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Previous issue date: 2006-02-17 / Two experiments were carried out aiming to evaluate the effect of cotton seed meal on the growth of rabbits. Eight rabbits 50 days of age (four males and four females) were utilized in the digestibility trial. The experimental period lasted for 12 days (8 days for adaptation and 4 days of whole faeces collection). Cotton seed meal was offered as single feed, with 0.5% of NaCl end 0.4% of mineral vitamin mixture. The cotton seed meal was then moisted with 40% of water until past was got. The food excess was taken off the feeder daily. The chemical composition of the cotton seed meal for dry matter, crude protein, neutral fiber detergent, acid fiber detergent, crude fiber, calcium, phosphorus, extract ether and gross energy were respectively : 89.57; 38.18; 33.55; 22.93; 13.82; 0.34; 1.26; 0.75% and 4,169.62 kcal/kg. The apparent digestibility coefficients were: 66.81; 84.65; 41.14; 39.00 and 68.27% for dry matter, crude protein, neutral fiber detergent, acid fiber detergent and gross energy, respectively. In the performance trial were utilized 32 rabbits (16 males and 16 females) White New Zealand 41 days of age kept in individual cages. Data were analyzed under a randomized design with replication and three treatments (three levels of soybean meal for cotton seed meal crude protein substitution: (0; 33; 66 and 100%). During performance trial (from 62 nd to 67 th day whole faeces collection was made to establish the diet digestibility. At the end of the experiment the rabbits (76 days old) were slaughter to determine carcass quality. The digestibility coefficient of dry matter, organic matter, crude protein, neutral fiber detergent, acid fiber detergent and gross energy of the diets were affected (P<0.05) by treatments. There was significant effect (P<0,05) for daily feed intake and feed: gain ratio, while there was no significant effect of treatments on the live weight gain average and the carcass quality. The results show that crude protein of cotton seed meal may replace the crude protein of soybean meal in feeding of growing rabbits. It?s advisable to study economic evaluation. / Foram conduzidos dois experimentos com o objetivo de avaliar o uso do farelo de algod?o na alimenta??o de coelhos em crescimento. No ensaio de digestibilidade, foram utilizados oito coelhos de ambos os sexos, com 50 dias de idade. O per?odo experimental constou de oito dias de adapta??o ?s condi??es experimentais e quatro dias de coleta total de fezes. O farelo de algod?o foi fornecido como ?nico alimento, adicionando-se 0,5% de cloreto de s?dio e 0,4% de mistura mineral vitam?nico, sendo em seguida umedecido com 40% de ?gua formando uma pasta. Para evitar fermenta??es, diariamente retiravam-se as sobras de ra??o. A composi??o qu?mica do farelo de algod?o para mat?ria seca, prote?na bruta, fibra em detergente neutro, fibra em detergente ?cido, fibra bruta, c?lcio, f?sforo, extrato et?reo e energia bruta, foram respectivamente de, 89,57; 38,18; 33,55; 22,93; 13,82; 0,34; 1,26; 0,75% e 4169,62 Kcal/kg. Os coeficientes de digestibilidade aparente foram de 66,81; 84,65; 41,14; 39,00 e 68,27% para mat?ria seca, prote?na bruta, fibra em detergente neutro, fibra em detergente ?cido e energia bruta, respectivamente. Os valores de mat?ria seca digest?vel, prote?na digest?vel, fibra em detergente neutro digest?vel, fibra em detergente ?cido digest?vel e energia digest?vel, com base na mat?ria natural, foram, respectivamente de: 59,84; 32,32; 13,80; 8,94% e 2846,60 Kcal ED/kg. No ensaio de desempenho foram utilizados 32 coelhos de ambos os sexos (16 machos e 16 f?meas) da ra?a Nova Zel?ndia branca com 41 dias de idade alojados individualmente e distribu?dos em delineamento inteiramente casualizado em quatro tratamentos (tr?s n?veis de substitui??o da prote?na bruta do farelo de soja: 33; 66 e 100%) e oito repeti??es. Durante o experimento de desempenho, dos 62 aos 67 dias, procedeu-se a coleta total de fezes. Ao final do experimento (76 dias) os animais foram abatidos para avalia??o de carca?a. Os coeficientes de digestibilidade da mat?ria seca, mat?ria org?nica, prote?na bruta, fibra em detergente neutro, fibra em detergente ?cido e energia bruta das dietas experimentais foram afetados (P<0,05) pelos tratamentos. Observou-se aumento (P<0,05) no consumo di?rio de ra??o e na convers?o alimentar, por?m o ganho de peso m?dio e as caracter?sticas de carca?a n?o foram afetados, sugerindo que a prote?na do farelo de algod?o (38 % PB) pode substituir totalmente a prote?na do farelo de soja, ficando seu uso na depend?ncia da oferta e pre?o de mercado.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:tede/562 |
| Date | 17 February 2006 |
| Creators | D?vila, Nicolas Fernando P?rraga |
| Contributors | Gomes, Augusto Vidal da Costa |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Curso de P?s-Gradua??o em Zootecnia, UFRRJ, Brasil, Produ??o Animal |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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