Lactation milk yield

Part 2 book "Encyclopedia of animal science" includes content: Lactation, land mammals, species comparisons; lactation, marine mammals; species comparisons lamb - carcass composition and quality lamb - international marketing; livestock breeds, mammals: carnivores, milk composition, species comparisons; milk synthesis, milk yield differences;.... and other contents.

424p oursky09 12-11-2023 7 2   Download

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

The objective of this work was to study the relationship of daily milk yield (DMY) on age and live body weight on of Zaraibi and Shami goats in Sinai, Egypt. Fifty lactated Zaraibi and 60 lactated Shami goats were used to record the DMY (g) during March–August 2009. Age of the both studied breeds was ranged from 24 to 72 months.

3p schindler 30-12-2021 7 0   Download

The present study was carried out using data of first lactation records of 513 Gir cows sired by 75 bulls spread over a period of 34 years (1981 to 2014), maintained at Cattle Breeding Farm, Junagadh Agricultural University, Junagadh.

10p chauchaungayxua10 19-03-2021 9 2   Download

The data records of Murrah buffaloes from history cum pedigree sheets maintained over a period of 24 years(1992-2015) at Buffalo research centre(BRC), LUVAS, Hisar and Animal farm ICAR-CIRB, Hisar, were analysed to estimate heritability(h2 ), genetic and phenotypic correlation among various production and reproduction traits. Production traits whose genetic parameters analysed were Total lactation milk yield (TLMY), 305 days milk yield (305MY)...

7p trinhthamhodang1218 26-02-2021 14 2   Download

he present investigation was conducted to study the effect of various non genetic factors like farm, parity, period of calving and season of calving on different production traits like total lactation milk yield (TLMY), 305 day milk yield (305MY), peak yield (PY), milk yield per day of lactation length (MY/LL) and milk yield per day of calving interval (MY/CI) in Murrah buffaloes. The data analysed include records of 2959 buffaloes, progeny of 219 sires maintained over a period of 24 years (1992-2015) at Buffalo research centre (BRC), LUVAS, Hisar and Animal farm ICAR-CIRB, Hisar.

8p trinhthamhodang1218 26-02-2021 11 2   Download

The aim of this study was to investigate the effect of buffalo’s calf weaning and suckling on reproductive performance of dam. Sixteen down calver Murrah buffaloes were selected and divided into two groups of 8 buffaloes in each group as weaned (T1) and suckling (T2) on the basis of their similarity in lactation milk yield and parities and reproductive performance.

4p trinhthamhodang1218 26-02-2021 9 1   Download

The records pertaining to 1049 lactations of 382, Phule Triveni cows maintained at Research Cum Development Project on Cattle, MPKV, Rahuri over a period of 40 years from1977-2016, were used for research work.

5p trinhthamhodang9 16-12-2020 8 2   Download

The present study was carried out on 07 Sahiwal lactating cows, which were kept under standard feed and managerial conditions during the experimental period in complete lactation. The milk composition was determined by automatic milk analyzer for fat, protein, lactose and SNF and milk yield was recorded for each sampling day.

14p trinhthamhodang1216 19-11-2020 10 1   Download

The present study has been conducted to study the reproductive characteristics, colour pattern effect on various characteristics, effect of season on lactation milk yield and block effect on various characteristics.

9p trinhthamhodang1216 19-11-2020 10 1   Download

S.K.N. College of Agriculture, Jobner dairy farm was purposively selected for the study. The selection of cows was done randomly. The data of 18 F1 crossbred cows (Th x HF) those had completed three consecutive lactation at the college dairy farm was collected for carrying out the present study.

7p nguathienthan8 20-10-2020 8 1   Download

Bovine mastitis contributed significantly towards antimicrobial resistance. A farmers’ participatory field trial was conducted in 100 cows of 12 dairy farms clustered in a locality of Bhubaneswar smart city, Odisha to study the preventive effect of turmeric. Cross-bred Jersey cows with 8 to 10 L milk yield per day, between 2nd to 5th lactation and one 1-2 months old calves at foot without any signs of disease/ disorder including mastitis were the criteria of selection.

5p kethamoi7 26-08-2020 10 2   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

The present investigation is focused on the perceived attribute complexity, measured in terms of cognitive complexity and application complexity of the dairy innovations selected for the study. Cognitive complexity of the innovations is in turn measured as simple and complex and adaptability is measured based on its feasibility as adaptable and un adaptable for the nine innovations selected for the study. A sample of 360 dairy farmers were selected using simple random sampling technique from three districts i.e.

5p angicungduoc6 22-07-2020 8 1   Download

The present study was carried out to find the level of performance of crossbred bulls based on AFC and FLMY of their progenies under the field condition. The data of progenies of 128 crossbred bulls from three different sources BAIF, Pune, GADVASU, Ludhiana and PDC, Meerut formed the experimental units over the period of last 10 year (2006 to 2016).

9p angicungduoc6 22-07-2020 15 2   Download

The dairy enterprise is very crucial for developing countries to generate the income of poor people of rural areas. In present investigation, the milk yields were correlated with different type traits in early, mid lactation and overall. They showed that the negative or positive association with milk yields and composition n at early and mid lactation. In early lactation stage, the type traits such as chest width, rump width, udder depth, rear leg set rear view, rear udder height, fore udder attachment and front teat position were positively associated with milk production (yields).

7p angicungduoc6 22-07-2020 13 2   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

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