Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento
The objective of this study was to evaluate the performance, intake and digestibility of nutrients, ingestive behavior and carcass characteristics of dairy goats male kept in confinement. Twenty-four animals (12 not castrated and 12 castrated) were used, with a mean initial weight of 18.5 ± 3.8 k...
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Caprinocultura Carne caprina Castração Fibra efetiva Palma-forrageira Rendimento de carcaça CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PRODUCAO ANIMAL |
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Caprinocultura Carne caprina Castração Fibra efetiva Palma-forrageira Rendimento de carcaça CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PRODUCAO ANIMAL Lima, Victor Henneg Campelo de Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
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The objective of this study was to evaluate the performance, intake and
digestibility of nutrients, ingestive behavior and carcass characteristics of dairy goats male kept
in confinement. Twenty-four animals (12 not castrated and 12 castrated) were used, with a
mean initial weight of 18.5 ± 3.8 kg, fed for 70 days with forage palm-based diets receiving
sugarcane bagasse (PBCA) or elephant grass hay (PFCE) as fiber sources with diets formulated
to possess similar amounts of neutral detergent fiber (NDF). The experimental design was
completely randomized in a 2 x 2 factorial arrangement, with two sexual conditions, two fiber
sources and six replicates per treatment, totaling 24 plots.. There were no statistically
significant differences in dry matter intake (CDM), crude protein consumption (CCP) and NDF
consumption (CNDF), with averages of 567 and 670 g/ day, 78 and 88 g/ day, and 219 and 258
kg/ day for the PBCA and PFCE, respectively. However, higher intakes of non-fibrous
carbohydrates (CNFC) were observed in the animals that consumed the diet containing
elephantgrass hay (247 g/ day). The highest coefficients of digestibility for dry matter (DDM),
crude protein (DCP) and non-fibrous carbohydrate (DNFC) were found for PBCA treatment,
with averages of 66.12, 74.26 and 91.94%, respectively, when compared to 62.88, 70.95 and
83.07%, respectively, for the PFCE. The digestibility of NDF did not vary according to the
treatments. There were interaction effects for the consumption of total digestible nutrients
(TDN), with higher results for the not castrated animals that consumed the PFCE diet (471 g/
day). Regarding performance, no differences were detected for the analyzed variables, with
mean values for final weight (FW) of 22.40 and 22.95 kg, mean daily gain (MDG) 55 and 71 g/
day, total gain TG) 3.89 and 4.92 kg and feed conversion (FC) of 11.59 and 10.02 for the
PBCA and PFCE treatments, respectively. In relation to the ingestive behavior, there was
difference for the idle times, rumination and total chewing time, with mean times of 1812.20
and 1539.00 minutes, 865.62 and 1100.58 minutes, 202.17 and 240.43 minutes, respectively for
PBCA and PFCE, but there was no effect for feed and rumination efficiencies evaluated.
Regarding the carcass characteristics, statistical differences were observed for carcass weight
hot (WCH) and cold carcass weight (CCW), with averages of 9.87 and 10.79 kg, 9.69 and
10.52 kg, for PBCA and PFCE, respectively, and for the carcass yields hot (CYH), commercial
yield (CY) and biological yield (BY), with averages of 43.81 and 46.87%, 42.90 and 45.73%,
and 55.32 and 59.76% for PBCA and PFCE, respectively. The final weight (FW), empty body
weight (EBW), pH and carcass temperature were not statistically diferente. There was an effect
of the sexual condition for WCH and CCW, with averages of 10.80 and 9.86 kg and 10.56 and
9.64 kg, respectively, for not castrates and castrates, respectively, as well as significant interaction between the sources of variation, with higher values of the not castrated animals o
of the PFCE treatment, with averages of 11.76 and 11.48 kg for WCH and CCW, respectively.
In relation to the meat cuts, diet had an influence on the weight of the leg (1,526 and 1,679 kg,
for the treatments PBCA and PFCE, respectively), as well as effect of the sexual condition on
the weights of neck and ribs, with averages of 654 and 500 g and 900 g and 752 g for not
castrated and castrated animals, respectively, as well as weigth neck yield for not castrated
animals (11.91%). Morphometric measures were influenced by diet, with a mean for the
carcass compactness index being 0.160 and 0.173, respectively for PBCA and PFCE
treatments, with significant interaction and larger measurements for not castrated animals that
consumed the hay-based diet of Elephant grass (0.18). The weights and yields of the “buchada”
and “panelada” were not altered. It is recommended, as an alternative for the confinement of
dairy goats, the use of elephantgrass hay associated with forage palm, without applying the
practice of castration. |
| author2 |
Urbano, Stela Antas |
| author_facet |
Urbano, Stela Antas Lima, Victor Henneg Campelo de |
| format |
masterThesis |
| author |
Lima, Victor Henneg Campelo de |
| author_sort |
Lima, Victor Henneg Campelo de |
| title |
Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| title_short |
Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| title_full |
Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| title_fullStr |
Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| title_full_unstemmed |
Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| title_sort |
bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento |
| publisher |
Brasil |
| publishDate |
2019 |
| url |
https://repositorio.ufrn.br/jspui/handle/123456789/27169 |
| work_keys_str_mv |
AT limavictorhennegcampelode bagacodecanadeacucarefenodecapimelefanteemdietasparacaprinoscastradosenaocastradosterminadosemconfinamento AT limavictorhennegcampelode sugarbagasseandelephantgrasshayindietsforgostscastratedandnotcastratedfinishedinconfinement |
| _version_ |
1773967049018572800 |
| spelling |
ri-123456789-271692019-06-09T05:26:26Z Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento Sugar bagasse and elephant grass hay in diets for gosts castrated and not castrated finished in confinement Lima, Victor Henneg Campelo de Urbano, Stela Antas Novaes, Luciano Patto Ferreira, Marcelo de Andrade Caprinocultura Carne caprina Castração Fibra efetiva Palma-forrageira Rendimento de carcaça CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PRODUCAO ANIMAL The objective of this study was to evaluate the performance, intake and digestibility of nutrients, ingestive behavior and carcass characteristics of dairy goats male kept in confinement. Twenty-four animals (12 not castrated and 12 castrated) were used, with a mean initial weight of 18.5 ± 3.8 kg, fed for 70 days with forage palm-based diets receiving sugarcane bagasse (PBCA) or elephant grass hay (PFCE) as fiber sources with diets formulated to possess similar amounts of neutral detergent fiber (NDF). The experimental design was completely randomized in a 2 x 2 factorial arrangement, with two sexual conditions, two fiber sources and six replicates per treatment, totaling 24 plots.. There were no statistically significant differences in dry matter intake (CDM), crude protein consumption (CCP) and NDF consumption (CNDF), with averages of 567 and 670 g/ day, 78 and 88 g/ day, and 219 and 258 kg/ day for the PBCA and PFCE, respectively. However, higher intakes of non-fibrous carbohydrates (CNFC) were observed in the animals that consumed the diet containing elephantgrass hay (247 g/ day). The highest coefficients of digestibility for dry matter (DDM), crude protein (DCP) and non-fibrous carbohydrate (DNFC) were found for PBCA treatment, with averages of 66.12, 74.26 and 91.94%, respectively, when compared to 62.88, 70.95 and 83.07%, respectively, for the PFCE. The digestibility of NDF did not vary according to the treatments. There were interaction effects for the consumption of total digestible nutrients (TDN), with higher results for the not castrated animals that consumed the PFCE diet (471 g/ day). Regarding performance, no differences were detected for the analyzed variables, with mean values for final weight (FW) of 22.40 and 22.95 kg, mean daily gain (MDG) 55 and 71 g/ day, total gain TG) 3.89 and 4.92 kg and feed conversion (FC) of 11.59 and 10.02 for the PBCA and PFCE treatments, respectively. In relation to the ingestive behavior, there was difference for the idle times, rumination and total chewing time, with mean times of 1812.20 and 1539.00 minutes, 865.62 and 1100.58 minutes, 202.17 and 240.43 minutes, respectively for PBCA and PFCE, but there was no effect for feed and rumination efficiencies evaluated. Regarding the carcass characteristics, statistical differences were observed for carcass weight hot (WCH) and cold carcass weight (CCW), with averages of 9.87 and 10.79 kg, 9.69 and 10.52 kg, for PBCA and PFCE, respectively, and for the carcass yields hot (CYH), commercial yield (CY) and biological yield (BY), with averages of 43.81 and 46.87%, 42.90 and 45.73%, and 55.32 and 59.76% for PBCA and PFCE, respectively. The final weight (FW), empty body weight (EBW), pH and carcass temperature were not statistically diferente. There was an effect of the sexual condition for WCH and CCW, with averages of 10.80 and 9.86 kg and 10.56 and 9.64 kg, respectively, for not castrates and castrates, respectively, as well as significant interaction between the sources of variation, with higher values of the not castrated animals o of the PFCE treatment, with averages of 11.76 and 11.48 kg for WCH and CCW, respectively. In relation to the meat cuts, diet had an influence on the weight of the leg (1,526 and 1,679 kg, for the treatments PBCA and PFCE, respectively), as well as effect of the sexual condition on the weights of neck and ribs, with averages of 654 and 500 g and 900 g and 752 g for not castrated and castrated animals, respectively, as well as weigth neck yield for not castrated animals (11.91%). Morphometric measures were influenced by diet, with a mean for the carcass compactness index being 0.160 and 0.173, respectively for PBCA and PFCE treatments, with significant interaction and larger measurements for not castrated animals that consumed the hay-based diet of Elephant grass (0.18). The weights and yields of the “buchada” and “panelada” were not altered. It is recommended, as an alternative for the confinement of dairy goats, the use of elephantgrass hay associated with forage palm, without applying the practice of castration. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Objetivou-se avaliar o desempenho, consumo e digestibilidade dos nutrientes, comportamento ingestivo e as características de carcaça de cabritos castrados e não castrados mantidos em confinamento. Foram utilizados 24 animais (12 castrados e 12 não castrados), com peso inicial médio de 18,5 ± 3,8 kg, alimentados durante 70 dias com dietas 60:40 (volumoso : concentrado) contendo palma forrageira e bagaço de cana-de-açúcar (PBCA) ou feno de capim-elefante (PFCE) como porção volumosa, formuladas para possuírem quantidades semelhantes de fibra em detergente neutro (FDN). O delineamento experimental utilizado foi o inteiramente casualizado, em arranjo fatorial 2 x 2, com duas condições sexuais, duas fontes de fibra e seis repetições por tratamento, totalizando 24 parcelas. Não houve diferença estatística para os consumos de matéria seca (CMS), consumo de proteína bruta (CPB) e consumo de FDN (CFDN) avaliados, com médias de 567 e 670 g/dia, 78 e 88 g/dia e 219 e 258 g/dia, para o PBCA e PFCE, respectivamente. Foram constatados maiores consumos de carboidratos não-fibrosos (CCNF) pelos animais que consumiram a dieta contendo feno de capim-elefante (247 g/dia). Maiores coeficientes de digestibilidade para matéria seca (DMS), proteína bruta (DPB) e carboidrato não-fibrosos (DCNF), foram constatados para o tratamento PBCA, com médias de 66,12, 74,26 e 91,94%, respectivamente, quando comparada a 62,88, 70,95 e 83,07%, respectivamente, para o PFCE. A digestibilidade da FDN não variou de acordo com os tratamentos. Houve efeito da interação para o consumo de nutrientes digestíveis totais (NDT), com maiores resultados para os animais inteiros que consumiram a dieta PFCE (471 g/dia). Não foram detectadas diferenças para as variáveis analisadas, com médias para peso final (PF) de 22,40 e 22,95 kg, ganho médio diário (GMD) 55 e 71 g/dia, ganho total (GT) 3,89 e 4,92 kg e conversão alimentar (CA) de 11,59 e 10,02, para os tratamentos PBCA e PFCE, respectivamente. Em relação ao comportamento ingestivo, houve diferença para os tempos de ócio (TOC), ruminação (TRU) e tempo de mastigação total (TMT), com tempos médios de 1812,20 e 1539,00 minutos, 865,62 e 1100,58 minutos, 202,17 e 240,43 minutos, respectivamente para PBCA e PFCE, mas não houve efeito para as eficiências de alimentação e ruminação avaliadas. No tocante as características de carcaça, foram observadas diferenças estatísticas para peso da carcaça quente (PCQ) e peso da carcaça fria (PCF), com médias de 9,87 e 10,79 kg, 9,69 e 10,52 kg, para PBCA e PFCE, respectivamente, e para os rendimentos da carcaça quente (RCQ), rendimento comercial (RC) e rendimento biológico (RB), com médias de 43,81 e 46,87%, 42,90 e 45,73%, e 55,32 e 59,76% para PBCA e PFCE, respectivamente. O peso corpóreo vazio (PCV), pH e temperatura da carcaça não se mostraram diferentes estatisticamente. Verificou-se efeito da condição sexual para o PCQ e PCF, com médias de 10,80 e 9,86 kg e 10,56 e 9,64 kg, para inteiros e castrados, respectivamente, bem como interação significativa entre as fontes de variação, com maiores valores para os animais inteiros do tratamento PFCE, com médias de 11,76 e 11,48 kg para o PCQ e PCF, respectivamente. Em relação aos cortes cárneos, houve influência da dieta sobre o peso do pernil (1,526 e 1,679 kg, para os tratamentos PBCA e PFCE, respectivamente), bem como efeito da condição sexual sobre os pesos de pescoço e costelas, com médias de 654 e 500 g e 900 e 752 g, para inteiros e castrados, respectivamente, assim como maior rendimento do pescoço para os animais inteiros (11,91%). As medidas morfométricas foram influenciadas pela dieta, com média para o índice de compacidade da carcaça sendo 0,160 e 0,173, para os tratamentos PBCA e PFCE, respectivamente, com interação significativa e maiores medidas para os animais inteiros que consumiram a dieta a base de feno de capim-elefante (0,18). Os pesos e rendimentos da buchada e panelada não foram alterados. Recomenda-se, como alternativa para o confinamento de caprinos, o uso do feno de capim-elefante associado à palma forrageira, sem aplicar a prática da castração. 2019-06-06T22:32:05Z 2019-06-06T22:32:05Z 2019-04-05 masterThesis LIMA, Victor Henneg Campelo de. Bagaço de cana-de-açúcar e feno de capim-elefante em dietas para caprinos castrados e não castrados terminados em confinamento. 2019. 85f. Dissertação (Mestrado em Produção Animal) - Escola Agrícola de Jundiaí, Universidade Federal do Rio Grande do Norte, Natal, 2019. https://repositorio.ufrn.br/jspui/handle/123456789/27169 pt_BR Acesso Aberto application/pdf Brasil UFRN PROGRAMA DE PÓS-GRADUAÇÃO EM PRODUÇÃO ANIMAL |