Substituição do Milho pela Farinha de Varredura (Manihot esculenta, Crantz) na Ração de Bezerros Holandeses.: 1. Desempenho e Parâmetros Sangüíneos

Jorge, João Ricardo Vieira; Zeoula, Lúcia Maria; Prado, Ivanor Nunes do; Geron, Luiz Juliano Valério

doi:10.1590/s1516-35982002000100022

Cited by 12 publications

(23 citation statements)

References 8 publications

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“…Corroborating with the results obtained in this study, Jorge et al (2002) found no difference in the blood glucose levels with the increased inclusion (0, 25, 50, 75 and 100%) of cassava flour replacing corn in the diet of Holstein calves.…”

Section: Resultssupporting

confidence: 88%

“…Physical factors operate by the limits on the ability of the rumen and reticulum and the time the food spends in the organ (Jorge et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

“…Jorge et al (2002) evaluating two sources of slow and fast degradation starch in the rumen, justified the digestibility increase of CP, as the slow degradation source was replaced with the increased use of urea in these diets. Zeoula et al (1999), considering two sources of starch and N of low and high ruminal degradability, also Arq.…”

Section: Resultsmentioning

confidence: 99%

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Nutritional value of high moisture corn silage in the diet of Holstein cows

Júnior

Júnior²,

Costa

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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Five Holstein cows were distributed in a 5x5 latin square design to assess the effect of replacement levels of dry ground corn grain (DGCG) by high moisture corn silage (HMCS) on intake, total nutrient digestibility and plasma glucose, according to the following treatments: 1) 100% DGCG; 2) 75% DGCG and 25% HMCS; 3) 50% DGCG and 50% HMCS; 4) 25% DGCG and 75% HMCS; 5) 100% HMCS. The experiment lasted 70 days, divided into five phases of 14 days each. The digestibility was obtained using chromic oxide (Cr 2 O 3 ) as the indicator. Fecal samples were collected twice daily and blood samples were collected on the last day of each period before the first meal (0h) and 2h, 4h, 6h and 12h after the meal. There was no effect (P>0.05) on the intake of dry matter (DM), neutral detergent fiber (NDF), acid detergent fiber (ADF) and starch. The total apparent digestibility of DM, crude protein (CP), NDF and ADF were not affected (P>0.05) by the treatments, as well as the plasma glucose concentration. However, there was a decreased linear effect (P<0.05) for the protein intake and increased linear effect (P<0.05) for starch digestibility, as the level of HMCS was increased in the diets.Keywords: starch, digestibility, glucose, chromium oxide, processing Palavras-chave: amido, digestibilidade, glicose, óxido crômico, processamento RESUMO Cinco vacas da raça Holandesa foram distribuídas em quadrado latino 5x5 com o objetivo de se avaliar o efeito de níveis de substituição do grão seco de milho (GSM) pela silagem de grãos úmidos de milho

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Section: Resultssupporting

confidence: 88%

“…Physical factors operate by the limits on the ability of the rumen and reticulum and the time the food spends in the organ (Jorge et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

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Nutritional value of high moisture corn silage in the diet of Holstein cows

Júnior

Júnior²,

Costa

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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“…A concentração média de glicose foi igual a 87,28 mg/dL, valor próximo ao observado por Jorge et al (2002), que avaliaram a substituição de milho por farinha de varredura para bezerros holandeses e não encontraram diferenças entre os níveis de substituição de 0 a 100% de farinha de varredura e observaram glicose média de 82,6 mg/dL nos bezerros com 164 dias de idade. Todavia, esses valores são superiores aos descritos por Nussio et al (2003), que avaliaram o uso de milho floculado e monensina para bezerras de até 12 semanas de vida e observaram glicose média de 72,72 mg/dL, independentemente do nível de milho floculado e monensina.…”

Section: Resultsunclassified

“…O valor encontrado neste trabalho, de 28,35 ± 10, 94 mg/dL, foi inferior ao valor-referência descrito por Gregory et al (2004), para a concentração sérica de NUS nas condições brasileiras, o que, segundo Wittwer (2000), pode representar o desbalanço da energia e a quantidade de proteína degradável no rúmen ingerida. No entanto, foi superior ao encontrado por Jorge et al (2002), de 11,20 mg/dL, em bezerros com 164 dias de idade alimentados com rações com 0 a 100% de farinha de varredura em substituição ao milho.…”

Section: Resultsunclassified

Níveis de concentrado na dieta de bezerros

Ribeiro¹,

Pereira²,

Bettero³

et al. 2009

R. Bras. Zootec.

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RESUMO -Objetivou-se avaliar níveis de concentrado para bezerros em crescimento. Foram utilizados quatro bezerros mestiços, Holandês × Zebu, com idade média de 7 meses e 155 kg de peso vivo, distribuídos em quadrado latino (4×4). Os animais foram alimentados à vontade, na forma de dieta completa contendo os níveis de 20, 40, 60 e 80% de concentrado, com base na matéria seca (MS Levels of concentrate in the diet of calvesABSTRACT -The objective of this study was to evaluate the levels of concentrate for growing calves. Four Holstein × Brahman crossbred calves with average age of 7 months and 155 kg of body weight were used, distributed into one Latin square design (4 × 4). The animals were fed ad libtum in the form of complete diet containing levels of 20, 40, 60 and 80% of concentrate on the dry matter basis (DM). The diets were composed of Cynodon dactylon hay, corn, soybean meal and mineral mixture, and were isoprotein (15.4%). The DM, organic matter (OM), neutral detergent fiber (NDF) and total carbohydrate (TC) consumption showed linear response; and crude protein (CP) and total digestible nutrients (TDN), quadratic response; expressed in kg/day. When expressed in %BW, the OM, CP, EE and TDN consumption presented quadratic behavior; as DM, NDF and TC showed linear behavior. The apparent total digestibility DM and CP coefficients were quadratic influenced by the levels of concentrate, while OM, EE, NDF and TC showed linear behavior. No effect was observed for the average concentration of ammoniac nitrogen, depending on the levels of concentrate, for each time of analysis. However, for pH, there was influence of the levels for the times analyzed. Likewise, no effect was observed for the average concentration of serum glucose, however, for urea nitrogen serum (UNS), a linear negative effect was observed, depending on the levels for each post-feeding time. Therefore, up to 60% of concentrate could be included in the diet of calves; however higher levels can affect the use of bulky.Key Words: consumption, digestibility, feeding IntroduçãoO animal necessita ingerir quantidades adequadas de nutrientes para exercer suas funções fisiológicas e atender às exigências de mantença, crescimento e produção. Segundo Gomide & Queiroz (1994), os alimentos podem ser classificados quanto aos seus valores nutritivo e alimentício. O valor nutritivo refere-se à composição bromatológica e à digestibilidade do alimento. Ullyatt (1973) define o valor alimentício como o potencial de ingestão de nutrientes que habilita o animal a realizar sua função produtiva. Assim, entende-se que o conceito de valor alimentício é mais amplo R. Bras.

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Prey preference of the common vampire bat (Desmodus rotundus, Chiroptera) using molecular analysis

Bobrowiec¹,

Lemes²,

Gribel³

2015

JMAMMAL

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Morphological identification of prey fragments in vampire bat feces is impossible because of an exclusively blood-based diet. Therefore, studies of their foraging ecology require innovative approaches. We investigated the diet of Desmodus rotundus using a PCR-restriction fragment length polymorphism (RFLP) molecular method by amplifying the cytochrome b mitochondrial gene (380 bp) from DNA fecal samples collected from captive bats fed with blood from chickens, cattle, pigs, dogs, and humans-the 5 most frequently attacked prey species in rural areas of the Brazilian Amazonia. The prey preference of the vampire bat was investigated in 18 riverine villages, where the availability of domestic animals to bats was quantified. Prey DNA amplified from fecal samples exhibited no visible signals of vampire bat DNA. A PCR-RFLP flowchart and a combination of 2 DNA restriction enzymes allowed the direct identification of prey to species level. The enzymes' restriction profile did not overlap with those of vampire bats or wild mammal and avian species. Chickens were the most attacked prey species (61.4% of the identifications, n = 27), but pigs were highly preferred in relation to prey availability. This suggests a preference for mammalian blood in D. rotundus diet, with chickens exploited as a secondary food source. No wild vertebrate species was identified in the fecal samples, indicating that vampire bats are selectively feeding on the blood of domesticated animals, probably because they are more predictable and easily accessed resources.

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Substituição do Milho pela Farinha de Varredura (Manihot esculenta, Crantz) na Ração de Bezerros Holandeses.: 1. Desempenho e Parâmetros Sangüíneos

Cited by 12 publications

References 8 publications

Nutritional value of high moisture corn silage in the diet of Holstein cows

Nutritional value of high moisture corn silage in the diet of Holstein cows

Níveis de concentrado na dieta de bezerros

Prey preference of the common vampire bat (Desmodus rotundus, Chiroptera) using molecular analysis

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