Lifetime milk production efficiency of jersey cows under sub-temperate conditions

2014 ◽  
Vol 48 (3) ◽  
pp. 286 ◽  
Author(s):  
Krishanender Dinesh ◽  
Y.P. Thakur ◽  
S. Katoch ◽  
Varun Sankhyan
Keyword(s):  
Milk Production ◽  
Production Efficiency ◽  
Jersey Cows

Milk Production Efficiency as Dependent on the Scale of Production and Cow Management Systems on Dairy Farms

2007 ◽  
Vol 22 (1) ◽  
pp. 50-60 ◽  
Author(s):  
Marek Wroński ◽  
Marek Cichocki ◽  
Katarzyna Borkowska ◽  
Jan Redmer
Keyword(s):  
Milk Production ◽  
Production Efficiency ◽  
Dairy Farms ◽  
Management Systems

scholarly journals SLC27A1 GENE POLYMORPHISM ANALYSIS IN RELATION TO MILK PRODUCTION TRAITS IN JERSEY COWS

2016 ◽  
Vol 326 (38) ◽  
pp. 81-88
Author(s):  
Hanna KULIG ◽  
◽  
Tomasz KAŁŁAS ◽  
Inga KOWALEWSKA-ŁUCZAK ◽  
Melania KUNICKA ◽  
...  
Keyword(s):  
Gene Polymorphism ◽  
Milk Production ◽  
Polymorphism Analysis ◽  
Production Traits ◽  
Milk Production Traits ◽  
Jersey Cows

Genetic line × concentrate level interactions for milk production and feed efficiency in dairy cattle

1992 ◽  
Vol 72 (2) ◽  
pp. 227-236 ◽  
Author(s):  
S. Wang ◽  
G. L. Roy ◽  
A. J. Lee ◽  
A. J. McAllister ◽  
T. R. Batra ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Milk Yield ◽  
Feed Efficiency ◽  
Production Efficiency ◽  
Breeding Value ◽  
Environment Interaction ◽  
Genetic Line ◽  
Breeding Values ◽  
Concentrate Level

Early first lactation data from 2230 cows of five research herds of Agriculture Canada were used to study the interactions of genetic line by concentrate level, and sire by concentrate level and to estimate breeding values of sires. The genetic lines were defined as Holstein (H), Ayrshire (A), and H × A or A × H (C). The interactions of sire by concentrate level were studied separately using progeny of five different mating groups: G1, H sires mated to H cows; G2, H sires mated to H, A and C cows; G3, A sires mated to A cows; G4, A sires mated to H, A and C cows; and G5, C sires mated to C cows. The interactions of genetic line by concentrate were significant (P < 0.05) for 56- to 112-d milk yield (MY112), corrected 56-to 112-d milk yield (CMY112) and feed efficiency (EFMY112 = MY112/TDN consumption). H and C cows produced more milk and were more efficient than A cows when fed high levels of concentrate. The H cattle possess a greater capacity to convert the concentrate into milk, while A cattle reach maximum milk production earlier than H cattle. The interactions of sire by concentrate were statistically significant for MY112, EFMY112 and CMY112 in G1 (P < 0.01), and G2 (P < 0.01). The breeding values of sires for MY112 were estimated using BLUP for all of the H line (BLUP-T), for half of the population consuming low amounts of concentrate (BLUP-L) and for the other half consuming high amounts (BLUP-H). A significant reranking of sires was found among the three groups. Key words: Genotype × environment interaction, milk production, efficiency, breeding value, dairy cattle

Dairy, Science, Society, and the Environment

2017 ◽  
Author(s):  
Christopher Lu
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Milk Production ◽  
Production Efficiency ◽  
Dairy Industry ◽  
Human Society ◽  
Gas Emissions ◽  
Production And Consumption ◽  
Organic Dairy ◽  
Dairy Animals

Dairy has intertwined with human society since the beginning of civilization. It evolves from art in ancient society to science in the modern world. Its roles in nutrition and health are underscored by the continuous increase in global consumption. Milk production increased by almost 50% in just the past quarter century alone. Population growth, income rise, nutritional awareness, and science and technology advancement contributed to a continuous trend of increased milk production and consumption globally. With a fourfold increase in milk production per cow since the 1940s, the contemporary dairy industry produces more milk with fewer cows, and consumes less feed and water per liter of milk produced. The dairy sector is diversified, as people from a wider geographical distribution are consuming milk, from cattle to species such as buffalo, goat, sheep, and camel. The dairy industry continues to experience structural changes that impact society, economy, and environment. Organic dairy emerged in the 1990s as consumers increasingly began viewing it as an appropriate way of both farming and rural living. Animal welfare, environmental preservation, product safety, and health benefit are important considerations in consuming and producing organic dairy products. Large dairy operations have encountered many environmental issues related to elevated greenhouse gas emissions. Dairy cattle are second only to beef cattle as the largest livestock contributors in methane emission. Disparity in greenhouse gas emissions per dairy animal among geographical regions can be attributed to production efficiency. Although a number of scientific advancements have implications in the inhibition of methanogenesis, improvements in production efficiency through feeding, nutrition, genetic selection, and management remain promising for the mitigation of greenhouse gas emissions from dairy animals. This article describes the trends in milk production and consumption, the debates over the role of milk in human nutrition, the global outlook of organic dairy, the abatement of greenhouse gas emissions from dairy animals, as well as scientific and technological developments in nutrition, genetics, reproduction, and management in the dairy sector.

scholarly journals Potential roles of nitrate and live yeast culture in suppressing methane emission and influencing ruminal fermentation, digestibility, and milk production in lactating Jersey cows

2019 ◽  
Vol 102 (7) ◽  
pp. 6144-6156 ◽  
Author(s):  
R.A. Meller ◽  
B.A. Wenner ◽  
J. Ashworth ◽  
A.M. Gehman ◽  
J. Lakritz ◽  
...  
Keyword(s):  
Milk Production ◽  
Methane Emission ◽  
Yeast Culture ◽  
Ruminal Fermentation ◽  
Jersey Cows ◽  
Live Yeast

scholarly journals Effects of Milk Protein Genotypes on the Variation for Milk Production Traits of Holstein and Jersey Cows in California

1997 ◽  
Vol 80 (8) ◽  
pp. 1776-1785 ◽  
Author(s):  
Matti Ojala ◽  
Thomas R. Famula ◽  
Juan F. Medrano
Keyword(s):  
Milk Production ◽  
Milk Protein ◽  
Production Traits ◽  
Milk Production Traits ◽  
Jersey Cows

Milk production, milk composition, rate of milking and grazing behaviour of dairy cows grazing two tropical grass pastures under a leader and follower system

1978 ◽  
Vol 18 (90) ◽  
pp. 5 ◽  
Author(s):  
TH Stobbs
Keyword(s):  
Milk Production ◽  
Latin Square ◽  
Milk Composition ◽  
Panicum Maximum ◽  
Tropical Pastures ◽  
Rhodes Grass ◽  
Bite Size ◽  
Leaders And Followers ◽  
Jersey Cows ◽  
Grazing Behaviour

Milk production, milk composition, rate of milking and grazing behaviour were measured for lactating Jersey cows having both the first opportunity to graze (leaders) and also when offered the remaining herbage (followers) from 3-week regrowths of two nitrogen-fertilized tropical pastures, Rhodes grass (Choris gayana cv. Pioneer) and Gatton panic (Panicum maximum cv. Gatton). Twenty-four cows were used in a latin-square design with experimental periods of 14 days. Both leaders and followers were allocated 40 kg DM cow-1 day-1. Leader cows produced 8.0 kg milk cow-1 day-1 compared with 5.8 kg milk cow-1 day-1 for followers, a difference of 38 per cent. Both leader and follower cows grazing Gatton panic produced more milk than cows grazing Rhodes grass. Milk from leader cows contained a higher percentage of solids-not-fat and protein and a lower butterfat percentage indicating a higher intake of digestible nutrients. Cows showed a preference for leaf, and after easily accessible leaf was removed by leader cows the follower cows had a small bite size. Follower cows partially compensated by increasing grazing time, mainly at night. Follower cows had a longer let-down time and a longer milking time per kilogram of milk produced. Milk production was linearly related to bite size and availability and accessibility of leaf were considered to be the main factors influencing production.

scholarly journals Improved milk production efficiency in early lactation dairy cattle with dietary addition of a developmental fibrolytic enzyme additive

2011 ◽  
Vol 94 (2) ◽  
pp. 899-907 ◽  
Author(s):  
L. Holtshausen ◽  
Y.-H. Chung ◽  
H. Gerardo-Cuervo ◽  
M. Oba ◽  
K.A. Beauchemin
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Production Efficiency ◽  
Early Lactation

scholarly journals Milk production and composition in Danish Holstein, Danish Red, and Danish Jersey cows supplemented with saturated or unsaturated fat

2013 ◽  
Vol 155 (1) ◽  
pp. 60-70 ◽  
Author(s):  
Martin Riis Weisbjerg ◽  
Mette Krogh Larsen ◽  
Lone Hymøller ◽  
Mette Thorhauge ◽  
Ulla Kidmose ◽  
...  
Keyword(s):  
Milk Production ◽  
Unsaturated Fat ◽  
Jersey Cows
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