Milk production in lactating cows

Our previous RNA-sequencing study revealed that the ATF3 and CDKN1A genes were remarkably differentially expressed between the mammary glands of lactating Holstein cows with extremely high and low milk protein and fat percentage so that both of them were considered as candidates for milk composition.

13p vinarcissa 21-03-2023 1 1   Download

RNA-sequencing was performed to explore the bovine liver transcriptomes of Holstein cows to detect potential functional genes related to lactation and milk composition traits in dairy cattle.

12p vihagrid 30-01-2023 8 3   Download

Lactating dairy cows are the greatest livestock contributor of methane, a major global greenhouse gas (GHG). However, good feeding management with adequate mineral intake can offers an effective approach to maintaining high levels of milk production and the health of dairy cows over the entire course of lactation, while also helping to reduce methane emission.

9p vidarwin 23-02-2022 14 1   Download

Bovine milk is an important nutrient source for humans. Forage plays a vital role in dairy husbandry via affecting milk quality and quantity. However, the differences in mammary metabolism of dairy cows fed different forages remain elucidated. In this study, we utilized transcriptomic RNA-seq and iTRAQ proteomic techniques to investigate and integrate the differences of molecular pathways and biological processes in the mammary tissues collected from 12 lactating cows fed corn stover (CS, low-quality, n = 6) and alfalfa hay (AH, high-quality, n = 6).

18p vibeauty 23-10-2021 15 1   Download

Previous studies have identified many immune pathways which are consistently altered in humans and model organisms as they age. Dairy cows are often culled at quite young ages due to an inability to cope adequately with metabolic and infectious diseases, resulting in reduced milk production and infertility. Improved longevity is therefore a desirable trait which would benefit both farmers and their cows. This study analysed the transcriptome derived from RNA-seq data of leukocytes obtained from Holstein cows in early lactation with respect to lactation number.

17p vitzuyu2711 29-09-2021 10 1   Download

Genetic polymorphisms are known to influence milk production and composition. However, the genomic mechanisms involved in the genetic regulation of milk component synthesis are not completely understood.

11p visilicon2711 20-08-2021 12 1   Download

In this situation the microorganisms can easily invade the udder and cause mastitis. Mastitis will affect the quality of milk and production capacity of the cow not only in current lactation and also affects subsequent lactation. In the field condition Tamil Nadu dairy farmers are regularly using the potassium permanganate teat dip solution for cleaning the udder and teat before and after milking

3p gaocaolon9 22-12-2020 10 2   Download

Milk fever is the common disease and one among the important metabolic disorder in lactating dairy animals. It is an afebrile hypocalcaemic disease of cattle usually associated with immediately after parturition and initiation of lactation. Milk fever is a metabolic disease occurring in dairy animals during parturient period and management is economically most important, as it results in not only reduction in milk production but also loss of animals.

4p caygaocaolon7 18-09-2020 14 1   Download

The present study was designed to ascertain the effect of supplementation of organic zinc and inorganic zinc on cost effectiveness in milk production on experimental dairy cows for 20 days.

6p nguaconbaynhay7 15-08-2020 12 1   Download

Crossbred dairy cattle milk production and milk fat depends mainly on feeding management with adequate availability of nutrients in their feed materials. It comprises the major protein supply for milk production. The demand of milk is increasing for nutrition of population in country. Presently, Azolla green fodder feeding is being considered essential for lactating dairy animals.

5p nguaconbaynhay7 15-08-2020 10 1   Download

A study was conducted at the Banaras Hindu University Dairy Farm to estimate the effects of feeding management practices on rearing of animals and milk production in terms of economic analysis. The data pertaining to the feeds and feeding systems being followed and their input costs were collected from the records maintained for all the animals at the dairy farm. The lactation yield of cows and buffaloes has been worked out to 996 and 1150 Litres, respectively. The cost of daily feeding per head and per Litre of milk has been estimated to Rs. 60.26 and Rs. 10.80, respectively.

7p nguaconbaynhay6 24-06-2020 16 1   Download

Twenty-four Karan Fries cattle in early lactation with good body condition score (>3 at 6 point scale) were allotted four treatments randomly in summer to study the effect of cooling in combination with altered fodder concentrate ratio on various production parameters. Provision of cooling as well as higher concentrate allowances significantly (P0.05) by feeding or cooling strategies. Animals with access to evaporative cooling had greater milk yield than cows with fan alone. Highest overall milk yield was recorded in T4 group cows (16.96 Kg/cow/day) followed by T3, T2 and T1 cows (15.

14p nguaconbaynhay6 23-06-2020 5 0   Download

Dietary nutrients not only affect productive and reproductive performance but also milk composition traits like milk protein and milk lactose. This study was conducted to observe effect of copper and zinc feeding on milk protein and milk lactose when these are fed in pre and post partum stage to kankrej cows. Twenty Kankrej pregnant cows (five in each group) at 30 days before the expected date of calving were used to present study and grouped into four groups (five in each group) as control, copper supplemented, zinc supplemented and supplemented with both elements.

8p quenchua6 15-06-2020 12 1   Download

An experiment was conducted to investigate the effect of vitamin E and Chromium propionate during transition period in Sahiwal cows to assess the possibilities of improvement in production performance of supplementation of vitamin E and Chromium propionate. A total of 28 cows were selected on the basis of their milk yield, parity and body weight are grouped into four homogenous treatment groups of 7 each. No significant effect of supplementation was seen on milk composition.

6p quenchua6 15-06-2020 11 3   Download

The dairy farming in our country is entirely different from other developed countries. The reason is that small and marginal farmers feeding of dairy animals produce the bulk of production in our country. In terms of buffer use in nutrition, it has been defined as a salt of a weak acid which neutralizes acids that occur in feeds or acids produced during digestion and metabolism of nutrients. The experiment was carried out on 16 healthy crossbred cows nearly similar age and in late stage lactation to study the effect of feeding buffer on milk yield and fat per cent of raw milk.

5p gaocaolon5 14-06-2020 8 1   Download

A study was conducted in lactating dairy cows to evaluate the effect of wet rice distillers’ grain and soluble (WRDGS) on milk production and composition. Forty (40) lactating Jersey cows, in mid-lactation with an average live weight 350 kg and producing 8-9 kg milk daily were divided into two groups consisting of twenty animals in each group having 4 replicates with 5 animals in each.

6p trinhthamhodang1213 02-06-2020 15 1   Download

Present study was conducted to explore the effect of milking temperament on milking attributes like milk let down time, milking time, milk flow rate, milk yield, composition in relation to plasma cortisol level and reproductive performance in Sahiwal cows. The experiment was carried out on 88 lactating healthy Sahiwal cows in hot- humid (38) and winter (58) season. The milking temperament was scored and the cows were grouped as docile and restless.

7p nguaconbaynhay5 16-05-2020 14 1   Download

The study was undertaken to determine and compare the activity of important enzymes and its correlation with milk production in cattle. The study was done on each of six Gir, Kankrej and Crossbred cattle. The animals were divided in to three groups viz. 0-90 days of lactation (Group I), 91-180 days of lactation (group II) and 181 till dry stage (group III). Blood was collected aseptically before and after milking and clear plasma was separated and stored until analyzed.

8p nguathienthan4 21-04-2020 10 0   Download

The study was undertaken to determine and compare the biochemical profile and its correlation with milk production in cattle. The study was done on each of six Gir, Kankrej and Crossbred cattle. The animals were divided in to three groups viz. 0-90 days of lactation (Group I), 91-180 days of lactation (Group II) and 181 till dry stage (Group III). Blood was collected aseptically before and after milking. The plasma biochemical estimations were carried out on BS - 120 Chemistry Analyser (Mindray) using the diagnostic kits.

9p nguathienthan4 18-04-2020 15 1   Download

Transition period is a critical period of dairy cow in terms of physiological stress. Rapid body fat mobilization, fatty infiltration of liver and impaired performance are characteristics of late pregnancy and early lactation. Choline acts as a lipotropic factor. The present study was planned to study the effect of high energy levels with or without rumen protected choline before calving on milk production and metabolic profile of crossbred cows.

6p kethamoi4 18-04-2020 12 1   Download