scholarly journals Dynamics of Genealogical Structure of Breeding Stock of Black-and-White Cattle Population of the Vologda Oblast and Prospects for its Development

2019 ◽  
Author(s):  
Natalia Abramova ◽  
Olga Khromova ◽  
Galina Vlasova ◽  
Lyudmila Bogoradova
Keyword(s):  
Cattle Population ◽  
Breeding Stock ◽  
Vologda Oblast ◽  
Black And White ◽  
White Cattle

scholarly journals Study of SNP 775C>T polymorphism within the bovine ITGB2 gene in Polish Black-and-White cattle and in local breeds of cattle

2008 ◽  
Vol 52 (No. 3) ◽  
pp. 57-61
Author(s):  
U. Czarnik ◽  
M. Galiński ◽  
T. Zabolewicz ◽  
Ch.S. Pareek
Keyword(s):  
Genetic Resource ◽  
Farm Animals ◽  
Cattle Population ◽  
Black And White ◽  
International Programme ◽  
Diversity Preservation ◽  
High Prevalence ◽  
White Cattle ◽  
Resource Diversity ◽  
I Gene

The present study addresses the characteristics of the frequency and segregation of alleles determining the SNP 775C>T polymorphism within the bovine <i>ITGB2</i> gene in the Black-and-White cattle population as well as in two endemic breeds of Polish Red and Polish White-Back cattle population qualified to the international programme of genetic resource diversity preservation in farm animals. The SNP 775C>T polymorphism revealed three amplified restriction fragments of 31 bp, 77 bp and 108 bp, forming three genotypes <i>CC</i> (31 bp, 77 bp), <i>CT</i> (31 bp, 77 bp, 108 bp) and <i>TT</i> (108 bp). A group of randomly selected Black-and-White cows was characterized by a negligible percentage of homozygous genotypes <i>TT</i> (5.1%) and by a prevailing percentage of heterozygous <i>CT</i> (60.1%) and homozygous <i>CC</i> (34.8%). In contrast, the between breeds analysis revealed that cows involved in the programme of genetic diversity preservation had a high prevalence of homozygotes <i>CC</i> (Polish Red &minus; 55.9%, Polish White-Back &minus; 60.0%), and a low percentage of homozygotes <i>TT</i> (Polish Red &minus; 8.8%, Polish White-Back &minus; 5.7%) in comparison with the Black-and-White cattle population. The degree of homozygosity in groups of Polish White-Back cows (65.7%) and Polish Red cows (64.7%) was remarkably higher than that of the Black-and-White cows (39.9%).

Dynamics of milk productivity of cows of Black-and-White breed by lactations

2020 ◽  
pp. 35-42 ◽  
Author(s):  
N. Kostomakhin ◽  
O. Voronkova ◽  
M. Gabedava ◽  
E. Ermoshyna
Keyword(s):  
Milk Yield ◽  
Dairy Farming ◽  
Milk Productivity ◽  
Genetic Progress ◽  
Breeding Stock ◽  
Black And White ◽  
White Breed ◽  
White Cattle ◽  
Kaluga Region

The age of cow use is of big importance for the practice of dairy farming, since earlier culling of cows leads to a lack of milk, and later culling leads to the decrease in genetic progress. The purpose of the researches was to determine the dynamics of milk productivity of cows of Black-and-White breed by lactations. The researches have been carried out in the OJSC Breeding Farm “Oktyabrsky” in the Ferzikovsky district in the Kaluga region, where cattle of Black-and-White breed are bred. The object of researches was the breeding stock of Black-and-White cattle that had been lactating for five lactations. It has been found that the increase in milk yield occurred from I to IV lactation. For example, first-calf heifers had 6154,9 kg of milk yield and were statistically significantly inferior to cows of II lactation by 242,8 kg (P < 0,001) or by 3,9 %. The superiority of cows of III lactation over first-calf heifers in milk yield was 466,2 kg (P < 0,001) or 7,6 %. The maximum differences in milk yield between first-calf heifers and cows IV lactation were 704,8 kg (P < 0,001) or 11,5 %. Cows of V lactation also significantly outperformed of fi rst-calf heifers in milk yield by 381,6 kg (P < 0,01) or 6,2 %, but their milk yield was lower than that of cows during III and IV lactation. It has been revealed in the course of research that cows of all the studied lactations were characterized by sufficiently high milk productivity for cattle of Black-and-White breed. There was the increase in milk yield with the age of animals. The increase in milk yields dynamically occurs till IV lactation, and then their decrease is observed.

scholarly journals Effect of Holstein Crossbreeding in the French Black and White Cattle Population

1993 ◽  
Vol 76 (4) ◽  
pp. 1157-1162 ◽  
Author(s):  
Didier Boichard ◽  
Bernard Bonaiti ◽  
Anne Barbat
Keyword(s):  
Cattle Population ◽  
Black And White ◽  
White Cattle

scholarly journals Population Parameters of Productive Characteristics of the Black-and-White Cattle Breed in the Vologda Oblast

2018 ◽  
Author(s):  
Natalia Abramova ◽  
Galina Vlasova ◽  
Olga Khromova ◽  
Lyudmila Bogoradova
Keyword(s):  
Cattle Breed ◽  
Population Parameters ◽  
Vologda Oblast ◽  
Black And White ◽  
White Cattle

The improvement of the type Karatomar of Black-and-White cattle breed under the conditions of Northern Kazakhstan

2020 ◽  
pp. 23-31
Author(s):  
L. Ovchinnikova ◽  
E. Babich
Keyword(s):  
Research Work ◽  
Cattle Breed ◽  
Reproductive Traits ◽  
Farm Animals ◽  
Development Indicators ◽  
Black And White ◽  
Breed Type ◽  
Northern Kazakhstan ◽  
White Breed ◽  
White Cattle

In the Republic of Kazakhstan over the past decade positive changes have been observed in increasing the number of farm animals, increasing their productivity, and increasing the gross production of milk, meat and other products. At the same time the development of dairy cattle breeding is mainly due to the breeding of Black-and-White, Red Steppe, Simmental breeds and their intra-breed types as well as imported from abroad Holstein breed. The purpose of the research was to analyze ways to improve the intra-breed type Karatomar of Black-and-White breed in Northern Kazakhstan. Research work has been carried out on breeding animals such as Karatomar type cattle of Black-and-White breed in LLP “Experimental farm Zarechnoe” in the Kostanay district in the Kostanay region. The dynamics of growth and development indicators, reproductive traits of heifers of a new intra-breed type Karatomar of Black-and-White cattle have been studied. A comprehensive assessment of their economically useful traits in the first lactation, determined by the resistance of animals to climatic and forage conditions, the efficiency of breeding of animals of different genotypes has been conducted. It has been found that the replacement heifers – daughters of American breeding sires inherited precocity and showed higher growth energy after 6 months of age and continued to grow rapidly until 18 months. The advantage in metabolism was in the daughters of Holstein sires of the American selection Orbit 4078, and the increased immune status of the organism in the daughters of the sire of the domestic selection Yamal 975 as the most adapted to the conditions of Northern Kazakhstan. The best ability to increasing the milk yield, stable lactation activity, high milk productivity, gross content of dry matter and nonfat milk solids have been characterized by the daughters of sires of the American selection Orbit 4078 and Lowrider 4129. Analysis of economic indicators of milk production has been shown that from cows – daughters of sires Orbit 4078 and Lowrider 4129 for 305 days of lactation received 15,8 and 15,2 % more milk of base fat, the expenditures of EFU per 1 kg of production was lower by 10,2 and 5,9 %. A higher level of profitability has been observed in the group of daughters of the sires Orbit 4078 – 35,5 % and Lowrider 4129 – 33,1 %, which was 8,5 and 10,8 % higher than in the group of daughters of the sire Yamal 975.

scholarly journals Productive Potency of the Endangered Taro White Cattle Population Reared Under Conservation Management System in Bali, Indonesia

2020 ◽  
Vol 8 (4) ◽  
Author(s):  
Anak Agung Oka ◽  
I Gusti Agung Arta Putra ◽  
I Wayan Suarna ◽  
Lindawati Doloksaribu ◽  
I Ketut Puja
Keyword(s):  
Management System ◽  
Conservation Management ◽  
Cattle Population ◽  
White Cattle

scholarly journals Comparative assessment of productive qualities of holsteinized black-and-white cattle by lines

2021 ◽  
Vol 848 (1) ◽  
pp. 012082
Author(s):  
O E Likhodeevskaya ◽  
O A Lihodeevskaya ◽  
O V Gorelik ◽  
T N Makarova ◽  
I A Timinskaya
Keyword(s):  
Comparative Assessment ◽  
Black And White ◽  
White Cattle
Sign in / Sign up

Export Citation Format

Share Document