Results 251 to 260 of about 11,907 (273)
The Effect of Calving Season and Age at First Calving on Milk Production in Czech Fleckvieh Cattle
In the high demand for milk in dietary provision for the nutritional well-being of humans, scrutinizing the effects of Age at First Calving and Calving Seasons on milk production, quality and yield is very important to consider. Therefore this thesis investigated the complex interplay between independent variables 1) Age at First Calving and 2) Calving
Aikins, Doris
openaire +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Calving day and age at first calving in Angus heifers.
Journal of animal science, 2010Because of difficulties in data collection and analysis, in most breeds there have been limited ways to evaluate fertility in females on a between-herd basis. The objective of this study was to determine the heritabilities (direct and maternal) for CD (calving day) and AFC (age at first calving) in American Angus heifers and to evaluate the potential ...
J, Minick Bormann, D E, Wilson
openaire +1 more source
Factors Affecting Age at First Calving in Gir Cattle
International Journal of Livestock Research, 2014The production records on 228 Gir cows with 680 lactations sired by 52 bulls, maintained at Cattle Breeding Farm, Junagadh Agricultural University, Junagadh, for 24 years (1987 – 2010) were studied. The data were analyzed to study the effect of period of calving and season of calving as fixed effect on the reproduction trait viz., age at first calving.
Nikhil Dangar, Pravin Vataliya
openaire +1 more source
Variability of age at first calving and service period of first calving Simmental cows
2018Oblast reprodukcije goveda je najznačajnija faza proizvodnje jer se u toj fazi obezbeđuju grla za remont stada, proizvodnju mleka i tov, odnosno proizvodnju mesa. Ovim istraživanjem je ispitana varijabilnost uzrasta pri telenju i trajanja servis perioda prema godini i sezoni telenja kod 3.461 kontrolisane prvotelke simentalske rase na imanjima ...
Pantelić, Vlada +5 more
openaire +1 more source
Influence of the first calving age on the cow productivity indicators
2022Age at first calving is considered an important predictor of subsequent milk yield and is an extremely important economic trait determining the profit of cow milk production [1, 2]. Cow longevity and lifetime performance traits are good indicators of breeding effectiveness and animal welfare. They are also interrelated with the economics of dairy herd [
Mišeikienė, Ramutė +3 more
openaire +1 more source
An analysis of age and body weight at first calving for Holsteins in the United States
Preventive Veterinary Medicine, 1997In a national survey of US dairy producers, only 2.7 +/- 0.5% of Holstein dairy operations reported achieving recommended target ranges of age < or = 24 months and body weight (BW) > or = 550 kg at first calving. Allowing for wider target ranges, still only 14.6 +/- 1.3% of Holstein dairy operations reported achieving age < or = 25 months and BW > or =
W C, Losinger, A J, Heinrichs
openaire +2 more sources
Calving day and age at first calving in Angus heifers1
Journal of Animal Science, 2010J. Minick Bormann, D. E. Wilson
openaire +1 more source
Factors Affecting Age at First Conception and Calving in Buffaloes
International Journal of Livestock Research, 2021Soniya Bashyal +2 more
openaire +1 more source
What is the best first-calving age of cows in robotic milking farms?
Italian Journal of Animal Science, 2022Gurkan Ilhan +2 more
exaly