نتایج جستجو برای: milk production

تعداد نتایج: 663825  

2013
K. Zhu G. L. Liu L. M. Huang C. B. Zhang F. S. Fu

The objective of this study was to analyze the correlation between Holstein body conformation traits and milk production traits in the Shanghai region. In total, 871 Holstein cows were randomly chosen from 28 dairy farms in Shanghai at second stage of lactation as the object of our study. Five milk production traits, including 305-d milk yield, butter fat percentage, milk protein percentage, pe...

2016
Yasunori SHINOZUKA Sohei KANEKO Tomoyasu KUROSE Aiko WATANABE Kana KURUHARA Kazuhiro KAWAI

Milk production loss after recovery from acute coliform mastitis causes major economic losses for dairy industries. Declines in milk production and composition are caused by multiple factors, including cow factors, microorganisms and treatments, but the influence of each factor has not been determined. To investigate risk factors for milk loss after treatment for acute coliform mastitis, multip...

A.I. Belyaev A.V. Randelin B.A. Sherstyuk E.Y. Bondarkova E.Y. Zlobina I.F. Gorlov, M.I. Slozhenkina N.I. Mosolova

The aim of this study was to investigate the effectiveness of a new experimental complex in diets of lactating cows. The scientific and economic experiments were conducted in conditions of a large industrial complex for milk production from cows of Holstein breed (Russia). Four groups of Holstein cows (third calving), 20 animals each, were formed to conduct an analog method research. The cows i...

2011
Tanveer Ahmad

Bovine somatotropin (bST) increases milk production in dairy animals. The maximum increase in milk production has been observed up to 41%. Somatotropin did not change milk composition significantly. During short-term application of bST, cows mobilized their body-reserves to support the increased milk production. Although DM intake of cows was increased in the long-term applications, however, gr...

2004
M. Younan

The unhygienic handling practices in traditional camel milk production and in the informal camel milk trade represent serious obstacles for the introduction of modern dairy processing and marketing. The successful adaptation of pastoral subsistence production to the needs of an improved camel milk production and marketing system will depend, to a large extent, on safeguarding the milk quality a...

A. Gonzalez Rodriguez A.I. Roca Fernandez,

In pasture-based milk production systems, using available farm resources in order to reduce feeding costs, the composition and functional properties of dairy cows’ milk are of considerable importance to the dairy farmer, manufacturer and consumer. Basically, there are three options for altering the composition and/or functional properties of milk: 1) cow nutrition and grazing management, 2) cow...

ژورنال: علوم آب و خاک 2009
جوزی شکاگورابی, ساحره, شادپرور, عبدالاحد,

In selection index procedure, phenotype and genetic (co)variance matrices of traits are used for calculating different genetic parameters like index coefficients, index variance, genetic gain in selection goal and selection accuracy. Sometimes, it is possible that these matrices become inconsistent or they are not positive, nor definite. In the current study, for investigation of the effect of ...

Journal: :iranian journal of applied animal science 2013
l. fita m.m. trivedi a.m. patel b. tassew c.g. joshi

the study was conducted to indicate the determinants of technical efficiency of the dairy farmers in ada’a district of oromia state, ethiopia. the study was arranged in four purposively selected peasant associations of the peri-urban and four kebeles of the urban dairy production sub-systems from which thirty dairy farmers were selected randomly. a total of two hundred forty respondents were pe...

جوزی شکاگورابی, ساحره, شادپرور, عبدالاحد,

In selection index procedure, phenotype and genetic (co)variance matrices of traits are used for calculating different genetic parameters like index coefficients, index variance, genetic gain in selection goal and selection accuracy. Sometimes, it is possible that these matrices become inconsistent or they are not positive, nor definite. In the current study, for investigation of the effect of ...

Journal: :Animal reproduction science 2011
J L M Vasconcelos R F Cooke D T G Jardina F L Aragon M B Veras S Soriano N Sobreira A B Scarpa

The objective of this study was to evaluate the associations among milk production, rectal temperature, and pregnancy maintenance in lactating recipient dairy cows. Data were collected during an 11-mo period from 463 Holstein cows (203 primiparous and 260 multiparous) assigned to a fixed-time embryo transfer (ET) protocol. Only cows detected with a visible corpus luteum immediately prior to ET ...

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