Effect of formaldehyde-treated sunflower meal on the milk production of grazing dairy cows

1992 ◽  
Vol 43 (2) ◽  
pp. 379 ◽  
Author(s):  
BA Hamilton ◽  
JR Ashes ◽  
AW Carmichael
Keyword(s):  
Protein Content ◽  
Milk Production ◽  
Control Group ◽  
Sunflower Meal ◽  
Protein Meal ◽  
Treatment Groups ◽  
Formaldehyde Treatment ◽  
Temperate Pastures ◽  
Grazing Dairy Cows ◽  
Friesian Cows

Forty-five Friesian cows grazing kikuyu pastures in the first 3 months of lactation were fed pasture alone or pasture supplemented with cracked barley or cracked barley mixed with sunflower meal untreated or treated with 0.5 or 0.7% formaldehyde. All supplements were isoenergetic and differed only in the level of formaldehyde treatment of the protein meal. The experimental rations were given for 8 weeks. The milk production of cows fed sunflower meal treated with 0.5% formaldehyde was significantly higher (P.< 0.05) than that of cows fed either barley or untreated sunflower meal and it was suggested that the level of formaldehyde added to protein meals may be important for optimum responses. The feeding of untreated sunflower meal did not significantly increase the protein content of milk above that of the pasture-fed control group. The feeding of barley and sunflower meal treated with both levels of formaldehyde significantly increased the protein content of milk above that of controls (P.< 0.05). The fat content of milk from cows receiving supplements did not differ significantly between treatment groups, but all were significantly lower than from cows in the control group fed pasture (P.< 0.05). All supplemented groups gained weight over the period of the experiment whereas the pasture-fed control group lost weight. Pasture intake of individual cows was estimated with controlled release chromic oxide capsules. The rate of substitution of pasture by supplement was 0-16 kg/kg concentrate eaten and this is below the rates observed for cows grazing temperate pastures.

Low-glucosinolate rapeseed meal as a protein source for milk production

1988 ◽  
Vol 1988 ◽  
pp. 76-76 ◽  
Author(s):  
Isobel Vincent ◽  
R. Hill
Keyword(s):  
Protein Content ◽  
Milk Production ◽  
Rapeseed Meal ◽  
Protein Supplement ◽  
Grass Silage ◽  
Group A ◽  
Additional Protein ◽  
Soyabean Meal ◽  
The Uk ◽  
Friesian Cows

Low-glucosinolate rapeseed meal (<20 μmol/g) is likely to replace the high-glucosinolate meal currently produced in the UK, and in this experiment the use of low-glucosinolate rapeseed meal (RSM) as the sole protein supplement in a compound feed for milk production in cows was assessed. There were three compound concentrate feeds of similar energy and protein content, 0% RSM (group A), 15% RSM (B) and 30% RSM (C). The additional protein in diets A and B was provided as soyabean meal (SBM).Eighteen Friesian cows were divided into three groups, balanced with regard to previous yield and number of lactations, and three weeks after calving were given one of the compound feeds in a 3x3 changeover experiment; each of the three feeding periods was four weeks. Barley meal was given as a parlour feed, 1 kg air dry at each milking, and the compound concentrate and grass silage were given at Broadbent-Calan gates in quantities related to expected milk yield.

Effect of timing of protein supplementation on the performance of lactating dairy cows

2005 ◽  
Vol 45 (4) ◽  
pp. 337
Author(s):  
B. C. Granzin
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Protein Supplementation ◽  
Net Energy ◽  
Maize Silage ◽  
Holstein Friesian ◽  
Grazing Dairy Cows ◽  
And Control ◽  
Friesian Cows

Two experiments were undertaken to determine the effect of timing of protein supplementation on performance of grazing, lactating Holstein–Friesian cows fed maize silage and grain-based concentrate. In experiment 1, 36 cows were fed 0.8 kg DM/day of solvent-extracted cottonseed meal (CSM) either as 1 meal at 1200 hours with maize silage (CSM 1200) or at 1530 hours with concentrate (CSM 1530), or in 2 meals at 0600 and 1530 hours with concentrate (CSM 600 + 1530). In experiment 2, 36 cows were either fed no CSM (control) or fed 1.0 kg DM/day as either CSM 1200 or CSM 600 + 1530. In experiment 1, daily yields of 4% fat-corrected milk (FCM) and milk fat for CSM 600 + 1530 were significantly higher than for CSM 1530 with respective means of 22.8 v. 20.7 L and 895 v. 804 g. Daily yields of FCM and milk fat for CSM 1200 were intermediate (21.7 L and 841 g/cow, respectively). A similar trend for daily protein yield per cow was noted (712, 695 and 666 g for CSM 600 + 1530, 1200 and 1530, respectively). In experiment 2, milk yield differed numerically between CSM 600 + 1530 and other treatments, with means (± s.e.d.) of 24.7 ± 0.78, 22.9 ± 0.78 and 22.9 ± 0.78 L/cow.day for CSM 600 + 1530, CSM 1200 and control, respectively. Mean (± s.e.d.) net energy requirements for milk production and liveweight change tended to be lower for the control (68 ± 3.6 MJ/cow.day) as opposed to CSM 600 + 1530 (79 ± 3.6 MJ/cow.day) and CSM 1200 (76 ± 3.6 MJ/cow.day). Cumulative time where rumen degradable nitrogen:rumen degradable dry matter was less than 22 g/kg were 2, 2 and 3 h for CSM 600 + 1530, CSM 1200 and CSM 1530, respectively, in experiment 1, and 6, 4 and 2 h for the control, 1200 and CSM 600 + 1530, respectively, in experiment 2. No differences in rumen ammonia-N concentrations were noted between treatments in experiment 1. In experiment 2, a significantly lower mean (± s.e.d.) rumen ammonia-N concentration was recorded for the control at 1530 hours (62 ± 14.1 mg/dL) in comparison to CSM 600 + 1530 (114 ± 14.1 mg/dL) and CSM 1200 (119 ± 14.1 mg/dL). These experiments show that for grazing dairy cows supplemented with maize silage and grain-based concentrate, feeding a daily aliquot of CSM as 2 meals at 0600 and 1530 hours rather than 1 meal at 1200 or 1530 hours improves milk production.

The effect of delaying the introduction of concentrates on the summer milk production of hay-fed dairy cows

1969 ◽  
Vol 9 (36) ◽  
pp. 66
Author(s):  
JC Radcliffe
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Experimental Period ◽  
Percentage Composition ◽  
Treatment Groups ◽  
Basal Ration ◽  
Friesian Cows

From November 23, 1965, concentrates were introduced successively at two-week intervals to five treatment groups of grade Friesian cows that were being fed a basal ration of cereal hay in the paddock. The yield of milk, butterfat, solids-not-fat, and protein rose significantly as the supplements were introduced but almost no significant effect of concentrate feeding was observed on the weekly percentage composition tests of the milk. A comparison of the total covariance corrected yield results for the experimental period from November 23, 1965, to March 15, 1966, showed that the group of cows receiving concentrates throughout produced 30 per cent more milk, and 29 per cent more solids-not-fat, but only 24 per cent more protein and butterfat than the group receiving concentrates from January 18, 1966. However, the additional milk production would be uneconomic where milk is purchased on a butterfat basis.

scholarly journals The sequential feeding of growing chickens

1975 ◽  
Vol 34 (1) ◽  
pp. 113-118 ◽  
Author(s):  
R. M. Gous ◽  
J. J. Du Preez
Keyword(s):  
Body Weight ◽  
Food Intake ◽  
Fish Meal ◽  
Experimental Period ◽  
Sole Source ◽  
Control Group ◽  
Sunflower Meal ◽  
Fasting Period ◽  
Treatment Groups ◽  
Feeding And Fasting

1. Male chickens, 1 week old, were fed alternately for 6 or 12 h periods with diets complementary in their amino acid composition. The isonitrogenous, isoenergetic diets were based on fish meal or sunflower meal as the sole source of protein, or fish meal–sunflower meal (40:60, w/w); each diet contained 120 g crude protein/kg. Other groups of chickens were given these diets ad lib.Net protein utilization (NPU) values obtained after a 1-week experimental period indicated that sequential feeding for both 6 and 12 h resulted in significantly improved responses compared with chickens given the same diets ad lib. These results suggested that the two protein sources, although provided at separate times, could complement each other.2. In certain treatments there was a 6 or 12 h fasting period between feeding periods to reduce the effect of nutrients from the previous period.3. For alternate feeding and fasting periods of 6 h with the combined diet, food intake and gain in body-weight were both significantly reduced compared with the corresponding values for the combined diet fed ad lib. The NPU value was virtually the same for both treatments. For 12 h periods of alternate feeding and fasting the gain in body-weight was only just significantly lower than that for the control group (combined diet fed ad lib.), but the NPU value was highly significantly better than that for the control group.4. For the treatments which included 6 and 12 h fasting periods between the two singleprotein diets, the food intake and gain in body-weight were significantly lower compared with the treatment groups given alternate feeding and fasting periods of either 6 or 12 h with the combined diet. The NPU values for the two groups given 12 h alternate feeding and fasting periods differed significantly, whereas the NPU values for the two groups given 6 h feeding and fasting periods were the same.

Milk production and composition, and methane emissions from dairy cows fed lucerne hay with forage brassica or chicory

2016 ◽  
Vol 56 (3) ◽  
pp. 304 ◽  
Author(s):  
S. R. O. Williams ◽  
P. J. Moate ◽  
M. H. Deighton ◽  
M. C. Hannah ◽  
W. J. Wales ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Production ◽  
Perennial Grass ◽  
Milk Fatty Acids ◽  
Ch4 Emissions ◽  
Holstein Friesian ◽  
Grazing Dairy Cows ◽  
Diet Type ◽  
Friesian Cows

Forage brassica and chicory crops provide an alternative to perennial grass pastures as a forage supply for grazing dairy cows during summer, but there is little information about their effects on milk production and methane (CH4) emissions. Thirty-two Holstein–Friesian cows were fed for 10 days on a diet of lucerne cubes (750 g/kg DM) and grain (250 g/kg DM) (CON) or diets in which forage brassica (410 g/kg DM, FBR) or reproductive-stage chicory (410 g/kg DM, RCH) were offered with lucerne cubes (340 g/kg DM) and grain (250 g/kg DM). Cows offered the FBR diet produced more energy-corrected milk (25.4 kg/day) than did cows offered the CON diet (22.7 kg/day, P = 0.001), even though DM intake was not different for cows between the two groups (20.6 kg/day on average). In contrast, cows offered the RCH diet produced less energy-corrected milk (19.3 kg/day) than did cows in the other two groups (P = 0.001), reflecting the lower DM intake by cows offered the RCH diet (17.7 kg/day, P < 0.01). Methane yield (g CH4/kg DMI) was lower (P < 0.01) on the CON (21.0) and FBR (20.5) diets than on the RCH diet (26.1). Methane intensity (g/kg energy-corrected milk) was different (P < 0.01) for all diets, with CON (19.4) being intermediate, FBR (17.3) lowest and RCH (23.8) the greatest. Diet type was associated with differences in the proportions of only a small number of specific milk fatty acids, and differences in proportions of specific fatty acids were not related to CH4 emissions.

scholarly journals ADDITION OF WHITE SHRIMP (Penaeus merguiensis) HEAD EXTRACT TO INCREASE PROTEIN CONTENT IN SHRIMP STICKS

2016 ◽  
Vol 2 (1) ◽  
pp. 15-21
Author(s):  
Rabiatul Adawyah
Keyword(s):  
Treatment Group ◽  
Protein Content ◽  
White Shrimp ◽  
Control Group ◽  
Treatment Groups ◽  
Randomized Design ◽  
Increase Protein Content ◽  
Shrimp Head ◽  
The One ◽  
Shrimp Heads

The objective of this study was to obtain a proper ratio between the volume of water and the weight of shrimp heads in order to increase the protein content in shrimp sticks. The design used in the study was a completely randomized design (CRD) with treatment groups of 1:1, 1:2, and a control group without the addition of shrimp head extract. Water content, protein content, ash content and organoleptic test were the parameters measured. The results of the study show that the addition of white shrimp head extract in the treatment group with a 1: 1 ratio produced shrimp sticks with a protein content of 12.22%; in the treatment group with a 1: 2 ratio 13.44%; and in the control group without the addition of shrimp head extract only 5.54%. The addition of shrimp head extract also produced more preferred flavor compared to the one without the addition of the extract.

The herbage intake and milk production of strip- and zero-grazed dairy cows

1962 ◽  
Vol 59 (1) ◽  
pp. 95-103 ◽  
Author(s):  
J. F. D. Greenhalgh ◽  
K. V. Runcie
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Energy Cost ◽  
Live Weight ◽  
Fat Content ◽  
Treatment Groups ◽  
Herbage Intake ◽  
Free Grazing ◽  
The Difference ◽  
Friesian Cows

1. A group of four Ayrshire and four Friesian cows was strip grazed on a cocksfoot-dominant sward while a second, similar group was zero grazed on herbage cut from the same field. The experiment consisted of five 10-day periods, two in the spring and three in the summer.2. The intakes of all cows were calculated from values for faeces output, estimated by using chromic oxide, and for herbage digestibility, estimated from faeces nitrogen. The regressions used for predicting digestibility were determined with the zero-grazed cows, digestibility coefficients being calculated from measured intake and estimated faeces output values.3. Over the whole experiment there was no difference between treatments in milk yield, herbage digestibility or intake. The solids-not-fat content of the milk of strip-grazed cows was significantly higher than for zero-grazed cows.4. In both spring and summer the increasing maturity of the herbage caused declines from one period to the next in herbage digestibility and intake, and there were declines also in milk yield and solids-not-fat content. The declines were greater for the zero-grazed cows, apparently because they, unlike the strip-grazed animals, were unable to select the more digestible and palatable components of mature herbage. The effects of selective grazing on digestibility, however, were evidently small, for the difference in between the treatment groups was never greater than one unit.5. The estimated energy intakes of both treatment groups corresponded quite well with their theoretical requirements of energy for maintenance, milk production and live-weight gain, and there was no evidence of the energy cost of free grazing being appreciably greater than that of zero grazing.

Feed supplement based on endo- and exometabolites B. subtilis as stimulator of milk production of cows

2020 ◽  
pp. 19-22
Author(s):  
Sergey V. Malkov ◽  
◽  
Aleksandr S. Krasnoperov ◽  
Antonina P. Poryvaeva ◽  
Natalya A. Vereshchak ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Protein Content ◽  
Milk Production ◽  
Blood Parameters ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Physiological Status ◽  
Milk Productivity ◽  
Experimental Group

Promising direction in ensuring food security and independence of Russia is the widespread use and study of new feed additives of probiotic action. Today, probiotic preparations are widely used in dairy farming. They support the positive microbial balance of the gastrointestinal tract and stimulate the activity of the digestive, motor-evacuation, hormonal and immune systems. Authors studied the efficiency of the composition of 2 strains of Bacillus subtilis during 14 days after calving (1 experimental group) and 14 days before calving and 14 days after calving (2 experimental group) in the technology of milk production and improving its quality. In the process of conducting scientific and industrial experience, modern research methods were used that were able to obtain high-quality and most informative data on the processes occurring in the body. Analysis of the results of hematological blood parameters of animals of all groups confirmed the physiological of recovery of the cow's body in the postpartum period, but with different degrees of intensity. Animals of the experimental groups reached peak milk production. By the end of the third month in group 1, milk productivity was 28.94±6.84 kg, in group 2 - 32.17±3.33 kg, which formed an increase of 6.44% and 15.59% relative to the background values. In the control group of cows-27.90±7.25 kg. By day 150, the average daily milk yield in animals of the first group was 25.07 ± 4.38 kg, the second - 25.33 ± 2.52 kg, control 22.75 ± 8.82 kg. Milk quality indicators - fat and protein content in animals receiving probiotic supplements were variable. In the milk of animals of the 1st and 2nd groups, the average fat content was recorded 3.69 g / 100g and 3.74 g / 100g, respectively, and the average protein content was 3.104 g / 100 g and 3.240 g / 100 g. In peers of the control group, the fat and protein content in milk was determined to be 3.79 g / 100 g and 3.016 g / 100 g. The studies established and proved the promise of the widespread introduction of probiotic in dairy cattle breeding, which was based on the composition of endo- and exometabolites of 2 strains of Bacillus subtilis. There was an improvement in the physiological status and an increase in the milk productivity of Holstein cows of the black-motley breed.

scholarly journals Effects of Yeast (Saccharomyces Cerevisiae) Feed Supplement on Milk Production and its Composition in Tunisian Holstein Friesian Cows

2014 ◽  
Vol 45 (3) ◽  
pp. 170-174 ◽  
Author(s):  
O. Maamouri ◽  
H. Selmi ◽  
N. M’hamdi
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Positive Influence ◽  
Control Group ◽  
Feed Supplement ◽  
Yeast Saccharomyces Cerevisiae ◽  
Holstein Friesian ◽  
Friesian Cows

Abstract A 105-day feed trial was conducted to evaluate the effect of probiotic feed supplement containing Saccharomyces cerevisiae on milk yield and its composition in Holstein Friesian cows. The trial was conducted in the region of Sidi Bouzid in the west of Tunisia. Effects of Saccharomyces cerevisiae have been investigated on eight Holstein Friesian cows randomly divided into two groups of four animals on the basis of age, body weight, average milk yield, and lactation number. The first group was supplemented with 2.5 g/cow/day of probiotic yeast Saccharomyces cerevisiae (2.5 1010 CFU/day) and the second group (control) was without the yeast. The study showed that supplementation with 2.5 g of yeast Saccharomyces cerevisiae per cow per day or 2.5 1010 CFU/day tended (P < 0.06) to increase milk production by 1.1 kg/cow. By cons, there was a significant increase of fat (P < 0.01; 52.8 and 46.9 g/cow/day) and protein (P < 0.05; 41.7 and 38.7 g/cow/day) content both for treated and control group, respectively. It is concluded that supplementation of Saccharomyces cerevisiae at 2.5 1010 CFU/day in the diet of dairy cows may have positive influence on milk fat and protei n yield (g/cow/day).

Sign in / Sign up

Export Citation Format

Share Document