The study was carried out to determine the growth performance, haematological and serum biochemical indices of weaner rabbits fed roselle (Hibiscus sabdariffa) calyx residue. Thirty (30) rabbits were allotted into five treatments with six rabbits per treatment. Each treatment was replicated three times with two rabbits per replicate. The rabbits were fed concentrates and varied levels of Tridax procumbens and roselle calyx residue (100 and 0% for T1, 75 and 25% for T2, 50 and 50% for T3, 25 and 75% for T4, 0% and 100% for T5 respectively). Parameters measured for growth performance are feed intake, weight gain and feed conversion ratio (FCR). The experiment lasted for four weeks, at the end of which blood samples were collected for haematological and serum biochemical indices. Results showed that rabbits in T4 had significantly higher average daily weight gain (15.66 g/r/d) and better FCR (0.72) when compared to other treatments. The white blood cells values varied significantly (p<0.05) across the dietary treatments in which rabbits in T4 recorded the highest value (6.30 x 103/mm3) which was statistically similar to those in T1 (6.13 x 103/mm3), while the lowest value was observed with rabbits in T3 (4.50 x 103/mm3). The neutrophils count observed ranged from 23.00 to 32.50% while the eosinophils count ranged from 1.50 to 3.00%. The result for serum biochemical indices showed that the dietary treatment did not significantly influence (p>0.05) the parameters measured except for Alanine Amino-transferase. The alanine amino-transferase value ranged significantly from 40.24 to 53.22 g/dL. It was therefore concluded that 75% of roselle calyx residue presented a better result in all parameters evaluated and can be recommended as a supplemental feed for growing rabbits.
Two hundred and forty (240), unsexed day old Arbor Acre broiler chicks were used to evaluate the effects of replacing whole kenaf (Hibiscus cannabinus L.) seed meal (WKSM) with full fat soybean meal (FFSM) in the diets on the performance and carcass characteristics of broiler chicken in a 2 x 4 factorial arrangement, consisting two processing methods (raw kenaf seed meal RKM and roasted kenaf seed meal HKM) and 4 inclusion levels (0%, 10%, 20% and 30%). Both RKM and HKM were analysed for anti-nutritive factors, data were collected on performance, carcass characteristics and cost benefit. The results of anti-nutritive factors (ANF) in RKM and HKM revealed that HKM had lower values of 0.045%, 0.029mg/g and 0.013mg/g for tannin, oxalate and phytic acid respectively when compared to 0.078%,0.124mg/g and 0.026mg/g obtained for RKM (P<0.05). The performance of broiler chicken showed that birds on 10% RKM with an average weight gain and FCR of (2640.00g and 2.48) competed favourably with the control (2554.67g and 2.45). The results of carcass characteristics showed that birds on 10% and 20% inclusion levels had significantly (P<0.05) higher values of 64.25% and 65.58% for dressed weight respectively. In terms of weight gain and FCR, birds fed RKM performed better than birds fed roasted kenaf meal HKM. About 5% feed cost savings was made when WKSM was included in the diets of broilers. It was concluded that RKM and RKM can replace FFSB in broiler diets up to 10% without any detrimental effect on performance and carcass quality.
Due to the emergence of drugs resistance microorganisms, side effects of antimicrobials and harmful residual toxicity effects of drugs observed in food chain, there is an increasing trend towards the use of alternatives for the general health maintenance. This study was carried out using 135 day old arbor acre chicks to evaluate the growth response, carcass and sensory evaluation of meat obtained from broiler chickens served two different organic acids. The chicks after brooded for a period of seven days were randomly distributed into five treatments group of 27 chicks per treatment replicated thrice with 9 birds per replicate in a completely randomized design (CRD). Treatment 1 served as the control without oral inclusion of organic acid, T had 2% citric acid, T had 4% citric acid, T had 2% acetic acid 2 3 4 and T had 4% acetic acid respectively while all administration was done two weeks at 5 starter phase and two weeks at finisher phase. parameter measured includes feed intake, weight gain, feed conversion ratio and mortality percentage while two birds per replicate making 6 per treatment were randomly selected, slaughtered and dissected for carcass, meat quality and sensory evaluation respectively. Result obtained showed no significant (P >0.05) difference in all growth parameters measured. Significant (P< 0.05) differences were obtained on the mean value recorded for drumstick, wing, neck, head and gizzard among all carcass parameters measured. Higher (P< 0.05) values for drumstick was obtained on T2 (11.17) followed by T and T (10.65 and 10.67) while the least values was recorded for T and 1 4 3 T (9.54 and 10.10). The same trend was observed for gizzard. Significant (P< 0.05) 5 differences were obtained in cooking loss recorded on breast muscle and on chilling loss recorded on thigh muscle and drumstick across the treatment for all parameters measured for meat quality attributes. Sensory evaluation results revealed similarities in the values obtained for colour, appearance, flavor, texture, taste and overall acceptance. Conclusively, the inclusion of citric and acetic acid orally for broilers had no detrimental effect on growth performance but enhance the quality of the carcass. En raison de l'émergence de micro-organismes résistants aux médicaments, des effets secondaires des antimicrobiens et des effets toxiques résiduels nocifs des médicaments observés dans la chaîne alimentaire, il existe une tendance croissante à l'utilisation d'alternatives pour le maintien de la santé générale. Cette étude a été réalisée en utilisant des poussins âgés de 135 jours pour évaluer la réponse de croissance, la carcasse et l'évaluation sensorielle de la viande obtenue à partir de poulets à griller servis avec deux acides organiques différents. Les poussins après avoir été couvés pendant une période de sept jours ont été répartis au hasard dans cinq groupes de traitements de 27 poussins par traitement répétés trois fois avec 9 oiseaux par répétition dans une conception complètement randomisée (CCR). Le traitement 1 a servi de contrôle sans inclusion orale d'acide organique, T avait 2 % d'acide citrique, T avait 4 % d'acide citrique, T avait 2 % d'acide 2 3 4 acétique et T avait 4 % d'acide acétique, respectivement, tandis que toute l'administration 5 était effectuée deux semaines à la phase de démarrage et deux semaines en phase finisher. Le paramètre mesuré comprend l'apport alimentaire, le gain de poids, l'indice de conversion alimentaire et le pourcentage de mortalité, tandis que deux oiseaux par répétition, soit 6 par traitement, ont été sélectionnés au hasard, abattus et disséqués pour la carcasse, la qualité de la viande et l'évaluation sensorielle, respectivement. Le résultat obtenu n'a montré aucune différence significative (P > 0,05) dans tous les paramètres de croissance mesurés. Des différences significatives (P < 0,05) ont été obtenues sur la valeur moyenne enregistrée pour le pilon, l'aile, le cou, la tête et le gésier parmi tous les paramètres de carcasse mesurés. Les valeurs les plus élevées (P < 0,05) pour le pilon ont été obtenues sur T2 (11,17) suivi de T1 et T4 (10,65 et 10,67) tandis que les valeurs les plus faibles ont été enregistrées pour T3 et T5 (9,54 et 10,10). La même tendance a été observée pour le gésier. Des différences significatives (P< 0,05) ont été obtenues dans la perte à la cuisson enregistrée sur le muscle de la poitrine et dans la perte au froid enregistrée sur le muscle de la cuisse et le pilon tout au long du traitement pour tous les paramètres mesurés pour les attributs de qualité de la viande. Les résultats de l'évaluation sensorielle ont révélé des similitudes dans les valeurs obtenues pour la couleur, l'apparence, la saveur, la texture, le goût et l'acceptation globale. En conclusion, l'inclusion d'acide citrique et acétique par voie orale pour les poulets de chair n'a eu aucun effet néfaste sur les performances de croissance mais a amélioré la qualité de la carcasse.
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