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Growth and carcass attributes of growing Creole kids according to experimental infection level and type of diet

Abstract : In the tropics one of the major constraints to goat production is infection by gastrointestinal nematodes (GIN). One promising alternative to chemotherapy is the improvement of host nutrition. The aim of this study was to assess the effects of infection and supplementation on packed cell volume (PCV), average daily gain (ADG) and carcass quality in growing Creole kids. Sixty male goats were reared indoors following a 2 × 3 factorial design: two experimental infection levels, (infected (I) and non-infected (NI)) and three diets D (G, kids were fed exclusively with tropical forages; B, kids were supplemented with dried and crushed banana and C, kids were supplemented with commercial pellets). Faecal egg counts did not vary among I groups (on average 2,200 ω/g). The PCV and ADG were improved (P < 0.001) for NI vs. I animals. There was a D effect (P < 0.001) and no I × D interaction was observed. There was no significant effect of GIN on the main carcass data, except the weights of liver, white offal and abdominal fat, which increased slightly in I compared with NI goats (P < 0.05). All carcass data increased significantly with the addition of supplement in the diet (P < 0.001), except for carcass-cut proportions. Meat physical parameters were degraded when I kids received low N diets (B or G) with higher lightness and water loss than in the C groups. Given that GIN affect the animal’s N metabolism it is recommended to avoid the use of unbalanced diet such as those banana-based. Further research is necessary to assess the nutrition × parasitism interactions on physiological features and carcass quality of Creole goats.
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Submitted on : Thursday, February 23, 2017 - 3:30:03 PM
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Willy Cei, Abel Hiol, Jacky Gobardhan, Nepos Angebert, Yoan Félicité, et al.. Growth and carcass attributes of growing Creole kids according to experimental infection level and type of diet. Tropical Animal Health and Production, Springer Verlag (Germany), 2015, 47 (5), pp.953-960. ⟨10.1007/s11250-015-0814-7⟩. ⟨hal-01475258⟩



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