Avaliação econômica de bezerros alimentados com colostro fermentado, associado ao óleo de soja e zeranol

Castro, Álvaro Luiz Marinho; Campos, Warley Efrem; Mancio, Antonio Bento; Campos, Oriel Fajardo de

doi:10.1590/s0102-09352004000200010

Cited by 2 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O aleitamento com silagem em água, mesmo tendo apresentado redução de 76,36% dos custos em comparação ao aleitamento com leite, resultou em 41,82% de redução no ganho de peso total, o que pode comprometer o desempenho futuro dos animais. Castro et al (2004a) verificaram custo operacional médio de R$ 68,20, para bezerros alimentados com leite integral, e R$ 29,30 para os alimentos com colostro fermentado.…”

Section: Resultsunclassified

“…No manejo de bezerros na fase de cria em fazendas leiteiras, o leite utilizado na alimentação dos animais ocasiona desvio de recursos e reduz a lucratividade do sistema (Castro et al, 2004a). No entanto, o leite possui alto valor biológico, o que torna um desafio sua substituição por alimentos com concentrações nutricionais semelhantes (Modesto et al, 2002).…”

Section: Introductionunclassified

See 1 more Smart Citation

Desempenho de bezerros alimentados com silagem de leite de transição

Azevedo

Araújo

Coelho

et al. 2013

Pesq. agropec. bras.

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi avaliar o desempenho de bezerros da raça Holandesa, aleitados com leite ou silagem de leite de transição diluída em água ou misturada ao leite, bem como realizar análise econômica das dietas. Foram utilizados 18 animais, com peso corporal inicial médio de 36,50±4,03 kg, alojados individualmente em baias. Os animais receberam quatro litros de dieta líquida por dia, durante 54 dias. Os dados de consumo, ganho de peso diário, medidas de crescimento e conversão alimentar foram analisados em parcelas subdivididas; e o peso corporal final, o ganho total e a ocorrência de diarreia foram analisados em delineamento inteiramente casualizado. A silagem de leite de transição não alterou o consumo de concentrado e o total de matéria seca, nem a ocorrência de diarreia. O desempenho dos animais foi reduzido, quando a silagem foi diluída em água, o que resultou em menor peso final e menor ganho total de peso. Os animais tratados com silagem misturada ao leite tiveram desempenho similar aos tratados com leite, o que possibilita menor custo por quilograma de ganho de peso total e se mostra como opção viável para o aleitamento de bezerros leiteiros.Termos para indexação: bovinos, colostro, concentrado, desmame de bezerros, silagem. Performance of calves fed silage transition milkAbstract -The objective of this work was to evaluate the performance of Holstein calves fed with milk or transition milk silage diluted on water or mixed with whole milk, as well as to determine the economic viability of the diets. Eighteen calves, with an average initial body weight of 36.50±4.03 kg, were individually housed in stalls. The animals were fed four liters of the liquid diet a day, during 54 days. Consumption data, daily weight gain, growth measurements, and feed conversion were analyzed in split plots. Final body weight, total weight gain, and occurrence of diarrhea were analyzed in a completely randomized design. Transition milk silage did not affect concentrate intake, total dry matter intake and the occurrence of diarrhea. Animal performance was reduced when silage was diluted on water, resulting in lower final weight and lower total weight gain. Animals treated with transition milk silage mixed with whole milk had a similar performance to the ones treated with whole milk, which allows a lower cost per kilogram of total weight gain, and shows to be a viable option for the feeding of milking calves.

show abstract

Section: Resultsunclassified

Section: Introductionunclassified

Desempenho de bezerros alimentados com silagem de leite de transição

Azevedo

Araújo

Coelho

et al. 2013

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…In animals weaned at approximately 60 days after birth, as in this experiment, approximately 240 L of milk per heifer is consumed. This value represents a loss in income for the farmer because the milk is not sold, thereby diverting resources and reducing the profitability of dairy farms [7].…”

Section: Discussionmentioning

confidence: 99%

Weight Gain Comparison between Heifers Fed Colostrum or Whole Milk until Weaning

Helayel

Souza

Caldas

et al. 2019

Acta Scientiae. Vet.

View full text Add to dashboard Cite

Background: The milk-feeding phase, wherein whole milk is the natural food, is critical to calf development, health, and vitality. However, feeding milk to calves is costly in the rearing system because the milk supplied to calves is not sold. In farms in which the average production is high, excess colostrum and transitional milk are produced that are used to feed calves until weaning. The objective of this study was to evaluate the performance of heifers exclusively fed colostrum (including transitional milk) or raw whole milk.Materials, Methods & Results: Immediately after their birth, 83 ear-tagged healthy Holstein Friesian heifers adequately receiving the initial colostrum were separated into two experimental groups. Group 1 (n = 34) was fed only fresh whole milk and group 2 (n = 49) was fed only colostrum diluted in water at a 2:1 ratio. Colostrum was removed from cows until the fifth day after birth and was stored in sanitized disposable plastic bottles, stored in a freezer at -20°C and before administration, the colostrum was thawed. Liquid diets were administered using a bottle twice a day during the first month, namely 2 L in the morning and 2 L in the afternoon. During the second month, the heifers were fed 4 L once a day in the morning. The heifers had access to an enclosure with fodder, in addition to concentrate specifically for heifers, which was placed in an individual trough daily. The leftovers were weighed at the end of the afternoon. The heifers were abruptly weaned when they reached a daily intake of 1 kg of concentrate. The heifers were individually weighed at birth and at 30, 60, 90, 120, 150, and 180 days. The average weights were 40.4, 54.1, 74.5, 95.1, 108.2, and 126.1 kg in group 1 and 45.4, 58.4, 78.2, 95.9, 110.8, and 125.1 kg in group 2. The use of diluted colostrum was satisfactory as it resulted in similar weight gains.Discussion: Feeding milk to calves is one of the most cost-increasing factors to a dairy farm because the total milk volume fed to animals at this stage is not sold and results in a large loss in income for the farmer. Calf management during the milk-feeding phase is of the utmost importance, especially in the first days after birth, to ensure the development of the systemic immune response of animals. The performance of these animals in the first months affects their subsequent development. Whole milk is commonly used to feed calves for 8 to 12 consecutive weeks. However, whole milk can be replaced by a good substitute, such as colostrum and transitional milk. The aim of this study was to show that these substitutes are effective alternatives for calf development and cost reduction. The weight gain of animals fed diluted colostrum was similar to that of animals fed only whole milk, which corroborates the results of previous studies on the development of calves treated with colostrum-based liquid diet, fermented or not, with and without additives. Those studies reported favorable growth rates in comparison with the traditional production system as a result of higher dietary protein levels in colostrum-based diets. The availability of roughages and concentrates should be initiated during the milk-feeding phase, as it is fundamental for rumen development, helps in early weaning and reduces expenses during this period. Replacing whole milk with colostrum and transitional milk for feeding calves, stimulating roughage, and concentrating intake can result in significant savings in the rearing system.

show abstract

Avaliação econômica de bezerros alimentados com colostro fermentado, associado ao óleo de soja e zeranol

Cited by 2 publications

References 6 publications

Desempenho de bezerros alimentados com silagem de leite de transição

Desempenho de bezerros alimentados com silagem de leite de transição

Weight Gain Comparison between Heifers Fed Colostrum or Whole Milk until Weaning

Contact Info

Product

Resources

About