Comportamento ingestivo, consumo e digestibilidade de nutrientes, produção e composição do leite de vacas alimentadas com silagem de milho ou cana-de-açúcar com caroço de algodão

Sousa, Daniel de Paula; Campos, José Maurício de Souza; Filho, Sebastião de Campos Valadares; Lana, Rogério de Paula; Sediyama, Camilla Atsumi Zanuncio; Neto, Josué Mendes

doi:10.1590/s1516-35982009001000028

Cited by 15 publications

(14 citation statements)

References 34 publications

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“…The lower Table 2 -Milk production, estimated dry matter intake and stocking rate in Mombasa grass pasture supplemented in the autumn-winter period milk production obtained with this source of forage corroborates the assertion of other authors (Magalhães et al, 2004;Souza et al, 2009), that dairy cows fed with sugarcane produce less than when fed with corn silage. Similar trend was observed with Mantiqueira cows producing between 15 and 30% less when supplemented with black oat and between 5 and 23% less when supplemented with sorghum silage.…”

Section: Resultssupporting

confidence: 84%

Production and quality of milk from Mantiqueira dairy cows feeding on Mombasa grass pasture and receiving different sources of roughage supplementation

Peres

Carvalho²,

Carvalho³

et al. 2012

R. Bras. Zootec.

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-Production and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years.The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m 2 each, including three replications with 19 paddocks each.The pasture was managed with two occupation days and 36 resting days. During the spring-summer period, cows received only grass pasture. In the autumn-winter period, they had access to Mombasa grass pasture and received roughage supplementations (black oat pasture; sorghum silage or sugarcane + urea) and pasture every 28 days, alternately. The animals had access to mineral mix and water and received 500 g of concentrated in each of the two milking times. The experimental design used was for response to continuous flow in rotational trial, similar to the Latin square model. In the spring-summer period, the average milk production was 12.2±2.2 and 14.0±3.8 kg/cow per day; for the autumn-winter period, the milk production was 13.5±2.9 and 12.1±2.5 kg/cow per day in the black oat pasture; 11.8±2.5 and 10.9±2.3 kg/cow per day in the sorghum silage and 11.3±1.8 and 8.4±1.5 kg/cow per day in the sugarcane + urea, for 1 st and 2 nd years evaluated, respectively. The black oat was the roughage supplementation that yielded the highest average daily milk production. There were no differences in the milk chemical composition between roughage supplementations.

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Section: Resultssupporting

confidence: 84%

Production and quality of milk from Mantiqueira dairy cows feeding on Mombasa grass pasture and receiving different sources of roughage supplementation

Peres

Carvalho²,

Carvalho³

et al. 2012

R. Bras. Zootec.

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“…A manutenção de níveis elevados de amônia é, em parte, explicada pelos maiores consumos de proteína verdadeira e pela menor taxa de degradação do caroço de algodão. Os valores médios de consumo de proteína bruta foram de 3,26; 2,48; 2,67 e 2,45 kg/dia (Sousa et al, 2009) para as dietas à base de silagem de milho e cana-de-açúcar com 0, 7 e 14% de caroço de algodão, respectivamente.…”

Section: Resultsunclassified

“…A excreção de alantoína no leite em relação à excreção total de derivados de purina foi de 4,57% e está de acordo com os valores descritos por Valadares et al (1999), de 4,2 a 5,7%; Oliveira et al (2001), de 4,5%; e Souza et al (2006), de 5,7% (Tabela 4). A maior produção de leite nos animais alimentados com silagem de milho e cana-de-açúcar com caroço de algodão (Sousa et al, 2009) explica, em parte, a maior excreção de alantoína no leite, pois, segundo Gonda & Lindenberg (1997), a produção de leite influencia a concentração e a quantidade de alantoína excretada no leite. O valor médio encontrado de N-microbiano, de 198,87 g/dia (Tabela 4), foi semelhante aos obtidos por Mendonça et al (2004) e Oliveira et al (2001), de 193,2 e 193,4, em vacas de produções médias de 18,9 e 22,0 kg leite/dia, respectivamente.…”

Section: Resultsunclassified

Parâmetros fermentativos, produção de proteína microbiana, concentrações de ureia no leite e no plasma e balanço de nitrogênio de vacas alimentadas com silagem de milho ou cana-de-açúcar com caroço de algodão

et al. 2009

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Doze vacas da raça Holandesa foram distribuídas em três quadrados latinos 4 × 4 com o objetivo de avaliar o pH, o N-amoniacal, a produção de proteína microbiana, o número de protozoários no rúmen, a concentração de N-ureia no plasma e no leite e balanço de nitrogênio. Os tratamentos consistiram de silagem de milho ou cana-de-açúcar contendo 0, 7 ou 14% de caroço de algodão. Não houve diferença no pH quando fornecida cana-de-açúcar, apesar da diminuição dos valores após o início da alimentação. Os valores de N-amoniacal mantiveram-se acima de 15 mg/dL, após 6 horas de alimentação, apenas quando fornecida silagem de milho e cana-de-açúcar com 7% de caroço de algodão. O maior consumo de MS e nutrientes obtido com a silagem de milho implicou em menor eficiência de uso do nitrogênio e maiores excreções de N-ureia na urina em relação às demais dietas (150,6 vs 96,0 mg/kg PV). O fornecimento de cana-de-açúcar com 7% de caroço de algodão promoveu maiores quantidades de purinas totais (PT), purinas absorvidas (PA), nitrogênio microbiano (207, 6 vs 185,2 g/dia) e melhor balanço de compostos nitrogenados (31,5 vs 15,5) em relação às demais dietas com cana-de-açúcar. O menor consumo de MS e extrato etéreo quando fornecida cana-de-açúcar sem caroço de algodão resultou em maior número de protozoários (129,4 vs 34,0 × 10³/mL), maior excreção urinária de nitrogênio e menor síntese de proteína microbiana em relação às demais dietas, o que indica falta de sincronização na degradação da energia e proteína na relação volumoso:concentrado proposta neste experimento.

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“…In this study, although there was no difference for feeding among diets, lower absolute values were observed for feeding time with the HCS diet, and because it presented one of the highest IDM (Table 3), the higher FE expressed in gDM/h is explained. Sousa et al (2009), comparing diets based on corn silage and sugarcane for dairy cows, observed higher DM and NDF in the diet with corn silage compared with sugarcane, but similar times for feeding and rumination, thus allowing higher FE and RE for both DM and for NDF in diets with corn silage. A similar phenomenon occurred in this study for diets based on EGH, CS and HCS compared with diets with sugarcane bagasse.…”

Section: Discussionmentioning

confidence: 90%

Forage cactus associated with different fiber sources for lactating Sindhi cows: production and composition of milk and ingestive behavior

et al. 2015

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-The objective of this study was to evaluate the association of forage cactus with different fiber sources (elephant grass hay -EGH; corn straw -CS, hay of cassava shoots -HCS; fresh sugarcane bagasse -FSB; and hydrolyzed sugarcane bagasse -HSB) on the milk yield and composition and the feeding behavior of lactating Sindhi cows. Five cows with average body weight, average daily milk yield, and average daily 4%-fat-corrected milk yield of 265, 4.95 and 5.22 kg, respectively, were used in a 5 × 5 Latin square design. The effect of experimental diets on milk yield and composition, feeding time (FT), rumination time (RT), idle time, mean values of total chewing time (TCT), number of ruminal boli (NRB), number of rumination chews (NRC), and feed efficiency (FE) and rumination efficiency (RE) expressed as a function of DM and NDF were analyzed. Milk yield in kg/day and corrected to 4.0% fat from the animals that received cactus associated with CS were higher as compared with the treatment with hydrolyzed sugarcane bagasse. The milk composition variables were not influenced by the treatments, and nor were FT, RT, TCT, NRB and NC. Two patterns were observed for FE and RE, with higher efficiency of the diets with EGH, CS and HCS and lower efficiency for diets containing sugarcane bagasse. In this context, Sindhi cows fed forage cactus associated with corn straw, elephant grass hay, and hay of cassava shoots present better performance, feeding efficiency, and rumination responses than those fed forage cactus associated with fresh sugarcane bagasse and hydrolyzed sugarcane bagasse.

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Comportamento ingestivo, consumo e digestibilidade de nutrientes, produção e composição do leite de vacas alimentadas com silagem de milho ou cana-de-açúcar com caroço de algodão

Cited by 15 publications

References 34 publications

Production and quality of milk from Mantiqueira dairy cows feeding on Mombasa grass pasture and receiving different sources of roughage supplementation

Production and quality of milk from Mantiqueira dairy cows feeding on Mombasa grass pasture and receiving different sources of roughage supplementation

Parâmetros fermentativos, produção de proteína microbiana, concentrações de ureia no leite e no plasma e balanço de nitrogênio de vacas alimentadas com silagem de milho ou cana-de-açúcar com caroço de algodão

Forage cactus associated with different fiber sources for lactating Sindhi cows: production and composition of milk and ingestive behavior

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