Beef Heifers
Performance of Growing Beef Heifers Grazing Stockpiled Tall Fescue and being Fed Differing Amounts of Corn Gluten Feed and Soyhulls.
... of heifers grazing stockpiled fescue ...of beef heifers grazing SF, either unsupplemented (US) or supplemented (SUP) with differing amounts and variations of CGF and SH, and to determine how ...
152
Progesterone inserts may help to improve breeding readiness in beef heifers
... yearling beef heifers, possibly combined with the use of exogenous progesterone, allows females to produce the maximum number of calves over their ...of heifers with progesterone-containing vaginal ...
6
Comparison of two CIDR based Estrous Synchronization Programs in Beef Heifers.
... in beef cattle has progressed, several estrous synchronization programs have been developed for use in beef heifers and ...of beef heifers described in terms of reproductive tract ...
47
Evaluation of age, weaning weight, body condition score, and reproductive tract score in pre-selected beef heifers relative to reproductive potential
... in beef cat- tle production ...In beef heifers, pregnancy rates range from 53% to 95% under natural service [2– 10] and are reduced to 48% to 69% when artificial insem- ination (AI) is the only ...
7
The Effect of Dietary Manganese on Growth, Reproductive Performance, and Manganese Status of Beef Heifers
... of beef heifers. In experiment 1, Angus and Simmental heifers were individually fed a control diet containing ...of heifers, but tended to increase the number of heifers cycling at 12 ...
98
Sward Structural Characteristics and Performance of Beef Heifers Reared under Rotational Grazing Management on Campos Grassland
... Britannic beef heifers reach the sexual maturity with 60% of their adult weight [29], with occurs around 270 kg LW in animals evaluated in the present ...the heifers reach 237 kg LW (mean), ...
10
Associations of blood analysis with feed efficiency and developmental stage in grass-fed beef heifers
... efficient heifers may be related to the presence of more readily available oxygen because of decreased energy ...feed-efficient heifers with lower oxygen demands may have more oxygen available for oxidative ...
20
Performance of Beef Heifers Grazing Stockpiled Endophyte-infected, Endophyte-free or Non-toxic Endophyte-infected Tall Fescue
... began, heifers were given a strip of fresh forage ...the heifers within the designated ...to heifers in the first half of the ...the heifers was monitored closely in an effort to avoid ...
122
The vaginal and fecal microbiomes are related to pregnancy status in beef heifers
... For all analyses, significance was determined as P < 0.05. Shannon Diversity index [35], and richness (number of observed OTUs) were calculated using QIIME2 to evalu- ate alpha diversity. The Kruskal-Wallis test was ...
13
Forage and breed effects on behavior and temperament of pregnant beef heifers
... [5,7]. Heifers grazing E+ had reduced PRL concentrations as compared to heifers grazing NT pas- tures in the present study, and PRL concentrations of heifers on E+ were not influenced by breed ...BR ...
5
Stress and immunological response of heifers divergently ranked for residual feed intake following an adrenocorticotropic hormone challenge
... Susceptibility to stress and biological differences in an animal’s stress response is proposed [6, 7] as probable drivers of variation in feed efficiency that warrant further investigation. Indeed, an association between ...
8
TRIAL AND BUDGET ANALYSIS OF TWO SYNCHRONIZED ARTIFICIAL INSEMINATION BREEDING PROGRAMS FOR BEEF FIRST CALF HEIFERS
... However, many producers tend to grow their own cows from heifer calves produced. This is an excellent way to keep good genetics within the herd and helps to build a rancher’s herd without having to buy more cows. The ...
18
Nitrogen isotopic fractionation and nitrogen use efficiency in beef and dairy cattle
... The research chapters in this thesis make a significant contribution to the field of study in improving the NUE of livestock and reducing environmental emissions by highlighting the use of N isotope fractionation as a ...
237
The performance of heifers reared in a suckling system
... of heifers reared in a suckling system compared to those reared in a bucket system, was resulting in a higher milk production during first ...of heifers reared in a suckling system was probably caused by ...
65
Failure to Use Cubicles and Concentrate Dispenser by Heifers after Transfer from Rearing Accommodation to Milking Herd
... by heifers after transfer from rearing accommodation to milking ...on heifers’ use of cubicles and concentrate dispenser just after being transferred from rearing accommodation to the milking ...of ...
10
Assistance at parturition of primiparous, two year old, Angus heifers and the effect of liveweight gain of heifers in early pregnancy on birth weight of the calf : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Animal Science at Massey University, Palmerston North, New Zealand
... Assistance at parturition of primiparous, two-year-old, Angus heifers and the effect of liveweight gain of heifers in early pregnancy on birth weight of the calf.. PhD thesis, Massey Uni[r] ...
243
Use of serology and real time PCR to control an outbreak of bovine brucellosis at a dairy cattle farm in the Nile Delta region, Egypt
... Background: Bovine brucellosis remains one of the most prevalent zoonotic infections affecting dairy cattle in developing countries where the applied control programs often fail. We analyzed the epidemiologic pattern of ...
7
Methane emissions from dairy heifers as affected by residual feed intake and breed : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Animal Science at Massey University, Manawatū, New Zealand
... dairy heifers representing two breeds (Holstein-Friesian and Jersey) and two previously determined RFI categories (High: ...DM). Heifers were 20-22 mo old; BW = 480 and 408 for HF and Jer, respectively, and ...
139
Insulin Sensitivity of Heifers on Different Diets
... The insulin mediated glucose disposal (M) in- dicates the whole body glucose disposal. The main target tissues for glucose uptake is con- sidered to be skeletal muscle and adipose tis- sue. The mean M-values and ...
8
Argentine government policies: impacts on the beef sector
... Monthly beef production showed similar average monthly values in both periods and per-capita monthly beef consumption just a few differences between both periods ...average beef exports and retail ...
14