Šimkienė, Aldona; Juozaitienė, Vida; Juozaitis, Arūnas; Šimkus, Almantas; Žilaitis, Vytuolis; Urbonavičius, Alvidas
March 2009
Veterinarija ir Zootechnika;2009, Vol. 45 Issue 67, p81
Academic Journal
This investigation evaluated the correlation between lactose content in milk and cows productivity, and milk composition. In addition, the relationship between lactose content in milk and reproductive traits of the cows, and the heritability of lactose content in cows milk were estimated. Correlation between lactose content (%) and amount of milk was statistically significant slightly positive (r=0.206; p<0.01). Comparable results were determined between lactose content in milk and milk fat content (r=0.105; p<0.01). Correlation between lactose content and milk protein content was statistically significant slightly negative (r=-0.128; p<0.001). Negative average on phenotypical correlation was estimated between lactose content and somatic cell count in milk (from r= -0.36 to -0.588) Average negative statistically significant correlation between lactose content in cows milk and servis period was estimated (r=-0.401; p<0.01). Average negative correlation coefficient between two calving period and lactose content in milk (r=-0.368; p<0.01) was estimated. Slight negative statistically significant correlation between insemination index and lactose content in milk was recorded (r=-0.175; p<0.01). Heritability coefficient (h²) of lactose content in cow's milk was 0.279±0.001 and average negative genetic correlation between somatic cell counts and lactose content in milk was registered (rg = -0.43; p<0.01). These findings suggest possibilities of cows selection according lactose content in milk. Selection based on lactose content could help to increase the effectiveness of selection of cows according somatic cells count.


Related Articles

  • Study regarding the influence of parity, age at first calving and farm management on the milk yield and composition in Romanian Black and White cows. Cismaş, Traian; Acatincăi, Stelian; Cziszter, Ludovic-Toma; Erina, Silvia; Baul, Simona; Tripon, Iulian; Răducan, Gabriel // Scientific Papers: Animal Science & Biotechnologies / Lucrari St;Dec2012, Vol. 45 Issue 2, p289 

    The aim of the paper was to study the effects of parity, age at first calving and farm management on the milk yield and milk composition in 421 Romanian Black and White cows from the South-eastern Romania. Milk yield, milk fat yield, milk protein yield, and milk lactose yield were studied. Cows...

  • RELATION OF UDDER QUARTER DEVELOPMENT WITH DAILY MILK YIELD, COMPOSITION AND SOMATIC CELL COUNT. Šlyžius, Evaldas; Juozaitienė, Vida; Tušas, Saulius; Juozaitis, Arūnas; Žymantienė, Judita // Veterinarija ir Zootechnika;2013, Vol. 63 Issue 85, following p62 

    The aim of this study was to investigate the impact of the development of udder quarters on cow productivity and milk composition and somatic cell count in milk. The rear quarters produced more milk with higher fat, protein and lactose content than the front quarters but in urea content there...

  • Physical and Chemical Charateristics of Milk. Variation due to Microwave Radiation. Dumuta, Anca; Giurgiulescu, Liviu; Mihaly-Cozmuta, Leonard; Vosgan, Zorica // Croatica Chemica Acta;Oct2011, Vol. 84 Issue 3, p429 

    The purpose of this paper was to see what effects microwaves have on the physical-chemical composition of the raw milk. The results showed that the averages of fat, protein, dry substance and lactose concentrations decreased during the microwave exposure while the density averages increased....

  • Variation Analysis of Cow Milk Composition Quality Depending on Year, Season and Location in Romania. Mironeasa, Silvia; Codina, Georgiana G.; Mironeasa, Costel // Bulletin of the University of Agricultural Sciences & Veterinary;2011, Vol. 68 Issue 1/2, p225 

    The effects of regional environment; years and seasons on the milk technological quality (contents of fat; protein, lactose, solids-non-fat;, somatic cell number and number of total germs) were studied by multivariate statistical methods. Two different counties from Romania monitored in the...

  • MILK INTOLERANCE: A BIG TROUBLE FOR LITTLE PATIENTS. Accomando, Salvatore; Serraino, Francesca; Antona, Roberta; Corsello, Giovanni // Capsula Eburnea;2008, Vol. 3, p1 

    Our aim was to develop a diagnostic algorithm for milk intolerance. We distinguish adverse reaction to milk assumption in lactose intolerance and in cow milk protein intolerance. Anamnesis, clinical examination, laboratory investigations and double blind challenge procedures are discussed and...

  • Beating the mid-season slump. O'Dwyer, Tom // Irish Farmers Monthly;Jun2008, p25 

    The article discusses the decline in milk protein content within the period of June to August 2008 in Ireland. It cites several factors contributing to the decrease including the mid-season grass quality, the calving pattern and the generic potential of the herd for the production of milk...

  • Componentes de (co)varianza de los días abiertos en bovinos Santa Gertrudis. Guerra-Iglesias, Danilo; Espinoza-Villavicencio, José Luis; Palacios-Espinosa, Alejandro; González-Peña, Dianelys; Rodríguez-Almeida, Felipe; Guillén-Trujillo, Ariel // Técnica Pecuaria en México;abr-jun2009, Vol. 47 Issue 2, p145 

    In order to estimate the genetic parameters of open days (OD), data from Santa Gertrudis cattle in the Turiguanó Island, Cuba, were analyzed. The first eight calvings of cows in 15 herds were considered. The sample included 16,209 calvings of 3,065 cows' daughters of 85 sires and 2,610 dams....

  • Genome-Wide Association Study Identifies Two Major Loci Affecting Calving Ease and Growth-Related Traits in Cattle. Pausch, Hubert; Flisikowski, Krzysztof; Jung, Simone; Emmerling, Reiner; Edel, Christian; Götz, Kay-Uwe; Fries, Ruedi // Genetics;Jan2011, Vol. 187 Issue 1, p289 

    Identifying quantitative trait loci (QTL) underlying complex, low-heritability traits is notoriously difficult. Prototypical for such traits, calving ease is an important breeding objective of cattle (Bos taurus)-improving programs. To identify QTL underlying calving ease, we performed a...

  • Interação genótipo-ambiente em rebanhos nelore da Amazônia Legal. de Sousa MATOS, Amanda; do Socorro da Silva SENA, Josynélia; Righetti MARCONDES, Cintia; Framartino BEZERRA, Luiz Antonio; Barbosa LÔBO, Raysildo; Nogara RORATO, Paulo Roberto; de Córdova CUCCO, Diego; Olegário de ARAÚJO, Ronyere // Revista Brasileira de Saúde e Produção Animal (RBSPA);abr-jun2013, Vol. 14 Issue 2, p599 

    Genotype-environment interaction was studied by two different procedures in productive and reproductive traits of Nellore cattle. Data from adjusted weights at 120 (P120), 210 (P210), 450 (P450) days of age, scrotal circumference at 450 days of age (PE450) and age at first calving (IPP) for...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics