Asian Journal of Research in Animal and Veterinary Sciences
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Effect of Concentrate to Fresh Gmelina arborea Leaf Combinations on Haematological and Serum Biochemical Parameters of Rabbit Bucks
No full textThis study aimed to investigate the effects of concentrate on fresh Gmelina arborea leaf (FGAL) combinations on haematological and serum biochemical parameters of rabbit bucks. Twenty four (24) rabbit bucks of mixed breeds (New Zealand white x Chinchilla) with the average live weight of 852 g, aged between 12 and 14 weeks were subjected to a feeding trial for 14 weeks. The rabbits were randomly allocated into four treatments (each treatment contained 6 rabbits): Treatment 1 (100% concentrate: 0% FGAL), Treatment 2 (75% concentrate: 25% FGAL), Treatment 3 (50% concentrate: 50% FGAL), Treatment 4 (25% concentrate: 75% FGAL). The results obtained in this study showed that packed cell volume (PCV), white blood cell (WBC), haemoglobin (Hb), mean corpuscular haemoglobin concentration (MCHC) and white blood cell differentials were not significantly affected by the dietary treatments. Red blood cell (RBC), mean corpuscular volume (MCV) and mean concentration haemoglobin (MCH) differed significantly (P<0.05) among treatments. Serum globulin, urea, creatinine and cholesterol were significantly (P<0.05) influenced by the dietary treatments, while total protein, albumin and glucose were not affected. The results revealed that fresh Gmelina arborea leaf in combination with concentrate had no adverse effects on haematological and serum biochemical parameters of rabbit bucks
Evaluation of Substituting Toasted Daniellia oliveri Seed Meal for Soybean Meal on the Performance and Economics of Production of Broiler Chickens
No full textThis study is aimed to evaluate the growth performance, nutrient retention, dressed and organ weights and economics of production using toasted Daniellia oliveri seed meal (TDSM) as a source of protein substitute with soybean meal (SBM) in broiler diets for 56 days. One hundred and fifty (150), one-day-old unsex Arbor Acre broiler chicks were randomly distributed into five treatments with 30 chicks each, replicated three times (10 chicks each) in a completely randomized design. Daniellia oliveri seed meal protein replaced soybean meal (SBM) at 0, 5, 10, 15 and 20%. Replacing SBM with TDSM protein up to 20% did not affect (P>0.05) growth, feed intake and feed conversion ratio (FCR). The substitution shows reduction in cost of feed intake per bird and percentage saving cost per bird of 13.55, 18.26, 31.77 and 33.2 at dietary 5, 10, 15 and 20% TDSM levels of inclusion. The nutrient digestibility dressed weight, gizzard, abdominal fat, liver, heart and pancreas were not affected (P > 0.05) by incorporating TDSM up to 20% in broiler diets. The results suggest that 20% inclusion level of toasted Daniellia oliveri seed meal could be effectively used without adverse effects on growth performance, nutrient digestibility, dressed and organ weights and with high production saving cost
Effects of Feeding Different Protein Diets in Growth Performance and Carcass Quality of Snails (Archachatina marginata)
No full textThe study examined the effects of feeding different protein diets on growth performance and carcass quality of Snail, Archachatina marginata at the snail unit, Department of Animal Science, Faculty of Agriculture and Natural Resources Management Enugu State University of Science and Technology. Sixty clinically healthy snails were allotted to four treatment diets designated as T1 the control, contained all the ingredients, T2 contained only soybean meal, T3 only groundnut cake and T4 only fishmeal as the main protein source. Each treatment was replicated thrice in a Completely Randomized Design. Data were collected on weight gain feed intake using digital electronic weighing scale (Atonic electronic scale), shell length and shell width were measured using venire calliper while carcass characteristics were done using an Atomic electronic scale. Data collected were subjected to one-way analysis of variance using SPSS version 20 (2012). Findings revealed … statistical differences (P<0.05) were found in weight gain, shell characteristics as well as carcass characteristics. The result also showed that protein rich in calcium sources are ideal for snail production as the edible portion, visceral weight and shell weight showed statistical differences (P<0.05) from T3 (85 g, 55.38 g, 41g) to T4 (80.6 g, 45.32 g, 44 g) then T2 (75 g, 42.08 g, 37 g) and T1 (71 g, 40.37 g, 34 g) in that order
The Regulation of Interspecific Variations of Shell Shape in Bivalves: An Illustration with the Common “Clams” Fauna along French Coasts
No full textI report an unexpected negative covariance occurring between two major parameters governing shell growth in marine bivalves, especially within the order Veneroida. This relationship is highlighted, here, considering a set of forty, rather common species of clams collected from French coasts. Interestingly, this negative covariance has two (geometrically related) consequences on the pattern of variation of shell shape at the inter-specific level:
(i) An extended range of variation of shell elongation ‘E’ is made compatible with.
(ii) A severely restricted range of variation of the ventral convexity ‘K’ of the shell contour.
I suggest that:
(i) The extended range of interspecific variation of the shell elongation ‘E’ results from a trend towards larger differentiation between species according to this functionally important parameter E, while, in contrast,
(ii) The strongly restricted range of variation of the ventral convexity ‘K’ of the shell contour might arguably result from a common need for improved shell resistance, face to mechanical solicitations from the environment, either biotic or abiotic.
Accordingly, the negative covariance reported between these two growth parameters is understood as the indirect consequence of the selective pressures applying primarily upon the functionally-relevant shell shape parameters E and K