scholarly journals Use of enzymatic-probiotic preparations in feeding of lacting cows at jsc “Plemzavod Rodina”

2020 ◽  
pp. 62-65
Author(s):  
Anastasia Sergeevna Litonina ◽  
Andrey Viktorovich Platonov ◽  
Julia Mikhailovna Smirnova
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
High Efficiency ◽  
Live Weight ◽  
Control Group ◽  
Milk Productivity ◽  
Feed Costs ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

The article reviews the effectiveness of the usage of enzyme-probiotic preparations “Rumit” and “Cellobacterin+” in feeding lactating cows. The test of enzyme-probiotic additives was carried out in the fall of 2019 in the conditions of JSC “Plemzavod Rodina” of the Vologda region. To study the impact of additives on the level of milk productivity, three groups of animals were formed by the method of balanced groups taking into account live weight, age, blood count, and productivity. The group of animals that received “Cellobacterin +” as an additive of 50 g per day for each head exceeded the control in terms of daily milk yield by 2.9% with a higher fat content of 0.01% and protein by 0.05% at lower food costs per product unit of 5%. High efficiency was also observed while using“Rumit” in feeding, the daily milk yield of cows’ basic fat contentin the experimental group exceeded the control by 7.4%, the yield of milk fat – by 4.7%, and protein – by 5.6%. Feed costs for products in this group were 7% lower in comparison with the control group. Due to the increase of per day milk productivity from one head, it is possible to get additional profit while feeding “Rumit” in the amount of 24.50 rubles, and while using “Celobacterin+” – 15.44 rubles.

PASSPRO SOY FEED PRODUCT IN THE DIETS OF NEWLY CALVED HIGHLY PRODUCTIVE COWS

2020 ◽  
pp. 263-267
Author(s):  
Е.G. Chuprina ◽  
◽  
D. А. Yurin ◽  
N.А. Yurina ◽  
◽  
...  
Keyword(s):  
Milk Yield ◽  
Soy Protein ◽  
Milk Fat ◽  
Live Weight ◽  
Control Group ◽  
Holstein Breed ◽  
The Past ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Studies conducted in farm conditions, the company, OOO PZ «Nasha Rodina» in Sokolovsky village of Gulkevichsky district of Krasnodar region. The aim of the research was to study the use of the PassPro Soy feed product consisting of protected soy protein in the diets of new-bodied highly productive cows. 2 groups of cows of the red-mottled Holstein breed were formed, selected according to the principle of pairs-analogues: by age in calving, calving time, live weight, productivity for the past lactation, fat and protein content in milk. The ration of the first control group was the ration accepted on the farm for newbodied cows. The diet of the second experimental group was the same as in the first control group, only 1.5 kg of compound feed was replaced with 1.5 kg of PassPro Soy, which is a protected soy protein in the form of a 5 mm granule. During the milking period, the daily milk yield of cows in the control group was 30.80±1.07 kg. The daily milk yield of cows of the second group, where 1.5 kg of compound feed was replaced by 1.5 kg of PassPro Soy, significantly increased by 6.6 %. Due to the increase in the gross milk yield, there is a tendency to increase the amount of milk fat in the milk of cows of the second group by 6.9 %, as well as milk protein by 11.3 %. In the experimental group, when replacing 1.5 kg of feed taken on the farm with 1.5 kg of PassPro Soy, milk productivity increased by 2.03 kg. Additional profit from the sale of milk in the experimental group increased by 48.72 rubles. for 1 head per day. The economic efficiency in the second experimental group was 6.30 %.

Milk productivity of the cows of Holstein and Simmental breeds in environment of the Novosibirsk region

2020 ◽  
pp. 41-49 ◽  
Author(s):  
A. Zheltikov ◽  
N. Kostomakhin ◽  
D. Adushinov ◽  
O. Zaiko ◽  
V. Dementev ◽  
...  
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Fat Content ◽  
Milk Productivity ◽  
Holstein Breed ◽  
Novosibirsk Region ◽  
Daily Milk Yield

The characteristic of milk productivity of cows of Holstein and Simmental breeds in LLC “Sibirskaya Niva” in the Maslyaninsky district in the Novosibirsk region has been given. It has been revealed that under the natural and climatic environments of the Western Siberia, when creating favorable conditions for feeding and housing for cows of Holstein and Simmental breeds have sufficiently high milk productivity. It has been found that Holstein first-calf heifers surpassed their Simmental herdmates by 959 kg in milk yield for the first 305 days of lactation under the same conditions of housing and feeding, by 3,1 kg in daily milk yield, by 38,2 kg in milk fat yield, and by 28,3 kg in milk protein yield (P < 0,001). There were no statistically significant differences between animals of Holstein and Simmental breeds in terms of fat and protein content in milk, which amounted to 3,94 and 2,96 % in Holstein breed and 3,97 and 2,98 % in Simmental breed, respectively. Both breeds have shown high milk productivity during the first 3 lactations. Thus, the milk yield of Holstein cows for the first 3 lactation was 6475–9290 kg, Simmental cows it was 5516–7680 kg, fat content was 3,93–3,99 and 3,96–3,97 %, respectively. The protein content in the milk of cows of both breeds did not exceed 3,0 %. High variability has been found in milk yield, yield of milk fat and protein, the coefficient of milk content and duration of lactation, the lowest in the content of protein and fat in milk and live weight. The correlation coefficients between the fat and protein content in milk were generally positive, but did not exceed 0,28. Therefore, breeding in the herd of cows in LLC “Sibirskaya Niva” have to be conducted not only by fat content, but also by protein content in milk.

EFFECT OF PVMC ON THE MILK PRODUCTIVIRY OF COWS

2021 ◽  
pp. 12-19
Author(s):  
О.В.к.б.н. ЛАТЫШЕВА ◽  
А.В. ИВАНОВ
Keyword(s):  
Milk Yield ◽  
Economic Effect ◽  
Maximum Level ◽  
Control Group ◽  
Milk Productivity ◽  
Significant Difference ◽  
The Difference ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Изучено влияние белково-витаминного минерального концентрата (БВМК) на молочную продуктивность коров и рассчитана экономическая эффективность его применения. Для проведения опыта с учетом количества дней лактации были сформированы 3 контрольные и 3 опытные группы по 10 голов. В I контрольную и I опытную группы вошли животные на стадии раздоя (30—60 дней лактации), во II контрольную и II опытную группы — коровы в середине лактации (150—180 дней), в III контрольную и III опытную — животные в конце лактации (240—270 дней). Для коров опытных групп были составлены рационы с БВМК, которым заменяли пропорциональное количество концентрированных кормов и часть витаминно-минерального премикса. Коровы I опытной группы получали с рационом БВМК «Статус VI» в количестве 1200 г, II опытной — БВМК «Статус I» по 350 г, III опытной — БВМК «Статус I» по 250 г на 1 голову в сутки. Максимальный уровень молочной продуктивности по результатам опыта показали животные II опытной группы. Среднесуточный удой за 60 дней опыта у них составил 46,1±1,11 кг, что больше на 4,7 кг молока, или на 11,4% (P≤0,05), чем во II контрольной группе. В период раздоя среднесуточный удой за 60 дней опыта в I контрольной и I опытной группах был на уровне 36,4±1,37 кг и 42,4±1,22 кг молока соответственно. Достоверное различие (P≤0,01) между ними составило 6,0 кг молока, или 16,5%. Наименьший среднесуточный удой за период опыта показали животные III контрольной (26,4±1,20 кг) и III опытной (28,5±1,53 кг) групп. Различие между ними было менее существенным, чем у коров в период раздоя и в середине лактации, и составило 2,1 кг, или 8,0%. Применение БВМК в кормлении лактирующих коров дало выраженный экономический эффект. Дополнительно полученная прибыль в расчете на 1 голову в сутки составила: в I — 127,4 руб., во II опытной группе — 117,0 руб., в III — 33,4 руб. The influence of PVMC on the milk productivity of cows has been studied and the economic efficiency of its application has been calculated. To experiment, taking into account the number of days of lactation, 3 control and 3 experimental groups of 10 animals each were formed. The 1st control and 1st experimental groups included animals at the milking stage (30—60 days of lactation), the 2nd control and 2nd experimental groups — cows in the middle of lactation (150—180 days of lactation), 3 control and 3rd experimental — animals at the end of lactation (240—270 days of lactation). For the cows of the experimental groups, rations were made with PVMC, which was replaced by a proportional amount of concentrated feed and a part of the vitamin and mineral premix. Cows of the 1st experimental group received a diet of PVMC «STATUS VI» in the amount of 1200 g / head/day, the 2nd experimental group — PVMC «STATUS I» at 350 g / head/day, the 3rd experimental group — PVMC «STATUS I» 250 g / head/day. The maximum level of milk productivity according to the results of the experiment was shown by the animals of the 2nd experimental group. The average daily milk yield for 60 days of the experiment was 46.1±1.11 kg, which is more by 4.7 kg of milk or 11.4% (P≤0,05) than in the 2nd control group. During the period of milking, the average daily milk yield for 60 days of the experiment in the 1st control and 1st experimental groups was at the level of 36.4±1.37 kg and 42.4±1.22 kg of milk, respectively. A significant difference (P≤0,01) between them was 6,0 kg of milk or 16.5%. The smallest average daily milk yield throughout the experiment was shown by the animals of the 3rd control (26,4±1,20 kg) and 3rd experimental groups (28.5±1.53 kg). The difference between them was less significant than in animals during the milk period and in the middle of lactation and amounted to 2.1 kg or 8,0%. The use of PVMC in feeding lactating cows gave a pronounced economic effect. Also, the profit received per head per day was: in the 1st experimental group (milking period) — 127.4 rubles; in the 2nd experimental group (mid—lactation) — 117.0 rubles; in the 3rd experimental group (end of lactation) — 33.4 rubles.

IMPACT OF NEW ACTIVATOR RUMINAL MICROFLORA ON DAIRY COWS EFFICIENCY

2020 ◽  
Author(s):  
Д.Ю. ГРИГОРЬЕВ ◽  
Д.А. ПИРОГОВ ◽  
Д.В. ФРИЗЕН
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Milk Yield ◽  
Milk Fat ◽  
Economic Effect ◽  
Control Group ◽  
Entire Group ◽  
Average Content ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Изучено влияние на продуктивность коров нового активатора рубцовой микрофлоры — «МегаБуст Румен» (МБР) на основе инактивированного ферментационного экстракта Trichoderma longibrachiantum и специализированного штамма дрожжей Saccharomyces cerevisiae в двух опытах. В первом эксперименте в опытной группе коровы в транзитный период получали по 100 г/день МБР за 7 дней до отела и с 1 по 150-й день лактации, в остальном содержание и кормление животных опытной (n=10) и контрольной (n=10) групп было идентичным. В среднем в сутки коровы в опытной группе давали молока 41,26±0,91 кг при среднем содержании молочного жира 3,8±0,33% и белка 3,34±0,06%, что на 6,81±0,62 кг молока больше (Р<0,05), чем в контрольной группе (34,82±0,78 кг при среднем содержании молочного жира 3,55±0,13 и белка 3,08±0,09%). Использование МБР в опытной группе способствовало существенному увеличению среднесуточного удоя (+1500 кг) в опытной группе по сравнению с контрольной на 1 голову, пересчитанного на содержание жира 3,5%, за первые 150 дней лактации. Экономический эффект применения МБР — это дополнительный чистый доход на 1 голову за период эксперимента — 40037 руб. Во втором опыте, который проводился на всей группе лактирующих коров, при скармливании на 1 голову в сутки 100 г МБР отмечали повышение добровольного потребления сухого вещества (+2 кг СВ), увеличение среднесуточного удоя (+4,4 кг) на 1 голову в день. Возврат инвестиций в активатор рубцовой микрофлоры на 1 руб. составил 12,7 руб. The effect of new rumen microflora activator — MegaBust Rumen (MBR) on the basis of inactivated fermentation extract Trichoderma longibrachiantum and a specialized strain of yeast Saccharomyces cerevisiae on the cows productivity was studied in two experiments.In the first experiment, in the experimental group, the cows received MBR in the dose 100 g/day in the transit period 7 days before calving and from the 1st to the 150th day of lactation, otherwise the keeping and feeding of the animals of the experimental and control groups were identical. In average, per day, cows in the experimental group gave milk 41.26±0.91 kg with an average content of milk fat of 3.8±0.33% and protein of 3.34±0.06%, which is 6.81±0,62 kg of milk is more (P<0.05) than in the control group (34.82±0.78 kg with an average content of milk fat of 3.55±0.13 and protein of 3.08±0.09%). The use of MBR in the experimental group contributed to a significant increase in the average daily milk yield (+1500 kg) in the experimental group compared to the control for 1 head, calculated on the fat content of 3.5% for the period of first 150 days of lactation. The economic effect of the use of MBR is an additional net income per head for the period of the experiment was — 40037 rubles. In the second experiment, which was conducted on the entire group of lactating cows, when feeding 100 g of MBR per head per day, an increase in voluntary consumption of dry matter (+2 kg DM), an increase in average daily milk yield (+4.4 kg) per 1 head per day were noted . Return on investment in the activator of ruminal microflora by 1 ruble amounted to 12.7 rubles.

scholarly journals The impact of cow keeping technologies on milk production of cows and their protection against midges in summer

2020 ◽  
Vol 10 (3) ◽  
pp. 6-11
Author(s):  
O.A. Fiodorova ◽  
E.I. Sivkova ◽  
M.I. Serkova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Cattle Grazing ◽  
Milk Productivity ◽  
Daily Milk Yield ◽  
The Impact ◽  
Harmful Effects ◽  
Daily Milk

Data are presented on the average daily milk yield of cows during the mass abundance of horseflies, mosquitoes and midges depending on the technology of keeping animals in the Tyumen region. Keeping the cows during this period without grazing on the walking grounds at the farm is one of the methods of preserving their milk productivity. During the period of mass flight of gnats, the milk productivity of cattle grazing in forest pastures is significantly reduced. Loss of milk during this period is 13.68%, while the longer the harmful effects of the vulture, the more significant these losses.

THE GROWTH RETARDATION EFFECT IN EARLY HEIFERS ONTOGENESIS ON DAIRY COWS PRODUCTIVITY

2020 ◽  
Vol 11 (2) ◽  
pp. 28-37
Author(s):  
А. А. Klimkovetskyi ◽  
D. K. Nosevych ◽  
I. P. Chumachenko
Keyword(s):  
Milk Yield ◽  
Growth Retardation ◽  
Milk Fat ◽  
Live Weight ◽  
Daily Weight Gain ◽  
Control Group ◽  
Negative Effect ◽  
The Subject ◽  
Daily Milk Yield ◽  
Protein Output

The objective of the study is to determine, whether the growth retardations of replacement cows are admissible, and in which periods of culture they most significantly affect the further productivity of the cows. The subject of the analysis was the number of animals who at the age of 15 months had the live weight no less than 300 kg (which complied with the breed standard or was inferior to the requirements for 10 % maximum). The animals were divided into 5 groups. The first group included the animals with growth retardation before the age of 3 months. The second one – at the age of 3-6 months; the third one – 6-9 months and the fourth one – 9-12 months. The fifth one was the control group, without growth retardation. The growth retardation referred to the live weight reduction at the end of the period in comparison with its beginning or the average daily weight gain less than 500 g. The authors measured the live weight, first lactation productivity and the lifetime productivity of the animals. It has been established that the growth retardation of the heifers before the age of 3 months negatively affected the growth rate in the following three-month period. They can completely compensate the growth retardation only at the age of 18 months. The other group animals compensated the live weight retardation in comparison with the control group by the age of 15 months. The firstlings which had the growth retardation at the age of 0-3 and 3-6 months, has the highest milk productivity. The same trend was observed in milk fat and protein output and the age of the first calving. However, in the growth retardation group the livability of firstlings, the number of lactations and the productive live was worse. The lifelong milk yield in the growth retardation group was 15-37 % lower than in the control group. Growth retardation at the age of 6-9 months negatively affected the higher lactation productivity. The highest daily milk yield in this group of cows was lower in the control group by 14 % (p < 0.05). Therefore, growth retardation had no negative effect on the milk yield of the firstlings, but resulted in lower survival of the animals, shortened the productive life and lifetime yield. The later the growths retardation occurs, the sooner the heifers can compensate it and the lower is its effect on the lifetime productivity of the cows. In view of the reduction of lifetime productivity, it is purposeful to draft out the animals with the growth retardation.

scholarly journals Effect of Rumen Protected Methionine Supplementation on Early Lactational Responses of Dairy Cows Fed a Grass Silage and Cereals Diet

1999 ◽  
Vol 47 (2) ◽  
pp. 191-206 ◽  
Author(s):  
Stefania Iwańska ◽  
Danuta Strusińska ◽  
Barbara Pysera
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Milk Protein ◽  
Production Performance ◽  
Control Group ◽  
Net Energy ◽  
Grass Silage ◽  
Daily Milk Yield ◽  
Daily Milk

To investigate the milk production limiting potential of a diet based on grass silage (40%), hay (15%), dried sugar beet pulp (13%) and grain compound mixture (32%), 28 multiparous cows in early lactation were randomly assigned to two treatment groups: a control group and a group receiving supplementary rumen protected methionine (RPMet) treatment (12 g intestinally available methionine/ cow/day, given 1–120 days postpartum; Smartamine™; RPAN’s technology). The diet was formulated to meet the requirements for protein and net energy. RPMet supplementation had no significant effect on DMI (kg/cow/day), milk dry mass, milk lactose and milk urea contents. Responses for mean daily milk yield, mean milk fat and milk protein yields were significantly higher (P < 0.05) in cows supplied with RPMet than in controls. Mean daily milk yield, milk protein and milk fat yields increased by 2.4 kg, 108 g and 124 g, respectively. The mean daily milk protein and casein contents were increased by 1.8 g and 0.9 g and milk fat content by 1.2 g in 1 kg of milk, respectively. The results suggest that in cows fed grass silage and a grain compound mixture milk production is limited by methionine insufficiency, but milk production performance can be increased significantly by the addition of RPMet to the diet.

Effect of value addition to rice straw on the nutritional improvement and milk productivity of dairy cattle

2020 ◽  
Vol 49 (1) ◽  
pp. 55-62
Author(s):  
MM Islam ◽  
A Akter ◽  
M Salauddin ◽  
MN Sultana ◽  
MM Uddin
Keyword(s):  
Rice Straw ◽  
Milk Yield ◽  
Control Group ◽  
Value Addition ◽  
Milk Productivity ◽  
Lactation Stage ◽  
Significant Difference ◽  
Daily Milk Yield ◽  
Physical And Chemical ◽  
Daily Milk

The objective of this study was to evaluate the physical and chemical value addition to rice straw on nutritional quality improvement of rice straw and its effect on milk productivity and composition. Twelve crossbred milking cows (Frisian Cross) of mid-lactation stage and second parity, having average initial body weight of 398.72 ± 42.22 kg and milk yield of 6.42± 0.78 kg were assigned to three treatment group (each group has 4 animals) and one control group. Four treatments were considered: T0 (control): loose rice straw + green grass + concentrate; T1: value addition to rice straw through chopping (physical) + green grass + concentrate; T2: value addition to rice straw through urea and molasses without chopped (Chemical) + green grass + concentrate; and T3: value addition to rice straw through urea molasses with chopping (Physical and chemical) + green grass + concentrate. The results revealed that T2 was significantly (p<0.05) higher than T0, T1 and T3 where total DM intake was 13.44± 0.26, 12.96±0.38, 12.47±0.16 and 12.06±0.31 for T2, T0, T3 and T1, respectively and the same was found for Crude protein. The daily milk yield was higher in T3 (8.12±0.30 kg/day) and followed by T0 (7.30±0.23 kg/day), T1 (6.61±1.35 kg/day) and T2 (6.78±0.09 kg/day) but daily milk yield gains were 0.31, 0.11, 1.44 and 1.46 kg in T0, T1, T2, and T3, respectively and differences were highly significant (p<0.01) among the groups. Milk composition of fat (4.40, 3.97, 4.90 and 4.10%), Protein (3.88, 3.69, 3.98 and 3.72%), SNF (8.42, 8.69, 8.49 and 8.13) and TS (12.57, 12.34, 12.96 and 11.90) in T0, T1, T2 and T3, respectively. There was significant difference (p<0.01) where the cows supplemented with UMS without and with chopping recorded SNF. Further study might be needed to estimate the economics of the value addition for enhancing the adoption of this technology at farm level through development of entrepreneurship. Bang. J. Anim. Sci. 2020. 49 (1): 55-62

scholarly journals Milk production and its relationship with milk composition, body and udder morphological traits in Bedouin goat reared under arid conditions

2018 ◽  
Vol 41 (1) ◽  
pp. 42552
Author(s):  
Fatima Kouri ◽  
Salima Charallah ◽  
Amina Kouri ◽  
Zaina Amirat ◽  
Farida Khammar
Keyword(s):  
Body Weight ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Morphological Traits ◽  
Growth Traits ◽  
Average Daily Gain ◽  
Arid Conditions ◽  
Daily Milk Yield ◽  
Daily Milk

 This research aims to assess the performances of lactating Bedouin goat under arid conditions, focusing on the relationship of milk yield with body and udder morphology and growth traits. Fourteen goats and their kids were followed during early lactation (90 days post-partum). Mean daily milk yield was 0.56 kg. Milk fat, proteins, lactose, solids non-fat and minerals were respectively 34.9, 38.9, 48.8, 107 and 6.7 g L-1. Mean kids’ birth weight, adjusted body weight at 90 days of age and average daily gain were respectively 2 kg, 6.6 kg and 51.4 g day-1. Daily milk yield was correlated with goats’ body weight, withers height, rump height, udder width and udder circumference but not with linear udder score and growth performances. These results provide important data about the milk production of Bedouin goat emphasizing its correlation with body and udder morphological traits which can help to elaborate a specific breeding program for this breed. 

scholarly journals Effect of season, genotype and lactation on milk yield and composition of local and crossbred dairy cows reared under different feed base region

2016 ◽  
Vol 19 (1-2) ◽  
pp. 50-65
Author(s):  
MA Baset ◽  
KS Huque ◽  
NR Sarker ◽  
MM Hossain ◽  
MN Islam
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Milk Protein ◽  
Block Design ◽  
Milk Composition ◽  
Base Region ◽  
Total Solids ◽  
Randomized Block Design ◽  
Daily Milk Yield ◽  
Daily Milk

A total of 160 cows, 10 cows in each of native (local cow) and crossbred (local × Holstein Friesian) origins differing in lactation were used in 2×2×2×2 factorial experiment using Randomized Block Design (RBD) to evaluate milk yield and composition of cows considering regions (good & poor feed base region), seasons (dry: Nov.–Feb. 2009 & wet: Jun.–Oct. 2009), genotypes and lactation. A “good and/or poor feed base” region was classified based on the availability of quantity and quality roughages throughout the year. The study revealed that the daily milk yield and 4% FCM of cows under good feed base condition were 6.76 and 6.49 kg, respectively and under poor feed base condition were 3.67 and 3.31 kg, respectively. Feed base region did not affect on milk fat and it was observed that the milk protein, lactose, solids-not-fat (SNF), minerals and total solids under good feed base condition were 37.9, 54.9, 100.9, 6.3 and 140.6 g/kg, respectively, whereas, under poor feed base condition the values were 36.3, 52.9, 98.0, 6.1 and 135.2 g/kg, respectively. Season did not affect milk yield and composition except minerals (6.5 g/kg vs. 5.9 g/kg). Genotypes significantly (p?0.01) influenced daily milk yield, the milk protein and minerals. Lactation did not affect milk yield and the milk protein, but influenced the fat, lactose, SNF, minerals and total solids. The interaction of feed base regions and seasons significantly (p?0.01) influenced milk yield and the milk fat and SNF. The milk protein and lactose was influenced by the interaction of feed bases region, seasons and lactation. Milk yield negatively correlated with fat per cent. The percentage of fat significantly (p?0.01) correlated with protein, lactose, SNF, and minerals %. The percentage protein correlated with lactose, SNF and minerals. Lactose % significantly (p?0.01) correlated with SNF%. It may be concluded that milk yield and composition depends on feed base region, genotype and lactation of cows. Season did not influence milk yield and the composition. Milk yield negatively correlated with the percentage of fat, protein, lactose, SNF and milk composition strongly correlated with each other.Bangladesh J. of Livestock Res. 19(1-2): 50-65, Jan-Dec 2012

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