• Journal of Nutrition and Health
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• v.24 no.2
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• pp.77-86
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• 1991

Changes in total lipid content. total cholesterol content and fatty acid composition of human milk were investigated longitudinaly from 2-5 days to 12 weeks postpartum Milk samples were collected from 19 Korean lactating women at 2-5 days and at 1. 2. 4. 6. and 12 weeks postpartum. The obtained results were as follows : On average the daily energy intake protein intake and fat intake of Korean lactating women was 1812 kcal 72.5g and 29.8g respectively. The composition ratio of energy consis-ting of protein fat and carbohydrate was 16:15:69 The total lipid content increased from 1.39g/이 at 2-5 days to 2.86g/dl at 12 weeks ; while the total cholesterol concentration (mg/g) decreased significantly with time following postpartum. The total unsaturated fatty acids content was higher in colostrum than in mature milk. and the total saturated fatty acids were higher in mature milk. The average DHA content was 0.55% and the P/S ratio of human milk lipids was 0.37.

• Asian-Australasian Journal of Animal Sciences
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• v.18 no.3
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• pp.345-349
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• 2005

A study was conducted to determine the effect of feeding chopped whole sugar cane compared to corn silage on performances of dairy cows during the dry season. Twenty four Holstein Friesian crossbred (>87.5% Holstein Friesian) lactating dairy cows in mid lactation; averaging 16.5${\pm}$2.0 kg of milk, 121${\pm}$22 days in milk, 54.5${\pm}$4.5 months old and 440${\pm}$31 kg live weight, were stratified for milk yield, days in milk, age, stage of lactation and body weight, and then randomly allocated to two treatment groups (12 cows in each group). The first group was fed corn silage together with commercial concentrate while the second group was fed chopped whole sugar cane together with commercial concentrate. All cows consumed similar DM, however, cows on corn silage consumed more CP while cows on chopped whole sugar cane consumed more $NE_{LP}$. No significant differences in performances between the two groups were observed except for final live weight and body weight change. Cows on chopped whole sugar cane showed higher final live weight and gained more weight than cows on corn silage. The present study clearly indicates that chopped whole sugar cane can be fed to lactating dairy cows, while giving similar milk yield to corn silage.

• Asian-Australasian Journal of Animal Sciences
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• v.15 no.7
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• pp.982-985
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• 2002

A study was carried out to determine glucose kinetics, nutrient balance and milk production of lactating Etawah crossbred goats. The animals (27.2 to 29.1 kg BW) were randomly divided into four levels of dietary treatment groups: the first group R1 received 100% (3 kg) fresh king grass (Penisetum purpuroides), the second group R2 received 75% king grass and 25% king grass silage prepared with chicken manure, the third group R3 received 50% king grass and 50% silage, and the fourth group R4 received 100% silage. In addition to the roughage, each group received 800 g of concentrate (CP 14.77% of DM; 17.26 MJ/kg). Animals fed king grass silage made with chicken manure were found to be superior to the group fed king grass alone. Glucose kinetics and retained energy were significantly affected. Calculations showed that glucose requirements for maintenance and milk production can be met for the groups with high levels of silage (R3 and R4). The values of glucose flux were in the range of 2.52 to 4.50 mg/min.kg $BW^{0.807}$ which are lower, but close to, the values for the temperate lactating dairy cow. The present glucose flux value for the lactating Etawah crossbred goat is higher than the previous value published from this laboratory.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.4
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• pp.509-515
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• 2016

Twenty Ardi lactating goats were used to investigate the effect of substituting 10%, 15%, and 20% of concentrate feed with date pits on milk production, composition, and blood parameters. Four isocaloric and isonitrogenous dietary treatments were used. Four levels (0% [control], 10%, 15%, and 20%) of date pits were used to replace concentrate feed. The forages to concentrate ratio used was 60 to 40. Dry matter intake (DMI) of goats fed diets containing 10% and 15% date pits was significantly (p<0.05) higher than those fed diets containing 0% and 20%. However, goats fed a diet containing 20% date pits were significantly (p<0.05) lower in DMI compared to those fed control diet. The protein percent was significantly higher for goats fed control diet compared to the other dietary treatments. Total solids percent was significantly the lowest for goats fed diet supplemented with 10% date pits. Goats fed a diet containing 20% date pits was significantly (p<0.05) higher in the total protein compared to those fed a diet containing 10%. In addition, goats fed a diet containing 15% date pits exhibited no significant differences in the total protein percent compared to those fed a diet containing 20% date pits. Triglyceride was significantly higher for goats fed diets containing 10% and 20% date pits compared to those fed 15% date pits. Results obtained in the present study suggest that date pits can be added up to 20% of the concentrate feeds into lactating Ardi goat diets without negative effects on their productive performance.

• Journal of Nutrition and Health
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• v.32 no.1
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• pp.75-82
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• 1999

In order to investigate the longitudinal changes on zinc secretion of lactating women and zinc intake of breast-fed infants, we examined 20 lactating women(10 primipare and 10 multipare) and their infants during the first 90 days postpartum. We measured the consumed volume of human milk by test-weighing method and zinc concentration by atomic absorption spectophotometry after wet digestion. Weight gain of infants was -5.7, 54.1, 46.3, 42.0 and 32.3g/day at 7, 15, 30, 60 and 90 days postpartum, respectively. The secretion volume of human milk was 527, 608, 724, 841 and 798g/day respectively. The consumed volume of human milk of breast-fed infants was 432, 503, 603, 715 and 715g/day. The intake level of breast milk to secretion volume reached 85.0% in average. The zinc concentration of the milk was 4.29, 3.32, 2.52, 1.62 and 1.18mg/l, and the zinc intake of breast-fed infants was 1.80, 1.69, 1.45, 1.15 and 0.70mg/day. Zine intake per body weight of infants averaged 0.32mg/kg/day during the first 90 days postpartum. The average zinc intake of breast-fed infants was 1.36mg/day, which is 27.2% of the recommended daily allowance for 0-4-month-old infants.

• Asian-Australasian Journal of Animal Sciences
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• v.15 no.2
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• pp.205-208
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• 2002

The use of chopped sugarcane stalk (CSS) as a roughage for lactating cows was examined using four Holstein crossbred cows in a private dairy farm in Khon Kaen, Thailand, in comparison with rice straw (RS), which is the conventional roughage in the dry season in the region. Cows were subjected to the following two dietary treatments: Diet 1) RS with commercial concentrate feed, and Diet 2) CSS and RS with commercial concentrate feed. The diet was switched over every 3 weeks. The amount of concentrate was determined by the experience of the owner of the cows. RS and CSS were given ad libitum. There was no difference in milk production between two groups, although the total DMI was less in cows fed CSS. Solid-not-fat (SNF) content in milk was significantly higher in the cows given CSS. The NEFA content was significantly lower in the animals given CSS, which suggested that cows given only RS as roughage would be suffering from energy malnutrition. Therefore, it was considered that CSS feeding improved energy supply, which resulted in higher SNF in milk. In the nutritional point of view, the present study clearly showed CSS can be used as a roughage for dairy cows in the dry season.

• Asian-Australasian Journal of Animal Sciences
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• v.14 no.11
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• pp.1549-1554
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• 2001

The application of rumen undegradable intake protein (UIP) on lactating dairy goats was studied. Thirty 2-year-old lactating dairy goats were selected and assigned to dietary treatments begun from the third week to the fourth month postpartum. Experimental diets were formulated into three, low (32% CP), med (35% CP) and high (38% CP), iso-nitrogenous (16% CP) and iso-energetic ($NE_L$ 1.68 Mcal/kg) UIP levels. Results showed that feed intake was not significantly different among the treatment groups. The milk yield in the High UIP group (3.17 kg) was significantly higher than the med (2.95 kg) and low UIP (2.45 kg) groups (p<0.05). The milk compositions, milk fat, milk lactose and milk solids-non-fat (SNF) showed no significant differences among the three treatment groups. The milk protein however was significantly (p<0.05) lower in the low UIP than in the other treatment groups. The milk urea-N was significantly (p<0.05) higher in the low UIP than in the other treatment groups. The mean serum aspartate amino transferase (AST), urinary-N and total protein concentrations were significantly (p<0.05) lower in the high and the med UIP groups than in the low UIP group.

• Asian-Australasian Journal of Animal Sciences
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• v.24 no.4
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• pp.479-484
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• 2011

The study was conducted on 20 Holstein X Sahiwal cross bred dairy cows, with an average milk production of $2,752{\pm}113.79$ liters in $284{\pm}5.75$ days during a single lactation, that were divided in to two groups of 10 animals. We investigated the oxidative stress and antioxidant status during the transition period in dairy cows. In this study, plasma level of MDA was considered as an indicator of lipid peroxidation and SOD, catalase, GSH and GSHPx as antioxidants. The lipid peroxidation was significantly (p<0.001) higher in cows during early lactation as compared to the cows in advanced pregnancy. A significant positive correlation (r = +0.831, p<0.01) was determined between MDA and catalase in early lactating cows. In early lactating cows, blood glutathione was significantly lower than in advanced pregnant cows. However, early lactating cows showed non-significant negative correlation for all antioxidant enzymes with lipid peroxidation. In conclusion, dairy cows seemed to have more oxidative stress and low antioxidant defense during early lactation or just after parturition than advanced pregnant cows, and this appears to be the reason for their increased susceptibility to production diseases (e.g. mastitis, metritis, retention of fetal membranes etc.) and other health problems.

• Journal of Veterinary Clinics
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• v.11 no.2
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• pp.553-560
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• 1994

This experiment was conducted to evaluate the feed value of Macol meal, which is one of the byproducts from the extraction of liquid syrup from barley grain, on lactating dairy cows. All of the lactating dairy cows feeding in eight dairy farms were used in feeding experiment and fed concentrates plus Macol meal 5Kg as wet basis. The milk yields and milk fit during the periods of 10 months were investigated and blood picture, blood chemistry and diseases occuring frequency before and after feeding Macol meal were analyzed. The results obtained were as follows ; 1. In the proximate compositions, the contents of moisture, crude protein, crude fat, crude fiber, crude as and nitrogen free extracts was 68.8%, 7.43%, 1.04%, 7.08%, 1.56% and 14.09% respectively. On the other hand, the contents of NDF, ADF and cellulose was 36.68%, 35.71% and 10.85%, as dry matter basis, respectively. 2. The daily milk yield per head was 22.84kg during two months before feeding Macol meal and 23.89 kg during the periods of ten months after feeding Macol meal. 3. The blood picture and blood chemistry were not affected by feeding Macol meal. 4. The diseases occuring frequency were not significantly affected by feeding Macol meal. from the results of this experiment it could be concluded that Macol meal can be used in lactating dairy cows rations without any adverse effects.

• Journal of The Korean Society of Grassland and Forage Science
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• v.35 no.3
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• pp.217-224
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• 2015

This study aimed to investigate the effects of Dandelion (Taraxzcum coreanum) supplementation on milk yield, milk composition and blood characteristics in lactating dairy cows. Eight lactating dairy cows were divided into two groups (control: TMR supplementation, treatment: TMR with Dandelion supplementation). The milk yield, milk fat, lactose, solids not fat (SNF) and somatic cells counts (SCC) were not significantly different between the control group and the treatment group, whereas milk protein, milk urea nitrogen (MUN) and free fat acid (FFA) were significantly higher in the treatment group compared to the control (p<0.05). The blood components of the treatment group were compared with those of the control group and only aspartate aminotransferase (AST) appeared significantly high (p<0.05). The other blood components were not significantly different in the two groups. Blood corpuscle components in the groups were not significantly different. Especially, all blood corpuscle components in the treatment group were within the normal range. However, the white blood cells (WBC), lymphocytes (LYM) and hematocrits (HCT) in the control group exceeded the normal range. Based on the above results, the addition of Dandelion to feed increased milk protein, MUN and FFA, but did not significantly affect the composition of the blood and corpuscle in Holstein milking cows.