Agro-industrial by-product use in diets of ovinos of cut: consumption, digestibilidade, performance and characteristics of carcass

• Main Author: Rossana Herculano Clementino
• Other Authors: Josà Neuman Miranda Neiva
• Format: Others
• Language: Portuguese
• Published: Universidade Federal do Cearà 2008
• Subjects: Banana; Cortes regionais; ComposiÃÃo tecidual; Ganho em peso; Manga; Sensorial da carne; Urucum; Regional cuts; Tissue composition; Weight gain; mango; Sensorial of the meat; Annato.; ZOOTECNIA
• Online Access: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4706

CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior === Foram realizados cinco experimentos objetivando determinar o consumo e digestibilidade, desempenho e caracterÃsticas quantitativas da carcaÃa de ovinos alimentados com dietas contendo subprodutos, com base na matÃria natural, (SPU), da banana (Musa sp.) desidratada (SPB), da manga (Mangifera indica) desidratada (SPM) e do urucum (Bixa orellana L.). No primeiro, segundo e terceiro experimentos foram avaliados os teores de matÃria seca (MS), matÃria orgÃnica (MO), proteÃna bruta (PB), fibra em detergente neutro (FDN), fibra em detergente Ãcido (FDA), hemicelulose (HCEL), lignina (LIG), nitrogÃnio insolÃvel em detergente neutro (NIDN), nitrogÃnio insolÃvel em detergente Ãcido (NIDA), carboidratos totais (CT), carboidratos nÃo fibrosos (CNF), os nutrientes digestÃveis totais (NDT) e fator de efetividade fÃsica da FDN. Ainda foram avaliados o consumo voluntÃrio, digestibilidade aparente da MS, PB, FDN, FDA, CHOT, CNF, NDT e balanÃo de nitrogÃnio (BN). No quarto e quinto experimentos foram avaliados os consumos de nutrientes em g/dia, % PV e g/kg0,75, ganho em peso e conversÃo alimentar. Como tambÃm foram avaliadas caracterÃsticas quantitativas da carcaÃa e anÃlise sensorial de dietas com adiÃÃo de 20% do SPB, com 30% do SPM e 40% do SPU. No primeiro experimento, a adiÃÃo do subproduto de banana (SPB) nÃo influenciou (P>0,05) o consumo de matÃria seca (MS) e matÃria orgÃnica (MO) quando expressos nas diferentes formas, obtendo-se valores mÃdios de 677,3 e 605,81 em g/dia, respectivamente. A adiÃÃo do SPB promoveu um aumento significativo (P<0,05) no CPB e CEE de 34,3 a 46,5 e de 10,63 a 59,9 g/dia e reduÃÃo de 3,07 unidades percentuais para o consumo de FDN. Com relaÃÃo aos coeficientes de digestibilidade da MS, PB, MO, EE, FDA e CHOT observou-se efeito negativo, excetuando, o CDFDN que nÃo foi influenciado (P>0,05) com adiÃÃo do SPB em substituiÃÃo ao feno. No segundo experimento, os consumos em g/dia de MS, MO, PB, EE, FDN e FDA apresentaram resposta quadrÃtica estimando-se consumos mÃximos de matÃria seca e matÃria orgÃnica de 36,11 e 37,8%, respectivamente, com a adiÃÃo do SPM. Contudo, nÃo houve diferenÃa (P>0,05) para a digestibilidade aparente dos nutrientes. Entretanto, a digestibilidade aparente da proteÃna bruta (CDPB) e o balanÃo de nitrogÃnio apresentaram comportamento quadrÃtico. No terceiro experimento, houve aumento nos consumos e dos nutrientes com adiÃÃo do subproduto do urucum (SPU), excetuando-se o consumo de EE que nÃo houve efeito (P>0,05). O comportamento linear positivo foi verificado para os coeficientes de digestibilidade (CD) da MS, MO e PB, jà para os CDEE, CDFDN, CDFDA e CDCHOT nÃo houve efeito (P>0,05) significativo. A adiÃÃo do SPU promoveu um balanÃo de N positivo. No quarto experimento, nÃo foram observadas diferenÃas significativas (P>0,05) entre os tratamentos para os consumos de matÃria seca em g/animal/dia. PorÃm, observou-se aumento para os consumos em %PV e g/kg0,75, para a dieta com adiÃÃo do SPU. Em relaÃÃo aos consumos de PB o SPB e SPM, apresentaram superioridade em relaÃÃo aos ovinos que receberam a dieta SPU. Para os CFDN nÃo foram observadas diferenÃas (P>0,05) entre as dietas nas diversas formas que foram expressas. O mesmo comportamento foi verificado com relaÃÃo ao ganho em peso, pesos de carcaÃa quente e fria e os respectivos rendimentos de carcaÃa quente e fria. Observaram-se valores mÃdios de RCQ e RCF respectivos de 46,05; 46,38; 46,54; 48,39% e 42,27; 45,67; 45,79; 47,72% para as dietas padrÃo (DP), SPB, SPM e SPU. Com relaÃÃo aos cortes comercias, houve efeito significativo (P<0,05) apenas para o lombo anterior em kg e para a paleta em % do PCF. Para a Ãrea de olho de lombo foram registrados valores respectivos de 8,28; 9,61; 1,38 e 10,82 para as dietas DP; SPB; SPM e SPU. No quinto experimento, relativo à dissecaÃÃo da perna dos ovinos, nÃo foi verificado efeito significativo (P>0,05) para a relaÃÃo M/O; M/G e para o Ãndice de musculosidade da perna (IM). Obtiveram-se valores para o IM de 0,79; 0,73; 0,81 e 0,82, respectivamente, para a DP; SPB; SPM e SPU. No sexto experimento, os atributos sensoriais da carne de ovinos apresentaram superioridade para o grau de dureza da carne dos ovinos alimentados com SPM e SPU. Menores suculÃncia e sabor ovino foram verificados, respectivamente, nas dietas SPM e SPB === Five experiments was conducted with the objective of evaluating the consume and digestibility, performance and quantitative characteristics of the lambs carcass fed with diets containing by - products, with base in the natural matter of the banana ( Musa sp .), ( BBP) , of the mango ( Mangifera ind ica ) ( MBP) , of the annato ( Bixa orellana ) ( ABP) . i n the first, second and third experiments were determination of dry matter ( DM), organic matter (OM), crude protein (CP), neutral detergent fiber ( NDF ), acid detergent fiber (ADF), hemicellulose (HCEL), lig nin (LIG), neutral detergent insoluble nitrogen (NIDN), acid detergent insoluble nitrogen (ADIN) , total carbohydrates (TC) , non - fibrous carbohydrates (NFC), total digestible nutrients (TDN) , and factor of physical effectiveness of FND. They were still eval uated the voluntary intake and coefficients of digestibility of DM, CP, NDF, ADF, CHOT, TDN, and nitrogen balance (NB). In the fourth and fifth experiments were evaluated the nutrients intake in g/day , % BW and g/kg 0,75 daily gain and alimentary conversion . As well as they were evaluated quantitative characteristic of the carcass and sensorial analysis of diets with addition 20% of BBP with 30% of MBP and 40% of ABP . In the first experiment the addition of the banana's by - product (BBP) it didn't influence ( P>0.05) the dry matter intake (DMI), and organic matter (OMI ) intake when expressed in the different forms with values of 677.3 and 605. 81 in g/day , respectively observed . The (BBP) addition increased (P <0. 05) in crude protein intake (CPI) and ether extrac t (EEI) intak e from 34.3 to 46.5 and from 10. 63 to 59 . 9 g/day and reduction of 3 . 07 percentage units for the NDF intake. Regarding the of digestibility coefficients of DM, CP DO, EE, ADF and TC was observed negative effect (P<0. 05) , excepting, CDNDF that i t was not influenced (P>0.05) with addition of BBP . In second experiment the day of DM, DO, CP, EE, NDF, ADF intakes g/day presented quadratic answer being considered maximum dry matter and organic matter intake 36. 11 and 37. 8% , re spectively of addition of mango by - product (MBP). However there was not difference (P >0.05) for the apparent digestibility of the nutrients, except the apparent digestibility of the crude protein (DCCP) the addition of (MBP) quadratic behavior observed. In third experiment annatto by product (ABP) addition increased (P <0.05) in nutrients intake , excepted the EE intake was not effect significant (P>0. 05) the addition anatto by product (ABP ) with values in the 11.5 and 0. 05 g/day e % BW . The linear ly behavior was verified for the di gestibility coefficients (DC) of DM , DO and CP, already for CDEE, CNDF, CDANF XIX and CDCHOT didn't have effect (P>0. 05). The anatto by - product (ABP ) addition promoted a positive balance of N . In the fourth experiment significant differences were not observed (P>0.05) among the treatments for the dry matter intake in g/ day . However, increase was observed for the % PV and g/kg 0.75 intake for the diet with addition of annato by - product, banana by - product and mango by product . The intake of CP by - product of mango and banana &#769;s by - product (BBP) presented superiority in relation to the lambs that received the other diets. For the EE intake BBP it was observed higher values the other diets and NDF intake it was not observed differences (P>0.05) among the diets in the s everal forms that were expressed . The same behavior was verified regarding the weight gain , hot carcass weight (HCW) and cold carcass (CC W ) and the respective yield of hot and cold carcass. The values of hot carcass yield and cold carcass (CC) were 46.05; 46.38; 46.54; 48. 39% and 42 . 27; 45.67; 45.79; 47. 72% for the diets (PD), BBP, MBP a nd ABP respectively . In respect to the cuts trade there was effect significant (P <0 . 05) just for the anterior loin in kg and for the shoulder % WCC . For loin eye area (LEA ) were registered respective values of 8.28; 9.61; 1. 38 ; 10. 82 for the diets PD; BBP; MBP; ABP. In the fifth experiment with the dissection of the leg of the lambs significant effect was not verified (P>0 . 05) for the accounting M/O; M/G and for the index of muscularity of the leg (MI ) that obtained values of 0.79; 0.73; 0.81; 0. 82 for PD; BBP; MBP; MBP in the sixth experiment the attributes sensorial of the lambs meat presented superiority for the degree of hardness of the meat of the lambs fed with MBP and MBP. To smallest succulency and the smallest flavor lambs they were verified in the diets MBP and BBP respectively.