Beef cows
Insulin‑like growth factor and growth hormone receptor in postpartum lactating beef cows
... The growth hormone receptor (GHR), which modulates insulin-like growth factor I (IGF-I) synthesis under GH control (Jones & Clemmons, 1995), is detected in higher abundance in the liver (Bornfeldt et al., 1989). The ...
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Effects of the weaning age of calves on somatic development and on reproductive performance of beef cows
... of beef cows whose calves were submitted to early weaning (76 days of age), or conventional weaning (148 days of ...Braford cows that calved in 2004, 2005, and 2006 to evaluate weight at calving at ...
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Serum progesterone concentration and conception rate of beef cows supplemented with ground corn after a fixed-time artificial insemination protocol
... grazing beef cows after fixed-time AI (TAI) on serum progesterone (P4) concentrations on day 7 and conception rates on day 28 after TAI were ...Brangus cows had follicular and luteal activity ...
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Body condition score to predict the postpartum fertility of crossbred beef cows
... in beef cows suckling calves under extensive conditions were ...investigated. Cows were subjected to four BCS evaluations over the postpartum period, starting around one month after ...evaluation ...
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Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures
... for beef cows in the last third of gestation, two experiments were ...Nellore cows were assigned to a completely randomized design with four treatments: control, which received no supplement; ...
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Age and calving time affects production efficiency of beef cows and their calves
... of beef cows and their ...age. Cows and calves had their development examined based on their weight and body condition score at calving, at weaning, and at 210 ...Adult cows were heavier than ...
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Effect of parity and suture type on the reproductive performance of beef cows submitted to caesarean section
... in beef cattle take into account various ...in beef cattle production systems, as this parameter factor about 80% of variable ...of beef cattle production is usually directed to the reduction of feed ...
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Metabolic, productive and reproductive responses to postpartum short-term supplementation in primiparous beef cows
... in beef cows are scarce in the ...multiparous beef cows during postpartum (Cooke et ...primiparous cows supplemented for 23 days with improved pastures during the early postpartum ...
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Characterization of biological types of cattle: indicator traits offertility in beef cows
... Approximately 70% of the world’s rural poor depend upon livestock as a component of their livelihoods (Pattison et al., 2007), and genetic diversity allows farmers to select stock or develop new breed characteristics in ...
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ARTIGO_Achieving body weight adjustments for feeding status and pregnant or nonpregnant condition in beef cows
... same cows used in this study [ 2 ], the inclusion of feeding level in the model is impractical because the feeding level is a variable ...Zebu beef cows are still ...
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DISSERTAÇÃO_Effect of lactation stage on quantitative aspects of digestion and physiology of beef cows
... lactating beef cows experience reduced intake and typically mobilize body reserves to compensate for the negative balance between nutrient demand and consumption (Mulliniks et ...lactating beef ...
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Relationship between clinical and postmortem evaluation in repeat breeder beef cows
... breeder cows is justifiable than ...crossbred cows and heifers that have failed to conceive after three or more services were identified, submitted to a clinical examination and blood collection for ...
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Evaluation of grazing beef cows receiving supplements with different protein contents
... of beef cows during post-calving in the tropics found improved weight in supplemented animals (RUAS et ...the cows was lower than the minimum BCS at parturition ...
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The Effects of Intramuscular or Intravenous Injections of Gonadotropin Releasing Hormone at Fixed-Time Artificial Insemination on Pregnancy Rates of Bos Indicus Beef Cows
... The Co-synch protocol has earned better acceptance among the users when an intravaginal progesterone device was added, making it a good alternative for the synchronization of estrus in beef cows (Lamb et ...
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Supplementation of grazing beef cows during gestation as a strategy to improve skeletal muscle development of the offspring
... grazing beef cows during gestation did not influence the progeny birth weight, weaning weight and the ...from cows that were supplemented at both mid and late gestation compared with those born from ...
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Supplementation with a mixture of whole rice bran and crude glycerin on metabolic responses and performance of primiparous beef cows
... suckling beef cows (Grimard et ...SUP cows had a better energy balance than CON ...dairy cows as a consequence of an increase in energy intake (Cavestany et ...SUP cows (Bossis et ...
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ARTIGO_Effects of energy-protein supplementation frequency on performance of primiparous grazing beef cows during pre and postpartum
... lactating beef cows ...ed cows and between cows supplemented daily and cows supplemented every three ...supplemented cows and between cows subjected to different ...
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Levels of supplementation for grazing pregnant beef cows during the dry season
... pregnant cows grazing on Brachiaria decumbens ...pregnant cows with predominance of Zebu breed at body weight of 446±12 kg were utilized in a completely randomized experimental ...grazing cows during ...
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Association between molecular markers linked to the Leptin gene and weight gain in postpartum beef cows
... This paper was aimed at analyzing the effect of six polymorphisms, BMS1074, BM1500 and IDVGA- 51 STRs (short tandem repeats) and LEPSau3AI (A/ B), LEPSau3AI (+/-), and LEPKpn2I SNPs (single nucleotide polymorphisms) ...
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Management and nutrition strategies to reduce the breeding season in beef cows
... Significant differences were detected between Groups A, B, C and D for the percentage of cows cycling by 30, 60 and 90 days in the breeding season and between groups that received mineral mixture containing 8.8% ...
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