scholarly journals Productive characteristics in dairy buffalo (Bubalus bubalis) in the Eastern Amazon

2020 ◽  
Vol 72 (3) ◽  
pp. 947-954
Author(s):  
L.C. Marques ◽  
A.S. Matos ◽  
J.S. Costa ◽  
C.S. Silva ◽  
R.N.C. Camargo Júnior ◽  
...  
Keyword(s):  
Milk Production ◽  
Production Systems ◽  
Principal Component ◽  
Bubalus Bubalis ◽  
Genetic Group ◽  
Lactation Period ◽  
Production Traits ◽  
Phenotypic Characteristics ◽  
Factors Affecting ◽  
Dairy Buffalo

ABSTRACT The objective of this study was to determine factors affecting phenotypic characteristics related to milk production and reproductive efficiency of dairy buffalo. Phenotypic records of 2,459 Murrah, Mediterranean and crossbred buffaloes from the Embrapa Eastern Amazônia herd, from 1969 to 2013 were used. Traits included: total milk production during lactation (TMP), milk production corrected for 305 days (P305); cow weight at calving (CW), fat milk percentage (F), age at first calving (AFC), calving interval (CI), calf birth weight (BW), as well as lactation (LP) and service periods (SP). Most traits were affected by genetic group as well as year and season or interaction between them. Genetic group affected F, CI, SP and CW. Very young and older cows showed poorer production traits. There was interaction between season and year for F, CI and CW. Correlations traits were generally medium to low. The principal component analysis showed that higher fat milk percentage was associated with higher percentage of Murrah breed, longer lactation period and older cows. Phenotypic characteristics in buffaloes reared in the Brazilian Amazon were significantly affected by genetic and management factors. This information can be used to help build sustainable production systems for the region and guide farmer decisions.

scholarly journals Factors affecting heat tolerance in crossbred cattle in central Brazil

2014 ◽  
Vol 15 (2) ◽  
pp. 152-158 ◽  
Author(s):  
Concepta Margaret Mcmanus ◽  
Helder Louvandini ◽  
Tiago Prado Paim ◽  
Flávia Cristina Paula e Silva ◽  
Francisco Ernesto Moreno Bernal
Keyword(s):  
Milk Production ◽  
Bos Indicus ◽  
Test Group ◽  
Genetic Group ◽  
Lactation Period ◽  
The Sun ◽  
Factors Affecting ◽  
Central Brazil ◽  
Genetic Groups ◽  
Daily Milk Production

This study compared the adaptation traits in common crosses of crossbred dairy cattle in central Brazil. Twenty animals of each of three genetic groups were used: zebu (Bos indicus), Simmental x Zebu (SZ) and Holstein x Zebu (HZ). The test measured variations in rectal temperature (RT), respiration rate (RR) and heart rate (HR) of animals in the shade and after exposure to the sun, as well as mean daily milk production throughout the lactation period. The procedure was repeated three times. There were significant interactions between test group and genetic group for the traits investigated and the correlations among traits were low. The RR of the crossbred groups may be controlling body temperature in such a way as not to cause an increase in RT. Milk production influenced RR in crossbred cows exposed to the sun, confirming their poorer adaptation in comparison with zebu cows. We observed that the adaptation can be measured in terms of production within the same genetic group. In conclusion, the crosses with European breeds produced more milk than zebu, although they were influenced by heat/solar radiation.

Effect of Breed and Some Non - Genetic Factors on Milk Production and Some Proportions of Its Chemical Components in Two Breeds of Local Sheep

2020 ◽  
Vol 10 (1) ◽  
pp. 227-231
Author(s):  
Rahman Hussein AL-Qasimi ◽  
Shatha Mohammed Abbas ◽  
Allawi L.D. AL-Khauzai
Keyword(s):  
Milk Production ◽  
Genetic Factors ◽  
Chemical Components ◽  
Lactation Period ◽  
Production Traits ◽  
Milk Production Traits ◽  
Fat Percentage ◽  
Awassi Sheep ◽  
Total Milk ◽  
Milk Components

The study was carried out on 19 ewes of local Awassi sheep and 12ewes local Arabi sheep in the Al-kafeel sheep station Karbala, to determine the effect of breed and some non-genetic factors such as (sex of the lamb, type of birth, age and weight of ewes at birth) on daily and total milk production and lactation period and some of milk components (fat, protein and lactose). The results showed that a significant effect (P <0.05) of the breed on milk production traits where Awassi sheep recorded the highest mean (0.91 kg , 101.63 kg , 104.86 day) compared to the Arabi sheep she was means (0.77 kg , 88.15 kg , 99.15 day) respectively. As well as in proportions of milk components with mean( 5.1 , 4.90 , 5.51) % respectively compared to the Arabi sheep (4.70 . 4.20 . 4.89) ewes with male lambs also exceeded superior ewes with female lambs in daily and total milk production and the lactation period the sex of the lamb did not affect the proportions of milk components the weight of the ewes had a significant effect (P <0.05) in milk production attributes with superior weight of ewes on lower ewes and did not affect the proportions of milk ingredients except for lactose. The type of birth and the age of the ewes did not have a significant effect in all the studied traits except for the superiority (P<0.05) of young ewes on age ewes in the fat percentage of milk.

scholarly journals Factors affecting the milk production of dairy cattle in northern rural areas of Bangladesh

2015 ◽  
Vol 4 (2) ◽  
pp. 41-45 ◽  
Author(s):  
MR Begum ◽  
M Anaruzzaman ◽  
MSI Khan ◽  
M Yousuf
Keyword(s):  
Body Weight ◽  
Dairy Cattle ◽  
Milk Production ◽  
Rural Areas ◽  
Binary Logistic Regression ◽  
Cross Sectional Study ◽  
Lactation Period ◽  
Cross Sectional ◽  
Age At First Calving ◽  
Factors Affecting

A cross sectional study was conducted to observe the factors affecting the productive performance of dairy cattle from northern rural areas of Bangladesh during July and September 2013. Data of 105 cows, 85 (80.95%) from local and 20 (19.05%) cows from cross breed, were randomly selected for the study. A binary logistic regression, expressed by odds ratio with 95% confidence interval, was done to determine the association of daily milk production categorized into ? 2 and > 2 liters (L), based on median, with the significant explanatory variables of body weight, age at first calving, lactation period, vitamin use, type of floor and milking person. The result demonstrated that the probability of milk production of >2 L was 6.16, 4.5, 20.65 and 5.7 times higher from the with animal body weight of >140 kg, age at first calving of >36 m, lactation period of >8 m and vitamin use than that of body weight of 140 kg, age at first calving of ?36 m, lactation period of ? 8 m, and not vitamin used respectively. The chance of milk production of > 2 L was 0.25 and 0.22 times lower for mud floor, and owner milking than that of brick floor and gowala (professional milking person) respectively. DOI: http://dx.doi.org/10.3329/ijarit.v4i2.22646 Int. J. Agril. Res. Innov. & Tech. 4 (2): 41-45, December, 2014

Genotype Environment Interaction on Milk Production Traits of Crossbred Dairy Cows under Tropical Climatic Condition of India

2021 ◽  
Author(s):  
Rajalaxmi Behera ◽  
Ajoy Mandal ◽  
Saroj Rai ◽  
M. Karunakaran ◽  
Mohan Mondal ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Vital Role ◽  
Genetic Group ◽  
Environment Interaction ◽  
Production Traits ◽  
Crossbred Cows ◽  
Genotype Environment Interaction ◽  
Heat Tolerant

Background: Genotype environment interaction plays vital role in animal productivity. Heat stress is one of the major environmental stressor affecting milk production and measured in terms of temperature humidity index (THI). Indian milk industry largely depends on crossbred cows bearing different degree of exotic inheritance. Thus, the role of genotype (genetic group) of the crossbred cows and environment (THI) interaction plays vital role in Indian climate which is mostly tropical in nature. Therefore, study was undertaken to examine the existence of genetic group × THI in crossbred dairy cows reared at institute herd of ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal. Methods: A total of 12364 records each of monthly milk yield (MMY) and average daily milk yield in a month (AMY) of crossbred cows spanned over twenty two years (1994-2015) and weather parameters(temperature and relative humidity) for the corresponding years were collected from institute records. The data were classified into 8 genetic groups according to the genetic composition and 3 THI groups (THI less than 72, THI 72-78 and THI above 78). The interaction model was used to study the G×E interaction study using least squares analysis. Result: Effect of non-genetic factors (parity, period of calving and stage of lactation) was found to be highly significant (P less than 0.01) and genetic group × THI was significant (P less than 0.05) of on both MMY and AMY. Genetic group bearing 50% Jersey and 50% Red Sindhi or Tharparkar were the most heat tolerant breeds. Jersey crossbred cows were more heat tolerant than Holstein crossbred cows. Crossbred cows with 50% Jersey inheritance performed better than higher Jersey inheritance during periods of THI above 72.

PCR-SSCP analysis of leptin gene and its association with milk production traits in river buffalo (Bubalus bubalis)

2012 ◽  
Vol 44 (7) ◽  
pp. 1587-1592 ◽  
Author(s):  
Tushar Tanpure ◽  
Praveen Kumar Dubey ◽  
Kunwar Pal Singh ◽  
Periasamy Kathiravan ◽  
Bishnu Prasad Mishra ◽  
...  
Keyword(s):  
Milk Production ◽  
Bubalus Bubalis ◽  
Sscp Analysis ◽  
River Buffalo ◽  
Production Traits ◽  
Milk Production Traits

scholarly journals The Effect of Different Levels of Protein Supplementation in Rations on Feed Consumption, Milk Yield and Milk Composition in Anatolian Buffaloes of Different Ages [Bubalus Bubalis (Iinnaeus, 1758)].

2021 ◽  
Author(s):  
Taşkın DEĞİRMENCİOĞLU
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Bubalus Bubalis ◽  
Milk Composition ◽  
Protein Supplementation ◽  
Feed Consumption ◽  
Lactation Period ◽  
Group 4 ◽  
Different Ages ◽  
Yield Values

Abstract BackgroundIn this study, it was aimed to determine the optimal crude protein level in the ration for milk production and milk composition in milk buffaloes of different ages.Materials, Methods & Results A total of 20 Anatolian buffaloes were used as animal material.Buffalo cows were tested in the early lactation period (lactation period; 65-80 days).Water buffaloes are divided into four groups as young and adult; First, second groups (those who gave birth to the first), third and fourth groups (those who gave birth to the second and more).5 compartments are allocated for each group.In the trial, buffalo cows with two different trial rations R1; (17.82% CP) and R2; (19.18% CP) were fed.Especially during the experiment, the total DM consumption of adult buffaloes in group 4 and group 3 increased when compared with young buffaloes (p <0.05). As a result of the research, the milk yield values determined in milk buffaloes fed with the R2 ration were found to be higher than the values found in milk buffaloes fed with the R1 ration (6.34-5.64kg / day) (p <0.05).However, the effect of R1 and R2 rations on milk production was similar in young buffaloes (4.22-4.36 kg / day) (p> 0.05).

scholarly journals Genomic Loci Affecting Milk Production in German Black Pied Cattle (DSN)

2021 ◽  
Vol 12 ◽  
Author(s):  
Paula Korkuć ◽  
Danny Arends ◽  
Katharina May ◽  
Sven König ◽  
Gudrun A. Brockmann
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Lactation Period ◽  
Production Traits ◽  
Linear Regression Models ◽  
Milk Production Traits ◽  
Milk Traits ◽  
Dual Purpose ◽  
A Genome ◽  
Reproduction Traits

German Black Pied cattle (DSN) is an endangered population of about 2,550 dual-purpose cattle in Germany. Having a milk yield of about 2,500 kg less than the predominant dairy breed Holstein, the preservation of DSN is supported by the German government and the EU. The identification of the genomic loci affecting milk production in DSN can provide a basis for selection decisions for genetic improvement of DSN in order to increase market chances through the improvement of milk yield. A genome-wide association analysis of 30 milk traits was conducted in different lactation periods and numbers. Association using multiple linear regression models in R was performed on 1,490 DSN cattle genotyped with BovineSNP50 SNP-chip. 41 significant and 20 suggestive SNPs affecting milk production traits in DSN were identified, as well as 15 additional SNPs for protein content which are less reliable due to high inflation. The most significant effects on milk yield in DSN were detected on chromosomes 1, 6, and 20. The region on chromosome 6 was located nearby the casein gene cluster and the corresponding haplotype overlapped the CSN3 gene (casein kappa). Associations for fat and protein yield and content were also detected. High correlation between traits of the same lactation period or number led to some SNPs being significant for multiple investigated traits. Half of all identified SNPs have been reported in other studies, previously. 15 SNPs were associated with the same traits in other breeds. The other associated SNPs have been reported previously for traits such as exterior, health, meat and carcass, production, and reproduction traits. No association could be detected between DGAT1 and other known milk genes with milk production traits despite the close relationship between DSN and Holstein. The results of this study confirmed that many SNPs identified in other breeds as associated with milk traits also affect milk traits in dual-purpose DSN cattle and can be used for further genetic analysis to identify genes and causal variants that affect milk production in DSN cattle.

Some production traits and phenotypic relationships betweenudder and production traits of Hair goats

2016 ◽  
Author(s):  
Okan Atay ◽  
Özdal Gokdal
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Live Weight ◽  
Lactation Period ◽  
Production Traits ◽  
Mean Values ◽  
Lactation Length ◽  
Animal Material ◽  
Daily Milk Yield ◽  
Production Characteristics

The study was conducted to determine the production characteristics and to find out the phenotypic relationships between udder and milk production traits in Hair goats. A total of 403 Hair Goats under extensive conditions of Çine town of Aydin province of Turkey were constituted the animal material of the study. The live weights of all goats were recorded just before breeding season. Milk was measured in every month according to the basis of morning or evening milking in a day to estimation of milk yields. Live weights of kids were recorded monthly intervals. Measurements for udder characteristics were determined for two times at 30th and at 180th of the lactation period. Average lactation length, lactation milk yield and daily milk yield of goats were 192.4 days, 139.1 kg and 0.7 kg, respectively. The live weights at birth, 30th, 60th, 90th and 120th days of goat kids were 3.1, 8.6, 13.9, 19.1 and 24.5 kg, respectively. Mean values of withers height, body length and live weight of goats were measured as 73.2 cm, 71.3 cm and 54.5 kg, respectively. Udder and teat characteristics of goats were found positively correlated with milk production characteristics both 30th and 180th days of the lactation period. It can be concluded that Hair goats in extensive conditions had a substantial level of milk yield and their kids had sufficient levels of live weight gains. Furthermore, the udder measurements at the beginning of the lactation could be used for identifying the differences among does.

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