• Title, Summary, Keyword: Milk Composition

Search Result 523, Processing Time 0.032 seconds

EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND MILK COMPOSITION IN DAIRY COWS

  • Myung, K.H.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.3 no.3
    • /
    • pp.247-252
    • /
    • 1990
  • Nine Holstein cows in mid lactation period were utilized to examine the effect of recombinant bovine somatotropin (BST) of tow companies (Company A, Company B) on milk production and milk composition under the feeding conditions of Korea. Treatments were 0 (Control), 25 mg BST/day from company A (BST A) and 25 mg BST/day from company B (BST B) injected subcutaneously, once daily beginning at $200{\pm}20$ days postpartum and continuing for 28 days. Cows were fed ad libitum a total mixed diet throughout the experimental period. BST treatments increased average 4% fat corrected milk yields and milk energy output over the 28-day treatment period. However, no differences were observed in dry matter intake, gross efficiency, energy intake and percent milk energy. Although there was a tendency for increased milk fat percent, there were no differences in milk composition and yields of major milk components except for milk fat yield with BST injection. Somatic cells of all groups were also characteristic of a well managed herd. Neither mean body condition score nor body weight was significantly (p <0.05) changed before and during BST treatment. BST concentration in milk remained in the range of control animals throughout the experimental period of BST treatment. Results indicate that short-term injection of recombinant bovine somatotropin from two companies to lactating dairy cow resulted in similar increased in milk yield without alteration of major milk components or feed intake.

EFFECTS OF PHOSPHORUS AND CALCIUM ON FEED INTAKE AND YIELD AND COMPOSITION OF MILK OF HOLSTEIN COWS

  • Morse, D.;Head, H.H.;Wilcox, C.J.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.7 no.2
    • /
    • pp.231-237
    • /
    • 1994
  • Three concentrations of P (0.33, 0.43 and 0.54%) and two concentrations of Ca (0.60 and 0.97%) in ration dry matter were evaluated for effects on dry matter intake and on milk yield and composition using 24 Holstein cows. Cows were arranged in a $3{\times}2$ factorial experiment as an incomplete randomized block design with three 28-day periods. Each cow consumed at least one ration with each concentration of Ca. Dry matter intake, yield of 3.5% Fat Corrected Milk, and milk composition were not affected by concentration of P, but milk yield was greater when lowest concentration of P was fed (22.8 vs. 22.1 kg/day; p<0.07). Cows fed rations containing 0.60% Ca had greater milk (22.7 vs. 21.9 kg/day; p<0.02) and 3.5% Fat Corrected Milk yields (p<0.03) and slightly greater protein content than when fed 0.97% Ca. Dietary Ca:P ratios between 1.1:1 and 2.9:1 had no effect on dry matter intake, milk yield, or composition. Concentrations of P in plasma were within the normal range for all rations. Because cows had high dry matter intake, mean daily intakes of both P and Ca were greater than required for their level of milk yield.

Effects of Black Sugar Supplementation on Dry Matter Intake, Milk Yield, and Milk Composition in Holstein Dairy Cow

  • Seng, Tongheng;Lee, Sang Moo;Kim, Eun Joong
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.33 no.3
    • /
    • pp.213-218
    • /
    • 2013
  • This study was conducted to investigate the effects of supplementing additional sucrose, in the form of black sugar (BS), into the diet of Holstein dairy cows on dry matter intake (DMI), milk yield, and milk composition. Eight Holstein dairy cows ($741{\pm}65.8kg$ body weight) were divided into two groups, including the control and BS groups. Animals in the control group were offered a total mixed ration (TMR) ad libitum, and the BS group was offered TMR with 300 g of BS/head/d. After two weeks of adaptation period, the animal performance, including DMI, milk yield and milk composition, was measured. Cows supplemented with BS appeared to consume more feed than that by the controls (i.e., 17.08 and 18.28 kg/d for the control and BS groups, respectively). However, there were no significant differences between treatments. Milk yield or milk composition, such as milk fat, milk protein, lactose, solids-non-fat, total solids and pH, did not differ between treatments. However, there was a significant difference (p<0.05) in the concentration of milk urea nitrogen (MUN). The MUN concentration of the BS group was approximately 15% lower than that of the control group (i.e., 18.75 vs. 16.05 mg/dL for the control and BS groups, respectively), which suggests improved nitrogen metabolism in the animals. The somatic cell count was numerically lower in the cows of the BS group compared to those in the control group. However, a significant difference was not noted due to the substantial amount of variation among cows. In terms of the trace mineral composition for milk, the concentration of Cu from BS animals was higher (p<0.05) than that of the control animals. In summary, supplementing the diets of dairy cows with BS marginally affected animal performance and improved nitrogen metabolism. The level of supplementation and other factors, such as animal variation were discussed.

Lipid and Fatty Acid Composition of Korean Breast Milk and Infant Formula (모유와 유아용 조제분유의 지질 및 지방산 조성)

  • 임현숙
    • Journal of Nutrition and Health
    • /
    • v.27 no.6
    • /
    • pp.563-573
    • /
    • 1994
  • This study was conducted to compare the lipid content and fatty acid composition of the Korean breast milk produced at 1, 2 and 3 months postpartum with the infant formula produced in Korea. The content of total lipids of the breast milk was low compared with the other data of Korean as well as foreign breast milk, and the content tended to reduce during the progress of lactation. The composition of fatty acids of the breast milk was characterized by low saturated fatty acids(SFA) and high $\omega$3 series of polyunsaturated fatty acids (PUFA), especially 20:5 and 22:6, so the P/S and $\omega$6/$\omega$3 rations were high. The formulas had more total lipids, triglycerides(TG) and phospholipids and less cholesterol(CHOL) and free fatty acids than the breast milk. The cholesterol content of the formulas was around 50% of that of the breast milk, so the CHOL/TG ratio was low. Although the formulas varied in fatty acid composition, the formulas had more SFA and $\omega$6 series of PUFA, but less monounsaturated fatty acids and $\omega$3 series of PUFA than the breast milk. This study shows that there are some differences in lipid content and fatty acid composition between breast milk and infant formula. Therefore, further studies needed to investigate the physiological effect of this difference on lipid metabolism of infants.

  • PDF

A Comparative Study on the Composition of Preterm and Fullterm Human Milk in Colostrum -II. Comparison of the Total Lipid, Total Cholesterol, and Vitamin E Contents and Fatty Acids Comparison in Colostrum from Mothers of Premature and Fullterm Infants- (조산모와 정상모의 초유성분에 관한 비교 연구 -제2보 : 조산모와 정상모 초유의 총지질, 총콜레스테롤 및 비타민 E 함량과 총지방산 조성에 관한 비교-)

  • 이윤욱
    • Journal of Nutrition and Health
    • /
    • v.28 no.2
    • /
    • pp.137-143
    • /
    • 1995
  • In this study, lipid composition of milk obtained in colostrum from 22 mothers delivering preterm infants and 17 mothers delivering term infants was analyzed. Fatty acid composition and vitamin E content were analyzed as well as the concentrations of total lipids in preterm and fullterm milk. Lipid and cholestol concentrations were higher in the fulltrm milk than preterm milk. PUFA and P/S ratio in preterm milk were higher than those in fullterm milk. On the other hand, SFA and MUFA contents were higher in the fullterm milk. Vitamin E which is related to PUFA concentration in colostrum was also higher in the preterm milk than fullterm milk.

  • PDF

Effects of Fish Oil Supplementation to Korean Lactasting Women -II. The Effects on Lipid Content and Fatty Acid Composition of Breast Milk- (한국인 수유부에 어유의 보충 급여 효과에 관한 연구 - II. 모유의 지질 농도 및 지방산 조성에 미친 영향-)

  • 임현숙
    • Journal of Nutrition and Health
    • /
    • v.29 no.2
    • /
    • pp.188-191
    • /
    • 1996
  • This study was undertaken to determine the effects of fish oil supplementation with low dose on the lipid content and fatty acid composition of breast milk. Among 18 lactating women who were exclusively breast-fed their babies, 6 were in control group and 12 were in fish lil groups. The subjects in fish oil groups were supplemented with 1.96g/d or 3.92g/d of fish oil for 2 weeks from 10 to 12 weeks of postpartum. All subjects consumed their usual diet at home. Breast milk samples were collected at the final day of experiment. By fish oil supplementation, the concentrations of triglyceride, cholesterol, free fatty acid and phospholipid as well as total lipid in breast milk tended to increase, but not significant. There was no dose-dependent response. The fatty acid composition of breast milk was not changed by fish oil supplementation. These results suggest that low dose of fish oil supplementation may increase of lipid content, but does not affect on the fatty acid composition of breast milk.

  • PDF

Milk Production, Milk Composition, Live Weight Change and Milk Fatty Acid Composition in Lactating Dairy Cows in Response to Whole Linseed Supplementation

  • Suksombat, Wisitiporn;Meeprom, Chayapol;Mirattanaphrai, Rattakorn
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.26 no.8
    • /
    • pp.1111-1118
    • /
    • 2013
  • The objective of this study was to determine the effects of whole linseed supplementation on performances and milk fatty acid composition of dairy cows. Thirty six Holstein Friesian crossbred lactating dairy cows were blocked by milking days first and then stratified random balanced for milk yields and body weight into three groups of 12 cows each. The control group received 300 g of palm oil. The second group was supplemented with 344 g/d of top-dressed whole linseed plus 150 g of palm oil and the third group was supplemented with 688 g/d of top-dressed whole linseed. All cows also received ad libitum grass silage (Brachiaria ruziziensis), had free access to clean water and were individually housed in a free-stall unit and individually fed according to treatments. Residual feeds were collected on 2 consecutive days weekly and at the end of the experiment. Feed samples were pooled to make representative samples for proximate and detergent analyses. Daily milk yields were recorded. Milk samples were collected on 2 consecutive days weekly. Live weights were recorded at the start and at the end of the experiment. Milk samples were taken on d 56 of the experiment and subjected to milk fatty acid composition. The results showed no statistical significant differences in intakes, live weight change, milk yields and milk compositions, however, C18:1, C18:3 and unsaturated FAs were increased while saturated FAs were reduced by whole linseed supplementation. It is recommended that the addition of 300 g/d oil from whole linseed could be beneficial to lactating dairy cows in early lactation.

Effect of protected Methionine and Lysine on Milk yield and Composition in Holstein Dairy Cow under Different Dietary Crude Protein Levels : Meta-analysis (사료 내 수준별 조단백질 조건에서 보호메티오닌과 보호라이신의 사료첨가 급여가 착유우유생산성 및 유성분에 미치는 영향 : 메타분석)

  • Choi, Nag-Jin
    • Korean Journal of Organic Agriculture
    • /
    • v.24 no.4
    • /
    • pp.957-967
    • /
    • 2016
  • The present study was conducted to investigate effect of dietary protected amino acid on milk yield and composition in dairy cow using meta-analysis. Total 21 research papers were employed in analysis, and mixed model was used for the analysis of effects. Effect of protected methionine (PM) and combination of protected methionine and lysine (PML) were investigated under two different levels of dietary crude protein (CP, <18% and >18%). For performance of dairy cow, milk yield, milk composition including milk fat and protein content and yield and 4% FCM (fat corrected milk) production were used for analysis. In case of milk yield, a trend of increment was found at PM supplementation at low CP (P=0.055). However, the effect of PM at high CP was detected as not significant (P>0.05). In case of milk protein, inclusion of PM at low CP showed significant decrement (P<0.05). However, there was no significant effect of MP on milk protein at high CP (P>0.05). Supplementation of MP at high CP level showed significant increment of milk fat (P<0.05). MP supplementation represented significant increment of 4% FCM production (P<0.05) regardless of dietary CP levels. Effects of PML on milk yield and composition at both of low and high dietary CP were not significant in this study. However, it seem to be that there was a possible positive effect of MPL application at high dietary CP on performance of dairy cow.

Effect of supplementary glycerin on milk composition and heat stability in dairy goats

  • Thoh, Deela;Pakdeechanuan, Patcharin;Chanjula, Pin
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.30 no.12
    • /
    • pp.1711-1717
    • /
    • 2017
  • Objective: This experiment was studied the effects of various levels of crude glycerin (CG) in dairy goat diet on daily intake, milk yield, milk composition, some physical properties and some quality changes of goat milk after sterilization. Methods: Twelve 75% Saanen dairy goats (body weight = $49{\pm}3kg$; days in milk = $60{\pm}12d$) were randomly assigned in a completely randomized design to evaluate the effects of three experimental diets consisting of 0%, 5%, and 10% CG (dry matter basis) which were formulated to meet or exceed the nutrient requirements of goats. Experimental dairy goats were evaluated for feed and milk yield. Milk samples were analyzed for their composition, including fatty acids, casein profile, fat globule size, and color, and were sterilized to evaluate milk heat stability. Results: There were no significant differences between 0% and 5% CG treatments infeed. Increasing CG supplementation from 0% to 5% increased milk yield from $2.38{\pm}0.12$ to $2.64{\pm}0.23kg/goat/d$. In addition, milk samples from 5% CG treatment had the highest total solids, fat content and lactose content, and largest fat globule size. Increasing CG to 10% resulted in a decrease in milk fat. After sterilizing at $116^{\circ}C$, $F_0=3min$, goat milk samples from 5% CG treatment had slightly higher sediment content and comparatively higher degree of browning. Conclusion: Considering milk yield, milk fat content and quality of sterilized milk, 5% CG supplementation in a total mixed ration has a potential for implementation in dairy goats.

Comparison of Fatty Acid Composition of Phospholipids from Human Mature Milk, Infant Formulas and Market Milk. (인유, 조제 분유 및 시유의 인 지방질의 지방산 조성의 비교)

  • Yoon, Tai-Heon;Im, Kyung-Ja
    • Journal of the Korean Applied Science and Technology
    • /
    • v.2 no.1
    • /
    • pp.33-36
    • /
    • 1985
  • The fatty acid composition of Phospholipids from human mature milk, modified milk formula and market milk were analyzed by gas-liquid chromatography. The levels of 8:0, 10:0, 19:0, 20:0 and 22:0 were significantly higher in modified milk formula than in human milk. The levels of 14:0 and 16:0 were significantly lower in modified milk formula than in human milk. Modified milk formula had a higher $18:2{\omega}6$ content than human milk (17.9 versus 7.9%). The metabolites of the ${\omega}$9-, ${\omega}$6-$ and ${\omega}$3-series showed lower levels in modified milk formula than in human milk. The fatty acid composition of phospholipids from modified milk formula was similar to that of market milk.