scholarly journals Effect of leucaena forage and silage substitution in concentrates on digestibility, nitrogen utilization and milk yield in dairy cows

2016 ◽  
Vol 1 (3) ◽  
pp. 37 ◽  
Author(s):  
Myo Khaing ◽  
Min Aung ◽  
Moe Thida Htun ◽  
Khin San Mu ◽  
Aung Aung ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Control Diet ◽  
Nitrogen Utilization ◽  
Treatment Groups ◽  
Randomized Design ◽  
Holstein Friesian ◽  
Completely Randomized Design ◽  
Effect Of Feeding ◽  
Friesian Cows

This experiment was conducted to determine the effect of feeding leucaena forage and silage substitution in concentrate on the performances of dairy cows. Nine cross-bred Holstein Friesian cows (410±12kg) in the 12th week of lactation were randomly allocated to one of three treatment groups with three replicates/treatments in a completely randomized design. The three treatments were control diet without substitution of leucaena forage and silage (DLFS0), diet with substitution of leucaena forage 10% (DLF10) and diet with substitution of leucaena silage 10% (DLS10). Cows were fed treatments for 60 days. Although nutrient intakes were not significantly different (p>0.05) each other, digestibility of DLFS0 was significantly higher (p<0.05) than others. Conversely, nitrogen utilization and average milk yield of cows offered DLFS0 were significantly lower (p<0.05) than those of cows fed on DLF10 and DLS10. The highest feed cost (p<0.05) per kg of milk was found in DLFS0 and the lowest cost was observed in DLF10. Therefore, although the leucana forage and silage could be substitute up to 10% of concentrates without adverse effects on the performances of dairy cows, the substitution of leucaena forage gave the better performances than that of leucaena silage.

scholarly journals Feeding values of conventional diets and their effects on the performances of dairy cows in Central Myanmar

2016 ◽  
Vol 1 (4) ◽  
pp. 1
Author(s):  
Min Aung ◽  
Yin Yin Kyawt ◽  
Moe Thidar Htun ◽  
Khin San Mu ◽  
Aung Aung
Keyword(s):  
Dairy Cows ◽  
Scientific Information ◽  
Nutrient Digestibility ◽  
Treatment Groups ◽  
Feed Cost ◽  
Randomized Design ◽  
Holstein Friesian ◽  
Feeding Value ◽  
Completely Randomized Design ◽  
Friesian Cows

The conventional diets have been fed to dairy cows since many years ago in Myanmar, however there is a little scientific information regarding the use of those diets as feed. Therefore, this study was conducted to evaluate the feeding values of conventional diets and their effects on the performances of dairy cows in Central Myanmar. Nine cross-bred Holstein Friesian cows (460±22kg) with the 12th week of lactation were randomly allocated to one of three treatment groups with three replicates in a completely randomized design. The three treatments were Diet-ST (common diet from Sin Tel, Tatar U Township), Diet-MN (common diet from Myay Ngu, Tatar U Township) and Diet-AM (common diet from Amarapura Township). Cows were fed treatments for 60 days. The roughage to concentrate ratios ranged from 53:47 to 72:28 and the nutritive values were significantly different (p<0.05) each other. The highest nutrient intakes were observed in dairy cows fed on Diet-MN, however the nutrient digestibility were not different (p>0.05) except the CP and ether extract digestibility (CPD and EED). The nitrogen utilization was highest in dairy cows fed on Diet-ST and the lowest value was observed in the dairy cows fed on Diet-AM. Although the milk compositions were not different (p>0.05), the average milk yield of dairy cows offered the Diet-MN was significantly higher (p<0.05) than those of dairy cows fed on other diets. The highest total feed cost (p<0.05) was found in Diet-AM and the lowest value (p<0.05) was in Diet-MN. According to these findings, it was concluded that the highest feeding value was observed in Diet-MN and its effect on the performances of dairy cows was also greater than others. Moreover, it would be suggested that better bean residues and sesame residues could be used as fibre sources in the diets of dairy cows.

Effect of yeast based mannan oligosaccharide (Actigen™) supplementation on growth, carcass characteristics and physiological response in broiler chickens

2018 ◽  
Author(s):  
M. Waqas ◽  
S. Mehmood ◽  
A. Mahmud ◽  
Saima . ◽  
J. Hussain ◽  
...  
Keyword(s):  
Antibody Response ◽  
Broiler Chickens ◽  
Control Diet ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Mannan Oligosaccharide ◽  
Treatment Groups ◽  
Blood Biochemical ◽  
Randomized Design ◽  
Completely Randomized Design

The effect of a prebiotic mannan oligosaccharides (Actigen™) supplementation for 35 days was analyzed on growth, carcass traits and blood physiology of broilers. A total of 360-day-old broilers distributed under completely randomized design into four treatment groups with 24 replicates of 15 birds each was fed with Actigen™ supplemented diets @ 0.2, 0.4 and 0.6 g/Kg and a control diet. Data for growth performance were collected weekly while slaughtering data at 35th day. Results showed that the birds fed with Actigen™ added diet @ 0.6 g/Kg exhibited improved livability% (98.88±1.11), feed intake (3391.68±38.70 g), body weight (2157.66±31.52 g), weight gain (2111.49±30.89 g), FCR (1.57±0.03), dressing% (72.28±0.40), breast yield% (29.58±0.05), thigh yield% (31.61±0.30) and blood biochemical parameters. Superior (P£0.05) antibody response against ND and IB were recorded in birds exposed to Actigen™ supplemented diet @ 0.6 g/Kg. It was concluded that Actigen™ supplementation @ 0.6 g/Kg corroborated to improve growth, carcass traits, blood biochemistry and antibody response in broilers.

scholarly journals The Association of Calcium Profiles at Calving with Health and Performance of Holstein Cows and Their Calves

2021 ◽  
Vol 3 (4) ◽  
pp. p1
Author(s):  
Constantin Gavan ◽  
Mihaela Riza
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Holstein Cows ◽  
Fetal Membranes ◽  
Health Implications ◽  
Lactating Dairy Cows ◽  
Holstein Friesian ◽  
And Performance ◽  
Significant Health ◽  
Friesian Cows

The aim of this study was to assess the association of hypocalcemia at calving with health and performance of Holstein cows and their calves. Data were collected January 1st 2017 to December 31st 2020. A total of 431 lactating Holstein Friesian cows (118 primiparous and 313 multiparous) from a research of hypocalcemia was 2 groups (hypo and non-hypo). The overall prevalence of hypocalcemia was 3.4% for first-lactation cows and 18% for multiparous cows. Lactating dairy cows with hypocalcemia had greater proportion of cows with Retained Fetal Membranes (RFM) metritis and culling within 60 days in milk (DIM), compared with non-hypocalcemia respectively. For the first 2 official milk tests milk yield and components (% fat, % protein on SCC) did not differ between hypo and non-hypo cows. The days in milk at first service, mastitis, dystocia and pregnancy at first service were not different between hypo and non-hypo groups. The proportion of stillbirth, survival at 60 days of age in calves did not differ between calves born from hypo or non-hypo cows. Calves born from Hypo cows had greater incidence of diarrhea (38.3%) than calves born (22.3%) from non-hypo cows. The results of this study show that hypocalcemia in calving has significant health implications for both dams and their calves.  

scholarly journals Effect of Age at First Calving on First Lactation Milk Yield, Lifetime Milk Production And Longevity of Cows

2019 ◽  
Vol 19 (1) ◽  
pp. 189-200
Author(s):  
Anna Sawa ◽  
Kamil Siatka ◽  
Sylwia Krężel-Czopek
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Considerable Decrease ◽  
Age At First Calving ◽  
Productive Life ◽  
Active Population ◽  
Holstein Friesian ◽  
Effect Of Age ◽  
Friesian Cows

AbstractThe objective of the study was to analyse the effect of age at first calving (AFC) on first lactation milk yield, lifetime milk production and longevity of dairy cows. The study used SYMLEK data on the milk yield and culling of 111 857 Polish Holstein-Friesian cows from the active population in Pomerania and Kujawy, Poland. The cows first calved during 2000–2009 and were used or removed from the herds until the end of 2015. For each cow, calculations were made of first lactation milk yield, lifetime milk production, first lactation milk yield per milking day, lifetime milk production per day, as well as the lifespan (length of productive life, duration of rearing) and number of calvings. Based on the age at first calving (duration of the rearing period), the cows were grouped as follows: ≤22, 22.1–24.0, 24.1–26.0, 26.1–28.0, 28.1–30.0, 30.1–32.0 and >32 months. The GLM, CORR PEARSON and FREQ procedures from the SAS package were used in the statistical calculations. Considering first lactation milk yield, lifetime milk production and longevity, it is recommended that the cows should be first milked between 22.1 and 26.0 months of age. This is supported by the approximately 24% higher lifetime milk production in relation to the latest calving cows (P<0.01). Late commencement of the first milking (especially after 28 months) causes a considerable decrease in the first lactation milk yield and lifetime milk production, shortens the productive period, reduces the number of calvings, and increases culling rate due to low milk yield and udder diseases.

Performance of broiler Japanese quail supplemented with single-strain and multi-strain bacteria

2018 ◽  
Author(s):  
M. Azhar ◽  
S. Ahmed ◽  
S. Mehmood ◽  
S. Naveed ◽  
S. Ahmad ◽  
...  
Keyword(s):  
Weight Gain ◽  
Blood Glucose ◽  
Carcass Characteristics ◽  
Protein Digestibility ◽  
Single Strain ◽  
Treatment Groups ◽  
Japanese Quails ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Effect Of Feeding

The growth performance of six-hundred (600) growing Japanese quails,distributed according to completely randomized design into 3 treatment groups(5 replicates/ treatment of 40 birds each) was recorded to evaluate the effect of feeding single and multi-strain bacteria. The experiment lasted for 4 weeks. Significant(P£0.05) results were observed regarding weight gain, folds of weight gain and FCR in the group fed multi-strain bacteria. Improved(P£0.05)total tract protein digestibility was detected in birds fed the diet containing multi-strain bacteria. Higher blood glucose level (P£0.05)was noticed in the group fed with single-strain bacteria.Blood cholesterol level inbirds fedsingle and multi-strain bacteria was found higher (P£0.05). Enhanced(P£0.05)carcass characteristics and dressing percentage were recorded in birds fed with single strain bacteria.Superior (P£0.05) weights of bursa and spleen wererecordedin the group fed with single-strain bacteria.

scholarly journals Effect of feed grade acidifiers on total tract mineral retention, intestinal pH and phytate utilization by broiler finisher chickens

2020 ◽  
Vol 44 (1) ◽  
pp. 282-289
Author(s):  
C. U. Idachaba ◽  
I. Abdullahi ◽  
D. A. Kurtong
Keyword(s):  
Broiler Chickens ◽  
Control Diet ◽  
Nutrient Utilization ◽  
Control Treatment ◽  
Control Group ◽  
Available Phosphorus ◽  
Treatment Groups ◽  
Randomized Design ◽  
Mineral Utilization ◽  
Completely Randomized Design

Mineral chelators such as organic acids have been reported to compete favourably with phytate by forming soluble complexes with feed minerals. Effect of feed grade acidifiers on total tract mineral retention and intestinal pH of broiler finisher chickens was investigated. A total of 300-broiler finisher chickens were assigned to four treatment groups. Each treatment was replicated thrice with twenty chickens per replicate in a completely randomized design. The control treatment (T1 ) was fed the control diet adequate in available phosphorus at 0.5% while other treatments (T2 -T4 ) were fed sub-optimal available phosphorus diets at 0.4%. Three blends of acidifiers; Fysal®, Orgacid® and Acidomix® were supplemented in the diets of chickens in treatments 2, 3 and 4 at 0.1% (1kg per ton/feed). Chickens fed diet supplemented  with Fysal® showed the best (P<0.05) results in total tract mineral retention 56.5+/-5.75 compared to the control and other treatments. The poor mineral retention i.e. 35 and 46% for calcium and phosphorus respectively by chickens fed the control diet was attributed to the insoluble phytate-mineral complex that limits mineral bioavailability. Intestinal segments of chickens fed acidified diets showed significant reduction (P<0.05) in pH in the range of 5.26-7.16 across duodenum to ileum compared to the control group 6.83-8.76. It is concluded that feed acidification at 0.1% improves mineral utilization in broiler chickens as it competes favourably with phytate in the lumen of the gut leading to better nutrient utilization.

The combination of the n-alkanes and 13C techniques to estimate individual dry matter intakes of herbage and maize silage by grazing dairy cows

2000 ◽  
Vol 135 (1) ◽  
pp. 47-55 ◽  
Author(s):  
S. C. GARCÍA ◽  
C. W. HOLMES ◽  
J. HODGSON ◽  
A. MACDONALD
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Maize Silage ◽  
Lactation Length ◽  
Randomized Design ◽  
Holstein Friesian ◽  
Faecal Samples ◽  
Daily Intakes ◽  
Grazing Dairy Cows

Two studies were conducted at Massey University in 1998. Expt 1 investigated the combined use of n-alkanes and 13C techniques for the estimation of individual proportions and total intakes of herbage (H) and maize silage (MS) by dairy cows. Expt 2 measured the variation in the amount of MS consumed by individual cows fed as a group. In Expt 1, six dry Holstein–Friesian cows were kept indoors and fed a diet containing one of the following H[ratio ]MS ratios (dry matter basis)[ratio ]100[ratio ]0, 80[ratio ]20, 60[ratio ]40, 40[ratio ]60, 20[ratio ]80 or 10[ratio ]90 for 25 days. Cows were dosed with a slow-release capsule containing 8 g of dotriacontane (C32) and 8 g of hexatriacontane (C36). Intake estimates were based on individual faecal samples collected twice daily during two 5-day periods. In Expt 2 (grazing trial), 12 early-lactation cows were selected from a commercial herd of 48 autumn-calving cows and blocked into pairs according to milk yield, lactation length and lactation number in a complete block randomized design. Within each pair, cows were randomly assigned to two treatments: supplemented, S (4 kg MS DM per cow after the morning milking in feed troughs) or not supplemented, NS. Another eight cows were randomly selected from the rest of the herd to increase the number of individual estimations of H and MS intakes. Cows grazed perennial ryegrass-white clover pasture during the rest of the day. In Expt 1, H[ratio ]MS ratios were not accurately predicted by the odd-chained n-alkanes, but there was a strong linear relationship between the concentration of 13C in faeces and actual H: MS ratios in the diet. The 13C method was therefore combined with the n-alkanes, resulting in accurate estimations of H and MS intakes. In Expt 2, a large variation was observed among individual cows in their daily intakes of MS (range 0·94 to 5·09 kg DM per cow, coefficient of variation = 36%), but this variation in MS intake was not associated with milk yield (P > 0·05). The results indicate that the n-alkane and 13C techniques can be successfully combined to estimate the intake of MS and H of grazing cows supplemented as a group. Under the conditions of the present study, individual cows differ considerably in the amount of maize silage consumed per day, although the reasons for this are not clear.

scholarly journals Evaluation of the Usefulness of Hybrid Rye in Feeding Polish Holstein-Friesian Dairy Cows in Early Lactation

2015 ◽  
Vol 15 (4) ◽  
pp. 929-943
Author(s):  
Marek Pieszka ◽  
Marian Kamyczek ◽  
Bartosz Rudzki ◽  
Magdalena Pieszka
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Body Condition ◽  
Milk Composition ◽  
Control Group ◽  
Early Lactation ◽  
Holstein Friesian ◽  
Hybrid Rye ◽  
Hybrid Variety ◽  
Effect Of Feeding

Abstract The aim of the study was to compare the effect of feeding a hybrid rye grain in rations for dairy cows during the first 100 days of lactation on body condition, milk yield and milk composition. Feeding cows with concentrates containing in its composition 25% or 40% of the ground hybrid rye did not decrease the intake of concentrate or PMR rations as compared to the control group. The introduction of 25% or 40% of the rye hybrid variety Visello to the concentrates did not reduce the milk yield of the cows during the first 100 days of lactation. No significant differences in the chemical composition of the milk were observed. The cows fed rye maintained their weight and body condition during the first 100 days of lactation at the same level. The addition of hybrid rye grains in the amount of 25% to concentrate had no significant effect on the fatty acid profile of the milk whereas 40% of rye improved fatty acids composition by decreasing C18:0 and increasing C18:1 n-9 in the milk.

scholarly journals Response of Laying Hens to total Dietary Replacement of Maize with Cassava.

2021 ◽  
Vol 34 (2) ◽  
pp. 196-202
Author(s):  
L.A. F. Akinola ◽  
B. M. Oruwari
Keyword(s):  
Laying Hens ◽  
Control Diet ◽  
Dietary Treatment ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Randomized Design ◽  
Significant Difference ◽  
Cassava Root Meal ◽  
Overall Performance ◽  
Completely Randomized Design

he response of Isa Brown laying hens during 77–85 weeks of age to peeled unfermented cassava root meal (CRM) as total substitute for maize in diet was examined. Eighty (80) hens were assigned to four dietary treatment groups (T1,T2,T3 and T4) in a completely randomized design. The control diet (CD) contained 40% maize while the proportion of maize in the CD was replaced with 100, 110 and 120% CRM amounting to 40, 44 and 48% of cassava in diet for T2, T3, and T4 respectively. All diets were isocaloric and isonitrogenous. The CRM diets produced statistically significant (p<0.05) improvements by leading to lower feed intake, better feed conversion and increased hen day production (HDP) with increasing levels of CRM in diet. Although the eggs obtained from birds fed the CD had significantly higher yolk weight than those from the CRM, there was no significant difference (p>0.05) in egg weight in all treatment groups. The best overall performance was achieved from birds fed 48% (120% replacement) cassava diet.

Changes in daily energy amounts of main milk components (lactose, protein and fat) during the lactation of high-yielding dairy cows

2004 ◽  
Vol 52 (4) ◽  
pp. 457-467 ◽  
Author(s):  
A. Gáspárdy ◽  
Z. Schwartz ◽  
L. Zöldág ◽  
T. Veresegyházy ◽  
S. Fekete
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Energy Content ◽  
Relative Energy ◽  
The Other ◽  
Holstein Friesian ◽  
Daily Energy ◽  
Milk Components ◽  
The Absolute ◽  
Friesian Cows

The aim of this study was to examine the changes of the daily energy amount of lactose, protein and fat throughout the lactations, and compare them to each other. A total of 309 Israeli Holstein-Friesian cows from one kibbutz were investigated in three lactations, and information was given for a period of five years from 1996 to the end of 2000. The distribution of milk components and milk yield during lactation, and changes of the absolute and relative energy amount in the different milk components were calculated and evaluated. The results showed changes in the energy content of milk and its different components throughout the lactation. Each component (fat, lactose and protein) is dominant in different periods during the lactation. The energy amount from fat reaches a peak first, between days 40 and 50. Lactose has a peak at about day 66 of lactation, and protein reaches the peak last, approximately at day 104 of lactation. It seems that this peak sequence is constant and it is considered to be physiological. It might be suggested that there is a regulation governing the secretion of the different components at different times, and only one component is dominant in a given period. Each component exerts negative and positive influences on the secretion of the other components, which interact with each other and are not fully independent.

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