Influence of Levels of Dietary Protein and Supplementary Copper on the Performance of Growing Rabbits

Omole, T. A.

doi:10.1016/s0007-1935(17)33939-8

Cited by 14 publications

(10 citation statements)

References 4 publications

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“…Much more than immunization, Cu supplementation may be an effective means of counteracting poor growth, poor feed utilization and high incidence of parasitemia in rabbits exposed to trypanosome parasites. The fact that supplemental Cu will improve growth and rate of feed conversion in rabbits as borne out by this study has been properly documented (King 1975, Omole and Adegbola 1976, Omole, 1977.…”

Section: Discussionsupporting

confidence: 58%

“…Investigation with dietary minerals have revealed that supplemental Cu at levels up to 250 ppm in the diet of rabbits will not only promote rapid rate of growth and efficiency of feed utilization (King 1975, Omole 1977 but may also alter intestinal microflora. Studies relating to dietary manipulation for suppression of parasitemiasis in animals is limiting.…”

Section: Introductionmentioning

confidence: 99%

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Effect of copper on growth and serum constituents of immunized and non-immunized rabbits infected with Trypanosoma bracei

Omole

Onawunmi

1979

Ann. Parasitol. Hum. Comp.

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Résumé.Effet du Cuivre sur la croissance et les constituants sériques de lapins immunisés ou non puis infecté par T. brucei.Soixante-douze lapins originaires de Nouvelle-Zélande ont été répartis en 3 groupes. Pour deux d'entre eux le régime de base a été supplémenté respectivement par 125 et 250 ppm de Cu. Quatre semaines plus tard, ces deux derniers sous-groupes ont été subdivisés en 3 lots de 8 lapins, Le premier lot a été immunisé par Trypanosoma brucei, puis inoculé par le même parasite ; le second lot fut inoculé sans immunisation préalable ; le troisième ne fut ni immunisé, ni inoculé.Il a été d'abord confirmé que l'adjonction de Cu favorisait la croissance des animaux et le rendement de la nourriture ingérée. Il a été ensuite constaté que la parasitémie a des effets légèrement contraires, mais que les deux paramètres sont améliorés par l'adjonction de 125 ou 250 ppm de Cu à la diète. Si l'immunisation confère une légère protection contre la perte de poids des lapins parasités, celle-ci est complètement neutralisée par l'adjonction de 250 ppm de Cu, seule ou associée à l'immunisation.La parasitose entraîne encore une baisse de l'hématocrite, une diminution de l'hémoglo bine et du glucose sérique. En même temps, l'activité phosphatase alcaline s'élève. Avec lé régime supplémenté en Cu, ces effets sont inversés.Le cuivre a donc pour conséquence non seulement de favoriser la croissance des lapins, mais encore de neutraliser la trypanosomose à T. brucei sur le développement des animaux et sur certains paramètres sanguins.Accepté le 5 septembre 1979.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Effect of copper on growth and serum constituents of immunized and non-immunized rabbits infected with Trypanosoma bracei

Omole

Onawunmi

1979

Ann. Parasitol. Hum. Comp.

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“…This may be due to enhanced feed intake and better utilization of pelletted diets. The values were however much lower than those reported by Omole (1982), Aduku et al (1986) and Igwebuikc et al (1995) for growing rabbits.…”

Section: Performance Parameterscontrasting

confidence: 58%

Utilization of <i>Prosopis africana</i> pulp for rabbit feeding: 1.Effects on growth and economic performance

Adamu¹,

Igwebuike²,

Kwari³

et al. 2013

Glo Jnl Pure Appl Sci

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The study was conducted to determine the chemical composition of Prosopis africana pulp (PAP) and the effects of PAP on the performance of growing rabbits. The study also highlighted the economic benefits arising from the substitution of maize with PAP in rabbit diets. Thirty (30) rabbits (Dutch X New Zealand white), 5-6 weeks of age and of mixed sexes were used for the study. The rabbits were randomly allotted to five dietary treatments in groups of six, but caged individually. The PAP replaced maize weight for weight at levels of 0, 10, 20, 30 and 40% in diets 1 (control), 2, 3, 4 and 5 respectively. The formulated diets contained similar crude protein content of 18%. The parameters considered were feed intake, growth rate, feed conversion ratio, protein efficiency ratio and the economic performance. The chemical analysis revealed that PAP and maize were similar in nutrient composition and amino acid profile. Highest feed intake (47.36 g/rabbit/day) and total weight gain (1211.67 g/rabbit) were recorded in treatment 3 (20% PAP) which were significantly different (P< 0.05) from treatments 4 (30% PAP) and 5 (40% PAP), but similar (P> 0.05) to treatments I (control) and 2 (10% PAP). The slightly higher daily weight gain (10.3 6 g/rabbit/day), feed conversion ratio (6.83) and protein efficiency ratio (1.14) recorded in treatment 3 (20% PAP) were not significantly different (P>0.05) from those of the other treatments. Although feed cost per kg and feed cost per kg gain were better in treatments 4 and 5, better feed intake and daily gain were obtained in the other treatments. Therefore, diets containing 20% PAP (i.e. 50% maize replacement) could be fed to growing rabbits without compromising the growth performance of the rabbits.

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“…It is believed that the dietary crude protein requirement of growing rabbits is 16%, which comes from NRC (1977). Omole (1982) reported the appropriate crude protein level for meat rabbits was 18%-22%. Abdella (1988) indicated that body gain, protein digestibility, slaughter performance and economy benefits were the greatest when the dietary crude protein level was 16%.…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Crude Protein on Growth Performance, Nutrient Utilization, Immunity Index and Protease Activity in Weaner to 2 Month-old New Zealand Rabbits

Lei¹,

Li²,

Jiao³

2004

Asian Australas. J. Anim. Sci

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An experiment was conducted to determine the effects of different dietary crude protein (CP) levels on growth performance, nutrient utilization, small intestine protease activity and immunity index of weaner to 2 month-old New Zealand rabbits. Eighty weaner rabbits were allocated in individual cages to five treatments in which they were fed diets with CP at 14%, 16%, 18%, 20% and 22%, respectively. The growth performance and nutrient digestibility of rabbits increased firstly when dietary CP increased, then decreased. The average daily gain was the highest and feed conversion rate was the lowest when dietary CP reached 20%, namely 34.9 g/d and 2.74:1, respectively. Maximum CP digestibility was 72.1% in the 18% CP group, maximum crude fiber digestibility of 28.4% occurred in the 16% CP group and was significantly different from other treatments (p<0.01), apparent digestibility of Lys and Val followed the same trend as CP digestibility, and reached their maximum when dietary CP was 18%. Apparent digestibility of Cys, Tyr, Leu and Thr also had a similar trend to CP digestibility. Nitrogen retention (RN) increased with CP level (p>0.05), and was highest for 20% CP treatment (1.5 g/d). The effect of CP level on the rate of digestible nitrogen (DN) converted RN was small. The spleen index, thymus index, chymotrypsin and trypsin activities in small intestine were highest when dietary CP was 16%, which were 1.0, 2.8, 15.7 U/g and 125.7 U/g, respectively. There was no significant difference among treatments (p>0.05). According to the above results, the appropriate dietary CP level from weaner to 2 month-old meat rabbits was 18-20%.

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Influence of Levels of Dietary Protein and Supplementary Copper on the Performance of Growing Rabbits

Cited by 14 publications

References 4 publications

Effect of copper on growth and serum constituents of immunized and non-immunized rabbits infected with Trypanosoma bracei

Effect of copper on growth and serum constituents of immunized and non-immunized rabbits infected with Trypanosoma bracei

Utilization of <i>Prosopis africana</i> pulp for rabbit feeding: 1.Effects on growth and economic performance

Effects of Dietary Crude Protein on Growth Performance, Nutrient Utilization, Immunity Index and Protease Activity in Weaner to 2 Month-old New Zealand Rabbits

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