Results 21 to 30 of about 336,156 (254)
Levels of Supplementation for Grazing Beef Heifers [PDF]
Asian-Australasian Journal of Animal Sciences, 2014 The objective of this experiment was to evaluate the effect of providing different levels of a supplement on the nutritional characteristics and productive performance of heifers on pasture during the rainy-dry transition and dry season in Brazil or tropical area.
Carla Heloisa Avelino Cabral +7 more
openaire +3 more sources
Animals, 2021 In beef herds, increasing animal welfare, improving reproductive performance and easing animal management are key goals in farm economics. We explored whether delaying the removal of the intravaginal progesterone device by 24 h in heifers synchronized ...
Aitor Fernandez-Novo +6 more
doaj +1 more source
Probability of pregnancy in beef heifers [PDF]
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2014 This study aimed to evaluate the influence of initial weight, initial age, average daily gain in initial weight, average daily gain in total weight and genetic group on the probability of pregnancy in primiparous females of the Nellore, 1/2 Simmental + 1/2 Nellore, and 3/4 Nellore + 1/4 Simmental genetic groups.
Faria, D.P. +6 more
openaire +4 more sources
Journal of Animal Science, 2020 This 2-yr study evaluated the growth and puberty attainment of Bos indicus-influenced beef heifers offered two different post-weaning concentrate supplementation amounts and delivery frequencies.
P. Moriel +8 more
semanticscholar +1 more source
OESTRUS, LH, OVULATION AND FERTILITY IN BEEF HEIFERS [PDF]
Reproduction, 1975 University of Nebraska, and U.S. Department of Agriculture, Clay Center, Nebraska 68933, U.S.A. (Received 18th November 1974) The pregnancy rate resulting from matings at a single oestrus in beef cattle averages 70% for natural mating (Turman, Laster, Renbarger & Stephens, 1971) and 60% for artificial ...
Christenson, R. K. +2 more
openaire +2 more sources
The effect of gender status on the growth performance, carcass and meat quality traits of young crossbred Holstein-Friesian×Limousin cattle [PDF]
Animal Bioscience, 2021 Objective The objective of this study was to compare growth performance, carcass traits and meat quality in young bulls, steers and heifers produced by crossing Limousin bulls with Holstein-Friesian cows, fattened semi-intensively and slaughtered at 18 ...
Paulina Pogorzelska-Przybyłek +3 more
doaj +1 more source
The vaginal and fecal microbiomes are related to pregnancy status in beef heifers
Journal of Animal Science and Biotechnology, 2019 The greatest impact on profitability of a commercial beef operation is reproduction. However, in beef heifers, little is known about the vaginal and fecal microbiota with respect to their relationship with fertility.
Fei-Long Deng +7 more
semanticscholar +1 more source
Theriogenology, 2020 Induction protocols based on progesterone (P4) are used prior to a synchronization program for timed-AI (TAI) to increase number of pubertal heifers and pregnancy per AI (P/AI). Injectable, long-lasting P4 (iP4) is a novel, practical method to supplement
R. S. de Lima +4 more
semanticscholar +1 more source
Acta Scientiarum: Animal Sciences, 2014 The experiment aimed at evaluating leaf biomass flow, intensity and frequency of defoliation of Alexandergrass (Urochloa plantaginea (Link) Hitch) by beef heifers exclusively on pasture or that grazed and received protein salt.
Lidiane Raquel Eloy +5 more
doaj +1 more source
Data in Brief, 2018 The reproductive performance of heifers within their first breeding season influences the success of beef cattle operations. Therefore, a means to identify infertile and late breeding heifers before the start of the breeding season holds great promise ...
Sarah E. Dickinson, Fernando H. Biase
doaj +1 more source