نتایج جستجو برای: milk production and profit functions

تعداد نتایج: 16992525  

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...

Amin Ashayerizadeh Hedayatallah Roushanfekr Jamal Fayyazi Karim Karimi, Khalil Mirzadeh, Mohammad Taghi Beigi Nassiri

The objective of this study was to determine the polymorphism of bovine β-lactoglobulin (β-LG) gene and its association with milk production traits in Iranian Najdi cattle. Blood samples were collected from 80 Najdi cattle from the Najdi cattle breeding station located in Shoshtar, Khuzestan. Polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) techniqus were used...

2004
Shu-Hsing Chung Chun-Mei Lai Hsin-I Lee Hsin-Yu Lai S. H. Chung C. M. Lai A. H. I. Lee

This paper proposes a production planning system for a semiconductor enterprise with multi-site fabs. Profit achievement of the whole enterprise and quick response mechanism for the due date setting are the major considerations of the proposed system. Two modules are included in this system. Throughput planning module considers the achievement of enterprise’s profit, operating characteristics o...

F. A. Senel H. Ozturk S. Aytar

This study has developed a production inventory model where the cycle timeis fuzzy, the existence of defective products is assumed in each batch andproduct screening is performed both in-production and after-production.Triangular fuzzy numbers serve to model uncertainties in the cycle time, anda fuzzified total inventory profit function is created by thedefuzzifica...

Journal: :علوم دامی ایران 0
محمود وطن خواه دانشیار دانشگاه آزاد اسلامی، واحد شهرکرد مهراب فرجی کارشناس ارشد علوم دامی سازمان جهاد کشاورزی استان چهارمحال و بختیاری

four hundered and ninety five (495) smallholder dairy farms active in 52 villages of different cities in chaharmohalo bakhtiari province, keeping 1321 lactating within a total of 2811 mature cows (lactating and dry) were used. these herds were taken during winter 2009 to summer 2010 to assess some of the production, reproductive and economic performance traits under smallholder management syste...

Journal: :Tehnika i oborudovanie dlâ sela 2022

The dynamic sofmilk production in farms of all categories the Russian Federation is given. From standpoint theory functional systems, contradictions between systemforming factors industry, which seeks to increase per capita natural milk, and industry enterprises processing complex trade, profit dominates as a system-forming factor, are reviewed. Based on universal model Michael Portner, intra-i...

Journal: : 2022

In cows of the Belarusian black-motley breed, polymorphism genes for lactoferrin and mannose-binding leсtin was established. The genotypes LTF AA , AB MBL1 TT TC CC were identified. milk productivity (yield, fat content, amount basic content), number somatic cells in studied, economic efficiency production from with different calculated. It found that profit genotype 7.91 rubles higher than gen...

R. Abdullahpour S. Gharahveysi,

Random regression models (RRM) are used for genetic estimations of milk traits in dairy cows. RRM utilize data on traits that are repeated during the time, such as milk trait, which allows of the evaluation of the test day production information. In this study, to estimate genetic parameters for milk production trait, test day records (TDR) were collected from the first lactation of Holstein co...

2013
Changhee Do Nidarshani Wasana Kwanghyun Cho Yunho Choi Taejeong Choi Byungho Park Donghee Lee

This study was performed to estimate the effect of age at first calving and first two calving intervals on productive life and life time profit in Korean Holsteins. Reproduction data of Korean Holsteins born from 1998 to 2004 and lactation data from 276,573 cows with birth and last dry date that calved between 2000 and 2010 were used for the analysis. Lifetime profit increased with the days of ...

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