Milk Production Per Cow
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Determination of factors affecting dairy cattle: a case study of Ardahan province using data mining algorithms
ABSTRACT This study was conducted to compare predictive performances of different data-mining algorithms for determining factors influencing the average daily milk yield at dairy cattle enterprises of Ardahan province, located in the Eastern Anatolia region of Turkey. The algorithms employed in the present study were Classification and Regression Tree (CART)
R. Bras. Zootec.. Publicado em: 28/11/2019
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2. Hypomagnesemia in dairy cattle in Uruguay
RESUMO: Descreve-se um surto de hipomagnesemia em bovinos leiteiros da raça Holandês com alimentação a base de pastagens de aveia (Avena sativa) em crescimento no Uruguai, nos meses de maio a julho (outono-inverno) de 2017. De um rebanho de 270 vacas em ordenha, nove (3,3%) morreram. As nove vacas tinham entre dois e nove anos, estavam entre a primeira e
Pesq. Vet. Bras.. Publicado em: 14/10/2019
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3. Nutritional potential of bamboo leaves for feeding dairy cattle
RESUMO A escassez de alimentos durante a estação seca nas terras altas de Madagascar causa impactos negativos à produtividade do gado leiteiro e aos rendimentos dos agricultores. O bambu pode produzir elevada quantidade de biomassa e ser uma alternativa para aumentar a oferta de forragem para o gado. Objetivou-se avaliar a composição, bem como a taxa ó
Pesqui. Agropecu. Trop.. Publicado em: 13/05/2019
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4. Influence of forage production area, concentrate supply, and workforce on productive results in milk production systems
ABSTRACT This study aimed to investigate the influence of forage production area, concentrate supply, and farm labor on characterization of milk production systems (MPS) and their productive results. Milk volume data provided in 2014 by 110 dairy farms located in the eastern region of Santa Catarina State, Brazil, were obtained from a dairy industry. Forty-f
R. Bras. Zootec.. Publicado em: 25/02/2019
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5. Economic values for milk production and quality traits in south and southeast regions of Brazil
The objective of this study was to calculate economic values for milk (MY), protein (PY) and fat productions (FY) and somatic cell count (SCC) which could be used to compose an economic index to rank animals involved in an international genetic evaluation program of Holstein cattle used in the commercial dairy population in Brazil. The main milk production s
R. Bras. Zootec.. Publicado em: 2014-12
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6. Identification and quantification of benchmarks of milk production systems in Minas Gerais
The objective of this study was to identify and quantify benchmarks of milk production systems. The technological profile and size, livestock and economic indicators of sixteen farms in the region of Triângulo Mineiro were analyzed. Indicators correlated with rate of return on capital (RRC) were identified and quantified in four scenarios of RRC (6, 8, 10 a
R. Bras. Zootec.. Publicado em: 2012-10
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7. 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 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 m² each, including three replications with 19 paddocks each. The pastur
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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8. COMPORTAMENTO INGESTIVO E PRODUTIVIDADE DE VACAS DAS RAÇAS JERSEY E HOLANDESA EM PASTAGENS DE AZEVÉM ANUAL / INGESTIVE BEHAVIOUR AND PRODUCTIVITY OF COWS OF JERSEY AND HOLSTEINS BREEDS IN ANNUAL RYEGRASS PASTURES
Foram estudados o comportamento ingestivo, a dinâmica das pastagens e a produtividade de vacas das raças Jersey e Holandesa em pastagens de azevém anual (Lolium multiflorum) no noroeste do Rio Grande do Sul. O experimento foi conduzido de 29/04/2010 a 29/10/2010, sendo utilizadas, no total, onze vacas-testes de cada grupo racial e um número variável de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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9. Avaliação do desempenho produtivo e reprodutivo de vacas leiteiras puras e mestiças da raça holandesa na Região do Alto do São Francisco-MG / Evaluation of the productive and reproductive performance of pure bred and crossbred Holstein dairy cows in the Alto do São Francisco-MG
The data used in this work were obtained from individual records on production and reproduction of black and white Holstein dairy cows, Holstein-Gir, Holstein- Gir, 7/8 Holstein-Gir, 15/16 Holstein-Gir and Holstein-Jersey, from 23 farms located in the region of Alto do São Francisco-MG. All the farms applied a very similar semiintensive management system. T
Publicado em: 2009
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10. Desempenho produtivo e reprodutivo e parâmetros sanguíneos de vacas leiteiras alimentadas com diferentes fontes de gordura no período de transição e inicio de lactação / Productive and reproductive performance and blood parameters of dairy cows feeding with different fat sources in transition period and early lactation
This study was carried out to evaluate the use of different fat sources in dairy rations, in transition period and early lactation on follicular dynamics, reproductive efficiency, nutrients intake and digestibility, composition and milk yield, composition of protein fraction and energy balance. Third Holstein cows, with production of 30,0 Kg/cow/day on previ
Publicado em: 2009
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11. Analysis of zootechnic and economic indicators of dairy farms in Ituiutaba, Minas Gerais / Análise de indicadores zootécnicos e econômicos de fazendas leiteiras em Ituiutaba, Minas Gerais
The objectives of this work were to identify and quantify reference-indicators in dairy production systems in the region of Ituiutaba, Minas Gerais, and thus, regionalize the major dairy farming indicators, as suggested by Oliveira et al. (2007) for southern Bahia. The technological profile and the zootechnic, economic and size indicators were analyzed in 16
Publicado em: 2008
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12. Evaluation of milk production systems using a dynamic simulation model / Avaliação de sistemas de produção de leite por meio de modelo dinâmico de simulação
The Thesis is divided into four chapters. Chapter 1 aimed at selecting functions that mathematically represent lactation curves, providing a better fit to the observed data, to be used in simulation models of milk production systems. Data base was built with 6,459 recordings of daily milk production per cow obtained from monthly and quarterly milk controls b
Publicado em: 2008