نتایج جستجو برای: lactation length
تعداد نتایج: 321934 فیلتر نتایج به سال:
Nutrition has a significant effect on reproduction and lactation in Ruminant. Supply of require nutrient of dairy cows and ewes in early lactation is the main challenges that will be considered, since in most cases the animals facing negative energy balance after calving and the beginning of the period of lactation. Negative energy balance may sometimes result in reduced livestock production an...
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...
Nutrition has a significant effect on reproduction and lactation in Ruminant. Supply of require nutrient of dairy cows and ewes in early lactation is the main challenges that will be considered, since in most cases the animals facing negative energy balance after calving and the beginning of the period of lactation. Negative energy balance may sometimes result in reduced livestock production an...
The present investigation was undertaken to access first lactation total milk yield, length, productive life, herd life and life. Breeding information were used from the history sheet registers inventory of Hariana cattle maintained at DUVASU farm, Mathura Babugarh Hapur. data animals with date calving 1966 2018 birth 1962 2013 collected for study. overall averages FLTMY, FLL, PL, HL TL estimat...
The Ural type of the domestic black-and-white breed is characterized by high productivity and good suitability for use in conditions industrial milk technology. During its breeding, purebred bulls-producers Holstein both foreign breeding continues. As a result conducted research, it was found that cows changes significantly with age. Milk yield 305 days lactation increases from 1 to 3 lactation...
In this study, a maternal feed restriction (MFR; 105 g/d) in primiparous rabbit does was applied from day 0 to 7 post artificial insemination (AI) (R07, n = 96), 21 AI (R721, 92), (R021, 94) or fed ad libitum during whole pregnancy (Control, n= 92). Feed intake (FI) measured after MFR over. On 28 of gestation, fetoplacental development evaluated (n 11/group) and the productive parameters remain...
Mice raised on a coconut oil (CO)-containing diet for 6 wk prior to the addition of conjugated linoleic acid (CLA) are more sensitive to CLAinduced body fat loss than mice raised on a soy oil (SO)-containing diet. Coconut oil is deficient in essential fatty acids. However the addition of linoleic acid to a CO-containing diet did not alter the enhanced sensitivity to CLA. The objective of this s...
in surrogate pregnancies genetic parents have little opportunity for early bonding with their infants either prenatally (in utero) or during the immediate postnatal period. procedures commonly used to induce lactation include both pharmacologic and nonpharmacologic methods often in combination. studies reporting induced lactation are sparse due to the rarity of augmented lactation. here we repo...
To investigate the effects of nutritional plane and Se supply during gestation on ewe and offspring performance and body composition, 84 Rambouillet ewe lambs (age = 240 +/- 17 d, BW = 52.1 +/- 6.2 kg) were allocated to a 2 x 3 x 2 factorial arrangement of treatments. Factors included Se [adequate Se (ASe, 11.5 microg/kg of BW) or high Se (HSe, 77.0 microg/kg of BW)] initiated at breeding, nutr...
Abstract Lactation taxes mothers’ bone health, causing them to lose up 10% of their mass for milk calcium. Selective serotonin reuptake inhibitor antidepressants (SSRIs) are commonly used during pregnancy and lactation but independently decrease mass. We previously demonstrated that both maternal offspring densities were compromised by treatment with the SSRI fluoxetine throughout lactation. In...
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