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...

Camel is known as “Ship of the Desert”. Camel milk is different from cow milk in its chemical composition but it contains all essential nutrients as cow milk. Indian camels yield 3.5 kg to 10 kg of milk per day. The taste of camel milk depends upon availability of plants for grazing. The water content of camel milk fluctuates from 84 percent to 90 percent. Camel keepers utilize milk either raw,...

Thirteen crossbred ewes were used to compare weigh-suckle-weigh (WSW) and machine milking (MM) methods for determining milk production of ewes that were rearing single or twin lambs. At parturition, ewes were 13 mo of age and produced six single lambs and seven pairs of twin lambs. Milk production estimates were initiated on d 6 of lactation and a 3-d rotation of the two techniques was implemen...

For Bangladesh, the requirement for food is very high due to its huge population. To achieve self-sufficiency in food grain production, the HYV rice varieties are widely produced in Bangladesh, particularly in the dry season, and this requires a large volume of groundwater irrigation. Groundwater of many areas of our country is severely contaminated with arsenic. So, there is a possibility of a...

Selection of dairy cows for economie merit requires the use of a model for genetic merit that involves the cross-product of the genetic values for milk and milk fa t percentage. A linear and a quadratic index are described as procedures for selection of cows, the linear index being blp.~ + bzp, and the quadratic index being blp,~ + b~_pt + b~p,n 2 + b~p, ~ + b~p.,pt where p~ and pt are the phen...

akbar pirestani,*, mohammad javad bagheri, sayed mahdi hashemi, amir hossine asgarishahi   department of animal science, khorasgan (isfahan) branch, islamic azad university, isfahan, iran     *corresponding author: email: [email protected]     received: 20 july 2013   accepted: 21 november 2013       abstract this study was conducted to evaluate the impact of se+vit e and cu injection on...

background and objectives: psychrotrophic bacteria can produce enzymes at low temperatures; this provides a wide biotechnological potential, and offers numerous economical advantages over the use of mesophilic bacteria. in this study, extracellular protease production by psychrotrophic rheinheimera sp. (km459533) was optimized by the response surface methodology. materials and methods: the cult...

Qinghai Plateau yak are the most important grazing livestock for milk and beef production on the Qinghai-Tibetan plateau because they are adapted to extremes of cold environment and higher elevation and can be grazed throughout the year. Milk samples (n = 47) from Qinghai Plateau yak cows of different parities and milk samples (n = 6) from Qinghai yellow cattle cows were analyzed using gas chro...

Milk is a high nutrient food source. Its major composition includes water, fat, protein, sugar, vitamin and minerals. In Thailand, milk consumption has been promoted through school dairy projects. There are dairy farms throughout Thailand, of which most are small-sized farms. This leads to an uneven nutrient composition due to different agricultural practices, feed, and environments. Thus, the ...