Effect of feeding hydrolyzed feather meal and rumen-protected lysine on milk protein and energy utilization in late-lactation Jersey cows

2021 ◽  
Author(s):  
K.A. McLain ◽  
D.L. Morris ◽  
P.J. Kononoff
Keyword(s):  
Milk Protein ◽  
Energy Utilization ◽  
Feather Meal ◽  
Protein And Energy Utilization ◽  
Jersey Cows ◽  
Effect Of Feeding

Milk protein polymorphism in Danish dairy cattle and the influence of genetic variants on milk yield

1990 ◽  
Vol 57 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Anne-Marie Bech ◽  
K. Rotvig Kristiansen
Keyword(s):  
Dairy Cattle ◽  
Milk Fat ◽  
Milk Protein ◽  
Gene Frequencies ◽  
Black And White ◽  
Milk Samples ◽  
Yield Parameters ◽  
Jersey Cows ◽  
Β Lactoglobulin ◽  
Danish Dairy

SummaryIn milk samples from 549 cows of the breeds Danish Jersey, Red Danish Dairy Cattle (RDM), and Black and White Danish Dairy Cattle (SDM) the genetic polymorphisms of the αs1, β and K-cascin and β-lactoglobulin (β-Lg) loci were determined by isoelectric focusing in agarose gels. The results of the screening were comparcd with results obtained by Larsen & Thymann (1966). In addition, the genetic linkage of the three casein loci was studied, and the association between milk protein genotypes and yields in first and second lactations of milk, fat and protein were investigated.The distribution of genotypes of all four milk protein Systems was different from breed to breed.For Jersey cows, significant differences in the gene frequencies from the results of the 1966 investigation were found for αs1 and K-casein and β-Lg. For SDM cows a change in the K-casein frequency had occurred whereas for RDM cows no changes were found.Linkage between some of the casein loci was found within ail three breeds. For the RDM breed the possible linkage between αs1-casein and the other caseins could not be tested bccause nearly ail thc cows were homozygous for the αs1-cascin-B genotypes.β-Casein genotypes were associated with yield parameters in ail breeds. The A2A2 genotype of this protein gave higher yields of milk, fat, and protein in the second lactation than thc A1A1 genotype.

scholarly journals Effect of feeding a palmitic acid–enriched supplement on production responses and nitrogen metabolism of mid-lactating Holstein and Jersey cows

2020 ◽  
Vol 103 (10) ◽  
pp. 8898-8909
Author(s):  
Austin Sears ◽  
Osvaldo Gonzalez ◽  
Anthony Alberto ◽  
Allen Young ◽  
Jonas de Souza ◽  
...  
Keyword(s):  
Palmitic Acid ◽  
Nitrogen Metabolism ◽  
Jersey Cows ◽  
Effect Of Feeding

Influence of Age on Protein and Energy Utilization in Adult Rats

1983 ◽  
Vol 113 (6) ◽  
pp. 1095-1103 ◽  
Author(s):  
Joan E. Fischer ◽  
Nancy L. Canolty
Keyword(s):  
Energy Utilization ◽  
Adult Rats ◽  
Protein And Energy Utilization

Protein and energy utilization of rice milling fractions by rats

1982 ◽  
Vol 31 (4) ◽  
pp. 371-376 ◽  
Author(s):  
Bj�rn O. Eggum ◽  
Bienvenido O. Juliano ◽  
Clodualdo C. Maningat
Keyword(s):  
Energy Utilization ◽  
Protein And Energy Utilization ◽  
Rice Milling

Effect of feeding Leucaena leucocephala leaves and twigs on energy utilization by goats

2008 ◽  
Vol 142 (3-4) ◽  
pp. 330-338 ◽  
Author(s):  
N. Haque ◽  
Saroj Toppo ◽  
M.L. Saraswat ◽  
M.Y. Khan
Keyword(s):  
Leucaena Leucocephala ◽  
Energy Utilization ◽  
Effect Of Feeding
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