Results 131 to 140 of about 11,907 (273)

STUDY ON THE AGE AT FIRST CALVING AND THE LONGEVITY OF BEEF COWS

Journal of Central European Agriculture, 2006
The age at fi rst calving, the life span and the longevity of cows have great importance in cattle husbandry, especially in beef cow husbandry, because the cost of raising weaned calves depends largely on how early cows calve and how long they remain in production. If cows are productive extendedly and raise more progeny, specifi c costs of raising per
Ildikó DÁKAY, Dávid MÁRTON, Krisztián KELLER, Attila FÖRDÖS, Márton TÖRÖK, Ferenc SZABÓ   +5 more
openaire   +3 more sources

Effect of age at first calving and heat stress at parturition on reproductive efficiency and postpartum disorders in Holstein heifers

, 2019
The objective of this study was to evaluate the impact of age at first calving (AFC) and climatic conditions at calving on peripartum disorders and reproductive performance in Holstein heifers in a hot environment.
García, José E., José E. García, Mellado Bosque, Miguel, Vanessa Alba, Gaytán, Leticia, Jesús Mellado, Alba, Vanessa, Leticia Gaytán, Mellado, Jesus, Miguel Mellado, Mellado, Miguel   +10 more
core   +1 more source

Two approaches to account for genotype-by-environment interactions for production traits and age at first calving in South African Holstein cattle. [PDF]

Genet Sel Evol, 2022
Ducrocq V, Cadet A, Patry C, van der Westhuizen L, van Wyk JB, Neser FWC.   +5 more
europepmc   +1 more source

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro, Gabriel Gubiani, Letícia Pereira, Amanda Santos Gubiani, Angélica Simone Cravo Pereira, Roberto Sainz, Cláudio Ulhôa Magnabosco, Fernando Baldi   +7 more
wiley   +1 more source

The variability of giraffe skull morphology

Journal of Anatomy, EarlyView.
What does giraffe skull shape tell us about their development and evolution? Abstract Giraffe (Giraffa spp.) are among the most unique and charismatic extant animals, largely due to their distinct morphology. The evolutionary and developmental origin of ossicones is a key factor in giraffid biology, yet other features building their characteristic head
Nikolaos Kargopoulos, Jesús Marugán‐Lobón, Anusuya Chinsamy‐Turan, Bernard R. Agwanda, Michael Butler Brown, Stephanie Fennessy, Sara Ferguson, Rigardt Hoffman, Fredrick Lala, Arthur Muneza, Ogeto Mwebi, Moses Otiende, Alice Petzold, Sven Winter, Abdoul Razack Moussa Zabeirou, Julian Fennessy   +15 more
wiley   +1 more source

Longevity of dairy cows depending on the age of first calving

Tehnologìâ virobnictva ì pererobki produktìv tvarinnictva
Research to study the traits of duration of use and cows productive longevity of Ukrainian Black-andWhite dairy (UBWD) and Holstein breeds, depending on the age of frst calving, was carried out in the herd of PE "Burynske" Pidlisniv branch of Sumy district.
openaire   +1 more source

Antimicrobial prescribing guidelines for feedlot cattle

Australian Veterinary Journal, EarlyView.
P Cusack, T Batterham, SW Page, GF Browning, JM Norris   +4 more
wiley   +1 more source

Effects of Prepartum Supplementation and Yeast Fermentation Products on the Progesterone‐Modulated Transfer of Passive Immunity in Bos indicus Cows

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Inadequate colostrum intake increases risks of calf morbidity and mortality. This study investigated the effects of prepartum and early postpartum supplementation and yeast fermentation products on late‐pregnant Bos indicus cows, and the role of progesterone in mediating passive immunity transfer.
Latino G. S. Coimbra, Fran C. Cowley, Geoffry Fordyce, Luis F. P. Silva   +3 more
wiley   +1 more source

RELATIONSHIPS BETWEEN BODY MEASUREMENT OF DAIRY CALVES AT SIX MONTH OF AGES AND AGE AT FIRST CALVING AND MILK PRODUCTION

Journal of Central European Agriculture, 2005
In this research, the relationships of between body measurements such as heart girth, body length, height at withers and chest depth at six month of ages of calves and their age at fi rst calving and the fi rst lactation 305- day milk yield were investigated.
openaire   +4 more sources

Effect of age at first Calving and Parity Order on Lactation Length, Lactation Yield and Calving Interval in the Belgravia Dairy Farm

, 2010
The obejctive of this study was to investigate the effect of age at first calving and parity order on some production and reproduction traits (lactation length, lactation yield and calving interval) in Belgravia dairy farm, which belong to the ...
Anthony Achor Micheal, Julia
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