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Sixteen Murrah buffalo's dams and their calves were evaluated at Livestock Farm, Adhartal, Department of Livestock Production and Management, College of Veterinary Science & A.H., N.D.V.S.U., Jabalpur Madhya Pradesh, India during 12 months period (from 1st June, 2020 to 30th May, 2021). The objective was to study the production performance in weaning and suckling system of management and randomly assigned into two different groups as suckling (control) and weaning (experimental) based on their lactation yield and parities. The average daily milk let down time was significantly (p<0.05) lower in suckling group of buffaloes than weaning group of buffaloes (1.62±0.04 vs. 3.08±0.09 min). The mean value of daily colostrum yield for 5 days after calving was 3.95±0.23 and 4.7±0.15 kg for weaning and suckling buffalo groups respectively. Daily colostrum yield for suckling group of buffaloes was significantly (p<0.05) higher than weaning group of buffaloes. The average daily milk yield was higher in suckling group than the weaning group and its mean value was 4.83±0.23 kg for weaning and 6.14±0.21 kg for suckling group respectively. The average milking time and total milking time was significantly (p<0.05) lower in suckling group than weaning group of buffaloes (4.38±0.09 vs. 5.39±0.11 min and 6.01±0.11 vs. 8.42±0.12 min respectively). The average daily milk flow rate was significantly (p<0.05) higher in suckling group (0.84±0.01 kg min-1) than the weaning group (0.59±0.01 kg min-1). It is concluded that suckling have positive effect on production performance of Murrah buffalo. [ABSTRACT FROM AUTHOR]

With the intensification of animal husbandry, the importance of the animals' ability to adapt to changing environmental conditions and thus the properties with regard to conformation and constitution increases. Conformation and performance are closely related and reflect the metabolism of each individual. The aim of the research is to investigate the dynamics of age-related changes in conformation characteristics, the degree of mutual influence on milk yield and constitutional type of cows in the Holsteinized Holstein population of the Udmurt Republic (Russian Federation). In the examined population the animals have a strong, noticeably long and deep trunk, good parameters for the development of shoulder height, correctly positioned fore and hind limbs. The 305-day milk production of the animals examined was an average of 6085.12 kg in the first lactation and an average of 7047.56 kg of milk with a fat and protein content of 4.08% each in the second to fourth lactation; 3.86% (first lactation, group 1) and 3.02; 3.03% (second to fourth lactation, group 2). The production index is 6765.17 kg and 7628.52 kg. The conformation characteristics of straight trunk length, size of the femoral head, cannon bone circumference and sacrum length have a significant influence on the 305-day milk line in the first lactation. Criteria such as the depth of the chest, the size of the femoral head, the cannon bone circumference, the depth of the trunk, the width of the pelvis, the length of the sacrum and the length of the hip area have a certain influence on the fat and protein content and on the production index in general. The monofactorial dispersion analysis showed that the respective "measure for the conformation trait" influenced the examined performance traits to different degrees and varied between 0.3% and 12.2%. The analysis of the performance characteristics of cows with different body types showed that the influence of the factor "body type index" is only small and varies within 0.3 to 2.9%. The "index of the hip area" fluctuated between 0.2 and 7.7%. The greatest influence of the two index values "body type index" and "index of the hip area" was with regard to the milk quality characteristics fat content (2.9% and 7.7%) and ice white content (1.4% and 2.9%). [ABSTRACT FROM AUTHOR]

In article the dependence of milk yield on indicators, such as is considered: service period, number of a lactation and age of an animal. The correlation of milk yield in 150 days about service period was 0,48; with number of a lactation - 0,63; on age - 0,66. Correlation between number of a lactation and age - 0,96. On a complex of researches for 2015-2017 and receiving technological indicators the index of the forecast of milk yield has been offered. Considering that number of a lactation and age have close connection, for forecasting of the index of milk yield used one indicator - it is age of a mare. Thus, on the offered formula it is possible to predict efficiency of milkyield mares of a koumiss farm of Dibrovsky horse-breeding center on significance value р < 0,001 at an error of a formula of 331,47 l. [ABSTRACT FROM AUTHOR]