Partitioning genetic variance of metabolizable energy efficiency in dairy cows (2024)

Related Papers

Species, breeds and potential for improvement in animal fibre production in Europe

2016 •

Marco Antonini

View PDF

Book of Abstracts of the 67th Annual Meeting of the European Association for Animal Production; Belfast, UK, 29 August - 1 September 2016

Characteristics of organic dairy farm types in seven European countries

2016 •

Vytautas Ribikauskas

View PDF

Trajectories of changes of pig farms in Vietnam: comparison between a northern and a southern district

2015 •

Guillaume Duteurtre

View PDF

72nd Annual Meeting of the European Federation of Animal Science

NMR spectroscopy as a tool to discriminate between organic and conventional cow milk

2021 •

Matteo Ghetti

View PDF

HAL (Le Centre pour la Communication Scientifique Directe)

The role of sheep and goat breed’s value chain in the rural development in the Mediterranean region

2013 •

Evangelia Sossidou

View PDF

International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork

Approaches to reduce antibiotic resistance in the pork supply chain

lourens heres

View PDF

The domestic livestock resources of Turkey: breed descriptions and status of guard and hunting dogs.

Prof Dr Orhan Yılmaz

The present day inhabitants of modern Turkey arrived in the country with the expansion of the Turkic Empire out from Centra Asia in the middle of the eleventh century. They travelled with their herds and flocks and with the guard and hunting dogs as part of their array of domestic animals. In the one thousand years since their arrival several specialized dog breeds have developed. This paper describes ten such, five of which are molossers, one is a sighthound, one is a scenthound and one is a small Spitz type. Two of the molossers (Kangal and Akbash) have local breed societies or associations and are well known and have breed societies internationally but are not recognized by the Fédération Cynoloqique Internationale (FCI). One molosser (Kars) is registered by the Turkish Standards Institute and another (Koyun) has been recently identified. The sighthound (Tazi) is similar to other Near and Middle East greyhounds. The scenthound (Tarsus Catalburun also known in English as Fork-nose and Turkish Pointer) is little known outside Turkey but is celebrated in its home area for its skills and is finding employment as a sniffer dog for narcotics, explosives and live and dead people. The Spitz-type (Dikkulak) is employed mainly as a household guard dog as are two other breeds of indeterminate type. The Cynology Federation of Turkey was formed in 2006 and is a contract partner of the FCI (and considers there may be as many as twenty dog breeds as opposed to the ten here described). A Turkish NGO known as Let’s Adopt tries to place street dogs. Turkey’s Animal Welfare Act No. 5199 of 2004 seeks to protect animals from torture, abuse and maltreatment but with regard to dogs is mainly concerned with capture-neutering-return of stray street dogs

View PDF

Different management systems in early life have impact on intestinal immune development in pigs

2012 •

Dirkjan Schokker

View PDF

The Domestic Livestock Resources of Turkey: National Horse History, Breed Descriptions and Conservation Status.

Prof Dr Orhan Yılmaz

Horses have been important in Turkey for more than 5000 years. First used as food they were then used in war as cavalry and draught animals, then in agriculture and transport and now largely for leisure and sport. National horse numbers were about 1.3 million in the 1930s having built up from an earlier population reduced by wars in the nineteenth and early part of the twentieth centuries. By 2009 there were about 180 000 horses in the country. Concomitant to reduction in numbers was a narrowing of the gene pool and the total loss of some breeds or distinct populations. Native breeds had evolved to meet various conditions including environmental and economic ones and concurrent changes in these facets of production were in large part responsible for the changes in horse numbers and genetic resources. Since the founding of the Turkish Republic (following the fall of the Ottoman Empire) in 1923 there has been much modification of the natural gene pool driven largely by public institutions in response to new challenges. At least nine breeds of various production functions have been imported and crossed with indigenous resources. In 2011 it is possible to identify 23 Turkish functional breeds whose description is the main thrust of this paper. In response to the threat of extinction and to impoverishment or loss of this important aspect of biodiversity Government has established programmes for conservation and preservation of five native breeds. Government, research institutions and producers should work together to ensure that the local gene pool is preserved and can thus continue to contribute to biodiversity and sustainable livestock production.

View PDF

EAAP

Animal farming acceptability: corporate sustainability projects must embrace a feed-land-fork vision

2021 •

Alfredo J. Escribano (Escribano, A.J.)

View PDF
Partitioning genetic variance of metabolizable energy efficiency in dairy cows (2024)

FAQs

What is energy partitioning in dairy cows? ›

As a first step, energy goes to meet the maintenance requirements of the cow. This includes basic bodily functions like cellular repair, breathing and regulating body temperature. Once those needs are met, additional energy is diverted towards reproduction, milk production, growth or immune function.

What is nutrient partitioning in dairy cows? ›

Nutrient partitioning is the allocation of nutrients from the diet toward bodily functions. The efficiency of nutrient partitioning is crucial for cows because it affects cows' growth rate, milk production, and reproductive performance.

What are the factors affecting breeding efficiency in dairy cattle? ›

Fertility and season : Hot season and high humidity decrease fertility of a cow due to reduction in appetite. Heat stress reduces blood estradiol concentrations, progesterone levels, follicular activity and ovulation.

How do you calculate feed efficiency in dairy cattle? ›

To determine feed efficiency, take the amount of energy-corrected milk produced and divide it by the actual dry matter intake. However, for a successful result, you need an accurate dry matter intake measurement.

What is metabolisable energy in cows? ›

The Metabolisable Energy (ME) is the energy available for use by the cow: it is the energy used for maintenance of body systems, activity, milk production, pregnancy and weight gain. 4.2.1. How energy is measured. Three measures of energy are digestibility, Metabolisable Energy and Total Digestible Nutrients.

What is energy partitioning in animals? ›

The energy partitioning process consists of evaluating the amount of energy ingested by the animal and quantifying the loss of this energy during metabolism.

How does a dairy cow partition nutrients at various physiological stages? ›

Thus, at partitioning, the mammary gland achieves metabolic priority over other tissues to perform the synthesis and secretion of milk. The nutrients deficient in feed are met by partitioning nutrients from body reserves towards mammary gland.

How do you increase nutrient partitioning? ›

Regular exercise, especially resistance training, can improve insulin sensitivity and promote muscle growth. Muscle tissue is a highly metabolically active tissue that utilizes carbohydrates and fats for energy, making it a key player in nutrient partitioning.

What regulates nutrient partitioning and metabolic processes? ›

Hypothalamic control of nutrient partitioning

This control relies on the autonomic nervous system (ANS), which innervates every metabolic tissue and endocrine organ, and the hypothalamic–pituitary axis, which controls the secretion of metabolic hormones (e.g. cortisol, growth hormone).

How to improve breeding efficiency? ›

The breeding efficiency can be greatly enhanced by lowering the interval between successive pregnancies. The wise general policy is to breed for the first time at an early age and to rebreed at almost the earliest opportunity after each pregnancy. In this way, the lifetime efficiency is increased.

What are 5 factors that affect milk production in cows? ›

Factors affecting milk composition
  • Genetic. Milk composition varies considerably among breeds of dairy cattle: Jersey and Guernsey breeds give milk of higher fat and protein content than Shorthorns and Friesians. ...
  • Interval between milkings. ...
  • Stage of lactation. ...
  • Age. ...
  • Feeding regime. ...
  • Disease. ...
  • Completeness of milking.

What is feed efficiency in dairy cows? ›

Feed efficiency (FE) is a simple measure that determines cows' relative ability to turn feed nutrients into milk or milk components. In the simplest terms, it is the pounds of milk produced per pound of dry matter consumed.

How do you calculate milk efficiency? ›

In its most simplified form FE is calculated knowing two metrics, milk production and dry matter intake (FE = Milk ÷ dry matter intake). Because of breed, stage of lactation, season, and genetics a more correct measure of FE is calculated using energy corrected milk production.

What is the difference between feed efficiency and feed conversion ratio? ›

The FCR is the feed input divided by the resulting net production; it indicates the units of feed necessary to yield one unit of biomass. The smaller the FCR, the greater is the feed use efficiency. Feed efficiency is simply the inverse of the FCR – the amount of aquaculture biomass realized per unit of feed input.

What is the most efficient way to feed cattle? ›

Limit feed in a bunk or on frozen ground

When feeding mature cows on frozen ground, distribute feed to provide at least two linear feet per head of space. Processing or grinding hay is the most efficient method for limit-feeding, but rolling out bales on frozen ground is also an option.

What are the energy sources for cows? ›

The most common energy feeds available to cattle are based on high-starch grains (corn, sorghum, barley, wheat), fibrous byproducts (soybean hulls, wheat middlings and beet pulp), or fat sources (oilseeds, animal and vegetable oils).

How does nutrient partitioning work? ›

Abstract. Nutrient partitioning can be defined as the process by which the organism selects fuels for storage (including protein synthesis) or oxidation. Understanding the regulation of energy balance and nutrient partitioning can potentially facilitate the treatment of obesity.

How much energy does a dairy cow need? ›

The maintenance requirement for energy or NEL for a lactating dairy cow, is about 10 megacals of NEL per day.

What is negative energy in dairy cows? ›

During periods of negative energy balance, the cow uses her body fat reserves to sustain her milk production, and this is reflected in a loss of body condition. Excessive negative energy balance, such as cows getting very thin, can lead to health problems and poor fertility.

References

Top Articles
Latest Posts
Article information

Author: Frankie Dare

Last Updated:

Views: 6371

Rating: 4.2 / 5 (53 voted)

Reviews: 92% of readers found this page helpful

Author information

Name: Frankie Dare

Birthday: 2000-01-27

Address: Suite 313 45115 Caridad Freeway, Port Barabaraville, MS 66713

Phone: +3769542039359

Job: Sales Manager

Hobby: Baton twirling, Stand-up comedy, Leather crafting, Rugby, tabletop games, Jigsaw puzzles, Air sports

Introduction: My name is Frankie Dare, I am a funny, beautiful, proud, fair, pleasant, cheerful, enthusiastic person who loves writing and wants to share my knowledge and understanding with you.