Estratégia alimentar para dieta baseada em palma forrageira sobre o desempenho e digestibilidade em vacas em final de lactação

Silva, Aldrin Ederson Vila Nova; Guim, Adriana; Ferreira, Marcelo de Andrade; Lima, Luiz Evandro de; Pessoa, Ricardo Alexandre Silva; Sosa, Maria Yolanda

doi:10.4025/actascianimsci.v27i2.1233

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…Para estimativa dos CT, foi utilizada equação proposta por Sniffen et al (1992), CT = 100 -(%PB + %EE + %cinzas) e, para estimativa dos CNF, adotou-se a equação descrita por Hall (2001), em que CNF = 100% -(PB% + FDN% -FDNpb + EE% + Cinzas%) e FDNpb é a proteína bruta insolúvel em detergente neutro. Os nutrientes digestíveis totais (NDT) foram calculados pela equação: NDT = PBd + CTd + 2,25 (EEd), de acordo com Sniffen et al (1992).…”

Section: Introductionunclassified

Substituição total do milho e parcial do feno de capim-tifton por palma forrageira em dietas para vacas em lactação: consumo e digestibilidade

et al. 2007

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RESUMO -Para avaliação do consumo e da digestibilidade aparente dos nutrientes de dietas contendo diferentes níveis (0; 12,0; 25,0; 38,0 e 51,0%) de palma forrageira ( Opuntia ficus indica Mill) em substituição total ao milho ( Zea mays L.) e parcial ao feno de capim-tifton ( Cynodon spp), foram utilizadas cinco vacas da raça Holandesa, distribuídas em quadrado latino 5 × 5. No início do experimento, os animais apresentavam 583 ± 7,07 kg de peso corporal (PC) e período de lactação em torno de 110 dias. Cada período experimental teve duração de 17 dias, dez dias para adaptação dos animais à dieta e sete dias para coleta de dados. O consumo de MS (kg/dia, %PC e g/kg 0,75 ) e os consumos de MO, EE, PB, carboidratos totais (CT), FDN, FDA e NDT (kg/dia) diminuíram linearmente conforme aumentaram os níveis de palma forrageira na dieta. O consumo de CNF, no entanto, aumentou com a inclusão de palma forrageira na dieta. Os coeficientes de digestibilidade aparente de MS, MO, EE, PB, CT e CNF não foram influenciados pela inclusão de palma forrageira na dieta. Entretanto, o coeficiente de digestibilidade aparente da FDN reduziu linearmente com a inclusão de palma forrageira na dieta. A inclusão da palma forrageira nas dietas influenciou negativamente no consumo dos nutrientes e no coeficiente de digestibilidade da FDN.Palavras-chave: bovino de leite, carboidratos, ingestão, semi-árido Total replacement of corn and partial of tifton hay by forage cactus in diets for lactating dairy cows. Intake and digestibility ABSTRACT -The experiment was conducted to evaluate the intake and apparent digestibility of the nutrients in diets containing different levels (0, 12.0, 25.0, 38.0, and 51.0%) of forage cactus (Opuntia ficus indica Mill) in total replacement of corn ( Zea mays L .) and partial of Tifton hay (Cynodon spp). Five Holstein cows were assigned to a 5x5 latin square. The animals showed an average of 583 ± 7,07 kg BW and lactation period around 110 days. Each experimental period lasted 17 days, 10 days for the adaptation of the animals to the diet and 7 days for data collecting. The DM intake (kg/day, %BW and g/kg 0.75 ), and the intakes of OM, EE, CP, total carbohydrate (TC), NDF, ADF and TDN (kg/day) decreased linearly as forage cactus increased in the diet. However, NFC intake increased with the inclusion of forage cactus in the diet. Apparent digestibilities of DM,OM, EE, CP, TC and NFC were not influenced by the inclusion of the forage cactus in the diet. Nevertheless, NDF apparent digestibility showed a linear decrease as forage cactus increased in the diet. The inclusion of forage cactus in diets showed negative effect on the nutrient intake and the NDF apparent digestibility.

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Section: Introductionunclassified

Substituição total do milho e parcial do feno de capim-tifton por palma forrageira em dietas para vacas em lactação: consumo e digestibilidade

et al. 2007

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“…According to Pessoa et al (2004) there was an imbalance between the supplied and the consumed diet in the treatment with separate ingredients. The feeding strategy based on TMR prevents, among other factors, food selection, and consequently excessive consumption of any ingredient in the diet (Van Soest, 1994;Nocek, 1997;NRC, 2001;Ingvarsten et al, 2001;Silva et al, 2005) a fact which was not observed in this study, where it was verified effect of selectivity in the proportion of nutrients effectively consumed in relation to the nutrients in the offered diet, even in the form of total mixed ration supply.…”

Section: Results E Discussionmentioning

confidence: 52%

“…These data are inn accordance to Davenport et al (1983) and Nocek et al (1986), who found no significant differences in milk production when comparing the effect of total mixed ration and separate concentrate feeding strategies on the performance of dairy cows. Silva et al (2005) assessing different feeding strategies with cactus-based diets for Holstein cows, found no differences between total mixed rations and separate concentrate feeding strategies on milk production and composition.…”

Section: Results E Discussionmentioning

confidence: 98%

Evaluation of feeding supply and forage cactus processing for lactation cows

et al. 2010

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The aim of this study was to evaluate the effect of the manner in which diet is supplied and spineless cactus forage is processed on intake, nutrient digestibility, milk production and composition, concentration of plasma urea nitrogen (PUN) in the milk urea nitrogen (MUN) and production of microbial protein in Holstein cows in lactation. Eight cows (453 ± 75.8 kg) yielding 14 kg milk/day were allotted to a factorial design, with two manners of cactus processing (knife-chopped or forage machine) and two diet supplies (separate concentrate or total mixed ration). Intakes of dry matter, organic matter, neutral detergent fiber and total digestible nutrients were lower when cactus was knife-chopped. Digestibility, milk production and fat and protein yield did not change according to the manner diet was supplied neither by forage cactus processing. Average milk production was 14.8 kg/day for knife-chopped cactus and 14.6 kg/day for cactus chopped in forage machine and 14.8 kg/day when cactus was given in separate concentrate and 14.5 kg/day when it was given in total mixed ration. However, fat content was lower (36 g/kg) for knife-chopped cactus fed cows. Purine derivatives and concentrations of N-ureic were not influenced by the manner in which diet was supplied neither by the forage cactus processing. Means observed for efficiency of microbial protein synthesis (98.9 g/kg TDN), PUN concentrations (21.3 mg/dL) and MUN (18.2 mg/dL) were similar for cactus processing and for the manner in which diet was supplied. Forage-machine cactus processing improves dry matter intake and total mixed ration supply avoids selectivity.

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Estratégia alimentar para dieta baseada em palma forrageira sobre o desempenho e digestibilidade em vacas em final de lactação

Cited by 2 publications

References 5 publications

Substituição total do milho e parcial do feno de capim-tifton por palma forrageira em dietas para vacas em lactação: consumo e digestibilidade

Substituição total do milho e parcial do feno de capim-tifton por palma forrageira em dietas para vacas em lactação: consumo e digestibilidade

Evaluation of feeding supply and forage cactus processing for lactation cows

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