نتایج جستجو برای: milk production and composition

تعداد نتایج: 16957319  

2017
Katie Velez André F. Brito

Ground Flaxseed (Linum uitatissimum) is a lipid supplement that is commonly fed to dairy cows. It is believed that supplemental lipid can change the Fatty Acid (FA) composition in the milk, and decrease methane production. Twenty lactating organic Jersey cows, housed at the UNH Organic Dairy Research Farm (ODRF), were randomly assigned to five replicated 4 × 4 Latin squares to investigate the e...

ژورنال: علوم آب و خاک 2006
عبدالاحد شادپرور, , مرادپاشا اسکندری نسب, , احمد قربانی, , سید ابوالحسن میر مهدوی چابک, ,

Using a deterministic model for dairy herd according to milk pricing system in Iran, the economic weights of milk production, fat percentage, protein percentage and herd life with minimized cost were identified, while restricted total input and total costs were variable in animal unit. By data simulation and the data obtained from 3 different dairy herds in Iran, the sensitivity of economic val...

Journal: :Revue scientifique et technique 1997
I Klinger I Rosenthal

Goats and sheep rank third and fourth in terms of global milk production from different species, but unlike cow milk, which has stringent hygiene and quality regulations, microbiological standards for the production and distribution of goat milk and sheep milk are more relaxed. Difficulties in managing the sanitary quality of sheep and goat milk derive from a series of factors including the low...

2012
K. Xia W. B. Xi Z. B. Wang Y. Wang Y. G. Zhang

The present experiment aimed to evaluate the effect of HMBi on the production performance and metabolism in dairy cows. Thirty multiparous Holstein dairy cows under similar conditions were randomly assigned to three dietary treatments; i) Control, a basal diet; ii) T1, a basal diet plus HMBi (0 g prepartum and 18 g postpartum); and iii) T2, a basal diet plus HMBi (10 g prepartum and 18 g postpa...

2016
G. Jayaprakash M. Sathiyabarathi M. Arokia Robert T. Tamilmani

Choline is a vitamin-like substance it has multi-function in animal production, reproduction, and health. The transition period is most crucial stage in lactation cycle of dairy cows due to its association with negative hormonal and energy balances. Unfortunately, unprotected choline easily degrades in the rumen; therefore, choline added to the diet in a rumen-protected form. The use of rumen-p...

Journal: :Biological research 2008
Cíntia R P Azara Ingrid C Maia Carolina N Rangel Mário A C Silva-Neto Renata F B Serpa Edgar F O De Jesus Maria G Tavares Do Carmo Eliane Fialho

Lactating Wistar rats were fed a liquid diet containing either ethanol [ethanol-fed group (EFG)] or an isocaloric amount of carbohydrate [pair-fed group (PFG)] from day 1 postpartum up to day 14 of lactation, to investigate micro/macronutrient milk composition and the mineral status of pups. EFG presented a reduction of daily milk production and milk composition was significantly higher in prot...

A. Gonzalez Rodriguez A.I. Roca Fernandez,

Successful pasture-based milk production systems pivot on balancing dairy cows’ feed requirements with seasonal and annual fluctuations in pasture production. In order to maximise cow production from grazing dairy systems, it is necessary to reach an efficient utilization of grazed grass for feeding cows and the development of appropriate grazing management systems designed to maximize daily pa...

Journal: :iranian journal of applied animal science 2015
h.m.a. gaafar e.m. abdel-raouf m.m. bendary g.h. ghanem k.f. el-reidy

sixteen multiparous lactating buffaloes after 8 weeks of calving and weighing 500 to 600 kg were used in a complete switch-back design with four groups. buffaloes in the first group were fed the control ration (r1) consisted of dm basis of 60% concentrate feed mixture (cfm)+20% rice straw (rs)+20% berseem hay (bh), while in the other groups the rations consisted of dm basis of 40% cfm+20% rs+40...

Journal: :علوم دامی ایران 0
حمیدرضا میرزایی الموتی استادیار، دانشگاه زنجان مهدی کاظمی جوجیلی کارشناس ارشد، دانشگاه زنجان حمید امانلو استاد، دانشگاه زنجان مینا وزیری گهر دانشجوی سابق دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج و محقق ارشد (دکتری تغذیه نشخوارکنندگان)، شرکت زانیار آریایی، تهران

the objective of this study was to evaluate the effect of frequency of feeding total mixed ration (tmr) on total-tract digestibility, milk production and composition in lactating cows, using meta-analysis and meta-regression approaches. data of fourteen experiments having containing 25 comparisons between treatment (higher feeding frequency) and control (lower feeding frequency) groups, defined...

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