Download or read book The Influence of Postpartum Nutrition on Cow Weight and Condition Change Estrus Conception Rate and Calf Performance of Fall calving Beef Cows written by James Allen Cantrell and published by . This book was released on 1982 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Postpartum Nutrition and Weaning Age of Calves on Cow Body Condition Estrus Conception Rate and Calf Performance of Fall calving Beef Cows written by J.L. Cantrell and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Postpartum Plane of Nutrition and Weaning Age of the Calves on Cow Body Weight Cow Body Condition Estrus Conception Rate and Performance of the Calves in Fall calving Beef Cows written by Kirk Lane Hancock and published by . This book was released on 1984 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Total Feed and Protein Intake on Reproductive Performance in the Beef Female Through Second Calving written by J. N. Wiltbank and published by . This book was released on 1965 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Postpartum Weight and Body Condition Loss on the Performance of Fall Calving Beef Cows written by Johnny Rakestraw and published by . This book was released on 1984 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Postpartum Nutrition and Suckling Management on Reproductive Function and Preweaning Calf Performance in Fall calving Brahman B o s I n d i c u s Females written by Richard Browning (Jr.) and published by . This book was released on 1992 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bovine Reproduction written by Richard M. Hopper and published by John Wiley & Sons. This book was released on 2021-07-21 with total page 1236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bovine Reproduction A complete resource for practical, authoritative information on all aspects of bovine theriogenology The newly revised Second Edition of Bovine Reproduction delivers a comprehensive overview of all major issues in bovine reproduction. Written by leading experts in the subject, the book is an indispensable reference for any veterinarian dealing with bovine fertility. Bovine Reproduction is divided into sections on the bull, the cow, the neonate, and assisted reproduction techniques. New chapters cover new gene manipulation technologies, managing problem donors, lameness, and more. Outdated and redundant information from the First Edition has been removed and replaced by coverage of new diseases, technologies, procedures, techniques, and approaches to fertility problems. A new companion website provides images and tables from the book in PowerPoint format. In addition to more than 675 full-color images, readers will also benefit from: A thorough discussion of the anatomy and physiology of the bull, including the endocrine and exocrine function of bovine testes and the thermoregulation of the testes An exploration of breeding and health management of bulls, including the evaluation of breeding soundness and ultrasound examination of the reproductive tract An examination of the anatomy, physiology, and the breeding and health management of cows, including fetal programming, the reproductive tract microbiome, and a section on obstetrics and reproductive surgery A review of the management of both critical care of the neonate and effective colostrum assessment and provision An introduction to assisted and advanced reproductive technologies A practical and comprehensive reference, Bovine Reproduction is a must-have purchase for bovine practitioners, theriogenologists, animal scientists, veterinary students, and residents with an interest in cattle.
Download or read book Influence of Early Lactation Energy Balance on Postpartum Interval Milk Production and Metabolic Hormone Concentration in Thin Primiparous Beef Heifers written by David Leon Lalman and published by . This book was released on 1996 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research has firmly documented that body condition at calving has a major influence on reproductive success of beef cattle. One major contributing factor to reduced reproductive efficiency is extended postpartum interval to first estrus or luteal activity (PPI). Unfortunately, due to circumstances that may be beyond the control of the producer, cows and heifers often calve in thin body condition. Other research has led to the recommendation that thin cows be managed to gain body condition during early lactation. However, increasing nutrient intake also increases milk production as well as input costs. Two consecutive experiments were conducted to determine the relationship of rate of body condition change to PPI in first calf heifers that received low nutrient intake during late gestation. Although heifers were treated the same during late gestation, body condition score at calving (CCS) continued to have a greater influence on PPI than did condition score change after calving (CSCH). Increasing body condition during early lactation resulted in reduced PPI, however, few heifers returned to cyclic activity before 90 d postpartum. Maximum reduction in PPI occurred with 1.5 units increase in body condition score (BCS) in 90 d. No additional benefit was gained by increasing more than 1.5 units BCS. In the second trial, the relationships of energy intake and energy balance to milk yield, milk composition and metabolic hormone concentration were investigated. Higher milk production at d 30 postpartum was associated with extended PPI and higher CCS was associated with lower milk production. Low energy intake and (or) body condition loss was associated with a rapid decline in milk production. Greater energy intake delayed peak milk production and resulted in an increase in energy required for milk production as well as an increase in milk protein composition. Greater gains in body condition score were associated with shorter PPI, greater serum concentration of insulin, insulin-like growth factor I and lower serum concentration of growth hormone. Increasing body condition score during early lactation can reduce PPI, but evidence supports that inherent metabolic efficiency is more important in determining PPI.
Download or read book Effects of Pre partum and Post partum Bolus Injections of Trace Minerals on Performance of Beef Cows and Calves Grazing Native Range written by Lauren Rae Mundell and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Our objective was to evaluate the effects of pre- and post-partum bolus injections of a trace mineral solution on beef cow reproductive performance, body weight (BW) change, and body condition score (BCS) change and on performance of suckling calves. Mature beef cows (n = 460; initial BW = 497± 89 kg, initial BCS = 5.4± 0.74) were stratified by BCS, parity, and predicted calving date and assigned randomly to 1 of 2 treatments: 1) subcutaneous trace mineral (TM) injection containing 15 mg/mL Cu, 5 mg/mL Se, 10 mg/mL Mn, and 60 mg/mL Zn or 2) subcutaneous injection of physiological saline (SA). Injections were administered to cows (1 mL / 90 kg BW) 105 days before the first projected calving date and again 30 days before fixed-time AI. Calves received the same treatment as their dams and were injected (1 mL / 45 kg BW) at birth and again at 71± 21 days of age. Cows grazed native pastures for the duration of the study; trace mineral supplements and white salt were available to all cattle ad libitum before and during the study. Ovulation was synchronized using a 5-d CO-Synch + CIDR protocol and cows were inseminated 60 to 64 hours after CIDR removal. Cows were exposed to fertile bulls for natural-service breeding 10 days after AI for 35 to 50 days. Conception to AI and final pregnancy rate were assessed 36 days after AI with ultrasound and 120 days after AI via rectal palpation. Change in BW and BCS from initiation of the study to calving and from AI to weaning did not differ (P [equal to or greater than] 0.15) between TM and SA cows. Conversely, TM cows had greater (P = 0.04) BCS increase than SA cows between calving and AI. Calf BW at birth, ADG, and age-adjusted weaning BW did not differ (P [equal to or greater than] 0.36) between treatments. Proportion of cows with estrus cycles 17 and 8 days before ovulation synchronization was similar (P [equal to or greater than] 0.51) between treatments. Conception to AI was greater (P = 0.05) for cows receiving TM (60.2%) than for cows receiving SA (51.2%); however, overall pregnancy did not differ (P = 0.24) between treatments and averaged 92%. Under the conditions of our study, pre- and post-partum TM injections improved conception to fixed-time AI by beef cows.
Download or read book Winter Nutrition of Fall calving Cows and Calves written by Henry Ashby Turner and published by . This book was released on 1985 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Requirements of Beef Cattle written by Subcommittee on Beef Cattle Nutrition and published by National Academies Press. This book was released on 2000-05-16 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: As members of the public becomes more concious of the food they consume and its content, higher standards are expected in the preparation of such food. The updated seventh edition of Nutrient Requirements of Beef Cattle explores the impact of cattle's biological, production, and environmental diversities, as well as variations on nutrient utilization and requirements. More enhanced than previous editions, this edition expands on the descriptions of cattle and their nutritional requirements taking management and environmental conditions into consideration. The book clearly communicates the current state of beef cattle nutrient requirements and animal variation by visually presenting related data via computer-generated models. Nutrient Requirements of Beef Cattle expounds on the effects of beef cattle body condition on the state of compensatory growth, takes an in-depth look at the variations in cattle type, and documents the important effects of the environment and stress on food intake. This volume also uses new data on the development of a fetus during pregnancy to prescribe nutrient requirements of gestating cattle more precisely. By focusing on factors such as product quality and environmental awareness, Nutrient Requirements of Beef Cattle presents standards and advisements for acceptable nutrients in a complete and conventional manner that promotes a more practical understanding and application.
Download or read book Evaluating the Effects of Pre and Post AI Nutrition on Embryo Quality and Reproductive Efficiency of Beef Cattle written by Ricardo P. Arias and published by . This book was released on 2017 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of nutrition during late gestation and after insemination, as well as the effects of energy reserves on reproductive function of the beef female and subsequent growth and reproductive function of their offspring were investigated. The aims of this research were: 1) to evaluate how a change in nutritional intake immediately after insemination would affect pregnancy success and concentrations of hormonal mediators, IGF-I and progesterone, 2) to determine the influence that postpartum energy reserves have on embryo viability, early embryonic development, and embryo quality, and 3) to evaluate the impact that maternal protein supplementation of irrigated meadow grass hay during the last trimester of gestation has on cow BW and BCS, calf birth and weaning BW, conception rates of heifer offspring, and feedlot performance of steer offspring. Findings from Chapter III show that suppression in nutritional plane of heifers during the 21-d following AI has a negative impact on heifer performance, circulating concentrations of IGF-I, and AI pregnancy rates. Thus, it is biologically beneficial to ensure that heifers maintain their pre-breeding plane of nutrition during the 21-d following AI. Chapter IV presents evidence that cows with BCS 5.4 tend to produce more total embryos after a superovulation program compared to cows BCS 4.3. Additionally, peripheral concentrations of IGF-I were greatest in cows with a BCS 5.4, which may be an indicator of a more suitable environment in the uterus for further development of an embryo. In Chapter V, cows supplemented with protein during the last trimester of gestation had a greater BW gain and BCS change by calving time. Weaning BW of calves born to protein supplemented dams was greater when compared to calves from non-supplemented cows. There was a trend for pregnancy rates of heifers born supplemented dams to be 16 percentage points greater (95% vs. 79%). And although dam supplementation did not seem to affect intakes, gains, feed efficiency or carcass characteristics on the male progeny in this study, advantages have been observed other peer-reviewed research studies that support the concept that late gestation supplementation can have an impact subsequent progeny.
Download or read book Bovine Reproduction written by Richard M. Hopper and published by John Wiley & Sons. This book was released on 2014-08-18 with total page 2206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bovine Reproduction is a comprehensive, current reference providing information on all aspects of reproduction in the bull and cow. Offering fundamental knowledge on evaluating and restoring fertility in the bovine patient, the book also places information in the context of herd health where appropriate for a truly global view of bovine theriogenology. Printed in full color throughout, the book includes 83 chapters and more than 550 images, making it the most exhaustive reference available on this topic. Each section covers anatomy and physiology, breeding management, and reproductive surgery, as well as obstetrics and pregnancy wastage in the cow. Bovine Reproduction is a welcome resource for bovine practitioners, theriogenologists, and animal scientists, as well as veterinary students and residents with an interest in the cow.
Download or read book Factors Influencing Fertility in the Post Partum Cow written by H. Karg and published by Springer. This book was released on 1982-08-31 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Protein Supplementation on Reproductive Performance of Fall Calving Cows and Prenatal and Postnatal Growth and Carcass Characteristics of Calves written by Kyle James Mclean and published by . This book was released on 2013 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fall calving cows were used to determine the effects of protein supplementation on reproduction, and growth and carcass characteristics of calves. Cows were individually supplemented from mid-November to mid-March for four years with either a control diet (Con; 1.82 kg/d of 38 % CP) or low diet (L; 0.2 kg/d of 8% CP). During each year, cows were reassigned dietary treatments according to calving date and BCS, with half of Con and L cows remaining on the same diets as the previous year and the other half assigned to the other diet. Cows were exposed to bulls for 60 d beginning December 1. Statistical analyses were performed with a 2 x 2 factorial design with PROC GLM and PROC FREQ. Cows on Con diets lost less BW from November to January compared with L cows (-29.8 ± 2.8 and -49.7 ± 2.8 kg, P
Download or read book Abstracts American Society of Animal Science written by and published by . This book was released on 1990 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of abstracts of papers presented at the national and sectional meetings of the American Society of Animal Science.
Download or read book Journal of Animal Science written by and published by . This book was released on 1991 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
