) et le gain de poids (2.85 à 3.35 kg) ont été considérablement (P<0.05) affectés par le régime d'alimentation avec des béliers nourris à l'ensilage + concentré enregistrant quotidiennement des valeurs plus élevées. Un meilleur FCR a été obtenu dans l'ensilage alimenté par bélier + concentré après 2 jours. Matière sèche (79.22 %), protéines brutes (85.59 %), NDF (75.30 %) et ADF (78.02%) les coefficients de digestibilité étaient plus élevés (P<0.05) pour les béliers nourris à l'ensilage après 1 jour (tous les deux jours). Le pourcentage d'azote absorbé et retenu était plus élevé (P<0.05) chez les béliers nourris à l'ensilage + concentré après 1 jour (85.62 et 82.72 %, respectivement). Le gain par kg de N1046.40 pour les béliers nourris quotidiennement au foin + concentré était significativement (P <0.05) inférieur au coût par kg de gain des autres régimes alimentaires. On peut conclure que l'ensilage de sorgho pourrait être alimenté aux côtés du concentré quotidien pour améliorer l'apport alimentaire et le gain de poids, mais pour une meilleure rentabilité, il est recommandé que les agriculteurs nourrissent le foin et complètent le concentré quotidiennement aux béliers

2020 ◽  
Vol 47 (2) ◽  
pp. 144-150
Author(s):  
O. J. Alabi ◽  
I. C. Alemede ◽  
S. S. A. Egena ◽  
C. O. Obari ◽  
C. Ewa ◽  
...  

This study was conducted to determine the growth performance and nutrient digestibility ofbroiler chickens fed wood-ash based diet. A total of 120 broiler chickens were randomlyallocated to four treatments in the completely randomized design. Treatment 1 was thecontrol while Treatments 2, 3, and 4 were Neem ash (NTA), Shea butter ash (SBA) and Locustbean ash (LBA), respectively. Each treatment has three replicates and ten birds per replicate.Data on growth rate, live weight, feed intake and mortality were collected while feedconversion ratio was calculated. Apparent dry matter, crude protein, crude fibre, etherextract and nitrogen free extract retention were also determined. All data collected wereanalyzed using one-way analysis of variance. Starter phase results shows that birds on SBA ash had the highest final weight (366.00 g), body weight gain (173.71 g) and feed intake (546.03 g) and were significantly higher (p<0.05) than the control. At the finisher phase, all ash treatment had higher (p<0.05) final, daily weight gain and better (p<0.05) feed conversion than the control dietary. The digestibility results indicated birds on LBA diet had the highest crude fibre and ash content. The study showed that wood ash influenced growth performance and nutrient retention of broiler chickens. Chickens on ash-based diets performed better that the control at the finisher phase. 


2020 ◽  
Vol 45 (5) ◽  
pp. 100-106
Author(s):  
H. Ibrahim ◽  
O. J. Olaniyi

The experiment was carried out to determine the effect of replacement of maize with sweet potato (Ipomoea batatas lam.) on growth performance and cost of feeding weaner rabbits (Oryctolagus cuniculus). A total number of thirty-six (36) weaned rabbit of mixed sexes were used for the experiment. The rabbits were allotted randomly into four dietary treatments and replicated thrice with three rabbits per replicate and were designated: control (T): normal 1 compounded diet without sweet potato peel meal, T had the compounded feed which 5% 2 sweet potato peel meal, T had compounded diet with 10% sweet potato peel meal and 3 treatment four (T) had the compounded diet with 15% sweet potato peel meal. The 4 experiment lasted eight weeks and data were obtained on growth performance and cost benefit. The parameters considered on growth performance include initial weight, final weight, total body weight gain, daily weight gain, weekly weight gain, daily feed intake, total feed intake and feed conversion ratio while that of cost benefit include cost of purchasing different experimental feed stuff. The results obtained on growth performance showed that there were no significant differences (p>0.05) in the parameters monitored. Cost of feeding was also not significantly different (p>0.05). However, higher profit index (174. 64) was recorded in T1 and lower benefit cost ratio (166.68) was recorded in T4 for total cost of feed intake per rabbit. In conclusion, sweet potato peel meal can be uses as a good replacement for maize in rabbit production without any adverse effect on the performance of rabbit.


2020 ◽  
Vol 47 (3) ◽  
pp. 67-76
Author(s):  
D. N. Onunkwo ◽  
O. A. Ekine

This study was conducted to assess the effects of abattoir wastes (bovine blood and rumen content mixture) on the haematology and growth performance characteristics of broiler birds. One hundred and twenty (120) unsexed day old Abor acre broiler chicks were randomly assigned to 4 treatments and replicated 3 times in a completely randomized design (CRD) experiment. Four experimental diets were formulated to meet the nutrient requirement of broilers such that the birds were fed sundried abattoir waste (bovine blood and rumen content mixture) included at 0%, 5%, 10% and 15% representing Diet 1, 2, 3 and 4 respectively, with Diet 1 as the control. Each dietary treatment consists of 30 birds with 10 birds per replicate. The experimental diets and clean water were supplied at- libitum throughout the experimental period. Data were collected on feed intake, daily weight gain, final body weight, weight gain. Feed conversion ratios were calculated. Blood samples for hematology was collected, analyzed and recorded. At the end of the 56 days feeding trials, data collected on different parameters were subjected to analysis of variance (ANOVA). Results showed that mixtures of bovine blood and rumen content significantly (P<0.05) improved the final weight (1767.02g -1931.44g), weight gain (1367.02g -1528.44g), feed intake (107.47g -118.99g) and feed conversion ratio (4.87 – 4.08) of the broilers. Significant (P<0.05) improvements were observed on the RBC, WBC, MCV, MCH, eosinophyls and the lymphocytes of the haematological parameters of the broilers. These results showed the complementary potentials of bovine blood and rumen content mixture in broiler diets, which can be included up to 15% in the ration of broilers without detrimentally affecting the growth performance and haematology of the broilers.


2021 ◽  
Vol 48 (3) ◽  
pp. 86-92
Author(s):  
C. O. Akure ◽  
A. A. Sekoni ◽  
F. O. Abeke ◽  
P. A. Vantsawa ◽  
B. Babasanya ◽  
...  

This study was carried out to evaluate the effect of 45 minutes Boiled Mucuna Seed Meal (BMSM) on the growth performance and nutrient digestibility of broiler finisher chicks. In a four-week feeding trial, three hundred and fifteen (315),4-week old broiler chicks were  randomly allocated to five experimental treatment diets in a completely randomized design (CRD). Each treatment was replicated thrice having twenty-one (21) birds per pen. Boiled Mucuna seed meal was prepared and fed in graded levels of 0.0% (control diet), 10.0%, 20.0%, 30.0%, and 40.0%BMSM. Feed and water were given to the birds ad libitum. The parameters measured and calculated include final weight, weight gain, feed intake, feed to gain ratio and feed cost per kilogram gain. Digestibility of dry matter, crude protein; crude fibre, ash, nitrogen free extract and ether extract were also determined. The data collected were subjected to analysis of variance (ANOVA). The results showed that dietary levels of inclusion of BMSM had significant (P<0.05) effect on these parameters. The final weight, the weight gain and feed intake of the birds fed 0.0%, 10.0% and 20.0%BMSM were statistically (P>0.05) similar and significantly (P<0.05) higher than those of other treatments. Cost of feed per birds and feed cost per kilogram gain were lower for all BMSB diets.Digestibility of nutrients was better for the birds fed the control,10.0 and 20.0%BMSM based diets. It was concluded that inclusion of BMSM in the diets of broiler finisher chicks up to20% has no deleterious effect on growth performance and nutrient digestibility of the birds.     Cette étude a été réalisée pour évaluer l'effet de 45 minutes de farine de graines de Mucuna (le 'BMSM') bouillie sur la performance de croissance et la digestibilité des éléments nutritifs des poussins finisseurs de poulet à griller. Dans un teste d'alimentation de quatre semaines, trois cent quinze (315), poussins de poulet de griller de 4 semaines ont été aléatoirement attribués à cinq régimes expérimentaux de traitement dans une conception complètement randomisée (le 'CRD'). Chaque traitement a été reproduit trois fois avec vingt et un (21) oiseaux par enclos. Le repas bouilli de graine de Mucuna a été préparé et alimenté dans les niveaux classés de 0.0% (régime de contrôle), 10.0%, 20.0%, 30.0%, et 40.0%BMSM. L'alimentation et l'eau ont été données aux oiseaux ad libitum. Les paramètres mesurés et calculés comprennent le poids final, le gain de poids, la prise d'aliments pour animaux, le rapport alimentation/gain et le coût des aliments pour animaux par gain kilogramme. La digestibilité de la matière sèche, protéines brutes; des fibres brutes, des cendres, de l'extrait sans azote et de l'extrait d'éther ont également été déterminés. Les données recueillies ont fait l'objet d'une analyse de la variance (ANOVA). Les résultats ont montré que les niveaux diététiques d'inclusion de 'BMSM' ont eu un effet significatif (P<0.05) sur ces paramètres. Le poids final, le gain de poids et la prise d'alimentation des oiseaux nourris 0.0%, 10.0% et 20.0%BMSM étaient statistiquement (P>0.05) semblables et significativement (P<0.05) plus élevés que ceux des autres traitements. Le coût de l'alimentation animale par oiseau et le coût de l'alimentation par kilogramme étaient inférieurs pour tous les régimes BMSB. La digestibilité des éléments nutritifs était meilleure pour les oiseaux alimentés le contrôle,10.0 et 20.0% BMSM régimes à base. Il a été conclu que l'inclusion du BMSM dans l'alimentation des poussins finisseurs de poulet de gril jusqu'à 20 % n'a aucun effet délétère sur la performance de croissance et la digestibilité des oiseaux en matière d'éléments nutritifs.


Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 847
Author(s):  
Eugeniusz R. Grela ◽  
Siemowit Muszyński ◽  
Anna Czech ◽  
Janine Donaldson ◽  
Piotr Stanisławski ◽  
...  

The objective of the current study is to assess the effects of the inclusion of 6-n phytase to a phosphorous-deficient diet on the growth performance (feed intake, average daily gain, and feed conversion ratio), apparent digestibility of calcium and phosphorus, and bone characteristics of grower–finisher pigs. The experimental diets included a phosphorus-deficient diet containing 0 (negative control), 250, 500, 1000, or 1500 FTU/kg of 6-phytase, and a diet formulated to meet the phosphorus nutrient requirements of pigs (positive control). Pigs were fed the experimental diets from the time they were ~35 kg body weight until they reached slaughter weight of ~110 kg. Bone status of the metacarpal (ash, mineral content) and femur (mineralization, geometry, and mechanical strength) bones were assessed. There was no effect of dietary treatment on feed intake. Feed conversion ratio was improved following inclusion of phytase at a dose of 500 FTU/kg or higher. Phytase inclusion at a dose of 1000 FTU/kg increased the average daily weight gain of grower–finisher pigs. Phytase inclusion at a dose of 500 FTU/kg was sufficient to increase metacarpal phosphorus content. Femur mid-diaphysis ash percentage was significantly increased even after the inclusion of the lowest dose of phytase. Analysis of structural parameters of femur mechanical strength (Young’s modulus, yield stress, yield strain, ultimate stress, ultimate strain) showed that the inclusion of a phytase dose of 500 FTU/kg in growing/finishing diets was sufficient to significantly improve bone status of grower–finisher pigs at slaughter.


2010 ◽  
Vol 55 (No. 9) ◽  
pp. 382-387 ◽  
Author(s):  
S.R. Shi ◽  
Z.Y. Wang ◽  
J.M. Zou ◽  
H.M. Yang ◽  
N. Jiang

&nbsp;A dose-response experiment with 5 total dietary threonine (Thr) levels (0.54, 0.64, 0.74, 0.84 and 0.94%) was conducted to study the effect of dietary Thr on growth performance and carcass traits of Yangzhou geese from 0 to 8 weeks of age. Three hundred 1-day-old Yangzhou goslings were randomly allocated to 15 pens with 20 birds (10 males and 10 females) per pen according to similar pen weight. There were 5 dietary treatments, consisting of 3 replicate pens. Weight gain, feed intake and feed/gain of geese from each pen were measured at 2-week intervals from 0 to 8 weeks. At 56 days of age, four geese (2 males and 2 females) were selected randomly from each pen and slaughtered to evaluate the carcass quality. The results showed that an increase in dietary Thr resulted in an increase and then a decrease in daily weight gain in both periods. Peak daily weight gain responses appeared in geese fed the 0.74%Thr diet in both periods (36.120 and 61.96 g, respectively). Thr supplementation significantly affected feed/gain in the 0&ndash;4 week period (P &le; 0.045) and daily feed intake in the 5&ndash;8 week period (P &le; 0.012). No significant linear or quadratic responses from Thr supplementation were observed in growth performance and carcass traits of geese except for eviscerated carcass percentage (quadratic effect, P &le; 0.016). The optimal Thr requirement of Yangzhou geese from 0 to 8 weeks of age was 0.726% for eviscerated carcass percentage. The results of our experiment reported herein would document that the Thr requirements suggested by NRC (1994) for geese up to 8 weeks of age are safe estimates; they may slightly overestimate the requirements but not by a large margin.


2021 ◽  
Vol 48 (1) ◽  
pp. 166-174
Author(s):  
E. Opoola ◽  
C. Z. Kahuwai ◽  
T. S. Olugbemi

An experiment was conducted to evaluate efficacy of Lacto acidophilus on the growth performance, carcass characteristics and nutrient digestibility of broiler chickens. Two hundred and twenty five (225), one day old chicks were purchased from local commercial hatchery and were randomly divided into 5 groups and each group had 3 replicates of 17 chicks in a completely randomized design. Five iso-caloric and iso-nitrogenous (ME 2998kcal/ kg and CP 23.21%) broiler starter and finisher (ME 2990 kcal/ kg and CP 20.33%) experimental diets containing 0, 150, 200 and 250g Lacto acidophilus® for T1-T4 respectively and T5 containing Oxytetracycline were formulated. Broiler starter and finisher diets were fed from 0-3 and 4-7 weeks, respectively. Data obtained were subjected to analysis of variance using Statistical Analysis System and significant differences between treatments means were separated using Duncan Multiple Range Test. There were significant (P<0.05) difference in final weight, weight gain, average daily weight gain (ADWG), total feed intake (TFI), average daily feed intake (ADFI), feed conversion ratio (FCR) and feed cost/kg gain across the treatment groups. It was observed that chickens fed dietary Oxytet (oxytetracycline) had the best results in terms of the final body weight, weight gain and ADWG but similar to those fed 150 and 200g Lacto acidophilus® addition levels. The percentage dry matter (DM), crude protein (CP), crude fibre (CF), ether extracts (EE) and ash retention increased with increase in Lacto acidophilus® inclusion with exception for 250gLacto acidophilus® inclusion (CP, CF, EE). However, it was observed that chickens fed dietary levels of Lacto acidophilus® had the best live weight, dressed weight and dressing percentage compared to the control group. It was concluded that chickens fe Lacto acidophilus® inclusion may as well compete favorably with antibiotics growth promoter fed chickens.     Une expérience a été menée pour évaluer l'efficacité de Lacto acidophilus sur la performance de croissance, les caractéristiques de la carcasse et la digestibilité nutritive des poulets de gril. Deux cent vingt-cinq (225), poussins d'un jour ont été achetés à l'écloserie commerciale locale et ont été répartis au hasard en 5 groupes et chaque groupe avait 3 répliques de 17 poussins dans une conception complètement randomisée. Cinq iso- caloriques et iso-azotés (le 'ME' 2998kcal/kg et le 'CP' 23.21%) démarreur et finisseur de poulet de gril (le 'ME' 2990 kcal/kg et le 'CP' 20.33%) des régimes expérimentaux contenant respectivement 0, 150, 200 et 250 g d'acidophilus lacto® pour le T1-T4 et le T5 contenant de l'Oxytetracycline ont été formulés. Les régimes d'entrée et de finisseur de poulet de gril ont été alimentés de 0-3 et 4-7 semaines, respectivement. Les données obtenues ont fait l'objet d'une analyse de la variance à l'aide du système d'analyse statistique et des différences significatives entre les moyens de traitement et ils ont été séparées à l'aide du test à distance multiple Duncan. Il y avait une différence significative (P<0,05) dans le poids final, le gain de poids, le gain de poids quotidien moyen (le 'ADWG'), la consommation totale d'aliments pour animaux (le 'TFI'), l'apport quotidien moyen en aliments pour animaux (ADFI), le ratio de conversion des aliments pour animaux (FCR) et le gain coût/kg des aliments pour animaux dans les groupes de traitement. On a observé que les poulets nourris oxytet alimentaire (oxytetracycline) ont eu les meilleurs résultats en termes de poids corporel final, gain de poids et de 'ADWG', mais similaire à ceux nourris 150 et 200g Lacto acidophilus® niveaux d'addition. Le pourcentage de matière sèche (le 'DM'), de protéines brutes (le 'CP'), de fibres brutes (le 'CF'), d'extraits d'éther (le 'EE') et de rétention de cendres a augmenté avec l'augmentation de lacto acidophilus® l'inclusion à l'exception de 250 glacto acidophilus® inclusion (CP, CF, EE). Cependant, il a été observé que les poulets nourris à des niveaux alimentaires de Lacto acidophilus® avaient le meilleur poids réel, le poids habillé et le pourcentage de vinaigrette par rapport au groupe témoin. Il a été conclu que les poulets feLacto acidophilus® inclusion peut aussi bien rivaliser favorablement avec les antibiotiques promoteur de croissance nourris poulets.


2021 ◽  
pp. 1487-1491
Author(s):  
M. Ata ◽  
Belal S. Obeidat

Background and Aim: Grains, such as barley (BAR) and corn (CORN), are major energy sources for small ruminants. This study aimed to assess the impact of feeding either BAR or CORN-based diets on growth performance and carcass characteristics. Materials and Methods: Awassi male lambs, average body weight of 20.4±0.49 kg, were chosen randomly. Lambs were acclimated for 10 days and assigned to one of two diets (1) BAR and (2) CORN. Feeding continued for 70 days with 60 days of data collection. Daily intake was recorded. Measurements of body weight were taken starting from day 1 then once per week throughout the study period. On day 40, six lambs were randomly chosen from each group and placed in metabolism cages to assess digestibility and N balance. Lambs were slaughtered on the last day of the study to evaluate carcass characteristics and meat quality. Results: Neutral and acid detergent fiber and ether extract intake were greater (p≤0.05) for lambs fed the BAR diets. Nitrogen loss in feces tended to be greater (p=0.09) for the CORN diet. Eye muscle depth (mm) tended to be greater (p=0.07) for the BAR diet. Nutrient digestibility, daily weight gain, carcass characteristics, and meat quality were not different (p≥0.1) between diets. Conclusion: The results herein demonstrate that feeding BAR grain improved nutrient intake efficiency and consistency and did not affect weight gain and carcass traits. BAR-based diets might be a useful alternative to CORN for feeding growing lambs.


2021 ◽  
Vol 48 (5) ◽  
pp. 223-238
Author(s):  
S. O. Upah ◽  
A. I. Okwori ◽  
K. T. Orayaga

The high cost of feed has become a great challenge in poultry production. Good quality and cheap feed is therefore crucial for optimal growth performance of poultry chickens. In this study the effect of Euphorbia heterophylla Leaf Meal (EHLM) on the performance, carcass characteristics, nutrients digestibility and economics were evaluated. Broiler chicks numbering one hundred and eighty (180) of Ross 308 strain were fed for 4 weeks. The birds were randomly allotted to six experimental diets with three replications of 10 birds each. The diets were formulated with the inclusion of EHLMat 0, 5, 10, 15, 20 and 25% levels, for T1, T2, T3, T4, T5 and T6 which replaces soyabean meal respectively and data collected were subjected to analysis of variance in a completely randomized design. Results obtained indicated that the experimental diets significantly (P<0.05) affected the average feed intake and average daily protein intake, while the average daily weight gain, average feed conversion ratio, average daily protein efficiency ratio and average final live weight were not affected (P>0.05); mortality was not affected (P>0.05) by the diet. Carcass parameters, carcass cut and internal organs such as fasted liveweight, plucked weight, dressed weight, breast weight, thigh, drum stick, neck, shank and wings, heart, empty gizzard, lungs, spleen, pancreas, small intestine and esophagus weights showed no significant (P>0.05) difference while back, head, liver, proventriculus, kidney, abdominal fat, large intestine and caeca weight were significantly (P<0.05) different. The GIT length was affected (P<0.05) by the diet except the caeca length. The nutrient digestibility of CP and NFE did not showed significant (P>0.05) effect, but CF, EE and Ash were affected (P<0.05) by the dietary treatments. The nutrient digestibility of 5%, 10%, 15% and 25% were higher than the control diet(0%) for the five nutrients evaluated. The economics of production showed that feed cost (N/kg weight gain), total income (birds sold) and total profit (net gain) were not significantly (P>0.05) different while the feed cost (N/chicken), cost saving due to EHLM inclusion, total cost of production (N/chicken) and feed cost as percentage of total cost were significantly (P<0.05) affected by the test diets. The result showed that birds fed diet containing 15% have better economic advantage for optimum benefit. Therefore 15% EHLM replacement of soya bean is recommended for adoption for optimum growth performance, carcass yield, nutrient digestibility and economics of production in finisher broiler chicken.     Le coût élevé des aliments pour animaux est devenu un grand défi dans la production avicole.Une alimentation de bonne qualité et bon marché est donc cruciale pour des performances de croissance optimales des poulets de volaille. Dans cette étude, l'effet de la farine de feuilles d'Euphorbia heterophylla (EHLM) sur la performance, les caractéristiques de la carcasse, la digestibilité des nutriments et l'économie ont été évalués. Des poussins de chair au nombre de cent quatre-vingts (180) de souche Ross 308 ont été nourris pendant 4 semaines. Les oiseaux ont été répartis au hasard dans six régimes expérimentaux avec trois répétitions de 10 oiseaux chacune. Les régimes ont été formulés avec l'inclusion d'EHLM à 0, 5, 10, 15, 20 et 25%, pour T1, T2, T3, T4, T5 et T6 qui remplace respectivement le tourteau de soja et les données collectées ont été soumises à une analyse de variance. dans une conception complètement aléatoire. Les résultats obtenus ont indiqué que les régimes expérimentaux affectaient significativement (P<0,05) la consommation alimentaire moyenne et la consommation quotidienne moyenne de protéines, tandis que le gain de poids quotidien moyen, le rapport de conversion alimentaire moyen, le rapport d'efficacité protéique moye quotidien et le poids vif final moyen n'étaient pas affectés ( P>0,05) ; la mortalité n'a pas été affectée (P>0,05) par le régime alimentaire. Les paramètres de la carcasse, la coupe de la carcasse et les organes internes tels que le poids vif à jeun, le poids plumé, le poids paré, le poids de la poitrine, le poids de la cuisse, de la baguette, du cou, du jarret et des ailes, le poids du cœur, du gésier vide, des poumons, de la rate, du pancréas, de l'intestin grêle et de l'œsophage ont été montrés aucune différence significative (P> 0,05) alors que le poids du dos, de la tête, du foie, du proventricule, des reins, de la graisse abdominale, du gros intestin et des caeca étaient significativement différents (P< 0,05). La longueur GIT a été affectée (P < 0,05) par le régime, à l'exception de la longueur des caeca. La digestibilité des nutriments du CP et du NFE n'a pas montré d'effet significatif (P>0,05), mais CF, EE et Ash ont été affectés (P<0,05) par les traitements diététiques. La digestibilité des nutriments de 5 %, 10 %, 15 % et 25 % était supérieure à celle du régime témoin (0 %) pour les cinq nutriments évalués. L'économie de la production a montré que le coût de l'alimentation (N/kg de gain de poids), le revenu total (oiseaux vendus) et le bénéfice total (gain net) n'étaient pas significativement différents (P>0,05) alors que le coût de l'alimentation (N/poulet), la réduction des coûts en raison de l'inclusion de l'EHLM, le coût total de production (N/poulet) et le coût des aliments en pourcentage du coût total ont été significativement (P<0,05) affectés par les régimes d'essai. Le résultat a montré que les oiseaux nourris avec un régime contenant 15 % ont un meilleur avantage économique pour un bénéfice optimal. Par conséquent, il est recommandé d'adopter un remplacement EHLM de 15 % du soja pour des performances de croissance optimales, un rendement en carcasse, une digestibilité des éléments nutritifs et des économies de production dans le poulet de chair de finition. 


2020 ◽  
Vol 46 (4) ◽  
pp. 179-184
Author(s):  
C. C. Ekwe ◽  
I. Nwabueze ◽  
D. N. Onunkwo

An experiment was conducted to evaluate the comparative effect of feeding sundried sweet potato and its whole meal to weaner rabbits. The proximate analysis conducted revealed that sundried sweet potato meal and whole sundried sweet potato meal samples were rather low in protein contents as compared to maize. Twenty seven Weaner rabbits averaging 0.35kg were randomly allotted to 3 treatment groups in a completely randomized design. Each treatment group was replicated 3 times. Sundried Sweet potato meal and its whole meal replaced maize at 20% inclusion level. Treatments 1, 2, and 3 contained the control, sundried sweet potato meal (SSPM) and whole sundried sweet potato meal (WSSPM) respectively at 20% levels of inclusion. The weaner rabbits were fed ad-libitum throughout the experimental period. Significant differences (p<0.05) were observed for growth performance of the rabbits in average daily weight gain, average daily feed intake and feed conversion ratio in the weaner rabbits using sundried sweet potato and its whole meal. The values of mean daily weight gain ranged from 16.33g in treatment 2 (SSPM) to 18.47g in treatment 1 (control). Treatment 3 (WSSPM) gave a higher value that is comparable (p>0.05) to that of the control diet but better (p<0.05) than that of treatment 3 (SSPM). The values of average daily feed intake also ranged from 43g in treatment 2 (SSPM) to 50g in treatment 1 (control). WSSPM was consumed more than (p<0.05) than the SSPM which however influenced the cost of total feed consumed. Moreover, the values of feed conversion ratio (FCR) ranged from 2.54 in treatment 3 (WSSPM) to 2.70 in treatment 1 (control). Significant differences (p<0.05) were also observed in bio-economics of production of weaner rabbits using the test diets. The cost per kg feed, cost of total feed consumed per rabbit, cost per kg weight gain and revenue of the rabbits fed the test diets were significantly lower than the control diet however, the cost per kg weight gain was lower (p<0.05) for treatment 3 (WSSPM). For gross margin, WSSPM value was significantly higher (p<0.05) than SSPM value and the control diet. It was concluded that whole sundried sweet potato meal can be a good feed ingredient in rabbit diet.


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