نتایج جستجو برای: lactational performance

تعداد نتایج: 1050564  

Journal: :iranian journal of applied animal science 2013
e. qashqay h. amanlou m. hajilou d. zahmatkesh s.s. mousavi

thirty two multiparous holstein cows were used in a randomized block design to investigate the effects of feeding diets included two different source of nonfiber carbohydrate during the transition period on dry matter intake (dmi), lactational performance, blood metabolites and parturitional characteristics. cows received total mixed rations containing either macaroni wastes(mw) or steam-flaked...

Journal: :The Proceedings of the Nutrition Society 1989
J D Oldham N C Friggens

Variation in lactational performance comes about as a result of variation in the nature of the animal, its environment, or with time. Table 1 lists a variety of sources of variability, classified under broad headings of variation with the animal (species, breed and individual), with time and with various aspects of the environment. The list is probably not comprehensive, but even so, it contain...

Journal: :Journal of Nepal Medical Association 2003

Journal: :The British journal of nutrition 1993
N C Friggens D E Hay J D Oldham

The effect on lactational performance of replacing feed carbohydrate with fat at two different protein levels was studied. Lactating Sprague-Dawley rats with a standardized litter size of thirteen pups were allocated one of eight feeds containing either 300 or 150 g protein/kg organic matter (OM) and ranging in fat content from 100 to 550 g/kg OM from day 2 until day 14 of lactation. Daily food...

Journal: :Proceedings of the Nutrition Society 1989

2005
Nancy F. Butte Doris Howes Calloway

The effect of suboptimal maternal nutrition on lactational performance of 23 Navajo women was studied in terms of milk volume, milk composition, and infant growth. The mean milk volume produced by 10 Navajo women was 634 ± 1 13 ml/24 h after approximately 1 month of lactation. The content of protein, lactose, and lipid were within normal limits. Retinol and carotene content were 32.9 ± 15.7 and...

1999
R. H. KING M. S. TONER H. DOVE C. S. ATWOOD W. G. BROWN

The establishment of quantitative relationships between nitrogen (N) retention and energy and protein intake in breeding animals is essential to enable producers to determine the consequences of altering nutrient intake on changes in body composition, reproductive efficiency and lactational performance. Results of an experiment with pregnant gilts revealed that maximum rates of N retention occu...

Journal: :Annual review of nutrition 2000
A Prentice

Pregnancy and lactation are periods of high calcium requirement. This review highlights recent advances in our understanding of calcium and bone metabolism during human pregnancy and lactation and discusses the findings in relation to the calcium nutrition of the mother. The evidence indicates that pregnancy and lactation are characterized by physiological adaptive processes that are independen...

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